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See detailDie monofrequente Oszilloresistometrie - Möglichkeiten und Grenzen eines nichtinvasiven Verfahrens zur Atemwiderstandsmessung beim Kalb
Reinhold, Petra; Close, Roland; Lekeux, Pierre ULg

in Deutsche Tierarztliche Wochenschrift (1994), 101(4), 146-150

The monofrequency forced oscillation technique (MFOT) has been found to be a simple, reproducible, fast and accurate method to carry out lung function testing in calves even under field conditions. If ... [more ▼]

The monofrequency forced oscillation technique (MFOT) has been found to be a simple, reproducible, fast and accurate method to carry out lung function testing in calves even under field conditions. If some technical as well as methodological requirements are taken into account, pulmonary or respiratory resistance can be assessed by means of the parameter oscillatory resistance (Ros). Furthermore, several Ros derived parameters are available for describing the functional status of the central bronchial system. Due to the low variability caused by methodological or intraindividual reasons, the MFOT represents a very qualified method for intraindividual studies. Comparing measuring results of different subjects, a higher biologically caused variance has to be taken into account. [less ▲]

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See detailCréer un programme de formation pour des professionnels de la Petite Enfance en Communauté germanophone de Belgique. Un enjeu pour le développement de la qualité de service.
Pirard, Florence ULg

in La Lettre. Formation. Développement local. L'accueil de la petite enfance: évaluation (1994), 3

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See detailFavoriser la reproduction des poissons à Lanaye.
Poncin, Pascal ULg; Keulen, C.

in Pêcheur Belge (Le) (1994), 6

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See detailSelective Antiprotozoal Activity of Some Strychnos Alkaloids
Wright, Colin; Allen, David; Cai, Ya et al

in Phytotherapy Research (1994), 8

The in vitro activities of 28 Strychnos alkaloids have been determined against three species of protozoa and the most active compounds were then assessed for in vitro cytotoxic activity against KB cells ... [more ▼]

The in vitro activities of 28 Strychnos alkaloids have been determined against three species of protozoa and the most active compounds were then assessed for in vitro cytotoxic activity against KB cells. 3',4'-dihydrousambarensine was the most active against Plasmodium falciparum and was relatively nontoxic to KB cells (cytotoxic/antiplasmodial ratio, 1474). Usambarensine displayed the most selectivity against Entamoeba histolytica while "',4'-dihydrousambarensine was the most selective compound against Giardia intestinalis although the cytotoxic/antiprotozoal ratios (20.4 and 6.6 respectively) were less favourable than the above.The four strychnobiline-type alkaloids were found devoid of activity against E. histolytica and G. intestinalis but to have weak antiplasmodial properties (7-13 times less active than chloroquine). None of the compounds containing only one indole ring system displayed antiprotozoal properties. [less ▲]

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See detailTwo silencing sub-domains of v-erbA synergize with each other, but not with RXR.
Martin, Bernd; Renkawitz, Rainer; Muller, Marc ULg

in Nucleic Acids Research (1994), 22(23), 4898-905

The thyroid hormone receptor (TR) and the retinoic acid receptor (RAR) induce gene expression in the presence of specific ligand and repress transcription in the absence of hormone. This repression is ... [more ▼]

The thyroid hormone receptor (TR) and the retinoic acid receptor (RAR) induce gene expression in the presence of specific ligand and repress transcription in the absence of hormone. This repression is mediated by an active silencing mechanism rather then by interference with DNA binding activators. V-erbA, a variant form of TR which is unable to bind hormone, represents a constitutive repressor. Here we show, using fusion proteins with the GAL4 DNA binding domain, that the minimal silencing domain of v-erbA extends from amino acids 389 to 632 and that internal deletions within this domain retain at least some repression function. Co-transfection experiments of different deletion mutants indicate that the silencing domain is composed of at least two sub-domains which are non-functional when tested individually. When combined in a heterodimeric complex, they synergize such that silencing activity is regained. In contrast to the retinoic acid receptor the retinoid X receptor does not contain a silencing domain. In addition it is unable to cooperate with the repression function of TR or v-erbA in a heterodimer. [less ▲]

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See detailLe Marquis et les castrats. Note sur un tabou sadien
Durand, Pascal ULg

in Art&Fact (1994), 13

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See detailTests standardisés de routine pour l'évaluation de la condition physique chez les chevaux d'endurance
Noel de Burlin, A; Art, Tatiana ULg; Amory, Hélène ULg et al

in Pratique Vétérinaire Equine (1994), 26

The purpose of this study was to try to assess the fitness of endurance horses by using a simple routine standardized treadmill exercise test performed before and after a training period. Seven endurance ... [more ▼]

The purpose of this study was to try to assess the fitness of endurance horses by using a simple routine standardized treadmill exercise test performed before and after a training period. Seven endurance horses aged 7 to 13 years, unfamiliar with the treadmill conditions and competing in international championship were tested twice in an air-conditioned laboratory, i.e. before and after a 4-month training period. The test was preceded by a 20 min warm-7 period and consisted of 2 min walk and 2 min trot (4.2 m/sec) with a slope of 0, 2, 4, 6, 8 and 10 The whole test lasted 45 min. Venous blood was sampled before and 4 min after each test. Heart rate was continuously recorded before, during and after the test with a cardiometer. Rectal temperature, respiratory rate and body weight were measured before and after the test. The completion of the test induced a significant decrease of the body weight, a significant increase in packed cell volume, cortisol, white blood cells, proportion of granulocytes, lactate, free fat acids and iso-enzyme LDH 5, and no change in the ions and in the activity of the other enzymes. Training did not induce significant changes in blood parameters, except in hacked cell volume and cortisol. Training induced a significant decrease in heart rate at all exercise intensities and during recovery. It was concluded that the test proposed in this study is simple, safe, suitable for horses unfamiliar with the treadmill and applicable in a 1-day clinic routine examination. In these conditions, the most reliable parameter for the assessment of fitness in endurance horses seems to be the heart rate recorded during 2 standardized tests performed before and after a training period [less ▲]

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See detailInsulin secretion, clearance and action before and after gastroplasty in severely obese subjects.
Letiexhe, Michel ULg; Scheen, André ULg; Gerard, Pascale ULg et al

in International Journal of Obesity & Related Metabolic Disorders (1994), 18(5), 295-300

This study investigated the effects of a drastic weight reduction on insulin secretion rate (ISR), insulin metabolic clearance rate (MCRI) and insulin sensitivity (SI) in severely obese subjects. A ... [more ▼]

This study investigated the effects of a drastic weight reduction on insulin secretion rate (ISR), insulin metabolic clearance rate (MCRI) and insulin sensitivity (SI) in severely obese subjects. A frequently sampled intravenous glucose tolerance test (FSIVGTT, 0.3 g/kg) was performed before and 8 +/- 1 months after a vertical ring gastroplasty in 12 overnight-fasted obese non-diabetic subjects; the results were compared to those obtained in 12 lean controls matched for age and sex. ISR was derived by deconvolution of plasma C-peptide levels; MCRI was obtained by dividing the area under the curve (AUC180 min) of ISR by the corresponding AUC of plasma insulin levels (IRI); the SI and the glucose effectiveness index (SG) were calculated by Bergman's minimal model. Before gastroplasty, obese subjects showed significantly higher ISR (P < 0.02), lower MCRI (P < 0.001), lower SI (P < 0.001) but similar SG when compared to lean controls. After gastroplasty (reduction of body weight from 104.8 +/- 3.8 to 73.4 +/- 3.6 kg and of BMI from 37.9 +/- 0.8 to 26.5 +/- 0.9 kg/m2; P < 0.001), ISR only decreased from 53,125 +/- 7968 to 42,302 +/- 3716 pmol/180 min (not significant) while AUC-IRI dramatically fell from 53,626 +/- 6378 to 21,111 +/- 2584 pmol.min/l; P < 0.001); consequently, MCRI markedly increased from 526 +/- 96 to 1257 +/- 150 ml/min/m2; P < 0.01). SI significantly rose from 3.12 +/- 0.45 to 7.10 +/- 1.20 x 10(-4) l/mU/min (P < 0.005) while SG remained unchanged.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailEffect of selenium compounds on murine B16 melanoma cells and pigmented cloned pB16 cells
Siwek, Brigitte; Bahbouth, E.; Serra, M. A. et al

in Archives of Toxicology (1994), 68(4), 246-254

Seleno-DL-cysteine and sodium selenate are toxic in B16 cells and this toxicity seems to involve glutathione metabolites.

