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[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) Comparison of rectal and infrared ear temperatures in older hospital inpatients.Smitz, Simon ; Giagoultsis, T; Dewé, Walthère et alin Journal of the American Geriatrics Society (2000), 48(1), 63-6OBJECTIVES: 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) Ipsilateral motor responses to focal transcranial magnetic stimulation in normal and stroke patients.ALAGONA G.; DELVAUX, Valérie ; GERARD, Pascale et alin Journal of Neurology, Neurosurgery & Psychiatry (2000), Neurosurgery and PsychiatryDetailed reference viewed: 31 (2 ULg) 5-HT2A receptor polymorphism gene in Bipolar Patients and Harm Avoidance personality traitBlairy, Sylvie ; Massat, I; Staner, L et alin American Journal of Medical Genetics Part B-Neuropsychiatric Genetics (2000), 96(3), 360-364Detailed reference viewed: 13 (1 ULg) Artifact-tolerant controllers for automatic drug delivery in anesthesiaFrei, Christian W; Bullinger, Eric ; Gentilini, Andrea et alin Critical Reviews in Biomedical Engineering (2000), 28(1-2), 187-192This 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) Nekrotoxikus Escherichia coli (NTEC) törzsek magyarorszagi elöfordulasa és jellemzéseNagy, B.; Toth, I.; Mainil, Jacques et alin Magyar Allatorvosok Lapja = Hungarian Veterinary Journal (2000), 122Detailed reference viewed: 26 (2 ULg) De Don Quichotte à Michel Siffre : explorations du temps psychologiqueRichelle, Marc in Bulletin de la Classe des Lettres (2000), 6e série, tome XI(7-12), 467-490Detailed reference viewed: 18 (0 ULg) Lexique des termes de physiologie et de pathologie et performances de reproduction chez les bovinsBadinand, F.; Bedouet, J.; Cosson, J. L. et alin Annales de Médecine Vétérinaire (2000), 144Detailed reference viewed: 384 (11 ULg) Using the classification model of an electronic nose to assign unknown malodours to environmental sources and to monitor them continuouslyNicolas, Jacques ; Romain, Anne-Claude ; Wiertz, Véronique et alin Sensors and actuators. B, Chemical (2000), 69(3), 366-371The paper provides some considerations resulting from measurements with electronic noses around real sources of malodour in the environment: compost facilities, printing houses, paint shops, waste water ... [more ▼]The paper provides some considerations resulting from measurements with electronic noses around real sources of malodour in the environment: compost facilities, printing houses, paint shops, waste water treatment plants, rendering plants, settling ponds of sugar factories. The study aims at supplying the concrete information requested by the final user in the field: either a warning signal when the malodour level exceeds some given threshold value, the identification of the source of an odour detected on site, or on-line identification and monitoring of an odour in the field. Very simple instruments are used, either in the laboratory or directly in the field, with a home-made portable e-nose, based on tin oxide sensors. Even with such simple operating conditions, the classification results with DA and PCA are fairly good. The classification functions calibrated with the statistical procedure, on the basis of the learning phase, are used to recognise and to monitor a given malodour. This odour is sometimes mixed with other odorous interferences in the field. The observations reveal some features useful in the frame of the development of a field detector. [less ▲]Detailed reference viewed: 63 (2 ULg) Comparative 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 BeninGoudegnon, Ae.; Kirk, Aa.; Schiffers, Bruno et alin Journal of Applied Entomology-Zeitschrift Fur Angewandte Entomologie (2000), 124(3-4), 141-144Detailed reference viewed: 17 (0 ULg) Influence du 'sense of coherence' dans l'adaptation aux conséquences aversives du traumatismeFrançois, G.; Brouette, Béatrice ; Etienne, Anne-Marie et alin Revue Francophone de Clinique Comportementale et Cognitive (2000), V(1), 20-27Detailed reference viewed: 31 (0 ULg) Electrical conduction by interface states in semiconductor heterojunctionsEl Yacoubi, Mohamed; Evrard, Roger ; Nguyen, Ngoc Duy et alin Semiconductor Science & Technology (2000), 15Electrical conduction in semiconductor heterojunctions containing defect states in the interface region is studied. As the classical drift-diffusion mechanism cannot in any case explain electrical ... [more ▼]Electrical conduction in semiconductor heterojunctions containing defect states in the interface region is studied. As the classical drift-diffusion mechanism cannot in any case explain electrical conduction in semiconductor heterojunctions, tunnelling involving interface states is often considered as a possible conduction path. A theoretical treatment is made where defect states in the interface region with a continuous energy distribution are included. Electrical conduction through this defect band then allows the transit of electrons from the conduction band of one semiconductor to the valence band of the second component. The analysis is initiated by electrical measurements on n-CdS/p-CdTe heterojunctions obtained by chemical vapour deposition of CdS on (111) oriented CdTe single crystals, for which current--voltage and capacitance--frequency results are shown. The theoretical analysis is based on the numerical resolution of Poisson's equation and the continuity equations of electrons, holes and defect states, where a current component corresponding to the defect band conduction is explicitly included. Comparison with the experimental curves shows that this formalism yields an efficient tool to model the conduction process through the interface region. It also allows us to determine critical values of the physical parameters when a particular step in the conduction mechanism becomes dominant. [less ▲]Detailed reference viewed: 58 (7 ULg) Synthesis and evaluation of new RuCl2(p-cymene)(ER2R') and (eta(1):eta(6)-phosphinoarene)RuCl2 complexes as ring-opening metathesis polymerization catalystsJan, Dominique; Delaude, Lionel ; Simal, François et alin Journal of Organometallic Chemistry (2000), 606(1), 55-64New 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: 32 (0 ULg) Background for studies on the treatment of male osteoporosis: state of the art.Kaufman, J M; Johnell, O; Abadie, Eric et alin Annals of the Rheumatic Diseases (2000), 59(10), 765-72Male 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) Epithelial and endothelial expression of the green fluorescent protein reporter gene under the control of bovine prion protein (PrP) gene regulatory sequences in transgenic mice.Lemaire-Vieille, C.; Schulze, T.; Podevin-Dimster, V. et alin Proceedings of the National Academy of Sciences of the United States of America (2000), 