References of "Article"
     in
Bookmark and Share    
Peer Reviewed
See detailComparison of rectal and infrared ear temperatures in older hospital inpatients.
Smitz, Simon ULg; Giagoultsis, T; Dewé, Walthère ULg et al

in Journal of the American Geriatrics Society (2000), 48(1), 63-6

OBJECTIVES: To assess the agreement between infrared emission detection (IRED) ear and rectal temperatures and to determine the validity of IRED ear thermometry in detecting rectal fever. DESIGN ... [more ▼]

OBJECTIVES: To assess the agreement between infrared emission detection (IRED) ear and rectal temperatures and to determine the validity of IRED ear thermometry in detecting rectal fever. DESIGN: Prospective, convenience sample, unblinded study. SETTING: An acute geriatric unit (teaching hospital) and a multidisciplinary intensive care unit. PARTICIPANTS: The study included 45 inpatients (26 women and 19 men), aged 78.3+/-6.9 years, admitted over a 4-month period. Twelve of the patients were definitely infected. MEASUREMENTS: Sequential rectal (RT) and ear temperature (ET) measurements were performed using mercury-in-glass and IRED ear thermometers, respectively. IRED ear temperatures were measured at both ears (unadjusted mode), with the highest of six ear temperatures considered the true value. RESULTS: Mean RT (37.39 degrees C +/- 0.52 degrees C) was significantly (P<.001) higher than mean ET (36.89 degrees C +/-0.59 degrees C). A highly significant positive correlation was found between RT and ET (slope = 0.69; 95% CI, 0.52-0.86; P<.001; r = 0.78). The mean bias (mean of the differences) between RT and ET was 0.50 degrees C +/-0.37 degrees C (95% CI, 0.41 degrees C-0.59 degrees C), and the 95% limits of agreement -0.22 degrees C and 1.23 degrees C (95% CI, -0.38 degrees C to 1.39 degrees C). According to the standard criterion (RT > or =37.6 degrees C), 14 patients were febrile. Using an optimum IRED ear fever threshold (37.2 degrees C), the sensitivity and specificity of IRED ear thermometry for predicting rectal fever were 86% and 89%, respectively (positive predictive value, 80%; negative predictive value, 93%). CONCLUSIONS: The degree of agreement between rectal temperature and the highest of six IRED ear temperatures was acceptable. Using an optimal IRED ear fever threshold of 37.2 degrees C (99 degrees F), IRED ear thermometry had acceptable sensitivity and specificity for predicting rectal fever. [less ▲]

Detailed reference viewed: 14 (0 ULg)
Full Text
Peer Reviewed
See detailReactions involving inorganic compounds
Krief, A.; Delmotte, C.; Colaux, Catherine ULg

in Pure & Applied Chemistry (2000), 72(9), 1709-1713

Selenium chemistry became, over the last 30 years, particularly useful for synthetic organic chemistry [1]. Inorganic as well as organic selenium compounds allow transformation which otherwise cannot be ... [more ▼]

Selenium chemistry became, over the last 30 years, particularly useful for synthetic organic chemistry [1]. Inorganic as well as organic selenium compounds allow transformation which otherwise cannot be done or require much more drastic conditions to proceed. We have over the last 25 years explored the reactivity of elemental selenium as well as its inorganic and organic derivatives. We report here our recent finding concerning (i) organic diselenols and -diselenolates and (ii) the role of selenoxides in the enantioselective dihydroxylation of C,C double bonds using catalytic amounts of osmium tetroxide. [less ▲]

Detailed reference viewed: 16 (1 ULg)
Peer Reviewed
See detailInfluence of ventilatory pattern on respiratory impedance measured by impulse oscillometry in horses
Van Erck, Emmanuelle ULg; Kirschvink, Nathalie; Art, Tatiana ULg et al

in Pflügers Archiv : European Journal of Physiology (2000), 440(R219-R220),

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailThe effect of electron-phonon interaction in iron-doped III-V cubic semiconductors
Colignon, David ULg; Kartheuser, Eduard ULg; Villeret, Murielle

in Journal of Physics : Condensed Matter (2000), 12(12), 2691-2699

A theoretical study of optical absorption and emission measurements of Fe2+ as a substitutional impurity in InP and GaP is presented. A new interpretation of the low-temperature absorption spectrum is ... [more ▼]

A theoretical study of optical absorption and emission measurements of Fe2+ as a substitutional impurity in InP and GaP is presented. A new interpretation of the low-temperature absorption spectrum is proposed based on a weak Jahn-Teller interaction between the electronic excited states and a local gap mode of Gamma(5) symmetry. The model also includes the crystal potential, hybridization with the orbitals of the ligands of the host crystal, spin-orbit interaction and a weak dynamic Jahn-Teller coupling of the orbital ground state of Fe2+ with transverse acoustic phonons of Gamma(3) symmetry. The theoretical model describes with good accuracy the measured positions and relative intensities of the spectral lines. In addition, the mass dependence of the local gap mode of Gamma(5) symmetry reproduces the general features of the fine structures associated with the isotopic shifts of the zero-phonon line and the contribution to the isotopic shifts arising from the difference in zero-point energy between the initial and final states of the transition is evaluated. [less ▲]

Detailed reference viewed: 57 (8 ULg)
Full Text
Peer Reviewed
See detailLuxation traumatique du tendon du tibialis posterior.
Kakanou, A.; Liloku, R.; NCHIMI LONGANG, Alain ULg et al

in Acta Orthopaedica Belgica (2000), 66(5), 514-6

Anterior dislocation of the tibialis posterior tendon is a traumatic lesion, which is rarely suspected following ankle trauma. It seems to be promoted by hypoplasia of the retromalleolar sulcus. Surgical ... [more ▼]

Anterior dislocation of the tibialis posterior tendon is a traumatic lesion, which is rarely suspected following ankle trauma. It seems to be promoted by hypoplasia of the retromalleolar sulcus. Surgical treatment is easy and reportedly gives excellent results, but the diagnosis is difficult and absence of diagnosis may result in functional instability of the foot requiring more invasive surgical treatment. [less ▲]

Detailed reference viewed: 13 (2 ULg)
Peer Reviewed
See detailIpsilateral motor responses to focal transcranial magnetic stimulation in normal and stroke patients.
ALAGONA G.; DELVAUX, Valérie ULg; GERARD, Pascale ULg et al

in Journal of Neurology, Neurosurgery & Psychiatry (2000), Neurosurgery and Psychiatry

Detailed reference viewed: 31 (2 ULg)
Full Text
Peer Reviewed
See detailMethodological bias in home range and mobility estimates when locating radio-tagged trout, Salmo trutta, at different time intervals
Ovidio, Michaël ULg; Philippart, Jean-Claude ULg; Baras, Etienne

in Aquatic Living Resources (2000), 13(6), 449-454

Radio tracking has been extensively used to enhance our knowledge on the movement and home range of fish in general and salmonids in particular. However, the use of various temporal sampling protocols is ... [more ▼]

Radio tracking has been extensively used to enhance our knowledge on the movement and home range of fish in general and salmonids in particular. However, the use of various temporal sampling protocols is likely to overlook fish movements, and produce experimental artefacts, the amplitude of which is unknown and may compromise comparison of fish behaviours revealed by different protocols. Starting from a day-by-day tracking study of brown treat in Belgian waters (Aisne stream, nine fish, minimum 39 daily locations per fish), we re-examined their home range and mobility, through a subsampling process, as if the fish had been located at longer time intervals (2-14 days). The estimates from subsamples were compared to the original data set in order to quantify the corresponding reduction of accuracy from observed data, and how far this could be predicted on the basis of locating frequency. The results clearly indicate that all intervals longer than one day generally generate substantial biases (reduction of accuracy from 0 to 82% for home range and from 5 to 92% for mobility) but these can be partly corrected through the use of predictive models. This analysis demonstrates that any comparison between studies relying on different locating frequencies can generate some ambiguity when interpreting biological phenomena or geographical differences. (C) 2000 Ifremer/CNRS/INRA/IRD/Cemagref/Editions scientifrques et medicales Elsevier SAS. [less ▲]

Detailed reference viewed: 132 (5 ULg)
Full Text
See detailLa Convention de Bruxelles
Boularbah, Hakim ULg; Nuyts, Arnaud; Watte, N.

in Journal des Tribunaux Droit Européen (2000)

Detailed reference viewed: 6 (0 ULg)
Peer Reviewed
See detailReduced Sperm Counts In Guppies (Poecilia Reticulata) Following Exposure To Low Levels Of Tributyltin And Bisphenol A
Haubruge, Eric ULg; Petit, François ULg; Gage, Mjg.

in Proceedings of the Royal Society B-Biological Sciences (2000), 267(1459),

Detailed reference viewed: 37 (14 ULg)
Full Text
See detailLe maillage vert... ou les réseaux de toute nature...
Mougenot, Catherine ULg; Melin, Eric ULg

in Cahiers de l'Urbanisme (Les) (2000), (28-29), 42-45

Depuis quelques années se développent un peu partout des projets de sentiers nature, de réseaux de cheminements lents, de création de mares, de jardin au naturel, etc. Ils peuvent être regroupés sous le ... [more ▼]

Depuis quelques années se développent un peu partout des projets de sentiers nature, de réseaux de cheminements lents, de création de mares, de jardin au naturel, etc. Ils peuvent être regroupés sous le terme de maillage vert ou de réseau écologique. L'article souligne que pour que de tels projets aboutissent, ils supposent une interaction étroite entre réseaux naturels et réseaux humains. [less ▲]

Detailed reference viewed: 112 (22 ULg)
Full Text
Peer Reviewed
See detailRelative Accuracy of the Identification of Ovarian Structures in the Cow by Ultrasonography and Palpation Per Rectum
Hanzen, Christian ULg; Pieterse, M.; Szenci, Otto et al

in Veterinary Journal (2000), 159(2), 161-170

Manual palpation or ultrasonographic examination of the cow's genital tract are currently used by veterinarians involved in reproductive management, but knowledge of the potential and the limitations of ... [more ▼]

Manual palpation or ultrasonographic examination of the cow's genital tract are currently used by veterinarians involved in reproductive management, but knowledge of the potential and the limitations of both methods is important to obtain an optimal accuracy in the diagnosis of physiological and pathological ovarian structures. This review presents the main features of manual and ultrasonographic characteristics of follicles, corpora lutea (with or without a cavity), follicular and lutenized cysts and the reliability of the two methods is compared. Manual diagnosis of follicles <10 mm is rather inaccurate, but ultrasound offers the possibility to diagnose follicles <5 mm and to measure their inner diameter. The predictive values of the presence or absence of a corpus luteum as determined by palpation are similar (78 vs. 75%). Manual or ultrasonographic diagnosis of the growing or regressing corpus luteum is rather difficult. The positive predictive value of a mature corpus luteum diagnosed by ultrasonography is lower (87%) than the negative predictive value (92%). Compared to manual palpation, ultrasonography permits a better estimation of the number and to determine more precisely the size of the mature corpus luteum. The positive values for follicular cysts diagnosed by palpation or by ultrasonography are 66 and 74% respectively, and for luteal cysts, the values are 66 and 85%, respectively. Manual palpation or ultrasonography are useful tools to diagnose ovarian structures in the cow. The accuracy of such methods can be enhanced by securing information on the reproductive history of the animal, palpation of uterine horns, vaginal examination or progesterone determinations. [less ▲]