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See detailL'éthique en ses terres amères
Vrancken, Didier ULg

in Education Permanente (1994), 121

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See detailChronostratigraphic relationships of tephras, pollen features, and 14C dates in the French Massif Central and in Eifel (Germany).
Juvigné, E; Bastin, B; Delibras, G et al

in Terra Nostra (1994), 1

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See detailA thyroid hormone receptor-dependent glucocorticoid induction.
Leers, Joerg; Steiner, Christoff; Renkawitz, Rainer et al

in Molecular Endocrinology (Baltimore, Md.) (1994), 8(4), 440-7

Glucocorticoid and thyroid hormones exert their effects in many body tissues by binding to their respective receptors. The search for possible cross-talking mechanisms in overlapping target cells led to ... [more ▼]

Glucocorticoid and thyroid hormones exert their effects in many body tissues by binding to their respective receptors. The search for possible cross-talking mechanisms in overlapping target cells led to the discovery of synergism between a thyroid hormone receptor-binding site and a cryptic glucocorticoid-responsive element. Glucocorticoid responsiveness could only be detected in the presence of thyroid hormone and its receptor. This synergism requires the glucocorticoid receptor (GR) DNA-binding domain and is mediated by the transactivation domains. We found that synergism also occurs when the thyroid hormone receptor is replaced by the retinoic acid receptor or the GR is replaced by the progesterone receptor. Synergism is qualitatively independent of the type of thyroid hormone receptor-binding site and promoter. In several combinations of promoter and response elements, including a retinoic acid response element, T3 induction was only seen in the presence of the cryptic glucocorticoid-responsive element, GR, and glucocorticoids. [less ▲]

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See detailIncidence des aménagements hydrauliques sur le contrôle du développement de la bilharziose (shistosomiase)
Pliez, A.; Moens, R.; Debouche, Charles ULg

in Annales de Gembloux (1994), (100), 53-65

Le développement des irrigations dans les zones tropicales et subtropicales du monde, pour augmenter les productions de nourriture, a provoqué la prolifération de maladies liées à l'eau comme la ... [more ▼]

Le développement des irrigations dans les zones tropicales et subtropicales du monde, pour augmenter les productions de nourriture, a provoqué la prolifération de maladies liées à l'eau comme la bilharziose (également appelée shistosomiase), la dengue, la filariose et l'onchocercose. [less ▲]

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See detailPresence of gd TcR+ Tumor Infiltrating Lymphocytes (TILs) in One Case of Pediatric Osteogenic Sarcoma
Moutschen, Michel ULg; Jacobs, Nathalie ULg; Hoyoux, Claire ULg et al

in International Journal of Pediatric Hematology/Oncology (1994)

To characterize ab and gd TcR expression in cultured TILs from a metastatic osteogenic sar- coma.Patient and methods: TILs were isolated from a lung metastasis of an osteogenic sarcoma in a 16- year-old ... [more ▼]

To characterize ab and gd TcR expression in cultured TILs from a metastatic osteogenic sar- coma.Patient and methods: TILs were isolated from a lung metastasis of an osteogenic sarcoma in a 16- year-old female patient. Culture conditions were IL- 2 and anti-CD3 MoAb+IL-2. TcR expression and surface phenotype were studied by flow cytometry. 4h-chromium release assays were used to assess cytotoxicity. Results:IL-2-expanded tumor infiltrating T-lym- phocytes contained 50% gd TcR+ cells whereas gd TcR+ cells represented 20% of T-cells in cultures expanded with anti-CD3 MoAb+IL-2. The phenotype of gd TcR+ cells was CD3+, CD16-, CD4-, CD8-, and CD29+. AnH-CD3 MoAb + IL-2-expanded TILs mediated a significant lysis of thé autologous tumor and of an allogeneic lymphoma and displayed a higher activity against thé NK-sensitive target K562. In cold target experiments, unlabeled autol- ogous tumor cells blocked thé lysis of K562, indicating that MHC-unrestricted effectors were involved in thé lysis of both targets. Conclusions: This report demonstrates thé ex- pansion of large numbers of gd TcR+ T-cells after short-term culture of TILs from a metastatic os- teosarcoma. Further studies are needed to déter- mine thé role of gd TcR+ cells in host immune responses directed against this tumor. [less ▲]

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See detailChromosomal localization of the callipyge gene in sheep (Ovis aries) using bovine DNA markers
Cockett, N. E.; Jackson, S. P.; Shay, T. D. et al

in Proceedings of the National Academy of Sciences of the United States of America (1994), 91

A mutation causing muscular hypertrophy, with associated leanness and improved feed efficiency, has been recently identified in domestic sheep (Ovis aries). Preliminary results indicate that an autosomal ... [more ▼]

A mutation causing muscular hypertrophy, with associated leanness and improved feed efficiency, has been recently identified in domestic sheep (Ovis aries). Preliminary results indicate that an autosomal dominant gene may be responsible for this economically advantageous trait. We have exploited the conservation in sequence and chromosomal location of DNA markers across Bovidae to map the corresponding callipyge locus to ovine chromosome 18 using a battery of bovine chromosome 21 markers. Chromosomal localization of the ovine callipyge locus is the first step toward positional cloning of the corresponding gene. [less ▲]

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See detailTypage moléculaire de Clostridium perfringers.
Daube, Georges ULg; Simon, P.; Limbourg, B. et al

in Annales de Médecine Vétérinaire (1994), 138

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See detailEvaluation of Matrix Metalloproteinases and Serine Proteases Activities in Three B16 Melanoma Cell Lines with Distinct Tumorigenic Potential
Baramova, E. N.; Coucke, P.; Leprince, Pierre ULg et al

in Anticancer Research (1994), 14(3A, May-Jun), 841-6

Mouse B16 melanoma cells (B16, parental line) and two derived clones either pigmented (B16P) or non pigmented (B16NP) were cultured as monolayers (2D) or on agar, as aggregates (3D). The productions of ... [more ▼]

Mouse B16 melanoma cells (B16, parental line) and two derived clones either pigmented (B16P) or non pigmented (B16NP) were cultured as monolayers (2D) or on agar, as aggregates (3D). The productions of gelatinases A and B (72 kDa and 92 kDa type IV collagenases) and their inhibitors (TIMP1 and TIMP2), plasminogen activators (PAs) and plasminogen activator inhibitors (PAI) were investigated. The B16 cell lines did not secrete any gelatinase, but they secreted TIMP2, tissue-type (t-PA), urokinase-type (u-PA) plasminogen activators and PAI-1 like activities. High levels of PAI activity were determined in conditioned media and cellular extracts of B16NP, which could account for the lower tumorigenic potential of these cells. In 3D cultures, the cellular extracts of the three cell lines contained essentially u-PA activity. This activity could contribute to the greater tumorigenic and invasive capacities of B16, B16P and B16NP when cultured in 3D. [less ▲]

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See detailCoût dans le secteur de la distribution d'eau en Wallonie et à Bruxelles : estimation d'une fonction de coût hédonique
Evrard, Olivier; Lejeune, Bernard ULg; Thiry, Bernard

in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (1994), 65(2), 333-360

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See detailValeurs de référence de la ferritine sérique chez l'adulte
Vernet, M.; Revenant, M. C.; Charlier, Corinne ULg et al

in Annales de Biologie Clinique (1994), 52

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See detail'Pattern' comportemental de type A : stress et maladie coronarienne : II. Aspects pratiques
Etienne, Anne-Marie ULg; Fontaine, Ovide ULg

in Revue Médicale de Liège (1994), XLIX(1), 36-48

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See detailL'analyse de la variance : une methode d'un autre âge ?
Claustriaux, Jean-Jacques ULg

in Biométrie-Praximétrie (1994), 34(2), 95-107

L'analyse de la variance est une ancienne méthode couramment utilisée pour le traitement statistique des données. Pour certains aspects, l'évolution de son utilisation pratique est présentée.

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See detailApports et limites de trois approches courantes des associations
Defourny, Jacques ULg

in Coopératives et Développement (1994), 26(1), 81-101

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See detailModular mutagenesis of a TIM-barrel enzyme: the crystal structure of a chimeric E. coli TIM having the eighth beta alpha-unit replaced by the equivalent unit of chicken TIM
Kishan, Radha; Zeelen, Ph. Johan; Noble, Martin E.M. et al

in Protein Engineering (1994), 7(8), 945-51

The crystal structure of a hybrid Escherichia coli triosephosphate isomerase (TIM) has been determined at 2.8 A resolution. The hybrid TIM (ETIM8CHI) was constructed by replacing the eighth beta alpha ... [more ▼]

The crystal structure of a hybrid Escherichia coli triosephosphate isomerase (TIM) has been determined at 2.8 A resolution. The hybrid TIM (ETIM8CHI) was constructed by replacing the eighth beta alpha-unit of E. coli TIM with the equivalent unit of chicken TIM. This replacement involves 10 sequence changes. One of the changes concerns the mutation of a buried alanine (Ala232 in strand 8) into a phenylalanine. The ETIM8CHI structure shows that the A232F sequence change can be incorporated by a side-chain rotation of Phe224 (in helix 7). No cavities or strained dihedrals are observed in ETIM8CHI in the region near position 232, which is in agreement with the observation that ETIM8CHI and E.coli TIM have similar stabilities. The largest CA (C-alpha atom) movements, approximately 3 A, are seen for the C-terminal end of helix 8 (associated with the outward rotation of Phe224) and for the residues in the loop after helix 1 (associated with sequence changes in helix 8). From the structure it is not clear why the kcat of ETIM8CHI is 10 times lower than in wild type E.coli TIM. [less ▲]