97(10), 5422-7The expression of the cellular form of the prion protein (PrP(c)) gene is required for prion replication and neuroinvasion in transmissible spongiform encephalopathies. The identification of the cell ... [more ▼]The expression of the cellular form of the prion protein (PrP(c)) gene is required for prion replication and neuroinvasion in transmissible spongiform encephalopathies. The identification of the cell types expressing PrP(c) is necessary to understanding how the agent replicates and spreads from peripheral sites to the central nervous system. To determine the nature of the cell types expressing PrP(c), a green fluorescent protein reporter gene was expressed in transgenic mice under the control of 6.9 kb of the bovine PrP gene regulatory sequences. It was shown that the bovine PrP gene is expressed as two populations of mRNA differing by alternative splicing of one 115-bp 5' untranslated exon in 17 different bovine tissues. The analysis of transgenic mice showed reporter gene expression in some cells that have been identified as expressing PrP, such as cerebellar Purkinje cells, lymphocytes, and keratinocytes. In addition, expression of green fluorescent protein was observed in the plexus of the enteric nervous system and in a restricted subset of cells not yet clearly identified as expressing PrP: the epithelial cells of the thymic medullary and the endothelial cells of both the mucosal capillaries of the intestine and the renal capillaries. These data provide valuable information on the distribution of PrP(c) at the cellular level and argue for roles of the epithelial and endothelial cells in the spread of infection from the periphery to the brain. Moreover, the transgenic mice described in this paper provide a model that will allow for the study of the transcriptional activity of the PrP gene promoter in response to scrapie infection. [less ▲]Detailed reference viewed: 9 (1 ULg) Assessment of postoperative nausea using a visual analogue scale.Boogaerts, J G; Vanacker, E; Seidel, Laurence et alin Acta Anaesthesiologica Scandinavica (2000), 44(4), 470-4BACKGROUND: Assessment of postoperative nausea intensity is difficult because nausea is a subjective and unpleasant sensation. We propose using the Visual Analogue Scale (VAS) device to increase the ... [more ▼]BACKGROUND: Assessment of postoperative nausea intensity is difficult because nausea is a subjective and unpleasant sensation. We propose using the Visual Analogue Scale (VAS) device to increase the efficiency and precision in the assessment of nausea. We carried out a pilot study on postoperative patients suffering from nausea to measure the degree of agreement between the VAS scores and those given on a 4-point verbal descriptive scale (VDS). METHODS: Postoperative nausea was evaluated by means of a classical VAS (0-10 cm) device and a 4-point VDS (0=no nausea, 1=mild, 2=moderate, 3=severe) in 128 surgical spontaneously complaining patients. Evaluation was repeated 45 min after rescue medication given if nausea was intractable, lasted more than 10 min or at the request of the patient. Ordinal logistic regression was used to measure the association between VAS and VDS and to determine cut-off points on the VAS. RESULTS: The VAS device was easily understood and used by patients. VAS scores decreased significantly from 5.5+/-2.3 to 1.4+/-1.8 after rescue medication (P=0.002). Application of ordinal logistic regression to pre- and post-medication data combined yielded an agreement of 86% between VAS and VDS and the cut-off points on the VAS were estimated as follows: 0-1 (no nausea), 1+/-4 (mild), 4+/-7 (moderate) and 7+/-10 (severe). CONCLUSION: The VAS method proved to be useful for assessing quantitative nausea intensity and for testing the efficacy of rescue medication. It was found that a cut-off value of 4 on the VAS may be considered as a critical threshold triggering anaesthesiologists or nurses to administer rescue medication. [less ▲]Detailed reference viewed: 42 (1 ULg) What 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 in Diabètes & Métabolism (2000), 26(4), 288-93The 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: 43 (0 ULg) Affections cardiaques et intolérances à l'effort. 1-Les troubles du rythme.Amory, Hélène ; Art, Tatiana in Pratique Vétérinaire Equine (2000), 32(Numéro Spécial), 71-78Detailed reference viewed: 58 (11 ULg) Dependency of Premature Ventricular Contractions on Heart Rate and Circadian Rhythms During ChildhoodMassin, M. M.; Maeyns, K.; Withofs, Nadia et alin Cardiology (2000), 93(1-2), 70-3The 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) Expression of receptors for insulin-like growth factor-I and transforming growth factor-beta in human follicles.Qu, Jian Ping; GODIN, Pierre-Arnaud ; NISOLLE, Michelle et alin Molecular Human Reproduction (2000), 6(2), 137-45The in-vitro growth of immature oocytes in early follicles from cryopreserved human ovarian tissues is a new concept in in-vitro fertilization programmes for the treatment of infertile and cancer patients ... [more ▼]The in-vitro growth of immature oocytes in early follicles from cryopreserved human ovarian tissues is a new concept in in-vitro fertilization programmes for the treatment of infertile and cancer patients. To better understand the regulatory mechanism of follicular development, immunohistochemistry was used to study the expression of insulin-like growth factor (IGF) type I receptor (IGF-IR) and transforming growth factor-β (TGFβ) type I (TβR-I) and type II (TβR-II) receptors in fresh and frozen ovarian tissues from 14 women. Immunoreactivities for IGF-IR and TβR-I were present simultaneously in the oocytes of primordial, pre-antral and antral follicles. Staining for both IGF-IR and TβR-I was also observed in granulosa cells of primordial, pre-antral and antral follicles. IGF-IR and TβR-I also stained in thecal cells of pre-antral and antral follicles. Stromal cells in surrounding ovarian tissue expressed IGF-IR and TβR-I at various follicular stages. Unlike TβR-I, TβR-II was expressed only in the oocytes of primordial and primary follicles, and with weak staining intensity in thecal cells. No significant staining for TβR-II was found in oocytes and granulosa cells of antral follicles. There was no difference in staining patterns for IGF-IR, TβR-I and TβR-II between fresh and frozen ovarian tissues, indicating that cryopreservation might not significantly alter the immunoreactivities of these receptors in frozen ovarian tissue. The results suggest that IGF-I and TGFβ may participate in the regulation of follicular growth by binding to their receptors through an autocrine or paracrine mechanism. IGF-I and TGFβ may be useful in regulating the in-vitro or in-vivo maturation of oocytes not only in later