Compte rendu de W. Cavini, M.C. Donnini Maccio, M.S. Funghi, D. Manetti, Studi su papiri greci di logica e medicina, Firenze, 1985

in Archives Internationales d'Histoire des Sciences (1986), 36

Perpectives économiques du transport de conteneurs par bateaux fluvio-maritimes à partir de ports d'intérieur

in Bulletin de l'Association Technique Maritime et Aéronautique (1986)

Les souches d'Escherichia coli entérotoxinogènes du veau produisent un seul type de toxine active chez le souriceau : STaP

in Annales de Médecine Vétérinaire (1986), 130

Detection of anti-laminin antibodies in sera by latex agglutination.

in Clinical Chemistry (1986), 32(8), 1468-72

We describe a latex particle agglutination assay for detecting circulating antibodies against laminin, a noncollagenous glycoprotein of basement membranes. Polystyrene latex particles on which laminin has ... [more ▼]

We describe a latex particle agglutination assay for detecting circulating antibodies against laminin, a noncollagenous glycoprotein of basement membranes. Polystyrene latex particles on which laminin has been adsorbed are incubated with serum for about 25 min at 42-45 degrees C. The agglutination is then measured by counting residual unagglutinated particles. Polyethylene glycol 6000 enhances the agglutination. The assay is fully automated, yielding results in about 45 min, for 50 samples per hour. Addition of purified laminin abolishes the agglutination of laminin-coated particles in practically all positive sera. The anti-laminin antibody titers obtained by this latex immunoassay and by radioimmunoassay correlated well in 161 sera from patients with suspected or established renal diseases. The agglutination assay more frequently gave positive results for cases of glomerulonephritis with linear deposits (20/22 cases) than for glomerulonephritis with granular deposits (7/68) or glomerulonephritis with no glomerular deposits (2/13). The finding of low anti-laminin antibody titers in sera from about 15% (34/230) of the healthy subjects suggests that these autoantibodies are pathogenic only in certain circumstances. [less ▲]

Le mélange diphénylborate d'aminoéthanol-PEG 400: Un intéressant réactif de révélation des flavonoïdes

in Journal of Chromatography (1986), 351

NP/PEG reagent is very useful for the chromatographic identification of various classes of flavonoids.

Violence et agressivité dans la réponse aux tentatives de suicide

in Psychologie Médicale (1986), 18(6), 907-908

L'information, facteur de la production agricole.

in Annales de Gembloux (1986), 92(2),

La télématique en arboriculture fruitière

in Fruit Belge (1986), (416), 276-279

Singlet oxygen production by UV and visible photoexcited porphyrins under different states of aggregation

in Photobiochemistry and Photobiophysics (1986), 12

Tryptophan photosensitization was used to determine the quantum yield of singlet oxygen production by porphyrins irradiated with ultraviolet or visible light in phosphate buffer at pH 7.0. From a ... [more ▼]

Tryptophan photosensitization was used to determine the quantum yield of singlet oxygen production by porphyrins irradiated with ultraviolet or visible light in phosphate buffer at pH 7.0. From a preliminary study of aggregation of these dyes, it was established that uroporphyrin, hematoporphyrin and deuteroporphyrin allowed to investigate the behaviour of monomers, dimers and higher aggregates, respectively. The photosensitization results show that monomers and polymers produce singlet oxygen with very similar yields. Inclusion of Zn2+ and Cu2+ metal ions on deuteroporphyrin inhibits partially (factor 3) and totally the singlet oxygen production. [less ▲]

Mechanism for the Appearance of H+ by Electroionization of CH4. A Surprisal Analysis.

in Chemical Physics (1986), 102

Previous experimental results on the threshold energy and on the energy range of the first wide translational energy distribution of H+, resulting from the electron impact on CH4, are interpreted. The ... [more ▼]

Previous experimental results on the threshold energy and on the energy range of the first wide translational energy distribution of H+, resulting from the electron impact on CH4, are interpreted. The translational energy surprisal of this distribution has been evaluated with respect to a statistically calculated one. The surprisal plot shows a fourth power dependence on fT with a negative slope associated with a large DeltaS/exc value of about 4 eu. An "a priori" calculated P(ET/E) distribution, including four constraints, fits fairly well the observed translational energy distribution. [less ▲]

Influence de la cellule folliculaire dendritique sur la survie des lymphocytes in vitro.

in Comptes Rendus des Séances de la Société de Biologie et de ses Filiales (1986), 180(2), 218-23

To study the role of follicular dendritic cells (FDC) in germinal centers, we tried to keep them alive in vitro by culturing entire lymphoid follicles. Ultrastructural studies of those cultures in ... [more ▼]