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See detailFunctional effects of a muscarinic receptor blockade during acute respiratory distress syndrome in double-muscled calves
Genicot, Bruno; Mouligneau, Frédéric; Close, Roland et al

in Veterinary Record : Journal of the British Veterinary Association (1994), 134(5), 110-113

Eighteen Belgian white and blue double-muscled calves suffering from the acute respiratory distress syndrome were studied. Fifteen of the calves inhaled ipratropium bromide (0.6 mg) four times a day for ... [more ▼]

Eighteen Belgian white and blue double-muscled calves suffering from the acute respiratory distress syndrome were studied. Fifteen of the calves inhaled ipratropium bromide (0.6 mg) four times a day for three to four days whereas the other three control calves inhaled sterile 0.9 per cent saline. All the animals were injected with ceftiofur sodium (1 mg/kg/day) for five days, the first injection being given one hour after the first inhalation of ipratropium bromide or saline. Arterial oxygen tension, alveolar arterial oxygen difference, carbon dioxide tension and arterial pH, respiratory and heart rates, oscillatory resistance and phase angle, measured by the mono-frequency forced oscillation technique, were recorded both before and one hour and 168 hours after the first inhalation. The measurement of oscillatory resistance and phase angle made it possible to resolve the impedance of the respiratory system into its real and imaginary components. The oscillatory compliance (Cosc) was determined from the imaginary component (Im). By one hour after the first inhalation of ipratropium bromide the oscillatory resistance was already significantly reduced and Im and Cosc had significantly increased, but the other parameters showed no significant improvement. However, between one hour and 168 hours after the first inhalation all the parameters reached physiological values. The control calves did not show any change. It was concluded that the pulmonary dysfunction associated with the acute respiratory distress syndrome in these calves was at least partly due to a severe bronchoconstriction. [less ▲]

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See detailLe plan régional d'aménagement du territoire wallon
Delnoy, Michel ULg; Pâques, Michel ULg

in Aménagement - Environnement (1994), n° spécial

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See detailSpecific inhibition of expression of a human collagen gene (COL1A1) with modified antisense oligonucleotides. The most effective target sites are clustered in double-stranded regions of the predicted secondary structure for the mRNA.
Laptev, A. V.; Lu, Z.; Colige, Alain ULg et al

in Biochemistry (1994), 33(36), 11033-9

A series of antisense oligonucleotides (ASOs) were synthesized and tested to define the best target sites within an RNA transcript of collagen for effective inhibition of expression. The test system ... [more ▼]

A series of antisense oligonucleotides (ASOs) were synthesized and tested to define the best target sites within an RNA transcript of collagen for effective inhibition of expression. The test system consisted of mouse NIH 3T3 fibroblasts that were stably transfected with a human minigene for procollagen I so that the cells simultaneously synthesized full-length mouse pro alpha 1 (I) chains and internally deleted human pro alpha 1 (I) chains. The sequences of the transcripts from both genes were compared, and a series of 28 ASOs were designed to target sites in which there were at least two base differences within a 20-nucleotide sequence between the human and mouse transcripts. Six of the ASOs specifically decreased the levels of pro alpha 1 (I) chain synthesized from the human gene without a decrease in the levels of pro alpha 1 (I) chains from the mouse endogenous gene. The most effective ASOs reduced the intracellular levels of human pro alpha 1 (I) chains relative to the mouse pro alpha 1 (I) chains to 37-67% of the control values. Combined addition of two effective ASOs or a second administration of the same effective ASO did not produce any additive effect. The results did not support previous suggestions that the best target sites for ASOs were sequences around initiation codons for translation, at intron-exon boundaries, or in single-stranded loops in hairpin structures. Also, the results did not support previous suggestions that the most effective ASOs are those with the highest affinities for their target sequences. Instead, the most consistent pattern in the data was that the most effective ASOs were those targeted to sequences that were predicted to form clustered double-stranded structures in RNA transcripts. [less ▲]

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See detailOPTICAL MULTICHANNEL ANALYSIS OF PROTOCHLOROPHYLLIDE PHOTOTRANSFORMATION IN DETERGENT-SOLUBILIZED ETIOPLAST MEMBRANES OF WHEAT
Franck, Fabrice ULg; OUAZZANI, M. A.; DUJARDIN, E. et al

in Zeitschrift Fur Naturforschung C-A Journal Of Biosciences (1994), 49(1-2), 125-131

Extracts of wheat etioplast membranes obtained after treatment with 7 mM n-octyl-beta-D-glucopyranoside (OG), n-dodecyl-beta-D-maltoside (DM) or Triton X-100 contained the three spectral forms of Pchlide ... [more ▼]

Extracts of wheat etioplast membranes obtained after treatment with 7 mM n-octyl-beta-D-glucopyranoside (OG), n-dodecyl-beta-D-maltoside (DM) or Triton X-100 contained the three spectral forms of Pchlide (the photoactive Pchlide(638) and Pchlide(638) and the inactive Pchlide(650)) in various relative amounds. The OG extract had a Pchlide composition close to that of the intact membranes whereas the DM extract was enriched in Pchlide(638) and the Triton extract was enriched in Pchlide(630). Measurements of the kinetics of phototransformation and of time-resolved absorbance spectra during phototransformation in continuous Light shows that the inactive Pchlide(630) is in fact slowly transformed to Chlide, especially in the Triton extract where this form is more abundant. Addition of NADPH favours the phototransformation of Pchlide(630) and the slow regeneration of Pchlide(638) and Pchlide(650) from Pchlide(630) in darkness after illumination. No such regeneration was however observed in the Triton extract. NADPH had only slight effects on the Chlide shift towards shorter wavelengths after phototransformation in solubilized membranes. [less ▲]

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See detailLa régression : un problème statistique complexe à partir d'une idée simple
Palm, Rodolphe ULg

in Biométrie-Praximétrie (1994), 34(2), 109-123

Comme beaucoup de domaines de la statistique, la régression a connu d'importants développements au cours de ces vingt-cinq dernières années et l'objectif de l'article est de présenter, de façon sommaire ... [more ▼]

Comme beaucoup de domaines de la statistique, la régression a connu d'importants développements au cours de ces vingt-cinq dernières années et l'objectif de l'article est de présenter, de façon sommaire, les développements relatifs à quelques aspects particuliers de la régression linéaire, même si certains éléments peuvent être facilement étendus ou adpatés au cas de la régression non linéaire. Nous examinerons tout d'abord le problème de la validation des résultats d'une régression, en considérant successivement les critères globaux de mesure de la qualité de la régression, la division des données et la validation croisée, les représentations graphiques et les mesures de l'influence. Ensuite, nous envisagerons l'établissement des équations de régression, en abordant le problème du choix des variables et en évoquant quelques alternatives à la régression classique, en relation, notamment, avec la colinéarité. Enfin, nous terminerons par quelques conclusions. [less ▲]

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See detailUtilisation des dossiers de contenus préparés dans le cadre d’une expérience de rénovation de l’enseignement fondamental en Communauté Française de Belgique
Delfosse, Catherine; Ledent, Maryse; Cloes, Marc ULg et al

in Revue de l'Education Physique (1994), 34(2-3), 99-102

Dans toute expérience d'éducation physique quotidienne de longue durée, impliquant les instituteurs titulaires des classes, soit en responsabilité totale ou en partage de responsabilités avec le maître ... [more ▼]

Dans toute expérience d'éducation physique quotidienne de longue durée, impliquant les instituteurs titulaires des classes, soit en responsabilité totale ou en partage de responsabilités avec le maître spécial comme dans l'expérience de rénovation de l'enseignement fondamental en Communauté française de Belgique, il est primordial de fournir une aide en matière de contenus d'enseignement. Il est évident qu'un généraliste comme l'est l'instituteur ne dispose que d'un éventail relativement limité d'exercices ou de situations à proposer aux enfants. Deux types d'aide sont généralement proposées: des documents et des consultations régulières avec des spécialistes. ... [less ▲]

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See detailExpression of intron-encoded maturase-like polypeptides in potato chloroplasts.
du Jardin, Patrick ULg; Portetelle, Daniel ULg; Harvengt, Luc et al

in Current Genetics (1994), 25(2), 158-163

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See detailA screening technique to isolate bacterial strains producing high molecular weight bacteriocins
Jabrane, A.; Destain, Jean-Pierre ULg; Compère, Philippe ULg et al

in Biotechnology Techniques (1994), 8(10), 751-754

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See detailLes méthodes d'analyse factorielle : principes et applications
Palm, Rodolphe ULg

in Biométrie-Praximétrie (1994), 34

This note describes in a simple way the principles of the factorial methods, and more particularly of the principal component anlaysis and the correspondence analysis. The emphasis is put on the elements ... [more ▼]