follicles but also very early follicles, from cryopreserved ovarian tissues for clinical use in the future. [less ▲]Detailed reference viewed: 9 (0 ULg) Les relations ethniques aux USA au début du XXIème siècleMartiniello, Marco in Actualité du Droit (2000), 3Detailed reference viewed: 19 (0 ULg) Clinical impact and perspectives of 18F-FDG PET in lymphomaJerusalem, Guy ; Beguin, Yves in Clinical Lymphoma (2000), 1Detailed reference viewed: 10 (6 ULg) In vitro short-term study of ammonia-nitrogen production from cattle urine : influence of ampicillin, hydroquinone and animal litter materialsNimenya, Herman ; Delaunois, Annie ; Bloden, Serge et alin Journal of Agricultural Science (2000), 135Detailed reference viewed: 58 (21 ULg) Systematic study and stratigraphic correlation of the Grandispora complex in the Famennian of Northwest and Eastern EuropeHiggs, K.T.; Avkhimovitch, V.I.; Loboziak, S. et alin Review of Palaeobotany and Palynology (2000), 112Detailed reference viewed: 24 (2 ULg) Specific phosphorylation of Torpedo 43 rapsyn by endogenous kinase(s) with thiamine triphosphate as the phosphate donorNghiêm, Hoang O; Bettendorff, Lucien ; Changeux, Jean-Pierrein FASEB Journal (2000), 14Detailed reference viewed: 7 (3 ULg) Measurements of hindlimb blood flow recorded using Doppler ultrasound during administration of vasoactive agents in halothane-anesthetized horsesRaisis, Anthea L; Young, Lesley E; Meire, Hylton B et alin Veterinary Radiology & Ultrasound : The Official Journal of the American College of Veterinary Radiology & the International Veterinary Radiology Association (2000), 41(1), 64-72The 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) Band-by-band decompositions of the Born effective chargesGhosez, Philippe ; Gonze, X.in Journal of Physics : Condensed Matter (2000), 12(43), 9179-9188The Born effective charge, Z*, that describes the polarization created by collective atomic displacements, can be computed from first principles following different techniques. We establish the ... [more ▼]The Born effective charge, Z*, that describes the polarization created by collective atomic displacements, can be computed from first principles following different techniques. We establish the connections existing between these different formulations, and analyse the related band-by-band decompositions. We show that unlike for the full Z*, the different band-by-band values are not equal, and emphasize that one of them has a natural physical meaning in terms of Wannier functions. [less ▲]Detailed reference viewed: 29 (0 ULg) Aerosol therapy in veterinary medicine : is it the future ?Lekeux, Pierre in Veterinary Journal (2000), 160Detailed reference viewed: 5 (0 ULg) L'herpèsvirus bovin de type 4 : virus pathogène ou passager?Thiry, Etienne ; Markine-Goriaynoff, Nicolas; Minner, Frédéric et alin Point Vétérinaire (2000), 31Bovine 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: 60 (4 ULg) Obs. sous Cass., 8 avril 1999Delnoy, Michel in Aménagement - Environnement (2000), 2Detailed reference viewed: 11 (0 ULg) Protective Effects Of A Live Attenuated Bovine Leukaemia Virus Vaccine With Deletion In The R3 And G4 GenesReichert, M.; Cantor, Gh.; Willems, Luc et alin Journal of General Virology (2000), 81Detailed reference viewed: 10 (1 ULg) Variability of Doppler ultrasound measurements of hindlimb blood flow in conscious horsesRaisis, Anthea L; Young, L. E.; Meire, H. B. et alin Equine Veterinary Journal (2000), 32(2), 125-132Ultrasonography of the left and right femoral artery and vein was performed in 5 conscious horses. Velocity waveforms, recorded using low pulse repetition frequency, were used to calculate time-averaged ... [more ▼]Ultrasonography of the left and right femoral artery and vein was performed in 5 conscious horses. Velocity waveforms, recorded using low pulse repetition frequency, were used to calculate time-averaged mean velocity (TAV), velocity of component a (TaVa), velocity of component b (TaVb) and volumetric flow. Waveform analysis included calculation of early diastolic deceleration slope (EDDS) and pulsatility index (PI) and subjective description of the waveform. Measurements were recorded at monthly intervals for 6 months. The repeated measurements were used to determine the within-horse variation. Horses were then anaesthetised with halothane and the same measurements recorded 60 min after induction. Differences between measurements recorded in conscious and anaesthetised horses were determined. Within-horse variability for diameters of femoral arteries and veins was small (CV<10%). Within variability for all other measurements was marked (CV>11%), with within-horse variability being the largest for femoral venous flow (CV>35%). Source of variability was measurement error and biological variation. Despite variability in conscious horses it was possible to detect changes in blood flow during anaesthesia. In the femoral arteries, volumetric flow was lower and EDDS and PI was higher in anaesthetised horses. In the femoral veins, volumetric flow was also lower in anaesthetised horses. Therefore Doppler ultrasound appears to be a useful technique for studying blood flow in conscious and anaesthetised horses [less ▲]Detailed reference viewed: 10 (0 ULg) Les acteurs d'un système de justice pénale européenFlore, Daniel in L’espace judiciaire pénal européen après Tampere (2000)Detailed reference viewed: 39 (4 ULg) Le maillage vert... ou les réseaux de toute nature...Mougenot, Catherine ; Melin, Eric in Cahiers de l'Urbanisme (Les) (2000), (28-29), 42-45Depuis 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: 113 (22 ULg) Evidence of nutriceutical effectiveness in the treatment of osteoarthritisReginster, Jean-Yves ; Gillot, Vincent; Bruyère, Olivier et alin Current Rheumatology Reports (2000), 2(6), 472-477Detailed reference viewed: 12 (4 ULg) Les artisans-producteurs face aux problèmes de conservation.Sindic, Marianne ; Rolland, Sandrinein Dieta (2000), (20), 6-7Detailed reference viewed: 16 (1 ULg) A Topological Reconstruction Theorem for $D^{\infty}$-ModulesProsmans, Fabienne ; Schneiders, Jean-Pierre in Duke Mathematical Journal (2000), 102(1), 39-86We 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) De l'incidence de la remise de dette consentie à l'une des cautions, note sous Bruxelles, 13 octobre 1998Napora, Stéphane in Actualité du Droit (2000)Detailed reference viewed: 32 (5 ULg) Oestrogenotherapie apres la menopause et protection cardio-vasculaire: discordance entre les observations epidemiologiques et les resultats d'essais therapeutiques.Scheen, André in Revue Médicale de Liège (2000), 55(9), 886-8Based upon the positive results of a large epidemiological study and the negative results of an interventional clinical trial recently published in the New