Detailed reference viewed: 52 (5 ULg)
Full Text
Peer Reviewed
See detailEffect of Temperature on Growth of Psychrophilic and Psychrotrophic Members of Rhodotorula Aurantiaca
Sabri, Ahmed ULg; Jacques, Philippe ULg; Weekers, Frederic et al

in Applied Biochemistry and Biotechnology (2000), 84-86(Spring), 391-9

The thermo-dependence of growth kinetic parameters was investigated for the Antarctic psychrophilic strain Rhodotorula aurantiaca and a psychrotrophic strain of the same species isolated in Belgium ... [more ▼]

The thermo-dependence of growth kinetic parameters was investigated for the Antarctic psychrophilic strain Rhodotorula aurantiaca and a psychrotrophic strain of the same species isolated in Belgium (Ardennes area). Cell production, maximum growth rate (mu max), and half-saturation constant for glucose uptake (Ks) of both yeasts were temperature dependent. For the two yeasts, a maximum cell production was observed at about 0 degree C, and cell production decreased when temperature increased. The mu max values for both strains increased with temperature up to a maximum of 10 degrees C for the psychrophilic strain and 17 degrees C for the psychrotrophic strain. For both yeasts, Ks for glucose was relatively constant at low temperatures. It increased at temperatures above 10 degrees C for the psychrophilic strain and 17 degrees C for the psychrotrophic strain. Although its glucose affinity was lower, the psychrotrophic strain grew more rapidly than the psychrophilic one. The difference in growth rate and substrate affinity was related to the origin of the strain and the adaptation strategy of R. aurantiaca to environmental conditions. [less ▲]

Detailed reference viewed: 176 (21 ULg)
Peer Reviewed
See detailFate of the nucleolar vacuole during resumption of cell cycle in pea cotyledonary buds
Jennane, A.; Thiry, Marc ULg; Diouri, M. et al

in Protoplasma (2000), 210(3-4), 172-178

Meristematic cells of pea cotyledonary buds blocked in G(0-1) state contain a small nucleolus with a large central clear area surrounded by a fibrillar rim. The nucleolar structure varies according to the ... [more ▼]

Meristematic cells of pea cotyledonary buds blocked in G(0-1) state contain a small nucleolus with a large central clear area surrounded by a fibrillar rim. The nucleolar structure varies according to the cell cycle from the G(0-1)-blocked state until the first mitoses occurring between 24 and 27 h after removal of the main stem. In order to better identify and understand the role of the central area in the nucleolar function, its content was investigated by cytochemical and terminal deoxynucleotidyl transferase-immunogold methods. The central area showed the characteristics of a vacuole commonly constituted of the condensed chromatin, ribonucleoprotein granules, and lack of argyrophilic proteins. 3 h alter decapitation, a thickening of the fibrillar rim occurred, accompanied by an increase of granules in the vacuole. After 6 h, the unique vacuole broke up into two to four small vacuoles in which the granules are more abundant. After 12 h the nucleolus acquired compact structure with few minute vacuoles dispersed over the fibrillar component. During the whole cell cycle, the condensed chromatin is always observed in the vacuole. Our findings suggest that the appearance of the vacuoles is subsequent to the output of preribosomes from nucleolus. These vacuoles might play a role in condensation and decondensation of the chromatin. [less ▲]

Detailed reference viewed: 27 (1 ULg)
Full Text
Peer Reviewed
See detailLaser-induced transitions between triply excited hollow states
Madsen, L. B.; Schlagheck, Peter ULg; Lambropoulos, P.

in Physical Review. A (2000), 62(6), 062719

Using complex scaling and a correlated basis constructed in terms of B splines, we calculate the Li+ photoion yield in the presence of a laser-induced coupling between the triply excited 2s(2)2p(P-2(0 ... [more ▼]

Using complex scaling and a correlated basis constructed in terms of B splines, we calculate the Li+ photoion yield in the presence of a laser-induced coupling between the triply excited 2s(2)2p(P-2(0)) and 2s2p(2)(D-2(e)) resonances in lithium, the first of which is assumed to be excited by synchrotron radiation from the ground state. The laser coupling between the triply excited states is shown to lead to a significant and readily measurable modification of the line profile which provides a unique probe of the dipole strength between highly correlated triply excited states. We also present results for some higher-lying triply excited states of P-2(0) symmetry. [less ▲]

Detailed reference viewed: 7 (1 ULg)
Peer Reviewed
See detailLes arcanes de la prescription de l'action publique
Jacobs, Ann ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2000)

Detailed reference viewed: 17 (0 ULg)
Peer Reviewed
See detailMultimedia education in headache: the European Neurological Network.
Russell, M. B.; Dremstrup Nielsen, K.; Rasmussen, C. et al

in European Journal of Neurology (2000), 7(3), 355-62

The European Neurological Network is a European Economic Community supported project. The purpose of the project was to develop a multimedia educational tool for general practitioners in order to improve ... [more ▼]

The European Neurological Network is a European Economic Community supported project. The purpose of the project was to develop a multimedia educational tool for general practitioners in order to improve their management of sleep disorders, epilepsy and headache. The project involves approximately one hundred engineers and physicians from Belgium, Denmark, England, Finland, France, Germany, Italy, Portugal and Spain. This paper concerns the multimedia educational tool on headache. The system consists of five different modules, i.e. classification, clinical data, headache tutorial, diagnostic headache diary and nomenclature. It is possible to move between the modules both vertically and horizontally. The headache classification of the International Headache Society is provided in full text as a work of reference. This classification is used world wide and has been adopted by International Classification of Diseases 10 Neurological Adaptation (ICD-10 NA) and the World Health Organisation. The clinical data concentrate on migraine and tension-type headache, the two most common headache disorders, but data on familial hemiplegic migraine, cluster headache, drug-induced headache and secondary headaches are also available. The headache tutorial consists of case records that the user can test their diagnostic abilities on. The diagnostic headache diary is an expert system on headache diagnostics. It can be filled in during a consultation in order to provide the headache diagnosis or it can be printed and used by the headache patient to record headache attacks and medicine consumption. The nomenclature module provides an explanation of words and expressions used in the system. [less ▲]

Detailed reference viewed: 22 (0 ULg)
Peer Reviewed
See detailLa pleuropneumonie contagieuse bovine
Linden, Annick ULg; Desmecht, Daniel ULg

in Vlaams Diergeneeskundig Tijdschrift (2000), 69

Detailed reference viewed: 17 (2 ULg)
See detailPour une démarche de qualité dans la formation continuée des enseignants : rôle de l'évaluation
Giot, Bernadette ULg

in Point sur la Recherche en Education (Le) (2000), 21

Detailed reference viewed: 20 (3 ULg)
Full Text
Peer Reviewed
See detailThe photoabsorption and Constant Ion State Spectroscopy of Vinyl Bromide.
Hoxha, A.; Locht, Robert ULg; Leyh, Bernard ULg et al

in Chemical Physics (2000), 260

In this paper we report the photoabsorption and the constant ion state spectroscopy of vinyl bromide (C2H3Br). The photoabsorption spectrum was measured using synchrotron radiation and was investigated in ... [more ▼]

In this paper we report the photoabsorption and the constant ion state spectroscopy of vinyl bromide (C2H3Br). The photoabsorption spectrum was measured using synchrotron radiation and was investigated in detail between 5.0 and 12.0 eV photon energy revealing many previously unobserved structures. These features were analyzed in terms of valence to virtual valence transitions and Rydberg series. The examination of the three Rydberg series converging towards the first ionization threshold (2a"->ns, 2a"->np and 2a"->nd) leads to wavenumbers of 335+/-30, 690+/-30 and 1305+/-30 cm-1. The vibrational wavenumbers of the progressions belonging to Rydberg series converging towards the second ionization threshold are 485+/-30 and 1145+/-50 cm-1. Ab initio calculations helped the assignment of the valence transitions and of the observed vibrational wave numbers in the Rydberg series. Constant Ionic State spectra were recorded for vibronic states corresponding to the first and the second electronic states of the ion. Their fine structures are assigned to the autoionization of Rydberg states. The autoionization decay of these Rydberg states is analyzed qualitatively in terms of the vibrational nature of the final ionic state. [less ▲]

Detailed reference viewed: 55 (8 ULg)
Full Text
Peer Reviewed
See detailPhalangeal osteosonogrammetry study: age-related changes, diagnostic sensitivity, and discrimination power. The Phalangeal Osteosonogrammetry Study Group.
Wuster, C; Albanese, C; De Aloysio, D et al

in Journal of Bone and Mineral Research (2000), 15(8), 1603-14

Phalangeal osteosonogrammetry was introduced as a method for bone tissue investigation in 1992. It is based on the measure of the velocity of ultrasound (amplitude-dependent speed of sound [AD-SoS]) and ... [more ▼]

Phalangeal osteosonogrammetry was introduced as a method for bone tissue investigation in 1992. It is based on the measure of the velocity of ultrasound (amplitude-dependent speed of sound [AD-SoS]) and on the interpretation of the characteristics of the ultrasound signal. In this study we have collected a database of 10,115 subjects to evaluate the performance of AD-SoS and to develop a parameter that is able to quantify the signal characteristics: ultrasound bone profile index (UBPI). The database only includes females of which 4.5% had documented vertebral osteoporotic fractures, 16% lumbar spine dual X-ray absorptiometry (DXA), and 6% hip DXA. The analysis of the ultrasound signal has shown that with aging the UBPI, first wave amplitude (FWA), and signal dynamics (SDy) follow a trend that is different from the one observed for AD-SoS; that is, there is no increase during childhood. In the whole population, the risk of fracture per SD decrease for AD-SOS was odds ratio (OR) 1.71 (CI, 1.58-1.84). The AD-SoS in fractured subjects was significantly lower than in a group of age-matched nonfractured subjects (p < 0.0001). In a small cohort of hip-fractured patients UBPI proved to be lower than in a control age-matched group (p < 0.0001). When the World Health Organization (WHO) working group criteria were applied to this population to identify the T score value for osteoporosis, for AD-SoS we found a T score of -3.2 and for UBPI we found a T score of -3.14. Sixty-six percent of vertebral fractures were below the AD-SoS -3.2 T score and 62% were below UBPI -3.14. We observed the highest incidence of fractures (63.6%) among subjects with AD-SoS who had both DXA T score values below the threshold. We conclude from this study that ultrasound investigation at the hand phalanges is a valid methodology for osteoporosis assessment. It has been possible to quantify signal changes by means of UBPI, a parameter that will improve the possibility of investigating bone structure. [less ▲]