This note describes in a simple way the principles of the factorial methods, and more particularly of the principal component anlaysis and the correspondence analysis. The emphasis is put on the elements useful when interpreting the results of an analysis and the methods are illustrated by completely worked out examples. [less ▲]

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See detailComparaison de plusieurs types d'unités d'échantillonnage dans la perspective d'un inventaire forestier régional.
Lecomte, H.; Hebert, Jacques ULg; Rondeux, Jacques ULg

in Forestry Chronicle (1994), 70(3), 304-310

This study has been conducted in order to define the guidelines of a permanent forest inventory methodology that could applied to heterogenous forests located in the southern part of Belgium. Different ... [more ▼]

This study has been conducted in order to define the guidelines of a permanent forest inventory methodology that could applied to heterogenous forests located in the southern part of Belgium. Different types of sampling units generally used in European national inventories have been compared: fixed area sampling units (based upon 3 concentric circles), non fixed-area sampling units (Bitterlich plots using basal area factor of 2 and 4) and sampling units based upon a minimum number of trees (including nearly 15 measurable trees). In true conditions of application 259 sampling points have been selected according to a systematic rectangular grid (1.000 m x 500 m). Taking into account different criteria such as precision, cost and ease of use, the fixed-area sampling unit looks like the most adequate among the four types investigated. [less ▲]

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See detailVaricelle létale. Etude immunohistochimique et par hybridation in situ
Nikkels, Arjen ULg; Delvenne, Philippe ULg; Sadzot-Delvaux, Catherine ULg et al

in Annales de Dermatologie et de Vénéréologie (1994), 121(2), 113-117

We report a case of lethal varicella developed in an immunocompromised man in his seventies. A study by immunohistochemistry and in situ hybridization was conducted revealing the presence of the ... [more ▼]

We report a case of lethal varicella developed in an immunocompromised man in his seventies. A study by immunohistochemistry and in situ hybridization was conducted revealing the presence of the glycoprotein gpI specific for VZV and its corresponding nucleic acids found in multiple foci of most tissues and organs, except in the brain and paravertebral sympathetic ganglia. [less ▲]

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See detailBGU III 897 et PSI XII 1228: συγγραφαί notariées publiques?
Straus, Jean ULg

in Zeitschrift für Papyrologie und Epigraphik (1994), 104

Le BGU III 987 = M. Chr. 269 est certainement une suggraphe notariée publique et le PSI XII 1228 en est vraisemblablement une, même s'il présente un élément constitutif importun.

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See detailLa régression linéaire pondérée : principes et application
Palm, Rodolphe ULg

in Notes de Statistique et d'Informatique (1994), 4

This note briefly describes the prinicples of weighted linear regression and gives two completely worked out examples from the real world.

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See detailCommon Prevalence Of Alanine And Glycine In Mobile Reactive Center Loops Of Serpins And Viral Fusion Peptides - Do Prions Possess A Fusion Peptide
Callebaut, I.; Tasso, A.; Brasseur, Robert ULg et al

in Journal of Computer-Aided Molecular Design (1994), 8(2),

Serpin reactive centre loops and fusion peptides released by proteolytic cleavage are particularly mobile. Their amino acid compositions reveal a common and unusual abundance of alanine, accompanied by ... [more ▼]

Serpin reactive centre loops and fusion peptides released by proteolytic cleavage are particularly mobile. Their amino acid compositions reveal a common and unusual abundance of alanine, accompanied by high levels of glycine. These two small residues, which are not simultaneously abundant in stable helices (standard or transmembrane), probably play an important role in mobility. Threonine and valine (also relatively small amino acids) are also abundant in these two kinds of peptides. Moreover, the known 3D structures of an uncleaved serpin reactive centre and a fusion peptide are strikingly similar. Such sequences possess many small residues and are found in several signal peptides and in PrP, a protein associated with spongiform encephalopathies and resembling virus envelope proteins. These properties may be related to the infection mechanisms of these diseases. [less ▲]

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See detailMeasurement of insulin sensitivity by the minimal model method using a simplified intravenous glucose tolerance test: validity and reproducibility.
Duysinx, Bernard ULg; Scheen, André ULg; Gerard, Pascale ULg et al

in Diabète & Métabolisme (1994), 20(4), 425-32

This study aimed at testing whether 12 rather than 26 plasma glucose and insulin determinations can be used to calculate the indices of insulin sensitivity and of glucose effectiveness using Bergman's ... [more ▼]

This study aimed at testing whether 12 rather than 26 plasma glucose and insulin determinations can be used to calculate the indices of insulin sensitivity and of glucose effectiveness using Bergman's minimal model during a simple intravenous glucose tolerance test performed without tolbutamide injection. Two intravenous glucose tolerance tests (separated by 1 week) were performed in 7 lean normal subjects and a single test was performed in 9 severely obese non-diabetic subjects. Intra-subject reproducibility of insulin sensitivity was not significantly different when 26 or 12 time-points were analyzed (CV = 16.8 +/- 3.4 versus 18.9 +/- 3.8% respectively). Compared with the insulin sensitivity of the lean subjects, that of obese subjects was significantly (P < 0.001) and similarly reduced when using 12 (2.14 +/- 0.34 versus 7.97 +/- 1.29 10(-4)min-1/mU.1-1) rather than 26 determinations (2.13 +/- 0.42 versus 6.95 +/- 1.12 10(-4) min-1/mU.1-1) respectively. Glucose effectiveness was less reproducible than insulin sensitivity and was slightly diminished by the reduction of blood samples (relative error: -9.7 +/- 4.4%; P < 0.05). Finally, glucose effectiveness tended to be slightly lower in the morbidly obese subjects than in the lean controls with both modes of calculation. In conclusion, in non-diabetic subjects, the insulin sensitivity index can be accurately measured during a simple intravenous glucose tolerance test, without tolbutamide injection and with only 12 blood samples. The possibility of performing a simplified test should contribute to increase the use of the minimal model method for estimating insulin sensitivity in clinical practice. [less ▲]

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See detailEctopie cervicale du coeur chez un veau
Gabriel, Annick ULg; Vandeputte, Sébastien ULg; Rollin, Frédéric ULg et al

in Annales de Médecine Vétérinaire (1994), 138

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See detailControl of drug-resistant epilepsy after head injury with intravenous nimodipine.
HANS, Pol ULg; Triffaux, M.; BONHOMME, Vincent ULg et al

in Acta Anaesthesiologica Belgica (1994), 45(4), 175-8

The present report describes a young child who developed generalized epileptic seizures in the course of severe head injury. The start of epileptic seizures was associated with the occurrence of acute ... [more ▼]

The present report describes a young child who developed generalized epileptic seizures in the course of severe head injury. The start of epileptic seizures was associated with the occurrence of acute hyponatremia and hypoosmolality due to excessive Desmopressine administration. The seizures resistant to conventional therapy resolved completely with intravenous nimodipine infusion. [less ▲]

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See detailCrystal structure of recombinant human triosephosphate isomerase at 2.8 A resolution. Triosephosphate isomerase-related human genetic disorders and comparison with the trypanosomal enzyme
Mande, S. C.; Mainfroid, V.; Kalk, K. H. et al

in Protein Science : A Publication of the Protein Society (1994), 3(5), 810-21

The crystal structure of recombinant human triosephosphate isomerase (hTIM) has been determined complexed with the transition-state analogue 2-phosphoglycolate at a resolution of 2.8 A. After refinement ... [more ▼]

The crystal structure of recombinant human triosephosphate isomerase (hTIM) has been determined complexed with the transition-state analogue 2-phosphoglycolate at a resolution of 2.8 A. After refinement, the R-factor is 16.7% with good geometry. The asymmetric unit contains 1 complete dimer of 53,000 Da, with only 1 of the subunits binding the inhibitor. The so-called flexible loop, comprising residues 168-174, is in its "closed" conformation in the subunit that binds the inhibitor, and in the "open" conformation in the other subunit. The tips of the loop in these 2 conformations differ up to 7 A in position. The RMS difference between hTIM and the enzyme of Trypanosoma brucei, the causative agent of sleeping sickness, is 1.12 A for 487 C alpha positions with 53% sequence identity. Significant sequence differences between the human and parasite enzymes occur at about 13 A from the phosphate binding site. The chicken and human enzymes have an RMS difference of 0.69 A for 484 equivalent residues and about 90% sequence identity. Complementary mutations ensure a great similarity in the packing of side chains in the core of the beta-barrels of these 2 enzymes. Three point mutations in hTIM have been correlated with severe genetic disorders ranging from hemolytic disorder to neuromuscular impairment. Knowledge of the structure of the human enzyme provides insight into the probable effect of 2 of these mutations, Glu 104 to Asp and Phe 240 to Ile, on the enzyme. The third mutation reported to be responsible for a genetic disorder, Gly 122 to Arg, is however difficult to explain. This residue is far away from both catalytic centers in the dimer, as well as from the dimer interface, and seems unlikely to affect stability or activity. Inspection of the 3-dimensional structure of trypanosomal triosephosphate isomerase, which has a methionine at position 122, only increased the mystery of the effects of the Gly to Arg mutation in the human enzyme. [less ▲]