England Journal of Medicine, we will briefly ... [more ▼]Based upon the positive results of a large epidemiological study and the negative results of an interventional clinical trial recently published in the New England Journal of Medicine, we will briefly discuss the impact of estrogen replacement therapy on the protection against coronary heart disease in postmenopausal women. [less ▲]Detailed reference viewed: 37 (1 ULg) Les sartans face aux inhibiteurs de l'enzyme de conversion de l'angiotensine en présence d'une hypertension artérielleKrzesinski, Jean-Marie ; Sternon, J.in Revue Médicale de Bruxelles (2000), 21(3), 170-177Detailed reference viewed: 13 (2 ULg) Un outil d’optimisation des structures orthotropes intégré à l’avant-projetRigo, Philippe in Construction Métallique (2000)Detailed reference viewed: 539 (0 ULg) "note sous J.P. Jumet, 24 février 2000"Moreau, Pierre in Actualités du Droit (2000)Detailed reference viewed: 131 (0 ULg) The effect of PIT tags on growth and physiology of age-0 cultured Eurasian perch Perca fluviatilis of variable sizeBaras, E.; Malbrouck, C.; Houbart, M. et alin Aquaculture (2000), 185Detailed reference viewed: 16 (1 ULg) Studies in Bacidia sensu lato (lichenized Ascomycetes: Lecanorales). I. The genus BapalmuiaKalb, Klaus; Lücking, Robert; Sérusiaux, Emmanuël in Mycotaxon (2000), 75Detailed reference viewed: 8 (0 ULg) Treating families of individuals with traumatic brain injury : Presentation of clinical cases approached from a structural therapy perspectiveLaroi, Frank in Journal of Family Psychotherapy (2000), 11A 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: 41 (2 ULg) De la relation spatiale entre les personnages des groupes statuaires royaux en Égypte pharaoniqueLaboury, Dimitri in Revue d'Egyptologie (2000), 51Given 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: 44 (2 ULg) Pédophilie : un synopsis cliniqueKempeneers, Philippe in Sexologies (2000), 9(33), 8-17Conceiving pedophilic sexuality as a sexuality resulting from a fack of grtifying relationships to adults is an important operational reference for the clinician. In this way, the obstacles to sexual ... [more ▼]Conceiving pedophilic sexuality as a sexuality resulting from a fack of grtifying relationships to adults is an important operational reference for the clinician. In this way, the obstacles to sexual satisfaction with adults can become the privileged target of therapeutic and preventive acts.The narcissic fragility is certainly an obstacle common to almost all the pedophilic patterns. Beyond this common denominator, the individual cases are characterized by strong dissimilarities. The variety of the cases justifies the attempts to classify the different types of pedophiles. But the typological systems are also quite different, depending on the theorical and methodological preferences of their authors. Starting from the ideas of several authors, this article try to sum up the variety of pedophilic functioning in four axes of variation. At last, the article stresses the imortance of contexts of life as factors leading a predisposed personality to transgression [less ▲]Detailed reference viewed: 74 (10 ULg) Is the external beam PIXE method suitable for determining ancient silver artifact fineness?Weber, Georges ; Guillaume, J.; Strivay, David et alin Nuclear Instruments & Methods in Physics Research Section B (2000), 161In 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) Core-polarization effects in the Cadmium Isoelectronic SequenceBiémont, Emile ; Froese Fischer, C.; Godefroid, M. R. et alin Physical Review. A (2000), 62Detailed reference viewed: 9 (2 ULg) Adenovirus infections in pigeonsDuchatel, Jean-Pierre ; Marlier, Didier ; Jauniaux, Thierry et alin Annales de Médecine Vétérinaire (2000), 144(1), 13-17This 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) Structure et fonctionnement de la mémoire : une approche neuropsychologiqueMarczewski, Philippe; Van der Linden, Martial ; Collette, Fabienne et alin Confrontations Psychiatriques (2000), 41Memory in not a unified system. It's composed of independant but interacting systems. Cognitive neuropsychology showed dissociations between these systems in patients with various brain lesions. The ... [more ▼]Memory in not a unified system. It's composed of independant but interacting systems. Cognitive neuropsychology showed dissociations between these systems in patients with various brain lesions. The episodic memory system is devoted to the processing of personally lieved events. The predominant role played by frontal regions in underlying episodic memory has been fully documented. Moreover, the episodic memory disfunctions may lead to illusions of memory such as false memories, confabulations or hallucinations. [less ▲]Detailed reference viewed: 45 (6 ULg) Sibling cannibalism in dorada under experimental conditions. II. Effect of initial size heterogeneity, diet and light regime on early cannibalismBaras, E.; Maxi, M. Y.; Ndao, J. et alin Journal of Fish Biology (2000), 57Detailed reference viewed: 15 (3 ULg) Hyperammonemia after high-dose chemotherapy and stem cell transplantation.Frere, Pascale ; Canivet, Jean-Luc ; Gennigens, Christine et alin Bone Marrow Transplantation (2000), 26(3), 343-5We report a patient with multiple myeloma who suffered from hyperammonemia after a second stem cell autograft. This syndrome is not well known but is associated with a high mortality rate. Considering the ... [more ▼]We report a patient with multiple myeloma who suffered from hyperammonemia after a second stem cell autograft. This syndrome is not well known but is associated with a high mortality rate. Considering the possibility of this diagnosis in patients developing confusion and neurological degradation with respiratory alkalosis after intensive chemotherapy, could allow earlier treatment and perhaps improved survival. Possible mechanisms and potential therapies are discussed. With rapid recognition and treatment of the syndrome, the patient fully recovered. One and a half years later, she is still alive and well, on interferon for persisting myeloma. [less ▲]Detailed reference viewed: 90 (2 ULg) The bushlike radiation of muroid rodents is exemplified by the molecular phylogeny of the LCAT nuclear gene.Michaux, Johan ; Catzeflis, F.in Molecular Phylogenetics & Evolution (2000), 17(2), 280-93Phylogenetic 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: 38 (0 ULg) Comparaison de l'usage d'huiles d'origine végétale ou minérale pour la lubrification de chaines de tronconneuse.Bieswal, Marc; Debouche, Charles ; van Belle, Laurentin Silva Belgica (2000), 107(2), 18-21Des 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) D'un procès à l'autre - pour une esthétique des médiasServais, Christine in Recherches en