Detailed reference viewed: 116 (22 ULg)
See detailLa place quantitative et qualitative de la viande dans notre alimentation.
Mary, Arnaud; Sindic, Marianne ULg

in Dieta (2000), (22), 6-11

Detailed reference viewed: 27 (0 ULg)
Full Text
Peer Reviewed
See detailBackground for studies on the treatment of male osteoporosis: state of the art.
Kaufman, J M; Johnell, O; Abadie, Eric ULg et al

in Annals of the Rheumatic Diseases (2000), 59(10), 765-72

Male osteoporosis represents an important, although long underestimated, public health problem. Both in men and in women aging is accompanied by continuous bone loss and by an exponential increase in the ... [more ▼]

Male osteoporosis represents an important, although long underestimated, public health problem. Both in men and in women aging is accompanied by continuous bone loss and by an exponential increase in the incidence of osteoporotic fracture, with a female to male incidence ratio of about 2 to 3 to 1 in the elderly for hip and vertebral fractures. Morbidity after osteoporotic fractures appears to be more serious and mortality more common in men than in women. To date, no single treatment has been proved to be effective and safe in published prospective studies. The present report, based on a systematic search of the literature on male osteoporosis, summarises the state of the art on the clinical consequences of male osteoporosis and its risk factors, in relation to the present state of knowledge about female osteoporosis. This constitutes the background for the design of rational clinical development strategies for therapeutic interventions in male osteoporosis. From this review of the literature it is apparent that notwithstanding the existing sex differences in pathophysiology of osteoporosis and the difference in age-specific incidence of osteoporotic fractures, there are also important similarities between osteoporosis in women and men. The higher incidence of fracture in women than in men results from quantitative differences in risk factors rather than from different risk factors. Even though there are sex differences in bone geometry, incidence of fracture seems to be similar in men and women for a same absolute areal bone mineral density. However, the lack of data on the changes in fracture rates in men resulting from pharmacological intervention, leading to changes in bone mineral density or bone turnover, remains the main limitation for extrapolation of established treatment outcomes from women to men. [less ▲]

Detailed reference viewed: 37 (4 ULg)
Full Text
Peer Reviewed
See detailThe relationship between airways inflammation and asthma severity.
Louis, Renaud ULg; Lau, L. C.; Bron, A. O. et al

in American Journal of Respiratory & Critical Care Medicine (2000), 161(1), 9-16

In order to investigate the relationship between airways inflammation and disease severity, and improve the understanding of persistent asthma, 74 asthmatics, with disease severity ranging from ... [more ▼]

In order to investigate the relationship between airways inflammation and disease severity, and improve the understanding of persistent asthma, 74 asthmatics, with disease severity ranging from intermittent, to mild to moderate and severe persistent (classified according to the Global Initiative for Asthma [GINA] guidelines), and 22 nonatopic control subjects were studied using the method of induced sputum. Sputum was analyzed for total and differential cell counts concentrations of albumin, and levels of eosinophil cationic protein (ECP), myeloperoxidase (MPO), and tryptase, inflammatory mediators reflecting eosinophil, neutrophil, and mast cell activation. Asthma severity (assessed by FEV(1), peak expiratory flow [PEF] variability, and daily symptom scores) and methacholine airways responsiveness were related to sputum eosinophilia and ECP. In addition, sputum neutrophilia and MPO levels correlated, albeit weakly, with PEF variability and symptom scores, respectively. Tryptase concentrations were raised in mild to moderate asthmatics. Albumin concentrations were significantly raised across the spectrum of asthma severity and correlated with those of tryptase and ECP. Despite treatment with either high doses of inhaled corticosteroids or oral corticosteroids, prominent eosinophilic inflammation with raised ECP was noted. This study points to persistent, disease severity-related airways inflammation in asthma, involving eosinophils, mast cells, and neutrophils, which is evident despite treatment with corticosteroids. [less ▲]

Detailed reference viewed: 35 (3 ULg)
Full Text
Peer Reviewed
See detailAuditory steady-state response and bispectral index for assessing level of consciousness during propofol sedation and hypnosis.
Bonhomme, Vincent ULg; Plourde, Gilles; Meuret, Pascal et al

in Anesthesia and analgesia (2000), 91(6), 1398-403

We assessed the effect of propofol on the auditory steady-state response (ASSR), bispectral (BIS) index, and level of consciousness in two experiments. In Experiment 1, propofol was infused in 11 subjects ... [more ▼]

We assessed the effect of propofol on the auditory steady-state response (ASSR), bispectral (BIS) index, and level of consciousness in two experiments. In Experiment 1, propofol was infused in 11 subjects to obtain effect-site concentrations of 1, 2, 3, and 4 microg/mL. The ASSR and BIS index were recorded during baseline and at each concentration. The ASSR was evoked by monaural stimuli. Propofol caused a concentration-dependent decrease of the ASSR and BIS index values (r(2) = 0.76 and 0.93, respectively; P<0.0001). The prediction probability for loss of consciousness was 0.89, 0.96, and 0.94 for ASSR, BIS, and arterial blood concentration of propofol, respectively. In Experiment 2, we compared the effects of binaural versus monaural stimulus delivery on the ASSR in six subjects during awake baseline and propofol-induced unconsciousness. During baseline, the ASSR amplitude with binaural stimulation (0.47+/-0.13 microV, mean +/- SD) was significantly (P<0.002) larger than with monaural stimulation (0.35+/-0.11 microV). During unconsciousness, the amplitude was 0.09+/-0.09 microV with monaural and 0.06+/-0.04 microV with binaural stimulation (NS). The prediction probability for loss of consciousness was 0.97 (0.04 SE) for monaural and 1.00 (0.00 SE) for binaural delivery. We conclude that the ASSR and BIS index are attenuated in a concentration-dependent manner by propofol and provide a useful measure of its sedative and hypnotic effect. BIS was easier to use and slightly more sensitive. The ASSR should be recorded with binaural stimulation. The ASSR and BIS index are both useful for assessing the level of consciousness during sedation and hypnosis with propofol. However, the BIS index was simpler to use and provided a more sensitive measure of sedation. IMPLICATIONS: We have compared two methods for predicting whether the amount of propofol given to a human subject is sufficient to cause unconsciousness, defined as failure to respond to a simple verbal command. The two methods studied are the auditory steady-state response, which measures the electrical response of the brain to sound, and the bispectral index, which is a number derived from the electroencephalogram. The results showed that both methods are very good predictors of the level of consciousness; however, bispectral was easier to use. [less ▲]

Detailed reference viewed: 31 (0 ULg)
Full Text
Peer Reviewed
See detailHormonal control of proliferation in meristematic agglomerates of Eucalyptus camaldulensis Dehn
Arezki, Ouoimare; Boxus, Philippe; Kevers, Claire ULg et al

in In Vitro Cellular & Developmental Biology-Plant (2000), 36(5), 398-401

Eucalyptus camaldulensis can he micropropagated through so-called meristematic agglomerates (MAs). MAs (4-6 mm diameter) are dense shoot clusters initiated by the Outgrowth of numerous successive buds ... [more ▼]

Eucalyptus camaldulensis can he micropropagated through so-called meristematic agglomerates (MAs). MAs (4-6 mm diameter) are dense shoot clusters initiated by the Outgrowth of numerous successive buds. Their reddish nature is associated with an increase ill their endogenous cytokinin level during the exponential phase of growth. A simultaneous decrease in the auxin level favors a high cytokinin/auxin ratio. A low level of polyamines occurs at the time of the lowest level of auxins. Slow hormone release by activated charcoal plays a role in this very prolific organogenesis. [less ▲]

Detailed reference viewed: 143 (6 ULg)
Full Text
Peer Reviewed
See detailLate Frasnian - Famennian climates based on palynomorph analyses and the question of the late Devonian glaciations.
Streel, Maurice ULg; Caputo, MV; Loboziak, S et al

in Earth-Science Reviews (2000), 52(1-3), 121-173

Detailed reference viewed: 28 (3 ULg)
Peer Reviewed
See detailMass-murder deletion of 19 Orfs from Saccharomyces cerevisiae chromosome XI
Vandenbol, Micheline ULg; Fairhead, C.

in Gene (2000), 247(1-2),

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailEigenschappen van glucosamine
Reginster, Jean-Yves ULg; Halkin, V

in Medi-Sfeer (2000), 116

Detailed reference viewed: 17 (1 ULg)
Full Text
Peer Reviewed
See detailTuna and dolphin associations in the Northeast Atlantic: Evidence of different ecological niches from stable isotope and heavy metal measurements
Das, Krishna ULg; Lepoint, Gilles ULg; Loizeau, Véronique et al

in Marine Pollution Bulletin (2000), 40

Associations of tunas and dolphins in the wild are quite frequent events and the question arises how predators requiring similar diet in the same habitat share their environmental resources. As isotopic ... [more ▼]

Associations of tunas and dolphins in the wild are quite frequent events and the question arises how predators requiring similar diet in the same habitat share their environmental resources. As isotopic composition of an animal is related to that of its preys, stable isotopes (13C/12C and 15N/14N) analyses were performed in three predator species from the Northeast Atlantic: the striped dolphin, Stenella coeruleoalba, the common dolphin Delphinus delphis, and the albacore tuna, Thunnus alalunga, and compared to their previously described stomach content. Heavy metals (Cd, Zn, Cu and Fe) are mainly transferred through the diet and so, have been determined in the tissues of the animals. Tunas muscles display higher delta15N than in common and striped dolphins (mean: 11.4 0/00 vs. 10.3 0/00 and 10.4 0/00, respectively) which reflects its higher trophic level nutrition. Higher delta13C are found in common (-18.4 0/00) and striped dolphin (-18.10/00) muscles than in albacore tuna (-19.3 0/00) likely in relation with its migratory pattern. The most striking feature is the presence of two levels of cadmium concentrations in the livers of the tunas (32 mg kg-1 dry weight vs. 5 mg kg-1 dry weight). These two groups also differ by their iron concentrations and their delta15N and delta 13C liver values. These results suggest that in the Biscay Bay, tunas occupy two different ecological niches likely based on different squid input in their diet. [less ▲]

Detailed reference viewed: 133 (11 ULg)
Full Text
Peer Reviewed
See detailThe Legionella (Fluoribacter) gormanii metallo-beta-lactamase: a new member of the highly divergent lineage of molecular-subclass B3 beta-lactamases.
Boschi, L.; Mercuri, Paola ULg; Riccio, M. L. et al

in Antimicrobial agents and chemotherapy (2000), 44(6), 1538-43

A metallo-beta-lactamase determinant was cloned from a genomic library of Legionella (Fluoribacter) gormanii ATCC 33297(T) constructed in the plasmid vector pACYC184 and transformed into Escherichia coli ... [more ▼]