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See detailInvolvement Of The Cyclic Amp-Responsive Element-Binding Protein In Bovine Leukemia-Virus Expression In-Vivo
Adam, E.; Kerkhofs, P.; Mammerickx, M. et al

in Journal of Virology (1994), 68(9),

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See detailLes films Lumière : médiation symbolique et médiatisation
Servais, Christine ULg

in European Journal for Semiotic Studies = Revue Européenne d'Etudes Sémiotiques = Europäische Zeitschrift für Semiotische Studien (1994), 6(3-4), 505-538

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See detailAirway occlusion pressure and diaphragm global electromyograph analysis for evaluation of inspiratory muscle drive and neuromechanical coupling in cattle
Desmecht, Daniel ULg; Linden, Annick ULg; Rollin, Frédéric ULg et al

in American Journal of Veterinary Research (1994), 55

Although healthy and diseased bovine respiratory tracts have been intensively studied during the last years, to the authors' knowledge, there have been no attempts to objectively examine the inspiratory ... [more ▼]

Although healthy and diseased bovine respiratory tracts have been intensively studied during the last years, to the authors' knowledge, there have been no attempts to objectively examine the inspiratory drive from the brain to the nerves and muscles and its transformation in pressure. Such technique would be useful in assessing the possibility of altered ventilatory drive or inspiratory muscle fatigue in the context of an animal with ventilatory failure. The relation among ventilation, airway opening occlusion pressure generated 100 milliseconds after onset of inspiration (Pawo100ms) and 6 indexes describing diaphragmatic electromyographic activity (EMGdi) recorded via implanted fishhooks was evaluated during free and impeded CO2 rebreathing in 6 young bulls. The best significant linear correlations (r > 0.8) with inspiratory center afferent stimulation, as judged by end-tidal CO2 concentration in expired air, were found for Pawo100ms, peak moving time average or variance EMGdi, and mean integrated EMGdi, whatever had been the respiratory impedance. However, with an inspiratory load, Pawo100ms responses systematically had greater increase for a given change in the driving EMGdi, implying dependence of the former not only on neural input, but also on configurational factors that determine inspiratory muscle excitation-pressure generation couplings. The reproducibility of EMGdi absolute values and changes was satisfactory up to 10 hours, but could not be repeated from one day to the other. It was concluded that, provided the constancy of the electrical coupling of the recording system to the tissue being studied is ensured, specific EMGdi and Pawo100ms values correlate reliably with amount of CO2 during free and loaded breathing.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailA TEF-1 binding motif that interacts with a placental protein is important for the transcriptional activity of the hCS-B enhancer
Jacquemin, P.; Oury, Cécile ULg; Belayew, A. et al

in DNA & Cell Biology (1994), 13(10), 1037-45

The transcriptional activity of the human placental lactogen genes (choriosomatomammotropic hormone, hCS) is controlled by tissue-specific enhancers located 4 kb downstream from their respective origins ... [more ▼]

The transcriptional activity of the human placental lactogen genes (choriosomatomammotropic hormone, hCS) is controlled by tissue-specific enhancers located 4 kb downstream from their respective origins of transcription. The hCS-B enhancer is the strongest; its activity is mediated by synergism between two protein-binding sites (DF-3 and DF-4). The DF-4 site possesses a potential binding sequence for TEF-1, a known transcription factor. In this paper, we show by electrophoretic mobility-shift assays and antibody supershift experiments that TEF-1 does not bind to site DF-4. Mutations in the TEF-1-like binding motif of site DF-4 prevent formation of the DNA-protein complex, called complex f, in the presence of placental JEG-3 cell extracts. When HeLa cell extracts are used, another complex (complex c) is also affected. In transient expression experiments, TKCAT constructs linked to this mutated DF-4 site exhibit greatly reduced transcriptional activity when introduced into JEG-3 cells. Some cell lines contain both protein c and protein f (the proteins forming complexes c and f); when transfected, these lines display reduced DF-4-driven activity, suggesting that the two proteins could compete for the same DF-4 sequence. We conclude that protein f is important for the placenta-specific activity of the hCS-B enhancer. By UV cross-linking, we show that protein f is actually three polypeptides ranging in size from about 12 to 21 kD. [less ▲]

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See detailStereoelectronic properties of five anti-HSV-1 2′-deoxynucleosides analogues with heterocyclic substituents in the 5-position: A comparison with BVDU
Olivier, Anne; Creuven, Isabelle; Evrard, Christine ULg et al

in Antiviral Research (1994), 24

Structural and electronic characteristics of 5-(5-chlorothien-2-yl)-2′-deoxyuridine (I), 5-(furan-2-yl)-2′-deoxyuridine (II), 5-(5-bromofuran-2-yl)-2′-deoxyuridine (III), 5-(3-bromoisoxazol-5-yl)-2′ ... [more ▼]

Structural and electronic characteristics of 5-(5-chlorothien-2-yl)-2′-deoxyuridine (I), 5-(furan-2-yl)-2′-deoxyuridine (II), 5-(5-bromofuran-2-yl)-2′-deoxyuridine (III), 5-(3-bromoisoxazol-5-yl)-2′-deoxyuridine (V) and 5-(isoxazol-5-yl)-2′-deoxyuridine (IV) have been determined and compared to the BVDU (VI) characteristics in order to explain their respective affinity for the herpes simplex virus type 1 thymidine kinase (TK). Molecular structure of 5-(5-chlorothien-2-yl)-2′-deoxyuridine has been obtained using single crystal X-ray crystallography. Electrostatic potential maps, energy and topology of frontier orbitals were computed at the ab initio MO STO-3G and STO-3G* level. These studies reveal that the electrostatic potential energy maps are clearly dependent on the affinity of the compound for the enzyme. [less ▲]

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See detailIdentification Of Distinct Potyviruses In Mixedly-Infected Sweet-Potato By The Polymerase Chain-Reaction With Degenerate Primers
Colinet, D.; Kummert, J.; Lepoivre, Philippe ULg et al

in Phytopathology (1994), 84(1),

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See detailFirst-principles calculations of dielectric and effective charge tensors in Barium Titanate
Ghosez, Philippe ULg; Gonze, X.; Michenaud, J. P.

in Ferroelectrics (1994), 153

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See detailDu « bon usage » de la notion de syncrétisme
Pirenne-Delforge, Vinciane ULg; Motte, André ULg

in Kernos : Revue Internationale et Pluridisciplinaire de Religion Grecque (1994), 7

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See detailGénétique moléculaire des récepteurs olfactifs
Parmentier, M.; Vanderhaeghen, P.; Schurmans, Stéphane ULg et al

in Medecine Sciences : M/S (1994), 10

Les gènes codant pour les récepteurs olfactifs ont été isolés à partir d'une banque d'ADNc de la muqueuse olfactive. Ils constituent une famille très étendue (plusieurs centaines de gènes) codant pour des ... [more ▼]

Les gènes codant pour les récepteurs olfactifs ont été isolés à partir d'une banque d'ADNc de la muqueuse olfactive. Ils constituent une famille très étendue (plusieurs centaines de gènes) codant pour des récepteurs à sept passages transmembranaires couplés, par l'intermédiaire de protéines G, à l'activation de l'adénylyl cyclase et de la phospholipase C. La grande diversité des récepteurs olfactifs réside surtout dans les domaines transmembranaires III, IV, V et VI, qui portent les sites de liaison des ligands, les molécules odorantes, et répond sans doute à la diversité des ligands [less ▲]

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See detailLa responsabilité délictuelle des communes
Lewalle, Paul ULg; Dressen, Cécile; Durviaux, Ann-Lawrence ULg

in Revue de Droit Communal (1994)

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See detailCardio-respiratory, haematological and biochemical parameter adjustments to exercise: effect of a probiotic in horses during training
Art, Tatiana ULg; Votion, Dominique ULg; Mc Entee, Kathleen ULg et al

in Veterinary Research (1994), 25(4), 361-370

Two randomly distributed groups of thoroughbred horses were compared during a 12-week period for their cardio-respiratory and metabolic adjustment to strenuous exercise, training and detraining. The ... [more ▼]