Communication (2000), 13Detailed reference viewed: 63 (15 ULg) Neuropsychologie de l'apprentissage implicte et de la mémoire procéduraleMeulemans, Thierry in Revue de Neuropsychologie (2000), 10(1), 129-157Detailed reference viewed: 68 (11 ULg) Late Frasnian - Famennian climates based on palynomorph analyses and the question of the late Devonian glaciations.Streel, Maurice ; Caputo, MV; Loboziak, S et alin Earth-Science Reviews (2000), 52(1-3), 121-173Detailed reference viewed: 28 (3 ULg) Laser-induced transitions between triply excited hollow statesMadsen, L. B.; Schlagheck, Peter ; Lambropoulos, P.in Physical Review Letters (2000), 85(1), 42-45We present an ab initio calculation of the Li+ photoion yield in the presence of laser coupling between the triply; excited 2s(2)2p(2)P(o) and 2s2p(2) D-2(e) resonances in lithium, the first of which is ... [more ▼]We present an ab initio calculation of the Li+ photoion yield in the presence of laser coupling between the triply; excited 2s(2)2p(2)P(o) and 2s2p(2) D-2(e) resonances in lithium, the first of which is assumed 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. [less ▲]Detailed reference viewed: 4 (1 ULg) Laparoscopic myolysis.Donnez, Jacques; Sqifflet, Jean; Polet, Roland et alin Human Reproduction Update (2000), 6(6), 609-13This review will focus on the different techniques and the long-term effects of the technique called myolysis on myoma growth. Indications for myolysis are essentially pelvic pain, compression symptoms ... [more ▼]This review will focus on the different techniques and the long-term effects of the technique called myolysis on myoma growth. Indications for myolysis are essentially pelvic pain, compression symptoms and global uterine volume in order to avoid hysterectomy. In the late 1980s, myolysis was performed laparoscopically with the help of the neodynium: yttrium aluminium garnet (Nd:YAG) laser. Later, bipolar needles were developed as an alternative to the Nd:YAG laser. Diathermy and cryomyolysis were also proposed but series are small in the literature. Very recently, myoma interstitial thermo-therapy (MITT) was performed using the diode laser and a specific optical light diffuser that is designed to transmit laser light in all directions. Laparoscopic myolysis was proved to be effective in provoking myoma shrinkage, with a dramatic decrease in size and a marked devascularization of the myoma and this technique can be proposed as an alternative to myomectomy in selected patients: only those aged >40 years or those not desiring to bear any more children. [less ▲]Detailed reference viewed: 14 (0 ULg) Fractal characterization of wide pore range catalysts: Application to Pd-Ag/SiO2 xerogelsBlacher, Silvia ; Heinrichs, Benoît ; Sahouli, Bendida et alin Journal of Colloid & Interface Science (2000), 226(1), 123-130Fractal analysis has been applied to characterize the structure of Pd-Ag/SiO2 catalysts dried under vacuum (150 degrees C and 12 hPa) with different concentrations of Pd-Ag, Nitrogen adsorption-desorption ... [more ▼]Fractal analysis has been applied to characterize the structure of Pd-Ag/SiO2 catalysts dried under vacuum (150 degrees C and 12 hPa) with different concentrations of Pd-Ag, Nitrogen adsorption-desorption, mercury porosimetry, and small-angle X-ray scattering measurements have been used. The different approaches to fractal analysis and their conditions of applicability are briefly described. Results are discussed in relation to those derived previously from classical interpretations. This analysis shows that Pd-Ag/SiO2 xerogels exhibit a very open self-similar pore structure analogous to the structure of supercritically dried aerogels and that the micropore texture can be tailored by varying the silver content. (C) 2000 Academic Press. [less ▲]Detailed reference viewed: 51 (13 ULg) A 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 alin Structure (2000), 8(2), 153-62BACKGROUND: 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) Fate of the nucleolar vacuole during resumption of cell cycle in pea cotyledonary budsJennane, A.; Thiry, Marc ; Diouri, M. et alin Protoplasma (2000), 210(3-4), 172-178Meristematic 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) La chondroprotection aujourd’huiReginster, Jean-Yves ; Ethgen, Olivier ; Dang Vu, Tin Rhumatologie (2000), 52(8), 13-16Detailed reference viewed: 16 (2 ULg) Adoptive immunotherapy with donor lymphocyte infusions after allogeneic HPC transplantation.Baron, Frédéric ; Beguin, Yves in Transfusion (2000), 40(4), 468-76Detailed reference viewed: 9 (1 ULg) Influence of ventilatory pattern on respiratory impedance measured by impulse oscillometry in horsesVan Erck, Emmanuelle ; Kirschvink, Nathalie; Art, Tatiana et alin Pflügers Archiv : European Journal of Physiology (2000), 440(R219-R220), Detailed reference viewed: 7 (0 ULg) A numerically efficient data analysis method with error map generationRixen, M.; Beckers, Jean-Marie ; Brankart, J. M. et alin Ocean Modelling (2000), 2The variational inverse model (VIM) for data analysis was already shown to be statistically equivalent to objective analysis (OA) provided the covariance function for the OA and the VIM reproducing kernel ... [more ▼]The variational inverse model (VIM) for data analysis was already shown to be statistically equivalent to objective analysis (OA) provided the covariance function for the OA and the VIM reproducing kernel are identical. The VIM, however does not allow a direct derivation of the error field associated with the analysis. The purpose of the paper is to extend the one to one correspondance between the two analysis shemes by proposing a heuristic statistical error expression for the VIM. The numerical efficiency on analysis and error map generation of both methods is compared on quasi-synoptic and climatological data sets. It is shown that the VIM analysis and error map generation offers interesting numerical skills in both case studies. [less ▲]Detailed reference viewed: 28 (6 ULg) Ferroelectricity in PbTiO3 thin films: A first principles approachRabe, K. M.; Ghosez, Philippe in Journal of Electroceramics (2000), 4(2-3), 379-383The ground-state ferroelectric distortion of PbTiO3 thin films is studied using a first-principles effective Hamiltonian to describe the structural energetics at a microscopic level. Under short-circuit ... [more ▼]The ground-state ferroelectric distortion of PbTiO3 thin films is studied using a first-principles effective Hamiltonian to describe the structural energetics at a microscopic level. Under short-circuit electrical and zero-stress mechanical boundary conditions, (0 0 1) films as thin as one unit cell are found to support a stable perpendicular polarization. Size effects in the layer-by-layer ferroelectric distortion are discussed. The