A metallo-beta-lactamase determinant was cloned from a genomic library of Legionella (Fluoribacter) gormanii ATCC 33297(T) constructed in the plasmid vector pACYC184 and transformed into Escherichia coli DH5alpha, by screening for clones showing a reduced susceptibility to imipenem. The product of the cloned determinant, named FEZ-1, contains a 30-kDa polypeptide and exhibits an isoelectric pH of 7.6. Sequencing revealed that FEZ-1 is a molecular-class B beta-lactamase which shares the closest structural similarity (29.7% of identical residues) with the L1 enzyme of Stenotrophomonas maltophilia, being a new member of the highly divergent subclass B3 lineage. All the residues that in L1 are known to be directly or indirectly involved in coordination of the zinc ions were found to be conserved also in FEZ-1, suggesting that the geometry of zinc coordination in the active site of the latter enzyme is identical to that of L1. Unlike L1, however, FEZ-1 appeared to be monomeric in gel permeation chromatography experiments and exhibited a distinctive substrate specificity with a marked preference for cephalosporins and meropenem. The properties of FEZ-1 overall resembled those of a beta-lactamase previously purified from the same strain of L. gormanii (T. Fujii, K. Sato, K. Miyata, M. Inoue, and S. Mitsuhashi, Antimicrob. Agents Chemother. 29:925-926, 1986) and are as yet unique among class B enzymes, reinforcing the notion that considerable functional heterogeneity can be encountered among members of this class. A system for overexpression of the bla(FEZ-1) gene in E. coli, based on the T7 phage promoter, was also developed. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailLes non-recommandations dans le traitement de l'arthrose et de la polyarthrite rhumatoïde, ou pourquoi la médecine basée sur le niveau de preuve ne s'applique pas (encore) à la rhumatologie
Malaise, Michel ULg

in Revue Médicale de Liège (2000), 55(5), 466-475

The speed with which the phrase "Evidence-Based Medicine" has entered our language has been astonishing. Virtually all medical areas are concerned, but it probably applies best when clearcut diagnosis can ... [more ▼]

The speed with which the phrase "Evidence-Based Medicine" has entered our language has been astonishing. Virtually all medical areas are concerned, but it probably applies best when clearcut diagnosis can be made or when mortality or well-defined morbidity are the outcomes, two conditions not really frequently encountered in rheumatology. We will discuss why rheumatology is probably not ready yet for the concept and will systematically review why "Evidence-Based Medicine" could in fact be "evidence-biased medicine". We will emphasize why evidence-based medicine can not replace the personal experience and knowledge of patients, two major corner-stones in the clinician's daily work, but should simply be an access to scientific data for the benefit of both patient and physician. [less ▲]

Detailed reference viewed: 19 (2 ULg)
See detailLes artisans-producteurs face aux problèmes de conservation.
Sindic, Marianne ULg; Rolland, Sandrine

in Dieta (2000), (20), 6-7

Detailed reference viewed: 16 (1 ULg)
See detailLes brulis, un outil de gestion de la faune en region Afrique inter-tropicale.
Cornelis, D.; Lungren, C.; Ouedraogo, Mohamar moussa ULg et al

in Parcs & Réserves (2000), 55(3-4),

Detailed reference viewed: 34 (13 ULg)
See detailLa trisomie 21 : étude d’une stratégie de mémorisation
Frenkel, Stéphanie ULg

in Le Journal des Psychologues (2000), 182

Detailed reference viewed: 34 (8 ULg)
Full Text
Peer Reviewed
See detailL'osteoporose involutive de la femme: strategie therapeutique. Un point de vue actualise du Belgian Bone Club.
Kaufman, J M; Body, J J; Boonen, S et al

in Revue Médicale de Liège (2000), 55(5), 443-8

Osteoporosis is now considered as a major public health issue and a serious threat for the quality of life of elderly women. Several new compounds are currently marketed for the prevention and treatment ... [more ▼]

Osteoporosis is now considered as a major public health issue and a serious threat for the quality of life of elderly women. Several new compounds are currently marketed for the prevention and treatment of involutional osteoporosis in women. Therefore, it is important to offer to the practitioners pragmatic solutions to be used for the rational management of this disorder. This article is the result of a national consensus offering practical guidelines for the management of osteoporotic patients, based on the current published data. [less ▲]

Detailed reference viewed: 61 (3 ULg)
Full Text
Peer Reviewed
See detailPharma clinics. Comment je traite ... un trouble de la kaliémie
Neven, Ingrid; Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2000), 55(1), 4-7

The treatment of dyskalemia must be primarily etiological and later symptomatic. When moderate but significant hypokalemia exists (K < 3 mmol/l or 3.5 mmol/l with cardiac disease), oral K supplements must ... [more ▼]

The treatment of dyskalemia must be primarily etiological and later symptomatic. When moderate but significant hypokalemia exists (K < 3 mmol/l or 3.5 mmol/l with cardiac disease), oral K supplements must be given. The intravenous route must be reserved for emergency or impossible oral administration. Acute and severe hyperkalemia (K > 7 mmol/l) must be first corrected by different intravenous measures with secondary oral intervention. In chronic and/or moderate hyperkalemia (K > 5.5 mmol/l), the oral route for treatment is prefered. In any case, the research of the cause (mainly drug induced) is fundamental. [less ▲]

Detailed reference viewed: 196 (15 ULg)
Full Text
Peer Reviewed
See detailDe la relation spatiale entre les personnages des groupes statuaires royaux en Égypte pharaonique
Laboury, Dimitri ULg

in Revue d'Egyptologie (2000), 51

Given the unity of representational system of Ancient Egypt, the author proposes to investigate the possibility of application of the principle of the "rabattement" or folding back in a three-dimensional ... [more ▼]

Given the unity of representational system of Ancient Egypt, the author proposes to investigate the possibility of application of the principle of the "rabattement" or folding back in a three-dimensional art such as statuary, considering the case of the royal statue groups [less ▲]

Detailed reference viewed: 42 (2 ULg)
Peer Reviewed
See detailTracabilite dans la filiere animale.
Portetelle, Daniel ULg; Haezebroeck, V.; Mortiaux, F. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2000), 4(4),

Detailed reference viewed: 8 (2 ULg)
Full Text
Peer Reviewed
See detailTectonic vs. shallow origin of geodetically inferred ground movements: an NE Ardenne (Belgium) case
Demoulin, Alain ULg; Vliegen, Bernard; Charlier, Robert ULg

in Earth and Planetary Science Letters (2000), 181(1-2), 217-228

In order to get a better insight into the temporal pattern of height change variations in a moderately seismic intraplate area, a 1 km long section has been weekly leveled from April, 21, 1997 to January ... [more ▼]

In order to get a better insight into the temporal pattern of height change variations in a moderately seismic intraplate area, a 1 km long section has been weekly leveled from April, 21, 1997 to January, 12, 1998 in NE Ardenne (Belgium). As this section is located very close to a small reservoir of 25 X 10(6) m(3), it also allowed the influence of lake level variations on the nearby ground motion to be studied. The measured height difference variations show a maximum amplitude of 3.45 mm, with weekly values not exceeding 1 mm. A two-dimensional (2D) finite element modeling confirms that waterload variations in the lake are the primary cause of movement of the section, inducing maximum ground subsidence of about 2 cm and seasonal tilting of 3-4 mu rads within a range of 2-3 km. We also show that a fault passively alters the spatial distribution of the waterload-dependent movements. The removal of this component from the observed ground motion leaves oscillating residual displacements characterized by an amplitude of 1-1.5 mm and a 'period' of about 2 months. We demonstrate that these displacements are independent of rainfall and probably of groundwater fluctuation too. Although most of the residual motions take place on the fault straddled by the leveling section, no credible mechanism can be found to ascribe these motions to a tectonic process. (C) 2000 Elsevier Science B,V. All rights reserved. [less ▲]

Detailed reference viewed: 52 (16 ULg)
Full Text
Peer Reviewed
See detailMujinga ou la soumission inconsciente à l’idéologie régnante
Vanhaegendoren, Koen ULg

in Congo-Meuse. Revue des lettres belges et congolaises de langue française (2000), 4-5

Detailed reference viewed: 58 (1 ULg)
See detailL'évaluation des compétences terminales. Synthèse de l'atelier langues modernes.
Delcomminette, Bernadette; Simons, Germain ULg

in Puzzle (2000), (9), 30-33

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailGas Phase Thermal Denaturation of an Oligonucleotide Duplex and Its Complexes with Minor Groove Binders
Gabelica, Valérie ULg; Rosu, Frédéric ULg; Houssier, Claude ULg et al

in Rapid Communications in Mass Spectrometry : RCM (2000), 14(6), 464-467

Electrospray ionization with in-source collisionally induced dissociation has been used to probe the gas phase stability of an oligonucleotide duplex and its complexes with some minor groove binding drugs ... [more ▼]

Electrospray ionization with in-source collisionally induced dissociation has been used to probe the gas phase stability of an oligonucleotide duplex and its complexes with some minor groove binding drugs. On the basis of the arguments developed in detail by Drahos et al. (J. Mass Spectrom. 1999; 34:1373), this type of experiment can also be described as 'thermal denaturation in the gas phase'. We found that the gas phase denaturation curves were very similar to the solution phase denaturation curves determined by the traditional UV spectrophotometric method and, by analogy with the melting temperature T(m) which characterizes the stability in solution, we define a melting voltage V(m) to characterize the stability in the gas phase. A comparison of the T(m) and V(m) relative values suggests that the structure of the complexes is conserved during the electrospray process which transfers the ions from the solution to the gas phase. [less ▲]

Detailed reference viewed: 67 (7 ULg)
Full Text
Peer Reviewed
See detailMeasurements of hindlimb blood flow recorded using Doppler ultrasound during administration of vasoactive agents in halothane-anesthetized horses
Raisis, Anthea L; Young, Lesley E; Meire, Hylton B et al

in Veterinary Radiology & Ultrasound : The Official Journal of the American College of Veterinary Radiology & the International Veterinary Radiology Association (2000), 41(1), 64-72

The purpose of the study was to determine the ability of Doppler ultrasound to detect changes in femoral blood flow during pharmacologic manipulation of arterial blood pressure. Doppler ultrasonography ... [more ▼]

The purpose of the study was to determine the ability of Doppler ultrasound to detect changes in femoral blood flow during pharmacologic manipulation of arterial blood pressure. Doppler ultrasonography was performed in the femoral vessels of six halothane-anesthetized horses before and during administration of phenylephrine HCI and sodium nitroprusside. The time-averaged mean velocity and volumetric flow were calculated. The contour of the velocity waveform was assessed, and the early diastolic deceleration slope (EDDS) and pulsatility index (PI) were calculated. Administration of phenylephrine HCI resulted in increased mean aortic blood pressure (MABP) by 40% (29.3-53.0%). This caused significant decrease in cardiac output (26.8 to 13.5 l/min), femoral arterial velocity (left artery 7.20 to 4.00 cm/s; right artery 5.01 to 3.39 cm/s) and volumetric flow (left artery 556 to 221 ml/min; right artery 397 to 193 ml/min) in the femoral vessels and significant increase in systemic vascular resistance (163 to 433 dyn-s/cm5), EDDS (1a: 285 to 468: ra: 250 to 481) and PI (1a: 9.38 to 20.4; ra 17.1 to 29.1). Administration of sodium nitroprusside resulted in a decreased MABP of 27.2% (22.5-33%). This increased cardiac output (20.8 to 32.4 L/min), however, no significant changes were observed in femoral blood flow. Despite obvious changes in the waveform contour, no significant change occurred in EDDS or PI. These results suggest that Doppler ultrasound may be useful for measuring femoral blood flow in anesthetized horses. However, waveform analysis appears to be limited when multiple changes occur in central and peripheral haemodynamics. [less ▲]