Two randomly distributed groups of thoroughbred horses were compared during a 12-week period for their cardio-respiratory and metabolic adjustment to strenuous exercise, training and detraining. The horses were trained following the same standardized schedule and were regularly investigated using standardized treadmill exercise tests (SET) of increasing speed. After the first SET and during the whole experimental period, a group of 6 horses received a probiotic (Bioracing) once a day while a group of 5 horses received a placebo. All other conditions were similar for both groups. During each SET, the oxygen uptake, carbon dioxide output, tidal volume (inspired volume), respiratory rate and expired minute volume were obtained using 2 ultrasonic pneumotachographs and a mass spectrometer. All the parameters were the mean of the values calculated during the last 20 s of the SET. Heart rate was continuously measured with a polar horse tester. Venous blood was sampled before and after the test and analyzed for various biochemical parameters. In both groups, training induced significant modification in most of the cardio-respiratory parameters, ie peak oxygen uptake, peak carbon dioxide output, respiratory exchange ratio, ventilation/min to oxygen-uptake ratio and oxygen-uptake to heart-rate ratio. After the 3-week detraining period, most of the values were again similar to the pre-training values in both groups. However, the training-induced modifications of most of the cardio-respiratory parameters occurred earlier and were proportionally greater in the probiotic-treated group than in the control. The respiratory coefficient decreased in the control but not in the treated group. All other parameters changed similarly in both groups. This suggests that Bioracing could modify the physiological effects of training by improving some aerobic metabolic capacities for carbohydrate utilization, but that this effect occurs only during training and not during periods of physical inactivity [less ▲]

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See detailPure red cell aplasia following peripheral stem cell transplantation: complete response to a short course of high-dose recombinant human erythropoietin.
Martelli, M.; Ponchio, L.; Beguin, Yves ULg et al

in Haematologica (1994), 79(5), 456-9

We studied a patient who developed pure red cell aplasia (PRCA) following peripheral stem cell transplantation for non-Hodgkin lymphoma. Serum erythropoietin was appropriate for the degree of anemia ... [more ▼]

We studied a patient who developed pure red cell aplasia (PRCA) following peripheral stem cell transplantation for non-Hodgkin lymphoma. Serum erythropoietin was appropriate for the degree of anemia. Corticosteroid treatment was ineffective. Four months after transplantation rHuEpo was administered subcutaneously at a dose of 150 U/Kg per day, five days a week for 8 weeks. Treatment induced an erythropoietic response and corrected anemia. Response was maintained following discontinuation of rHuEpo. This study and previous reports indicate that high doses of rHuEpo given over a short time can resolve PRCA following autologous or allogeneic stem cell transplantation. [less ▲]

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See detailUtilisation du milieu et étude du dommaine vital chez le martin pêcheur en période de reproduction
Loncin, Anne; Libois, Roland ULg

in Aves (1994), 31(2-3-4), 197-198

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See detailA new species of trametes from Papua New Guinea
Castillo Cabello, Gabriel ULg

in Mycotaxon (1994)

Trametes demoulinii from Papua New guinea is descrebed as new. The new taxon is closest to Trametes conchifer and Trametes membranacea, both from America and Trametes cingulata know in Africa and East ... [more ▼]

Trametes demoulinii from Papua New guinea is descrebed as new. The new taxon is closest to Trametes conchifer and Trametes membranacea, both from America and Trametes cingulata know in Africa and East Asia. In addition to basidiomata, cultural characters of the new species are described. [less ▲]

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See detailModulation of the acetylcholine- and substance P-induced pulmonary edema by calcitonin gene-related peptide in the rabbit.
Delaunois, Annie ULg; Gustin, Pascal ULg; Ansay, Michel ULg

in Journal of Pharmacology and Experimental Therapeutics (The) (1994), 270(1), 30-6

The effects of calcitonin gene-related peptide (CGRP) (6 x 10(-8) M) on hemodynamics and on pulmonary microvascular permeability were investigated in isolated, perfused rabbit lungs by measuring the ... [more ▼]

The effects of calcitonin gene-related peptide (CGRP) (6 x 10(-8) M) on hemodynamics and on pulmonary microvascular permeability were investigated in isolated, perfused rabbit lungs by measuring the arterial, capillary and venous pressures and the capillary filtration coefficient (Kf,c). CGRP was administered alone or in combination with capsaicin (10(-4) M), acetylcholine (ACh) (10(-11) M to 10(-7) M), substance P (SP) (10(-10) M to 10(-6) M) and serotonin (10(-4) M). The influence of a specific antagonist of CGRP receptors, CGRP8-37 (10(-8) M), on the pulmonary edema induced by these mediators was also considered. CGRP had no direct effect on the vascular pressures or on Kf,c. Capsaicin and serotonin induced an increase in Kf,c of 271 +/- 49% and 676 +/- 147% of base line, respectively. ACh and SP also increased the microvascular permeability, in proportion to the concentration. The effects of capsaicin, ACh and SP have been related to the activation of neurokinin NK1 receptors. Co-administration of CGRP with capsaicin and ACh enhanced the increase in Kf,c induced by these two drugs. By contrast, when co-injected with SP, CGRP inhibited the Kf,c increase induced by 10(-8) M and 10(-7) M of SP (P < .05) and significantly decreased the arterial and capillary pressures. CGRP also partly prevented the pulmonary edema induced by serotonin (P < .05). Pretreatment with CGRP8-37 partly prevented the effects of capsaicin and ACh on Kf,c but bestowed no protection against SP-induced pulmonary edema. These data suggest that CGRP is co-released with SP from the C-fibers upon the action of capsaicin and ACh in the rabbit lung. Because CGRP potentiated the pulmonary edema induced in capsaicin and ACh, but decreased the effects of SP, we hypothesize that CGRP exerts a positive retro-control on the release of neuropeptides by these fibers but can attenuate their effects on the target cells. [less ▲]

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See detailLe paradis d'une ville au siècle de Louis XIV
George, Philippe ULg

in Annales du Cercle Hutois des Sciences et Beaux-Arts (1994), XLVIII

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See detailGelatinase A expression and localization in human breast cancers. An in situ hybridization study and immunohistochemical detection using confocal microscopy.
Polette, M.; Gilbert, N.; Stas, I. et al

in Virchows Archiv : An International Journal of Pathology (1994), 424

The gelatinase A (72 kDa type IV collagenase) is a matrix metallo-proteinase which degrades basement membrane collagens. Various studies emphasize its role in stromal invasion of cancers, but there is ... [more ▼]

The gelatinase A (72 kDa type IV collagenase) is a matrix metallo-proteinase which degrades basement membrane collagens. Various studies emphasize its role in stromal invasion of cancers, but there is some controversy about its origin. Gelatinase A was localized by immunohistochemistry using confocal microscopy in 15 human mammary carcinomas. In addition, the cells responsible for the synthesis of this enzyme were detected by in situ hybridization. Most invasive and non-invasive tumour cells were labelled by immunohistochemistry. Of particular interest was the pattern observed in some pre-invasive areas. Gelatinase A was found in fibroblasts in close contact with pre-invasive tumour clusters. Confocal observation allowed a more precise localization of gelatinase A to the periphery of tumour clusters along the basement membranes and in peritumour fibroblasts. The malignant epithelial cells were negative by immunohistochemistry in these areas. By in situ hybridization, mRNAs encoding gelatinase A were detected only in fibroblasts in close contact with pre-invasive and well differentiated tumour clusters. These findings support the hypothesis that peritumour fibroblasts produce gelatinase A and that breast cancer cells may bind this enzyme to their cell surface and/or internalize it. [less ▲]

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See detailThe experience of radical prostatectomy for locally confined prostate cancer in Liege.
Bouffioux, Christian ULg; de Leval, Jean ULg; Andrianne, Robert ULg et al

in Acta Urologica Belgica (1994), 62(1), 51-9

The authors report their experience of 148 radical prostatectomies performed for adeno-carcinoma. They expose the reasons which have led them to adopt this kind of treatment and the reasons explaining a ... [more ▼]

The authors report their experience of 148 radical prostatectomies performed for adeno-carcinoma. They expose the reasons which have led them to adopt this kind of treatment and the reasons explaining a nearly exponential increase of the frequency of the operation during the last 5 years. They underline the importance of lymphadenectomy and the safety of frozen sections of the nodes. The surgical technique is briefly commented and the (low) morbidity of the operation is reviewed. They compare the results of RPV to those of external radiotherapy, watchful attitude or immediate hormonal treatment and they conclude in insisting on the benefit of the surgical approach as far as indications (which are defined) are strictly followed. [less ▲]

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See detail3D turbulence field on the north-western european continental-shelf
Martin, Géraldine ULg; Delhez, Eric ULg

in Tellus : Series A (1994), 46(2), 98-112

The 3-dimensional, non-linear, baroclinic, GHER mathematical model for the study of mesoscale motions (time scale of several hours to several days: tides, storm surges, ...) is described. Particular ... [more ▼]