continuum limit of the first-principles effective Hamiltonian has the same form as the widely-used Landau-Ginzburg expression for the free energy near T-c, so that the present results can be directly related to those of previous phenomenological studies. In particular, a microscopic interpretation of the extrapolation length delta is proposed. [less ▲]Detailed reference viewed: 26 (5 ULg) Placental growth hormone and IGF-I in a pregnant woman with Pit-1 deficiencyVerhaeghe, J.; Bougoussa, M.; Van Herck, E. et alin Clinical Endocrinology (2000), 53(5), 645-647The respective contributions of pituitary and placental GH to circulating IGF-I in pregnant women have not been well established. We measured the serum concentrations of placental growth hormone (PGH) and ... [more ▼]The respective contributions of pituitary and placental GH to circulating IGF-I in pregnant women have not been well established. We measured the serum concentrations of placental growth hormone (PGH) and IGF-I in a woman with pit-1 deficiency before, during and after pregnancy, resulting in the birth of a healthy child (not pit-1 deficient). Both PGH and IGF-I concentrations were below the assay detection limit before and after pregnancy. During pregnancy, PGH and IGF-I levels increased steadily; the concentrations of PGH and IGF-I in late pregnancy were comparable with levels previously measured in normal pregnancies. PGH and IGF-I concentrations were strongly correlated throughout pregnancy (r = 0.90; P = 0.002). PGH was undetectable in cord serum, whilst the IGF-I concentration was within the normal range. The findings of this case study corroborate the notion that PGH is the prime regulator of maternal serum IGF-I during pregnancy. [less ▲]Detailed reference viewed: 25 (6 ULg) Auditory steady-state response and bispectral index for assessing level of consciousness during propofol sedation and hypnosis.Bonhomme, Vincent ; Plourde, Gilles; Meuret, Pascal et alin Anesthesia and analgesia (2000), 91(6), 1398-403We 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) Les caractéristiques de l'enseignant expertPiéron, Maurice ; Delfosse, Catherine ; Ledent, Maryse et alin Revue de l'Education Physique (2000), 40(4), 173-180L'étude fait partie du projet de recherche 157/1997 de la Communauté française, projet confié au service de Pédagogie des activités physiques et sportives de l'Université de Liège. D'autres aspects de ... [more ▼]L'étude fait partie du projet de recherche 157/1997 de la Communauté française, projet confié au service de Pédagogie des activités physiques et sportives de l'Université de Liège. D'autres aspects de cette recherche furent présentés dans les numéros 1, 2 et 3 du volume 40 de la Revue de l'Education Physique. [less ▲]Detailed reference viewed: 304 (11 ULg) Neural mechanisms of antinociceptive effects of hypnosis.Faymonville, Marie ; Laureys, Steven ; Degueldre, Christian et alin Anesthesiology (2000), 92(5), 1257-67BACKGROUND: The neural mechanisms underlying the modulation of pain perception by hypnosis remain obscure. In this study, we used positron emission tomography in 11 healthy volunteers to identify the ... [more ▼]BACKGROUND: The neural mechanisms underlying the modulation of pain perception by hypnosis remain obscure. In this study, we used positron emission tomography in 11 healthy volunteers to identify the brain areas in which hypnosis modulates cerebral responses to a noxious stimulus. METHODS: The protocol used a factorial design with two factors: state (hypnotic state, resting state, mental imagery) and stimulation (warm non-noxious vs. hot noxious stimuli applied to right thenar eminence). Two cerebral blood flow scans were obtained with the 15O-water technique during each condition. After each scan, the subject was asked to rate pain sensation and unpleasantness. Statistical parametric mapping was used to determine the main effects of noxious stimulation and hypnotic state as well as state-by-stimulation interactions (i.e., brain areas that would be more or less activated in hypnosis than in control conditions, under noxious stimulation). RESULTS: Hypnosis decreased both pain sensation and the unpleasantness of noxious stimuli. Noxious stimulation caused an increase in regional cerebral blood flow in the thalamic nuclei and anterior cingulate and insular cortices. The hypnotic state induced a significant activation of a right-sided extrastriate area and the anterior cingulate cortex. The interaction analysis showed that the activity in the anterior (mid-)cingulate cortex was related to pain perception and unpleasantness differently in the hypnotic state than in control situations. CONCLUSIONS: Both intensity and unpleasantness of the noxious stimuli are reduced during the hypnotic state. In addition, hypnotic modulation of pain is mediated by the anterior cingulate cortex. [less ▲]Detailed reference viewed: 122 (11 ULg) Profil et épaisseur des mots : Kamau Brathwaite RêvHaïtiPagnoulle, Christine in Palimpsestes (2000), 12The article comments on the specifities of Brathwaite's use of language and typography and on the translator's attempt at retrieving them (the translator being also the author of the article).Detailed reference viewed: 35 (3 ULg) Tectonic vs. shallow origin of geodetically inferred ground movements: an NE Ardenne (Belgium) caseDemoulin, Alain ; Vliegen, Bernard; Charlier, Robert in Earth and Planetary Science Letters (2000), 181(1-2), 217-228In 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) Que pense l’élève de la leçon qu’il vient de vivre ?Piéron, Maurice ; Delfosse, Catherine; Ledent, Maryse et alin Revue de l'Education Physique (2000), 40(3), 119-129S'intéresser aux avis des acteurs de la relation pédagogique sur ce qu'ils vivent en classe représente une démarche particulièrement utile pour mieux apprécier la signification des comportements qu'ils ... [more ▼]S'intéresser aux avis des acteurs de la relation pédagogique sur ce qu'ils vivent en classe représente une démarche particulièrement utile pour mieux apprécier la signification des comportements qu'ils ont adoptés. Il est clair qu'à l'issue d'une leçon d'éducation physique, il est hautement souhaitable que les élèves éprouvent autant de satisfaction que possible. Une estimation globale de satisfaction doit être complétée de perceptions plus spécifiques relatives à l'intensité de la leçon, aux sentiments de compétence en relation avec ce qui fut réalisé, aux corrections reçues, au progrès réalisé, au sentiment de s'être donné à fond, de s'être amusé et d'avoir prêté attention aux interventions de l'enseignant. [less ▲]Detailed reference viewed: 153 (2 ULg) The Legionella (Fluoribacter) gormanii metallo-beta-lactamase: a new member of the highly divergent lineage of molecular-subclass B3 