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailCritical points and reaction paths characterization on a potential energy hypersurface
Ramquet, Marie-Noëlle; Dive, Georges ULg; Dehareng, Dominique ULg

in Journal of Chemical Physics (2000), 112(11), 4923-4934

Most of the time, the definitions of minima, saddle points or more generally order p (p=0,...,n) critical points, do not mention the possibility of having zero Hessian eigenvalues. This feature reflects ... [more ▼]

Most of the time, the definitions of minima, saddle points or more generally order p (p=0,...,n) critical points, do not mention the possibility of having zero Hessian eigenvalues. This feature reflects some flatness of the potential energy hypersurface in a special eigendirection which is not often taken into account. Thus, the definitions of critical points are revisited in a more general framework within this context. The concepts of bifurcation points, branching points, and valley ridge inflection points are investigated. New definitions based on the mathematical formulation of the reaction path are given and some of their properties are outlined. (C) 2000 American Institute of Physics. [S0021-9606(00)01110-7]. [less ▲]

Detailed reference viewed: 32 (0 ULg)
Full Text
See detailPreliminary survey of the palynological content of the Lower Devonian in the Oesling, Luxembourg
Steemans, Philippe ULg; Debbaut, Vincent ULg; Faber, A.

in Bulletin de la Société des Naturalistes Luxembourgeois (2000), 100

Detailed reference viewed: 14 (7 ULg)
Peer Reviewed
See detailMolecular diversity of Microcystis strains (Cyanophyceae, Chroococcales) based on 16S rDNA sequences
LEPERE, Claire ULg; Wilmotte, Annick ULg; Meyer, Barbara

in Systematics and Geography of Plants (2000), 70

Partial 16S rDNA sequences were determined for six Microcystis strains from lakes in the region of Plön (Northern Germany) assigned to four different species on the basis of their morphology. These ... [more ▼]

Partial 16S rDNA sequences were determined for six Microcystis strains from lakes in the region of Plön (Northern Germany) assigned to four different species on the basis of their morphology. These sequences appear very similar to each other and to those of 71 Microcystis strains from four continents available in the databases. This great genotypic homogeneity, as measured by 16S rDNA sequence similarity (334 characters), is contrasting with the conspicuous morphological differences observed for the studied strains. [less ▲]

Detailed reference viewed: 102 (5 ULg)
Full Text
Peer Reviewed
See detailLa chondroprotection aujourd’hui
Reginster, Jean-Yves ULg; Ethgen, Olivier ULg; Dang Vu, T

in Rhumatologie (2000), 52(8), 13-16

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailArtifact-tolerant controllers for automatic drug delivery in anesthesia
Frei, Christian W; Bullinger, Eric ULg; Gentilini, Andrea et al

in Critical Reviews in Biomedical Engineering (2000), 28(1-2), 187-192

This article presents a method for treating measurement artifacts in model-based control systems. A nonlinear modification to the usual observer structure is introduced to prevent the measurement ... [more ▼]

This article presents a method for treating measurement artifacts in model-based control systems. A nonlinear modification to the usual observer structure is introduced to prevent the measurement artifacts from winding up the controller states. It is shown how stability of the closed loop system can he analyzed and an example of a successful application in a clinical study is provided. [less ▲]

Detailed reference viewed: 18 (4 ULg)
Full Text
Peer Reviewed
See detailCharacterization Of The Lipid-Binding Properties And Lipoprotein Lipase Inhibition Of A Novel Apolipoprotein C-Iii Variant Ala23thr
Liu, Hq.; Labeur, C.; Xu, Cf. et al

in Journal of Lipid Research (2000), 41(11), 9201-12

The physicochemical properties of recombinant wild type and three site-directed mutants of apolipoprotein C-III (apoC-III), designed by molecular modeling to alter specific amino acid residues implicated ... [more ▼]

The physicochemical properties of recombinant wild type and three site-directed mutants of apolipoprotein C-III (apoC-III), designed by molecular modeling to alter specific amino acid residues implicated in lipid binding (L9T/T20L, F64A/W65A) or LPL inhibition (K21A), were compared. Relative lipid binding efficiencies to dimyristoylphosphatidylcholine (DMPC) were L9T/T20L > WT >K21A > F64A/W65A with an inverse correlation with size of the discoidal complexes formed. Physicochemical analysis (Trp fluorescence, circular dichroism, and GdnHCl denaturation) suggests that L9T/T20L forms tighter and more stable lipid complexes with phospholipids, while F64A/W65A associates less tightly. Lipid displacement properties were tested by gel-filtrating apoE:dipalmitoylphosphatidylcholine (DPPC) discoidal complexes mixed with the various apoC-III variants. All apoC-III proteins bound to the apoE:DPPC complexes; the amount of apoE displaced from the complex was dependent on the apoC-III lipid binding affinity. All apoC-III proteins inhibited LPL in the presence or absence of apoC-II, with F64A/W65A displaying the most inhibition, suggesting that apoC-III inhibition of LPL is independent of lipid binding and therefore of apoC-II displacement. Taken together. these data suggest that the hydrophobic residues F64 and W65 are crucial for the lipid binding properties of apoC-III and that redistribution of the N-terminal helix of apoC-III (L9T/T20L) enhances the stability of the lipid-bound protein, while LPL inhibition by apoC-III is likely to be due to protein:protein interactions. [less ▲]

Detailed reference viewed: 11 (1 ULg)
Full Text
Peer Reviewed
See detailSurfactin and iturin A effects on Bacillus subtilis surface hydrophobicity.
Ahimou, F.; Jacques, P.; Deleu, Magali ULg

in Enzyme & Microbial Technology (2000), 27(10), 749-754

The synthesis of extracellular molecules such as biosurfactants should have major consequences on bacterial adhesion. These molecules may be adsorbed on surfaces and modify their hydrophobicities. Certain ... [more ▼]

The synthesis of extracellular molecules such as biosurfactants should have major consequences on bacterial adhesion. These molecules may be adsorbed on surfaces and modify their hydrophobicities. Certain strains of Bacillus subtilis synthesize the lipopeptides, which exhibit antibiotic and surface active properties. In this study the high-performance liquid chromatography (HPLC) analysis of the culture supernatants of the seven B. subtilis strains, showed that the lipopeptide profile varied greatly according to the strain. Among the three lipopeptide types, only iturin A was produced by all B. subtilis strains. Bacterial hydrophobicity, evaluated by the water contact angle measurements and the hydrophobic interaction chromatography, varied according to the strain. Two strains (ATCC 15476 and ATCC 15811) showing extreme behaviors in term of hydrophobicity were selected to study surfactin and iturin A effects on bacterial hydrophobicity. The two lipopeptides modified the B. subtilis surface hydrophobicity. Their effects varied according to the bacterial surface hydrophobic character, the lipopeptide type and the concentration. Lipopeptide adsorption increased the hydrophobicity of the hydrophilic strain but decreased that of the hydrophobic. Comparison of lipopeptide effects on B. subtilis surface hydrophobicity showed that surfactin was more effective than iturin A for the two strains tested. [less ▲]

Detailed reference viewed: 46 (1 ULg)
Full Text
Peer Reviewed
See detailComparative Effects Of Deltamethrin And Neem Kernel Solution Treatments On Diamondback Moth And Cotesia Plutellae (Hym., Braconidae) Parasitoid Populations In The Cotonou Peri-Urban Area In Benin
Goudegnon, Ae.; Kirk, Aa.; Schiffers, Bruno ULg et al

in Journal of Applied Entomology-Zeitschrift Fur Angewandte Entomologie (2000), 124(3-4), 141-144

Detailed reference viewed: 17 (0 ULg)
Full Text
Peer Reviewed
See detailThymic neuroendocrine self-antigens. Role in T-cell development and central T-cell self-tolerance
Geenen, Vincent ULg; Martens, Henri ULg; Brilot, Fabienne et al

in Annals of the New York Academy of Sciences (2000), 917

Detailed reference viewed: 17 (1 ULg)
Full Text
Peer Reviewed
See detailIs the external beam PIXE method suitable for determining ancient silver artifact fineness?
Weber, Georges ULg; Guillaume, J.; Strivay, David ULg et al

in Nuclear Instruments & Methods in Physics Research Section B (2000), 161

In archeometry, the non-destructive characteristic of an analytical method is always very attractive. For most of techniques, besides the need of sampling, difficulties can originate from the shape and ... [more ▼]

In archeometry, the non-destructive characteristic of an analytical method is always very attractive. For most of techniques, besides the need of sampling, difficulties can originate from the shape and the size of the silver artifacts to be analyzed. The external PIXE method should be an answer to this problem but several questions are arising from the implementation of the technique to such a material. The aim of this paper is to specify the experimental procedure as to take into account several parameters, which could induce dramatic errors. Among them it can be pointed out the superficial enrichment in silver, arising from the dissolution of copper and copper oxide, the surface roughness effects, the great importance of the stability of the geometric conditions. The accuracy and the precision of the method are considered within the scope of the results obtained in ancient times by the cupellation with ashbone cupels. In addition. the process involved to obtain silver alloys has been studied in order to define its influence on the real fineness of the objects. (C) 2000 Elsevier Science B.V. All rights reserved. [less ▲]

Detailed reference viewed: 21 (3 ULg)
Full Text
Peer Reviewed
See detailDependency of Premature Ventricular Contractions on Heart Rate and Circadian Rhythms During Childhood
Massin, M. M.; Maeyns, K.; Withofs, Nadia ULg et al

in Cardiology (2000), 93(1-2), 70-3

The aim of the present study was to identify and quantify the rate dependence of premature ventricular contractions (PVC) during childhood. A 24-hour Holter recording was performed in 16 consecutive ... [more ▼]

The aim of the present study was to identify and quantify the rate dependence of premature ventricular contractions (PVC) during childhood. A 24-hour Holter recording was performed in 16 consecutive children, aged 22 days to 11 years (mean age 5.6 years), with frequent (>5,000/day), isolated monomorphic PVC. Those PVC were identified and the length of the preceding sinus cycle was measured. The values were ordered into 50-ms class intervals, and the percentage of PVC for each class was calculated and then analyzed by linear regression analysis. On the basis of the significance of the p value, and the positive or negative value of the slope, we identified a tachycardia-enhanced, a bradycardia-enhanced, and an indifferent pattern. Chronobiologic analysis was made by the cosinor method. All the patients had upper and lower limits of cycle length beyond which PVC disappeared. A tachycardia-enhanced pattern was present in 7 patients and an indifferent one in 9 patients. In the latter a second-degree polynomial correlation was systematically found. Children but not infants had a significant circadian variation in the frequency of PVC with a very variable time of highest incidence. In conclusion, it is possible to identify a circadian rhythm of PVC and a spontaneous trend between their incidence and the length of the preceding cardiac cycle in children. [less ▲]

Detailed reference viewed: 30 (1 ULg)
Full Text
Peer Reviewed
See detailLes sartans face aux inhibiteurs de l'enzyme de conversion de l'angiotensine en présence d'une hypertension artérielle
Krzesinski, Jean-Marie ULg; Sternon, J.