The 3-dimensional, non-linear, baroclinic, GHER mathematical model for the study of mesoscale motions (time scale of several hours to several days: tides, storm surges, ...) is described. Particular attention is paid to the turbulent closure based on an evolution equation for the turbulent kinetic energy and a parametric expression of the mixing length (k-model). Appropriate boundary conditions and numerical techniques (mode-splitting, implicity, sigma-coordinate system, advection scheme) are described. The model is applied to the simulation of the M2 tide on the North-Western European Continental Shelf not only without wind but also in typical winter and summer conditions. Large spatial variations of the turbulent kinetic energy appear as a result of the variations of depth and tidal activity around the shelf. These variations are clearly related to the different turbulence regimes observed in summer, with frontal structures separating well-mixed waters from stratified ones. The structure and evolution of the vertical profiles of turbulence variables are described and explained in barotropic and baroclinic conditions, under different wind forcings. The evolution of these profiles at the M2 tide frequency largely depends on the eccentricity of the tidal ellipse. [less ▲]

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See detailLes transplantations de cellules de Schwann syngéniques dans les lésions médullaires: résultats, limitations et perspectives
Martin, Didier ULg

in Bulletin et Mémoires de l'Académie Royale de Médecine de Belgique (1994), 149(5-7), 279-89289-91

After a central nervous system (CNS) injury, there is only an "abortive regeneration" of axons, while injured axons regenerate vividly in the peripheral nervous system (PNS). This difference is due, at ... [more ▼]

After a central nervous system (CNS) injury, there is only an "abortive regeneration" of axons, while injured axons regenerate vividly in the peripheral nervous system (PNS). This difference is due, at least in part, to the existence in the periphery of Schwann cells and of growth promoting proteins they synthetize. One strategy to promote regrowth of central axons can be therefore, to modify (i.e. "peripheralize") the microenvironment by transplanting biologically active Schwann cells into the lesion site. In a rat model of traumatic paraplegia by inflation of a subdural microballoon, we performed syngeneic transplants of Schwann cells. These cells are cultured from adult dorsal root ganglia and can be kept in vitro for several months. They are transplanted in the injured spinal cord. The grafted Schwann cells are well integrated in the host tissue without detectable inflammatory reaction. Cystic cavitation and astrogliosis are reduced in grafted animals as compared to injured, non-grafted animals. The transplant is invaded by abundant, mainly unmyelinated axons which are immunoreactive for substance P, VIP or CGRP, i.e. transmitters known to be present in DRG afferents. Supraspinal afferents containing 5HT, TH or CCK accumulate at the rostral margin of the graft. Experimental procedures trying to stimulate the invasion of the graft by descending fibers, i.e. by inducing a chemoattraction are therefore of crucial importance for functional recovery. [less ▲]

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See detailBehavioural study of hybridization between Barbus barbus and Barbus meridionalis
Poncin, Pascal ULg; Jeandarme, J.; Berrebi, P.

in Journal of Fish Biology (1994), 45

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See detailProtection du vendeur : les garanties légales et conventionnelles
Gosselin, Antoinette ULg

in Actualités du Droit (1994), (4), 933-972

The contribution envisages the protection of the seller as part of the cession of a firm in return for remuneration, giving rise to the payment of a price in exchange for the transfer of ownership. Sale ... [more ▼]

The contribution envisages the protection of the seller as part of the cession of a firm in return for remuneration, giving rise to the payment of a price in exchange for the transfer of ownership. Sale can concern a business or a number of actions or parts representative of an important party of the capital allowing to acquire the control of the society. The first party examines the lawful protection of the giving up, the second conventional guarantees in which giving it up can think to protect itself against the nonpayment of price by the seller. [less ▲]

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See detailComment évaluer la sensibilité à l'insuline en pratique?
Scheen, A. J.; Paquot, Nicolas ULg; Letiexhe, M. R. et al

in Diabète & Métabolisme (1994), 20(6, Nov-Dec), 556-61

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See detailMachine learning, neural networks and statistical pattern recognition for voltage security: a comparative study
Wehenkel, Louis ULg; Van Cutsem, Thierry ULg; Pavella, Mania ULg et al

in International Journal of Intelligent Systems (1994), 2

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See detailBiodegradation of the polycyclic aromatic hydrocarbons phenanthrene, naphtalene and biphenyl by bacteria isolated from a contaminated soil.
Detaille, D.; Jacques, Ph.; Thonart, Philippe ULg

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1994), 102(B8),

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See detailEfficacité de la radiothérapie pour le traitement des récidives en gynécologie oncologique
COUCKE, Philippe ULg; Sartorelli, B

in Revue Médicale de la Suisse Romande (1994), 114(9), 799-804

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See detailCLOE, A NEW RATE-TYPE CONSTITUTIVE MODEL FOR GEOMATERIALS THEORETICAL BASIS AND IMPLEMENTATION
CHAMBON, René; DESRUES, Jacques; HAMMAD, Wallid et al

in International Journal for Numerical and Analytical Methods in Geomechanics (1994), 18(4), 253-278

The paper describes the basic ideas and the main features of a new class of constitutive laws, in the framework of incrementally non-linear constitutive equations. CLoE is a generic name for that new ... [more ▼]

The paper describes the basic ideas and the main features of a new class of constitutive laws, in the framework of incrementally non-linear constitutive equations. CLoE is a generic name for that new class of laws, with reference to consistency at the limit surface, and explicit localization analysis. A top-down analysis of the model is presented, and illustrated by examples. [less ▲]

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See detailNatural-Convection Above Line Heat-Sources In Greenhouse Canopies
Aubinet, Marc ULg; Deltour, Jules

in International Journal of Heat and Mass Transfer (1994), 37(12),

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See detailMechanism of Thiamine Transport in Neuroblastoma Cells. Inhibition of a High Affinity Carrier by Sodium Channel Activators and Dependence of Thiamine Uptake on Membrane Potential and Intracellular Atp
Bettendorff, Lucien ULg; Wins, Pierre

in Journal of Biological Chemistry (1994), 269(20), 14379-14385

Nerve cells are particularly sensitive to thiamine deficiency. We studied thiamine transport in mouse neuroblastoma (Neuro 2a) cells. At low external concentration, [14C]thiamine was taken up through a ... [more ▼]

Nerve cells are particularly sensitive to thiamine deficiency. We studied thiamine transport in mouse neuroblastoma (Neuro 2a) cells. At low external concentration, [14C]thiamine was taken up through a saturable high affinity mechanism (Km = 35 nM). This was blocked by low concentrations of the Na+ channel activators veratridine (IC50 = 7 +/- 4 microM) and batrachotoxin (IC50 = 0.9 microM). These effects were not antagonized by tetrodotoxin and were also observed in cell lines devoid of Na+ channels, suggesting that these channels are not involved in the mechanism of inhibition. At high extracellular concentrations, thiamine uptake proceeds essentially via a low affinity carrier (Km = 0.8 mM), insensitive to veratridine but blocked by divalent cations. In both cases, the uptake was independent on external sodium, partially inhibited (10-35%) by depolarization and sensitive to metabolic inhibitors. A linear relationship between the rate of thiamine transport and intracellular ATP concentration was found. When cells grown in a medium of low thiamine concentration (6 nM) were exposed to 100 nM extracellular thiamine, a 3-fold increase in intracellular thiamine diphosphate was observed after 2 h while the concomitant increase in intracellular free thiamine was barely significant. These data suggest a secondary active transport of thiamine, the main driving force being thiamine phosphorylation rather than the sodium gradient. [less ▲]

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See detailAnalysis methodology, experimental investigation and computer optimization of a passive solar commercial building in the Belgian climate
Andre, Philippe ULg; Nicolas, Jacques ULg; Rivez, Jean-François et al

in Solar Energy (1994), 52(1), 9-25

The Fondation Universitaire Luxembourgeoise (FUL) building (completed in 1986) has been selected as a Belgian candidate for participation in the IEA (International Energy Agency) Task XI project devoted ... [more ▼]

The Fondation Universitaire Luxembourgeoise (FUL) building (completed in 1986) has been selected as a Belgian candidate for participation in the IEA (International Energy Agency) Task XI project devoted to passive solar commercial buildings. Therefore, an evaluation methodology has been set up and a monitoring plan has been defined and performed. Together with this experimental investigation, intensive computer simulation work has defined an optimized design of the building. The main results show that the recorded performance can be improved to an extent of 15% energy savings, which yields a correct performance for a passive solar building in the temperate maritime Belgian climate. [less ▲]

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See detailComment on the paper "Oscillator Strengths for Some Systems with the ns2np ground-state configuration: II. Gallium Isoelectronic Sequence
Biémont, Emile ULg; Marcinek, R.; Migdalek, J. et al

in Journal of Physics : B Atomic Molecular & Optical Physics (1994), 27

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See detailDifferential diagnosis of Alzheimer's disease with PET.
Salmon, Eric ULg; Sadzot, Bernard ULg; Maquet, Pierre ULg et al

in Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine (1994), 35(3), 391-8

PET studies have demonstrated bilateral temporo-parietal hypoperfusion and hypometabolism in probable and definite Alzheimer's disease (AD), a pattern that may help differentiate AD from other dementias ... [more ▼]