beta-lactamases.Boschi, L.; Mercuri, Paola ; Riccio, M. L. et alin Antimicrobial agents and chemotherapy (2000), 44(6), 1538-43A 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) Structure-activity relationships on adrenoceptors and imidazoline-preferring binding sites (I(1,2)-PBSs). Part 1: Weak intramolecular H-bond and conformational flexibility in a new I1-PBS-selective imidazoline analogue, trans1-(4',5'-dihydro-1'H-imidazol-2'-yl)methyl-2-hydroxyindane (PMS 952).Ye, Hai Fen; Dive, Georges ; Dehareng, Dominique et alin Bioorganic & Medicinal Chemistry (2000), 8(8), 1861-9The highly selective I1-PBS imidazoline analogue PMS 952 has been selected to study the incidence of intramolecular hydrogen bond and molecular flexibility on its biological activity. On one hand, the ... [more ▼]The highly selective I1-PBS imidazoline analogue PMS 952 has been selected to study the incidence of intramolecular hydrogen bond and molecular flexibility on its biological activity. On one hand, the weak energy difference between three calculated conformers does not support the stabilization of one conformer by an internal hydrogen bond. The 3-D electrostatic map confirms this feature and the solvent effect does not significantly modify the relative energy of these conformers. On the other hand, the conformational spaces of the neutral and ionized forms present a great number of equilibrium structures, in a short energetic range (20 Kcal). The results are representative of an exceptional conformational flexibility due to a cooperative effect between several parts of the molecule. [less ▲]Detailed reference viewed: 83 (1 ULg) Pour une démarche de qualité dans la formation continuée des enseignants : rôle de l'évaluationGiot, Bernadette in Point sur la Recherche en Education (Le) (2000), 21Detailed reference viewed: 21 (3 ULg) Conséquences de l'infection des cervidés par des alpha-herpèsvirus apparentés au virus de l'IBRKeuser, V.; Thiry, Etienne in Point Vétérinaire (2000), 31Detailed reference viewed: 14 (0 ULg) Laser-induced transitions between triply excited hollow statesMadsen, L. B.; Schlagheck, Peter ; Lambropoulos, P.in Physical Review. A (2000), 62(6), 062719Using 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) Les surcoûts collectifs de la désurbanisation : quand la mobilité dessine la villeHalleux, Jean-Marie in La Cemathèque (2000), (4), 8-11Detailed reference viewed: 19 (5 ULg) Post-stroke reorganization of hand motor area: a 1 year longitudinal study with focal transcranial magnetic stimulation.DELVAUX, Valérie ; ALAGONA G.; DE PASQUA, Victor et alin Clinical Neurophysiology (2000), 111(Suppl. 1), 12517-06Detailed reference viewed: 38 (5 ULg) Evidence for decoupling of atmospheric CO2 and global climate during the Phanerozoic eonVeizer, J.; Godderis, Y.; François, Louis in Nature (2000), 408(6813), 698-701Atmospheric carbon dioxide concentrations are believed to drive climate changes from glacial to interglacial modes', although geological(1-3) and astronomical(4-6) mechanisms have been invoked as ultimate ... [more ▼]Atmospheric carbon dioxide concentrations are believed to drive climate changes from glacial to interglacial modes', although geological(1-3) and astronomical(4-6) mechanisms have been invoked as ultimate causes. Additionally, it is unclear(7,8) whether the changes between cold and warm modes should be regarded as a global phenomenon, affecting tropical and high-latitude temperatures alike(9-13), or if they are better described as an expansion and contraction of the latitudinal climate zones, keeping equatorial temperatures approximately constant(14-16). Here we present a reconstruction of tropical sea surface temperatures throughout the phanerozoic eon (the past similar to 550 Myr) from our database(17) of oxygen isotopes in calcite and aragonite shells. The data indicate large oscillations of tropical sea surface temperatures in phase with the cold-warm cycles, thus favouring the idea of climate variability as a global phenomenon. But our data conflict with a temperature reconstruction using an energy balance model that is forced by reconstructed atmospheric carbon dioxide concentrations(18). The results can be reconciled if atmospheric carbon dioxide concentrations were not the principal driver of climate variability on geological timescales for at least one-third of the Phanerozoic eon, or if the reconstructed carbon dioxide concentrations are not reliable. [less ▲]Detailed reference viewed: 17 (2 ULg) Comment j'explore ... un cancer broncho-pulmonaire par imagerie metabolique (TEP-18-FDG).Bury, Thierry ; DUYSINX, Bernard ; CORHAY, Jean-Louis et alin Revue Médicale de Liège (2000), 55(3), 178-83Continuing advances in PET imaging have resulted in an improved ability to evaluate thoracic malignancies. Published reports demonstrate that PET provides accurate noninvasive detection of malignancy that ... [more ▼]Continuing advances in PET imaging have resulted in an improved ability to evaluate thoracic malignancies. Published reports demonstrate that PET provides accurate noninvasive detection of malignancy that is useful in the characterization of a pulmonary solitary nodule and in the mediastinal or extrathoracic staging of known lung cancer. Preliminary studies suggest that PET may also be able to assess the therapeutic response after surgery or radiation therapy. [less ▲]Detailed reference viewed: 25 (0 ULg) A random matrix model for color superconductivity at zero chemical potentialVanderheyden, Benoît ; Jackson, A. D.in Physical Review. D : Particles and Fields (2000), 61(7), 076004We discuss random matrix models for the spontaneous breaking of both chiral and color symmetries at zero chemical potential and finite temperature. Exploring different Lorentz and gauge symmetric color ... [more ▼]We discuss random matrix models for the spontaneous breaking of both chiral and color symmetries at zero chemical potential and finite temperature. Exploring different Lorentz and gauge symmetric color structures of the random matrix interactions, we find that spontaneous chiral symmetry breaking is always thermodynamically preferred over diquark condensation. Stable diquark condensates appear only as SU(2) rotated chiral condensates, which do not represent an independent thermodynamic phase. Our analysis is based on general symmetry arguments and hence suggests that no stable and independent diquark phase can form in QCD with two flavors at zero quark chemical potential. [less ▲]Detailed reference viewed: 16 (2 ULg) L'écriture en chantier. Une brochure destinée aux enseignants du secondaireBaye, Ariane ; Denooz, Réginein Cahiers du Service de Pédagogie Expérimentale (SPE) (2000), 7-8Detailed reference viewed: 31 (1 ULg) La pleuropneumonie contagieuse bovineLinden, Annick ; Desmecht, Daniel in