in Revue Médicale de Bruxelles (2000), 21(3), 170-177

Detailed reference viewed: 13 (2 ULg)
Full Text
Peer Reviewed
See detailWhat do the needles, syringes, lancets and reagent strips of diabetic patients become in the absence of a common attitude? About 1070 questionnaires in diabetic clinics.
Bouhanick, B.; Hadjadj, S.; Weekers, Laurent ULg

in Diabètes & Métabolism (2000), 26(4), 288-93

The aim was to investigate the fate of injection and monitoring material after its use by diabetic patients in different countries (France, Belgium, Luxemburg, Switzeland and Tunisia). Some suitable ... [more ▼]

The aim was to investigate the fate of injection and monitoring material after its use by diabetic patients in different countries (France, Belgium, Luxemburg, Switzeland and Tunisia). Some suitable containers are available for disposal but little is known about the attitudes of patients and physicians to them. 1 070 questionnaires were completed by patients (age: 50 +/- 18 years; diabetes duration: 15 +/- 11 years; 2.8 +/- 1.1 injections per day) visiting 109 doctors. Injections were done at home (72.6%), or both at home and at work (26.6%). At home: needles, syringes, lancets and reagent strips were thrown directly into the bin in 46.9%, 49.9%, 52.2% and 67.6% of cases, respectively; and in a closed plastic bottle in 29. 6%, 28.5%, 28.9% and 19.9% of cases, respectively. Specific containers were used in 8.6% and 6.3% of cases for needles and syringes, respectively. 62% of the bottles and containers were thrown directly into the bin, whereas 15.5% were returned to a pharmacy (4.5% taken to hospitals, 2.9% were burned). At work: 63% of the patients brought their needles and syringes home for disposal, 6.9% kept suitable containers at work and 30% threw their materials directly into local bins. We conclude that awareness should be increased and the organization of the collection of used material improved. [less ▲]

Detailed reference viewed: 38 (0 ULg)
Full Text
Peer Reviewed
See detailA new variant of the Ntn hydrolase fold revealed by the crystal structure of L-aminopeptidase D-ala-esterase/amidase from Ochrobactrum anthropi.
Bompard-Gilles, C; Villeret, V; Davies, G J et al

in Structure (2000), 8(2), 153-62

BACKGROUND: The L-aminopeptidase D-Ala-esterase/amidase from Ochrobactrum anthropi (DmpA) releases the N-terminal L and/or D-Ala residues from peptide substrates. This is the only known enzyme to liberate ... [more ▼]

BACKGROUND: The L-aminopeptidase D-Ala-esterase/amidase from Ochrobactrum anthropi (DmpA) releases the N-terminal L and/or D-Ala residues from peptide substrates. This is the only known enzyme to liberate N-terminal amino acids with both D and L stereospecificity. The DmpA active form is an alphabeta heterodimer, which results from a putative autocatalytic cleavage of an inactive precursor polypeptide. RESULTS: The crystal structure of the enzyme has been determined to 1.82 A resolution using the multiple isomorphous replacement method. The heterodimer folds into a single domain organised as an alphabetabetaalpha sandwich in which two mixed beta sheets are flanked on both sides by two alpha helices. CONCLUSIONS: DmpA shows no similarity to other known aminopeptidases in either fold or catalytic mechanism, and thus represents the first example of a novel family of aminopeptidases. The protein fold of DmpA does, however, show structural homology to members of the N-terminal nucleophile (Ntn) hydrolase superfamily. DmpA presents functionally equivalent residues in the catalytic centre when compared with other Ntn hydrolases, and is therefore likely to use the same catalytic mechanism. In spite of this homology, the direction and connectivity of the secondary structure elements differ significantly from the consensus Ntn hydrolase topology. The DmpA structure thus characterises a new subfamily, but supports the common catalytic mechanism for these enzymes suggesting an evolutionary relationship. [less ▲]

Detailed reference viewed: 10 (0 ULg)
Full Text
Peer Reviewed
See detailAffections cardiaques et intolérances à l'effort. 1-Les troubles du rythme.
Amory, Hélène ULg; Art, Tatiana ULg

in Pratique Vétérinaire Equine (2000), 32(Numéro Spécial), 71-78

Detailed reference viewed: 57 (11 ULg)
Full Text
See detailL'écriture en chantier. Une brochure destinée aux enseignants du secondaire
Baye, Ariane ULg; Denooz, Régine

in Cahiers du Service de Pédagogie Expérimentale (SPE) (2000), 7-8

Detailed reference viewed: 30 (1 ULg)
Full Text
Peer Reviewed
See detailL'herpèsvirus bovin de type 4 : virus pathogène ou passager?
Thiry, Etienne ULg; Markine-Goriaynoff, Nicolas; Minner, Frédéric et al

in Point Vétérinaire (2000), 31

Bovine herpesvirus type 4 (BHV-4) is a ubiquitous herpesvirus in cattle. It has been isolated from animals showing a wide variety of clinical signs but few of the isolates have proven experimental ... [more ▼]

Bovine herpesvirus type 4 (BHV-4) is a ubiquitous herpesvirus in cattle. It has been isolated from animals showing a wide variety of clinical signs but few of the isolates have proven experimental pathogenicity. Species that are susceptible to BHV-4 include animals other than ruminants, notably cats and, surprisingly, a primate the owl monkey (Aotus trivirgatus). BHV-4 exists as a latent infection in mononuclear cells. In cattle, BHV-4 has been isolated in animals exhibiting ocular and respiratory conditions and it has been found in females with genital tract conditions such as post-partum metritis and vulvovaginitis. There is some epidemiological and experimental evidence that BHV-4 may be a cause of bovine abortion. There is no vaccine available in Europe and prevention is exclusively by hygiene measures. [less ▲]

Detailed reference viewed: 57 (4 ULg)
Peer Reviewed
See detailL’intégration de l’estompage dans les spatiocartes
Donnay, Jean-Paul ULg

in Bulletin de la Société Géographique de Liège (2000), 38

Detailed reference viewed: 10 (0 ULg)
Full Text
Peer Reviewed
See detailSensitivity analysis for the EPIK vulnerability assessment in a local karstic aquifer
Gogu, Radu Constantin; Dassargues, Alain ULg

in Hydrogeology Journal (2000), 8(3), 337-345

Applying the EPIK parametric method, a vulnerability assessment has been made for a small karstic groundwater system in southern Belgium. The aquifer is a karstified limestone of Devonian age. A map of ... [more ▼]

Applying the EPIK parametric method, a vulnerability assessment has been made for a small karstic groundwater system in southern Belgium. The aquifer is a karstified limestone of Devonian age. A map of intrinsic vulnerability of the aquifer and of the local water-supply system shows three vulnerability areas. A parameter-balance study and a sensitivity analysis were performed to evaluate the influence of single parameters on aquifer-vulnerability assessment using the EPIK method. This approach provides a methodology for the evaluation of vulnerability mapping and for more reliable interpretation of vulnerability indices for karst groundwater resources. [less ▲]

Detailed reference viewed: 135 (7 ULg)
Full Text
Peer Reviewed
See detailLes acteurs d'un système de justice pénale européen
Flore, Daniel ULg

in L’espace judiciaire pénal européen après Tampere (2000)

Detailed reference viewed: 39 (4 ULg)
Peer Reviewed
See detailCrystal structure of a D-aminopeptidase from Ochrobactrum anthropi, a new member of the 'penicillin-recognizing enzyme' family.
Bompard-Gilles, C.; Remaut, H.; Villeret, V. et al

in Structure (2000), 8(9), 971-80

BACKGROUND: beta-Lactam compounds are the most widely used antibiotics. They inactivate bacterial DD-transpeptidases, also called penicillin-binding proteins (PBPs), involved in cell-wall biosynthesis ... [more ▼]

BACKGROUND: beta-Lactam compounds are the most widely used antibiotics. They inactivate bacterial DD-transpeptidases, also called penicillin-binding proteins (PBPs), involved in cell-wall biosynthesis. The most common bacterial resistance mechanism against beta-lactam compounds is the synthesis of beta-lactamases that hydrolyse beta-lactam rings. These enzymes are believed to have evolved from cell-wall DD-peptidases. Understanding the biochemical and mechanistic features of the beta-lactam targets is crucial because of the increasing number of resistant bacteria. DAP is a D-aminopeptidase produced by Ochrobactrum anthropi. It is inhibited by various beta-lactam compounds and shares approximately 25% sequence identity with the R61 DD-carboxypeptidase and the class C beta-lactamases. RESULTS: The crystal structure of DAP has been determined to 1.9 A resolution using the multiple isomorphous replacement (MIR) method. The enzyme folds into three domains, A, B and C. Domain A, which contains conserved catalytic residues, has the classical fold of serine beta-lactamases, whereas domains B and C are both antiparallel eight-stranded beta barrels. A loop of domain C protrudes into the substrate-binding site of the enzyme. CONCLUSIONS: Comparison of the biochemical properties and the structure of DAP with PBPs and serine beta-lactamases shows that although the catalytic site of the enzyme is very similar to that of beta-lactamases, its substrate and inhibitor specificity rests on residues of domain C. DAP is a new member of the family of penicillin-recognizing proteins (PRPs) and, at the present time, its enzymatic specificity is clearly unique. [less ▲]

Detailed reference viewed: 13 (0 ULg)
Full Text
Peer Reviewed
See detailMorphological comparison of the buccal apparatus in two bivalve commensal Teleostei : Encheliophis dubius and Onuxodon fowleri (Carapidae, Ophidiiformes)
Parmentier, Eric ULg; Castro-Aguirre, J. L.; Vandewalle, Pierre ULg

in Zoomorphology (2000), 120

Onuxodon fowleri and Encheliophis dubius are two Carapidae species that live in bivalve hosts and, their diet is made of the same type of prey. The aim of this study is to compare their cephalic ... [more ▼]

Onuxodon fowleri and Encheliophis dubius are two Carapidae species that live in bivalve hosts and, their diet is made of the same type of prey. The aim of this study is to compare their cephalic morphology to see whether 1) the head anatomy of both species is related to the constraints of their way of life, and 2) there are difference between these species and commensal carapids that shelter in other invertebrates. The components of their skeletons and muscles are similar, but differ in size and are arranged differently. In O. fowleri, the buccal cavity is smaller than in E. dubius, the jaws (bearing very large anterior teeth) are larger, the quadrato-mandibular joint lies further to the rear, the fibres of muscle bundles A3a, A2a and A2b are more vertical and insert higher on the neurocranium. The buccal system of O. fowleri appears better suited for ingesting food by biting and grasping. That of E. dubius seems better adapted to a feeding mechanism where sucking would have a more important role. The E. dubius head morphology is more similar to the cephalic anatomy of non-bivalve commensal species than to O. fowleri features. Diet constraints may have greater influence than the different host constraints on the head construction. A simulated backward rotation of the posterior part of the E. dubius suspensorium around the posterior joint between the hyomandibular and the neurocranium brings the jaws and the cheeks to coincide with those of O. fowleri. This model could be indicative of how structure modifications and their influences on annex pieces could in part have a role in the biodiversity. [less ▲]