PET studies have demonstrated bilateral temporo-parietal hypoperfusion and hypometabolism in probable and definite Alzheimer's disease (AD), a pattern that may help differentiate AD from other dementias. METHODS: To evaluate the diagnostic power of cerebral metabolic distribution patterns for "cortical" degenerative dementias, PET scans obtained from 129 patients referred for differential diagnosis of dementia were analyzed visually. RESULTS: Sixty-five patients had a final clinical diagnosis of probable AD. Ninety-seven percent (97%) of those had abnormal metabolic scans and 94% showed a suggestive pattern of bilateral or unilateral temporo-parietal hypometabolism (with or without frontal involvement). Hypometabolism was unilateral in 23% of patients. Five subjects with a neuropathologically proven diagnosis of Alzheimer's disease had a suggestive metabolic pattern. One of those was an early case with frontal hypometabolism exceeding temporo-parietal involvement. Two patients with Alzheimer's-type dementia had isolated bilateral frontal hypometabolism. CONCLUSIONS: This alternative metabolic pattern may correspond to a non-Alzheimer pathology occurring in 10%-20% of patients suffering from clinically probable Alzheimer's disease. Most of the patients with possible but atypical Alzheimer's-type dementia showed isolated bilateral frontal involvement. This metabolic pattern probably corresponds to different diseases, such as Pick's disease, frontal lobe dementia or progressive subcortical gliosis. [less ▲]

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See detailPole, albedo and shape of the minor planets 624 Hektor and 43 Ariadne: Two tests for comparing four different pole determination methods
Detal, Alain ULg; Hainaut, O.; Pospieszalska-Surdej, A. et al

in Astronomy and Astrophysics (1994), 281

Asteroids 624 Hektor and 43 Ariadne have been observed photometrically at the European Southern Observatory (La Silla, Chile) in order to determine their pole orientation. The lightcurves (1984 and 1991 ... [more ▼]

Asteroids 624 Hektor and 43 Ariadne have been observed photometrically at the European Southern Observatory (La Silla, Chile) in order to determine their pole orientation. The lightcurves (1984 and 1991 oppositions for Hektor, and 1985 for Ariadne) are presented. Some of the traditional pole determination methods have been improved, and completely original ones have been developed. They are described and applied to the newly recorded and previously published light curves. The results are commented and compared with previous ones. In addition to the pole orientation, we also derive some information on the shape or the albedo distribtuion of the objects. With the aim of optimizing future observations of these asteroids, we present some graphs showing the best longitudes where they should be measured. Finally, we suggest some improvements in the pole determination and modeling methods based upon photometric data. [less ▲]

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See detailEvaluation of agents used in osteoporosis: What are the needs ?
Reginster, Jean-Yves ULg

in Osteoporosis Japan (1994), 2

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See detailAssignment of the human ZNF83 (HPF1) zinc finger gene to chromosome 19q13.3-q13.4
Marine, Jean-Christophe; Bellefroid, Eric J.; Bourguignon, Catherine et al

in Genomics (1994), 21(1), 285-6

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See detailA case of tracheal fibrolipoma.
Baharloo, F; CORHAY, Jean-Louis ULg; Hotermans, G et al

in Acta Clinica Belgica (1994), 49(1), 23-5

We report the case of a tracheal fibrolipoma in a 40-year-old man successfully treated by laser photocoagulation. The clinical and pathological aspects, as well as the therapeutical options of this rare ... [more ▼]

We report the case of a tracheal fibrolipoma in a 40-year-old man successfully treated by laser photocoagulation. The clinical and pathological aspects, as well as the therapeutical options of this rare upper airway benign tumor are discussed. [less ▲]

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See detailEpidemiological evaluation of a monoclonal ELISA detecting antibodies against bovine leukaemia virus in serum pools.
Knapen, K.; Kerkhofs, P.; Thiry, Etienne ULg et al

in Epidemiology & Infection (1994), 113(3), 563-9

Sensitivity, specificity and predictive values of an enzyme-linked immunosorbent assay (ELISA) for detecting antibodies against bovine leukaemia virus (BLV) were evaluated using a representative sample of ... [more ▼]

Sensitivity, specificity and predictive values of an enzyme-linked immunosorbent assay (ELISA) for detecting antibodies against bovine leukaemia virus (BLV) were evaluated using a representative sample of 145 serum pools, comprising from 3 to 48 individual sera. The sample was constituted according to the frequency distribution of the negative and positive pools analysed during a screening involving the whole cattle population of Belgium. Sensitivity and specificity were estimated to 88.9% and 100% and the predicted negative and positive values were 99.9% and 100%, respectively. These results indicate the use of serum pools is suitable for the detection of BLV infected herds in eradication campaigns. [less ▲]

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See detailDistribution of POC, PON and particulate Al, Cd, Cr, Cu, Pb, Ti, Zn and deltaC13 in the English Channel and adjacent areas
Dauby, Patrick ULg; Frankignoulle, Michel; Gobert, Sylvie ULg et al

in Oceanologica Acta (1994), 17(6), 643-657

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See detailModélisation mathématique appliquée à la délimitation des zones de protection: cas du site de captage de Vivegnis (plaine alluviale de la Meuse, Belgique)
Derouane, Johan; Dassargues, Alain ULg

in Bulletin du Centre d'Hydrogéologie de l'Université de Neuchätel (Suisse) (1994), 13

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See detailOù peut-on planter l’aulne glutineux avec succès ?
Claessens, Hugues ULg

in Silva Belgica (1994), 101

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See detailCircadian rhythms and the induction of flowering in the long-day grass Lolium temulentum L.
Périlleux, Claire ULg; Bernier, Georges ULg; Kinet, Jean Marie

in Plant, Cell & Environment (1994), 17(6), 755-761

Plants of Lolium temulentum L. strain Ceres were grown in 8-h short day (SD) for 45 d before being exposed either to a single long day (LD) or to a single 8-h SD given during an extended dark period. For ... [more ▼]

Plants of Lolium temulentum L. strain Ceres were grown in 8-h short day (SD) for 45 d before being exposed either to a single long day (LD) or to a single 8-h SD given during an extended dark period. For LD induction, the critical photoperiod was between 12 and 14 h, and more than 16 h were needed for a maximal flowering response. During exposure to a single 24-h LD, the translocation of the floral stimulus began between the fourteenth and the sixteenth hours after the start of the light period, and was completed by the twenty-fourth hour. Full flowering was also induced by one 8-h SD beginning 4 or 28 h after the start of a 40-h dark period, i.e. by shifting 12 h forward or beyond the usual SD. The effectiveness of a so-called 'displaced short day' (DSD) was not affected by light quality and light intensity. With a mixture of incandescent and fluorescent lights at a total photosynthetic photon flux density of 400 µmol m-2 s-1, a 4-h light exposure beginning 4 h after the start of a 40-h dark period was sufficient to induce 100 flowering. The flower-inducing effect of a single 8-h DSD was also assessed during a 64-h dark period. Results revealed two maxima at a 20-h interval. This fluctuation in light sensitivity suggests that a circadian rhythm is involved in the control of flowering of L. temulentum. [less ▲]

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See detailT-CELLS SKIN LYMPHOMA IN 3 DOGS
Gilbert, S.; Clercx, Cécile ULg; Jauniaux, Thierry ULg et al

in Annales de Médecine Vétérinaire (1994), 138(8), 587-595

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See detailLes dommages dus aux plans et leur indemnisation dans le cadre du CWATUP
Delnoy, Michel ULg

in Aménagement - Environnement (1994), 3

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See detailVibration amplitudes caused by parametric excitation of cable stayed structures
Lilien, Jean-Louis ULg; Pinto da Costa, Antonio

in Journal of Sound & Vibration (1994), 174(N°1), 69-90

This paper deals with one kind of cable vibrations : the ones caused by parametric excitation.

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See detailProtection of the small bowel with a silicone tissue expander prosthesis and a polyglycolic acid mesh during radiation therapy for cervical carcinoma
Delaloye, J-F; Cuttat, J-F; COUCKE, Philippe ULg et al

in British Journal of Obstetrics & Gynaecology (1994), 101

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See detailA comparative study of reporter gene activities in fish cells and embryos
Sekkali, B.; Hellemans, B.; Belayew, A. et al

in Molecular Marine Biology and Biotechnology (1994), 3

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See detailSpecific DNA probes to detect Escherichia coli strains producing cytotoxic necrotising factor type 1 or type 2
Oswald, E.; Pohl, P.; Jacquemin, E. et al

in Journal of Medical Microbiology (1994), 40

Detailed reference viewed: 15 (3 ULg)