Vlaams Diergeneeskundig Tijdschrift (2000), 69Detailed reference viewed: 17 (2 ULg) Actualité choisie du TIG et de la formationDantinne, Michaël ; Van Doosselaere, Denisin Revue de Droit Pénal et de Criminologie (2000), (11), Detailed reference viewed: 34 (2 ULg) Les aspects precliniques des therapeutiques anti-angiogenesNoël, Agnès ; Foidart, Jean-Michel in Bulletin de l'Académie Nationale de Médecine (2000), 184(3), 569-77578Tumor angiogenesis is one of the most important fields of cancer research. It is important to identify the putative targets for antiangiogenic strategies. To date, a number of angiogenic agents have been ... [more ▼]Tumor angiogenesis is one of the most important fields of cancer research. It is important to identify the putative targets for antiangiogenic strategies. To date, a number of angiogenic agents have been identified: bFGF, the different VEGF isoforms, integrins, proteases (matrix metalloproteases and serine proteases),... Furthermore, several physiological anti-angiogenic agents have been isolated such as endostatin, angiostatin, 16 K prolactin,.... The recent development of mice deficient for one gene involved during angiogenesis gives a new insight into the molecular mechanisms regulating this process. It leads to the identification of plasminogen activator inhibitor-1 or PAI-1 as a new target for tumor treatment. Although, PAI-1 is very attractive as a target for new therapeutic strategies, a better understanding of its mechanism of action is needed urgently. [less ▲]Detailed reference viewed: 4 (0 ULg) Conditions radiatives nocturnes hivernales et température de la chaussée : l’exemple de la station météoroutière de Berloz (Belgique)Erpicum, Michel ; Alexandre, Jean ; Etienne, Hugues et alin Publications de l'Association Internationale de Climatologie (2000), 13Detailed reference viewed: 25 (6 ULg) Comparison of the efficacy of 2 vaccination schemes against an experimental infection with a virulent amyxomatous or a virulent nodular Myxoma virus strainMarlier, Didier ; Mainil, Jacques ; Boucraut-Baralon, C. et alin Journal of Comparative Pathology (2000), 122Detailed reference viewed: 17 (1 ULg) Alteration of thyroid hormones, insulin-like growth factor-I (IGF-I) and IGFBPs in finishing calves treated with dexamethasoneBertozzi, Carlo; Massart, Serge; Darras, Veerle et alin Canadian Journal of Animal Science (2000), 80Detailed reference viewed: 25 (2 ULg) A comparison of respiratory pathways in fully habituated and normal non-organogenic sugarbeet callusBisbis, Badia; Wagner, Anneke; Kevers, Claire et alin Journal of Plant Physiology (2000), 156(3), 312-318The respiration of cells and isolated mitochondria of a habituated non-organogenic (HNO) cell line (auxin- and cytokinin-independent) and of a normal (N) cell line (auxin- and cytokinin-requiring) from ... [more ▼]The respiration of cells and isolated mitochondria of a habituated non-organogenic (HNO) cell line (auxin- and cytokinin-independent) and of a normal (N) cell line (auxin- and cytokinin-requiring) from sugarbeet (Beta vulgaris L.) was investigated. Oxygen uptake by both cells and mitochondria of the HNO fine was higher than that of the N line. Respiration in the presence of cyanide (i.e. capacity of the alternative pathway) was also higher in the HNO callus as compared with the N one. The measurements of O-2 uptake from isolated HNO and N mitochondria showed that addition of a mixture of substrates (NADH, succinate, malate and NAD) resulted in a higher respiration via the CN-resistant pathway in mitochondria From HNO cells. The activity of cytochrome c oxidase was twice as high as in the N cells as compared with the HNO cells. Immunoblots also showed that a higher alternative oxidase protein was present in HNO cells than in the N cells. A model showing the relationships between the different metabolic pathways previously studied in the HNO cells and the higher respiration via the CN-resistant pathway in the HNO cells is proposed. [less ▲]Detailed reference viewed: 9 (1 ULg) Eclipse totale du 11 août 1999 et évolution de la basse ionosphèreDelcourt, J. J.; Jodogne, J.-C.; Biémont, Emile in Ciel et Terre (2000), 116(1), 6-7Detailed reference viewed: 8 (1 ULg) Reactions involving inorganic compoundsKrief, A.; Delmotte, C.; Colaux, Catherine in Pure & Applied Chemistry (2000), 72(9), 1709-1713Selenium 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) Loss of plant organogenic totipotency in the course of in vitro neoplastic progressionGaspar, Thomas ; Kevers, Claire ; Bisbis, Badia et alin In Vitro Cellular & Developmental Biology-Plant (2000), 36(3), 171-181The aptitude for organogenesis from normal hormone-dependent cultures very commonly decreases as the tissues are serially subcultured. The reasons for the loss of regenerative ability may vary under ... [more ▼]The aptitude for organogenesis from normal hormone-dependent cultures very commonly decreases as the tissues are serially subcultured. The reasons for the loss of regenerative ability may vary under different circumstances: genetic variation in the cell population, epigenetic changes, disappearance of an organogenesis-promoting substance, etc. The same reasons may be evoked for the progressive and eventually irreversible loss of organogenic totipotency in the course of neoplastic progressions from hormone-independent tumors and hyperhydric teratomas to cancers. As in animal cells, plant cells at the end of a neoplastic progression have probably undergone several independent genetic accidents with cumulative effects. They indeed are characterized by atypical biochemical cycles from which they are apparently unable to escape. The metabolic changes are probably not the primary defects that cause cancer, rather they may allow the cells to survive. How these changes, namely an oxidative stress, affect organogenesis is not known. The literature focuses on somatic mutations and epigenetic changes that cause aberrant regulation of cell cycle genes and their machinery. [less ▲]Detailed reference viewed: 101 (3 ULg) Feasability of monitoring neutrophils'migration into the lung with immunoscintigraphy: preliminary studyVotion, Dominique ; Harmegnies, N. F.; Lekeux, Pierre in European Journal of Nuclear Medicine (2000), 27Detailed reference viewed: 5 (0 ULg) La rémunération de base de l'apprenti victime d'un accident du travailMichiels, Olivier in Revue de Jurisprudence de Liège, Mons et Bruxelles (2000), 25L'article s'attache à la notion de "rémunération de base" de l'apprenti victime d'un accident du travail.Detailed reference viewed: 73 (4 ULg) Mujinga ou la soumission inconsciente à l’idéologie régnanteVanhaegendoren, Koen in Congo-Meuse. Revue des lettres belges et congolaises de langue française (2000), 4-5Detailed reference viewed: 59 (1 ULg)