Detailed reference viewed: 22 (1 ULg)
Peer Reviewed
See detailAdenovirus infections in pigeons
Duchatel, Jean-Pierre ULg; Marlier, Didier ULg; Jauniaux, Thierry ULg et al

in Annales de Médecine Vétérinaire (2000), 144(1), 13-17

This paper describes the different clinical aspects of the adenovirus infections in pigeons. Etiology, epidemiology, pathogenesis, diagnosis and treatment are discussed. The two specific clinical ... [more ▼]

This paper describes the different clinical aspects of the adenovirus infections in pigeons. Etiology, epidemiology, pathogenesis, diagnosis and treatment are discussed. The two specific clinical syndromes of pigeons are mainly described: classical adenovirus and necrotizing-hepatitis. [less ▲]

Detailed reference viewed: 79 (5 ULg)
Full Text
Peer Reviewed
See detailSynthesis and evaluation of new RuCl2(p-cymene)(ER2R') and (eta(1):eta(6)-phosphinoarene)RuCl2 complexes as ring-opening metathesis polymerization catalysts
Jan, Dominique; Delaude, Lionel ULg; Simal, François et al

in Journal of Organometallic Chemistry (2000), 606(1), 55-64

New RuCl2(p-cymene)(ER2R') complexes (E = P, As, Sb; R, R' = H, alkyl, arylalkyl) have been synthesized and used as catalyst precursors for the ring-opening metathesis polymerization (ROMP) of cyclooctene ... [more ▼]

New RuCl2(p-cymene)(ER2R') complexes (E = P, As, Sb; R, R' = H, alkyl, arylalkyl) have been synthesized and used as catalyst precursors for the ring-opening metathesis polymerization (ROMP) of cyclooctene, cyclopentene, and norbornene. When ER2R' was a phosphinoarene, the p-cymene ligand could be displaced upon heating and tethered (eta(1):eta(6)-phosphinoarene)RuCl2 complexes were obtained. Simple thermogravimetric analysis (TGA) of the complexes provided clear-cut indication on their potential catalytic activity in ROMP. (C) 2000 Elsevier Science S.A. All rights reserved. [less ▲]

Detailed reference viewed: 29 (0 ULg)
Full Text
Peer Reviewed
See detailD'un procès à l'autre - pour une esthétique des médias
Servais, Christine ULg

in Recherches en Communication (2000), 13

Detailed reference viewed: 63 (15 ULg)
Full Text
See detailComparaison de l'usage d'huiles d'origine végétale ou minérale pour la lubrification de chaines de tronconneuse.
Bieswal, Marc; Debouche, Charles ULg; van Belle, Laurent

in Silva Belgica (2000), 107(2), 18-21

Des études en laboratoire ont montré que les huiles végétales présentent un pouvoir lubrifiant supérieur aux huiles minérales dans le domaine de la lubrification limite (Kabuya 1995). Par ailleurs, des ... [more ▼]

Des études en laboratoire ont montré que les huiles végétales présentent un pouvoir lubrifiant supérieur aux huiles minérales dans le domaine de la lubrification limite (Kabuya 1995). Par ailleurs, des chiffres avancés dans la littérature ou par des fournisseurs de lubrifiants annoncent la possibilité de réduire la consommation de lubrifiant en passant à un lubrifiant à base d'huile végétale. Des chiffres de réduction d'usure sont aussi avancés par des constructeurs de tronçonneuses. L'essai décrit dans cet article n'a pas permis de confirmer ces réductions de consommation et de frottement. [less ▲]

Detailed reference viewed: 142 (8 ULg)
Peer Reviewed
See detailSibling cannibalism in dorada under experimental conditions. II. Effect of initial size heterogeneity, diet and light regime on early cannibalism
Baras, E.; Maxi, M. Y.; Ndao, J. et al

in Journal of Fish Biology (2000), 57

Detailed reference viewed: 15 (3 ULg)
Full Text
Peer Reviewed
See detailA Topological Reconstruction Theorem for $D^{\infty}$-Modules
Prosmans, Fabienne ULg; Schneiders, Jean-Pierre ULg

in Duke Mathematical Journal (2000), 102(1), 39-86

We prove that any perfect complex of $D^{\infty}-modules may be reconstructed from its holomorphic solution complex provided that we keep track of the natural topology of this last complex. This is to be ... [more ▼]

We prove that any perfect complex of $D^{\infty}-modules may be reconstructed from its holomorphic solution complex provided that we keep track of the natural topology of this last complex. This is to be compared with the reconstruction theorem for regular holonomic D-modules which follows from the well-known Riemann-Hilbert correspondence. [less ▲]

Detailed reference viewed: 27 (14 ULg)
Full Text
Peer Reviewed
See detailEcological, morphological and allozymic differentiation between diploid and tetraploid knapweeds (Centaurea jacea) from a contact zone in the Belgian Ardennes
Hardy, O. J.; Vanderhoeven, SONIA ULg; De Loose, M. et al

in New Phytologist (2000), 146(2), 281-290

In the northeastern part of Belgium, the Centaurea jacea complex shows extensive morphological variation and is represented by a diploid (2n = 22) and a tetraploid (2n = 44) cytotype. Polysomic ... [more ▼]

In the northeastern part of Belgium, the Centaurea jacea complex shows extensive morphological variation and is represented by a diploid (2n = 22) and a tetraploid (2n = 44) cytotype. Polysomic inheritance of allozyme markers in the tetraploids, suggesting autopolyploidy, is here demonstrated for the first time. In order to test whether the tno cytotypes occupy distinct habitats and possess different gene pools, patterns of allozymic and morphological variation were investigated in relation to ploidy level and site characteristics in 26 populations from the Belgian Ardennes. The two cytotypes showed a parapatric distribution, the diploids occurring at higher elevations (mostly above 500 m) than the tetraploids (mostly below 500 m). Three mixed populations were found near the contact zone of the two cytotypes. Within the mixed populations no triploid plant and no evidence for gene flow between cytotypes were found, despite widely overlapping flowering periods. The two cytotypes can be distinguished on the basis of morphological traits and enzymatic gene pools. The congruence of morphological and allozymic variation with chromosome numbers suggests a secondary contact between the two cytotypes with limited gene flow between them. The origin and persistence of the parapatric distribution are discussed. [less ▲]

Detailed reference viewed: 21 (0 ULg)
Peer Reviewed
See detailIndicateurs de volume et de déplacement d'une structure isostatique : cas de la travée horizontale chargée verticalement
Samyn, Philippe; Latteur, Pierre ULg

in Bulletin n°7/12/2000 de la Classe des sciences de l'Académie royale de Belgique (2000)

Detailed reference viewed: 38 (2 ULg)
Peer Reviewed
See detailLa rédaction cartographique des spatiocartes
Donnay, Jean-Paul ULg; Cornélis, Bernard

in Bulletin de la Société Géographique de Liège (2000), 38

Detailed reference viewed: 17 (1 ULg)
Full Text
See detailComment apprendre aux élèves à développer une démarche experte et réflexive de résolution de problèmes
Fagnant, Annick ULg; Demonty, Isabelle ULg; Lejong, Michèle ULg

in Cahiers du Service de Pédagogie Expérimentale (SPE) (2000), (3-4), 51-65

Detailed reference viewed: 135 (3 ULg)
Full Text
Peer Reviewed
See detailPhylogenetic analysis of the pearlfish Carapini (Ophidiiformes, Carapidae)
Parmentier, Eric ULg; Castillo Cabello, Gabriel ULg; Chardon, Michel ULg et al

in Acta Zoologica (2000), 81

Fishes of the tribe Carapini (Encheliophis and Carapus) share a noteworthy peculiarity: they shelter in holothurian echinoderms or bivalve hosts. Some species are considered parasitic, others commensal ... [more ▼]

Fishes of the tribe Carapini (Encheliophis and Carapus) share a noteworthy peculiarity: they shelter in holothurian echinoderms or bivalve hosts. Some species are considered parasitic, others commensal. This study focuses on the phylogeny of the tribe, using two other Carapidae species as an outgroup (Snyderidia canina and Onuxodon fowleri). Insofar as possible, the selected anatomical and behavioural characters where chosen in an ecomorphological perspective, as features that could be responses to various lifestyle-related constraints. Our character selection also took into account the fact that some features are (presumably) linked. Such features were grouped together as a single trait to avoid their overvaluation. This methodology enabled us to separate commensals from parasites, the former belonging to Carapus and the latter to Encheliophis. Carapus species reflect in their morphology the constraints imposed by a diet of hard, mobile, elusive prey, showing predator-type features: a strong dentition, a wide mouth opening, a robust food intake apparatus. On the other hand, the endoparasitic Encheliophis species show a generally weaker buccal apparatus and narrow mouth opening, in relation to the different constraints of their lifestyle where the diet constraints are less pronounced: they eat body parts of their host. We propose changes in both generic diagnoses and transfer three species from Encheliophis to Carapus. [less ▲]

Detailed reference viewed: 95 (7 ULg)
Full Text
Peer Reviewed
See detailHigh Resolution Electron Energy Loss Spectroscopy Investigation of the Vibrational Structure and Order of an Octadecanethiol Monolayer on Gold Substrates
Duwez, Anne-Sophie ULg; Yu, Li-Ming; Riga, Joseph et al

in Journal of Physical Chemistry B (2000), 104

The vibrational spectra induced by electron beam from octadecanethiol monolayers adsorbed on gold are reported as a contribution to study in detail the structure of the layers, through an analysis of the ... [more ▼]

The vibrational spectra induced by electron beam from octadecanethiol monolayers adsorbed on gold are reported as a contribution to study in detail the structure of the layers, through an analysis of the interaction mechanisms between the electrons and these organic ultrathin films. To show the different spatial distribution of scattered electrons from dipole and impact interactions with the monolayer, angular distributions of elastic and inelastic scattered electrons were measured for various primary energies. The absolute electron scattering loss probabilities from both dipole and impact interactions were estimated for different vibrational modes. The study of these different mechanisms was first hampered by the poor order of the layers adsorbed on evaporated gold. It became therefore highly desirable to perform the experiments on a single-crystal substrate. Using Au(111) and Au(100) single crystals as substrates, it was possible to separate the spectral response from impact and dipole interacting electrons. A negative ion resonant behavior has been observed in the energy dependence of the electron scattering differential cross sections [less ▲]

Detailed reference viewed: 13 (0 ULg)
Peer Reviewed
See detailFormation des enseignants et évaluation : L'évolution depuis 1995
Beckers, Jacqueline ULg

in TNTEE (Thematic Network for Teacher Education in Europe) (2000)

Detailed reference viewed: 22 (2 ULg)
Full Text
Peer Reviewed
See detailSpecific phosphorylation of Torpedo 43 rapsyn by endogenous kinase(s) with thiamine triphosphate as the phosphate donor
Nghiêm, Hoang O; Bettendorff, Lucien ULg; Changeux, Jean-Pierre

in FASEB Journal (2000), 14

Detailed reference viewed: 7 (3 ULg)
Full Text
Peer Reviewed
See detailHipóteses estatísticas : revendo idéias sobre ortogonalidade e balanceamento em análise de varîancia
Iemma, Antonio Francisco; Claustriaux, Jean-Jacques ULg; Palm, Rodolphe ULg

in Multiciência (2000), 4(1), 62-82

Detailed reference viewed: 15 (0 ULg)
Peer Reviewed
See detailRecommandations a propos du traitement de l'hypertension arterielle chez le patient diabetique.
Scheen, André ULg; Rorive, Marcelle ULg; Estrella, F. et al

in Revue Médicale de Liège (2000), 55(5), 376-82

Diabetes mellitus is frequently associated with arterial hypertension and the combination of the two entities markedly increases the cardiovascular risk and accelerates the progression of microangiopathy ... [more ▼]

Diabetes mellitus is frequently associated with arterial hypertension and the combination of the two entities markedly increases the cardiovascular risk and accelerates the progression of microangiopathy (more particularly nephropathy) in both type 1 and type 2 diabetic patients. Numerous international guidelines have been published during the last few years to help the practitioner in targeting ideal arterial blood pressure levels (lower in diabetic than in non-diabetic patients) and in selecting first-choice antihypertensive agents. We will concisely summarize the main messages of these recommendations and insist upon the persistence of uncertainties, or even the existence of inconsistencies, more particularly regarding preferential indications of antihypertensive agents in diabetic patients. [less ▲]

Detailed reference viewed: 67 (1 ULg)
Full Text
Peer Reviewed
See detailRe-entrant Peierls distortion in IV-VI compounds
Raty, Jean-Yves ULg; Gaspard, Jean-Pierre ULg; Bichara, C. et al

in Physica B: Condensed Matter (2000), 276-278

At room temperature, the local structure of crystalline group V elements (As, Sb,middotmiddotmiddot) and their IV-VI isoelectronic compounds (GeSe,middotmiddotmiddot) is governed by a Peierls distortion ... [more ▼]

At room temperature, the local structure of crystalline group V elements (As, Sb,middotmiddotmiddot) and their IV-VI isoelectronic compounds (GeSe,middotmiddotmiddot) is governed by a Peierls distortion of the simple cubic or NaCl structure which is a symmetry breaking electronic instability. The morphology of the distortion is determined by the filling ratio of the p-band; for a half-filled p-band, the sixfold coordination becomes 3 (short, covalent) +3 (long, van der Waals). In general, at high temperature, the structure recovers its higher coordination number. Neutron diffraction experiments have been made in the liquid state at lambda=0.7 Aring. It is observed that the Peierls distortion is still present in the liquid for most IV-VI compounds. This behavior is observed and discussed for a series of Sn and Ge chalcogenides: SnS, SnSe, GeS, GeSe and GeTe and their temperature evolution is discussed. GeSe and GeTe show an interesting re-entrant phase behavior. The heaviest IV-VI compound SnTe does not show a distorted state. We demonstrate that the hardness of the repulsive potential is a key parameter in this mechanism [less ▲]

Detailed reference viewed: 38 (0 ULg)
Full Text
Peer Reviewed
See detailThe bushlike radiation of muroid rodents is exemplified by the molecular phylogeny of the LCAT nuclear gene.
Michaux, Johan ULg; Catzeflis, F.

in Molecular Phylogenetics & Evolution (2000), 17(2), 280-93

Phylogenetic relationships among 40 extant species of rodents, with an emphasis on the taxonomic sampling of Muridae and Dipodidae, were studied using sequences of the nuclear protein-coding gene LCAT ... [more ▼]

Phylogenetic relationships among 40 extant species of rodents, with an emphasis on the taxonomic sampling of Muridae and Dipodidae, were studied using sequences of the nuclear protein-coding gene LCAT (lecithin cholesterol acyl transferase). Analysis of 804 bp from the exonic regions of LCAT confirmed many traditional groupings in and around Muridae. A strong support was found for the families Muridae (represented by 29 species) and Dipodidae (5 species). Compared with Sciuridae, Gliridae, and Caviomorpha, the Dipodidae family appeared the closest relative of Muridae, confirming the suprafamilial Myodonta concept. Within the speciose family Muridae, the first branching leads to the fossorial Spalacinae and semifossorial Rhyzomyinae. The remaining components of Muridae appear as a polytomy from which are issued Sigmodontinae, Calomyscinae, Arvicolinae, Cricetinae, Mystromyinae, Nesomyinae, and some Dendromurinae (Steatomys and Dendromus). This phylogeny is interpreted as the result of a bushlike radiation at the end of the early Miocene, leading to emergence of most living subfamilies. The separation between three additional taxa, Murinae, Gerbillinae, and "Acomyinae" (which comprises the genera Acomys, Deomys, Uranomys, and Lophuromys), has occurred more recently from a common ancestor issued from the main basal radiation. As previously shown by other molecular studies, the vlei rats, Otomyinae, are nested within Old World Murinae. In the same way, the zokors, Myospalacinae, appear strongly nested within the hamsters, Cricetinae. Finally, we propose a sister group relationship between Malagasy Nesomyinae and south African Mystromyinae. [less ▲]

Detailed reference viewed: 36 (0 ULg)
Full Text
Peer Reviewed
See detailFactors controlling the distribution of diatoms and Phaeocystis in the Ross Sea
Goffart, Anne ULg; Catalano, Guilio; Hecq, Jean-Henri ULg

in Journal of Marine Systems (2000), 27

The spatial and temporal distributions of phytoplankton pigments were investigated in the western and south central Ross Sea during austral spring 1994 and summer 1990. Large gradients in biomass and ... [more ▼]

The spatial and temporal distributions of phytoplankton pigments were investigated in the western and south central Ross Sea during austral spring 1994 and summer 1990. Large gradients in biomass and phytoplankton community composition were observed both in the east-west and south-north directions, in relation to differences in water column structure and stability, which themselves depend on the processes of ice retreat within the different areas. Important are melting in the western Ross Sea, which induces strong stratification, and ice breakup and wind stress in the south central Ross Sea, which result in deep mixing and weakly stratified waters. In the western Ross Sea, the highest chl a concentrations observed in this study (129 - 358 mg m-2 in the upper 100 m) were tightly coupled to the stratified region of meltwater influence and were dominated by diatoms, as indicated by elevated fucoxanthin concentrations (89 - 239 mg m-2 in the upper 100 m). In the diatom bloom area, high levels of phaeophorbides a (maximum value of 192 mg . m-2 in the upper 100 m) indicated that the dominant grazers, identified as Limacina helecina and copepods (Hecq et al., 1992), transferred a sustained part of the diatom production to the herbivore trophic level. Synthesis of our data with published information suggests that the diatom bloom we observed in the western Ross Sea was dominated by the species Fragilariopsis curta, and occurs annually off the coast of Victoria Land from 72°30'S to 77°S within 100 to 250 km from the coastal ice edge. It is assumed to persist on the order of 2.5 - 3 months during summer. In the south central Ross Sea, which was characterized by a poorly or unstratified water column, moderate chl a concentrations (55 - 186 mg m-2 in the upper 100 m) were found in the polynya and in the ice edge area in early spring. 19'-hexanoyloxyfucoxanthin, a biomarker for Phaeocystis, was the major contributor to the total carotenoid abundance (29 - 132 mg m-2 in the upper 100 m), corroborating the hypothesis that Phaeocystis are well adapted to develop in a relatively mixed water column. At the northern limit of the polynya, a quite narrow (c. a. 30 km) diatom bloom (31 - 67 mg fucoxanthin m-2 in the upper 100 m) overlapped with the Phaeocystis bloom in the slightly stratified marginal ice zone. This was an area of increased grazing pressure by various types of herbivorous zooplankton, among which very large amounts of krill were observed. [less ▲]

Detailed reference viewed: 90 (15 ULg)
Peer Reviewed
See detailRespiration As The Main Determinant Of Carbon Balance In European Forests
Valentini, R.; Matteucci, G.; Dolman, Aj. et al

in Nature (2000), 404(6780),

Detailed reference viewed: 50 (4 ULg)
Full Text
Peer Reviewed
See detailTreating families of individuals with traumatic brain injury : Presentation of clinical cases approached from a structural therapy perspective
Laroi, Frank ULg

in Journal of Family Psychotherapy (2000), 11

A traumatic brain injury may have a great impact on the family as a whole and may include changes in the family's organizational structure, communication patterns, or balance of family needs. In spite of ... [more ▼]

A traumatic brain injury may have a great impact on the family as a whole and may include changes in the family's organizational structure, communication patterns, or balance of family needs. In spite of this, treatment strategies for these problems are only slowly being recognized, resulting in either family reactions being inadequately addressed in rehabilitative programs, or treatment being approached from a family support perspective and not from a family therapy perspective. The aim of the following paper is to illustrate how family therapeutical approaches can be used in treating families of individuals with brain injury, in particular, structural interventions. Clinical examples will be presented where structural interventions were utilized with brain injury patients and their families. Other inverventional approaches from family therapy will also be mentioned. [less ▲]

Detailed reference viewed: 39 (2 ULg)
Peer Reviewed
See detailAspects physiologiques de la sécrétion laitière par la mamelle bovine
Dosogne, H; Arendt, J; Gabriel, Annick ULg et al

in Annales de Médecine Vétérinaire (2000), 144

Detailed reference viewed: 16 (0 ULg)
Full Text
Peer Reviewed
See detailSegmentation of multispectral images in optical metallography
Pirard, Eric ULg; Bertholet, Vincent

in Revue de Métallurgie - Sciences et Génie des Matériaux (2000), Fév. 2000

Detailed reference viewed: 42 (2 ULg)
Full Text
Peer Reviewed
See detailBase Plate in Bending and Anchor Bolts in Tension
Wald, Frantisek; Jaspart, Jean-Pierre ULg; sokol, Z et al

in Journal of Constructional Steel Research (2000)

The paper describes behaviour of the base plate in bending and the anchor bolts in tension, which is the major component of the base plate connection. The analytical model predicts the component ... [more ▼]

The paper describes behaviour of the base plate in bending and the anchor bolts in tension, which is the major component of the base plate connection. The analytical model predicts the component characteristics — the resistance and the stiffness. It is described how the quality of the behaviour is guided by the contact between the base plate and the concrete surface. The presented analytical prediction model is verified on tests and FE simulation. [less ▲]

Detailed reference viewed: 26 (0 ULg)
Full Text
Peer Reviewed
See detailConstruire l'esprit du dauphin
Servais, Véronique ULg

in Terrain (2000), 34

Comparisons are made of how the dolphin’s “mind” is “constructed” in six interactional contexts distinguished by the degree of participation (in the ethnological sense of the term) by human beings or even ... [more ▼]

Comparisons are made of how the dolphin’s “mind” is “constructed” in six interactional contexts distinguished by the degree of participation (in the ethnological sense of the term) by human beings or even by the dolphins themselves: the study of the brain, the study of sensorial capabilities, research on cognition, naturalistic observations, communication among dolphins, and meetings on the high sea. On the basis of these comparisons, it is argued that whether or not people attribute a “mind” to the dolphin very much depends on the degree of likeness that they recognize with these animals, which, in turn, depends on the person’s capacity to let himself be “affected” by them. [less ▲]

Detailed reference viewed: 123 (5 ULg)