To study the role of follicular dendritic cells (FDC) in germinal centers, we tried to keep them alive in vitro by culturing entire lymphoid follicles. Ultrastructural studies of those cultures in different conditions of culture technique, medium and temperature have been made. In any considered conditions living FDC were not found in the cultures after the 7th day. But during that period, only lymphocytes in close contact with the cytoplasmic processes of FDC survived. FDC seem thus to exert a positive action on lymphocyte survival in vitro. Moreover, FDC and lymphocytes appeared associated in situ in clusters similar to those obtained after isolation of FDC (Lilet-Leclercq et al., J. Immunol. Meth., 1984, 59, 235). [less ▲]

Effects of cis-diamminedichloroplatinum (II) loaded liposomes on mouse Ehrlich tumor cells.

in European Journal of Cancer & Clinical Oncology (1986), 22(10), 1139-47

Cis-diamminedichloroplatinum II (cisplatin) heavily or lightly loaded (fluid, solid, negatively charged or neutral) liposomes were prepared. Cisplatin release from liposomes was observed only after long ... [more ▼]

Cis-diamminedichloroplatinum II (cisplatin) heavily or lightly loaded (fluid, solid, negatively charged or neutral) liposomes were prepared. Cisplatin release from liposomes was observed only after long dialysis times or after liver lysosomal enzymatic disintegration in solution. Mouse Ehrlich tumor cells (ELT) cultured in vitro were treated with cisplatin, liposomes or cisplatin loaded liposomes, and the effects on the mitotic activity, the DNA content and the ultrastructure were compared. Cisplatin (1-10 micrograms/ml) had an antimitotic activity and modified the DNA content in ELT cells. Ribosome aggregation, perichromatin or interchromatin granule accumulation, and chromatin condensation or some degree of dispersion could be observed. Negatively charged fluid liposomes had an antimitotic activity and modified the DNA content in ELT cells at lower concentrations (0.3 mumoles/ml) than in the case of neutral fluid liposomes (1.5 mumoles/ml). Negatively charged solid liposomes were not toxic at these concentrations. Ultrastructural analysis of ELT cells treated in vitro with negatively charged fluid liposomes revealed their extracellular adsorption and their disintegration in phagolysosomes. A fusion between liposomes and the plasma membrane was not definitely demonstrated. Cisplatin loaded liposomes also had an antimitotic activity and modified the DNA content in ELT cells. These effects were similar to or more pronounced than those induced by free cisplatin. Ultrastructural analysis revealed some kind of electron dense material in phagolysosomes which was never observed after the treatment with free cisplatin or liposomes alone. Effects on nucleic acids were rarely observed. [less ▲]

Exercer la capacité des futurs maîtres à prendre des décisions en cours d'enseignement: Une nouvelle perspective de formation des maîtres ?

in Education : tribune libre (1986), 203

Compléments à l’Inventaire analytique des papyrus grecs de médecine

in Zeitschrift für Papyrologie und Epigraphik (1986), 65

Phenotype of thymic lymphomas in the mouse.

in Leukemia Research (1986), 10(7), 777-82

The MP2 cell line was established from a murine leukemia virus-induced thymic lymphoma. Half of the cells were consistently L3T4 positive and less than 5% of the cells were Lyt-2 positive. Single cell ... [more ▼]

The MP2 cell line was established from a murine leukemia virus-induced thymic lymphoma. Half of the cells were consistently L3T4 positive and less than 5% of the cells were Lyt-2 positive. Single cell cloning on the basis of the presence or absence of Lyt-2 allowed the isolation of four clones with stable phenotypes: (1) Lyt-2-, L3T4-; (2) Lyt-2+, L3T4+; (3) Lyt-2-, L3T4+; (4) Lyt2+, L3T4-. These data are discussed in relation to tumour cell heterogeneity and to normal T-cell differentiation pathways. [less ▲]

Pour s'y retrouver dans les prépositions

in Liège Université (1986), 57

Utilitation des nodules océaniques polymétalliques en hydrotraitement des coupes pétrolières lourdes avant leur valorisation métallurgique

in L'industrie minérale - Mines et Carrières - Les techniques (1986), 68

Study of the texture of monodisperse silica sphere samples in the nano size range

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (1986), 19

Dynamic multilevel filtering for real-time estimation of electric power systems

in Control, Theory and Advanced Technology (1986), 2(2), 255-272

Hémorragies sub-épendymaires et intraventriculaires chez le prémature eutrophique de 34 semaines de gestation et moins

in Revue Médicale de Liège (1986), 41

Insulin oscillations per se do not affect glucose turnover parameters in normal man.

in Journal of Clinical Endocrinology and Metabolism (1986), 63(2), 520-5

To compare the metabolic effects of pulsatile vs. continuous iv insulin infusion, normal men had two glucose-controlled iv glucose infusions using the Biostator for 260 min, during which endogenous ... [more ▼]

To compare the metabolic effects of pulsatile vs. continuous iv insulin infusion, normal men had two glucose-controlled iv glucose infusions using the Biostator for 260 min, during which endogenous pancreatic hormone secretion was inhibited by a somatostatin infusion and glucagon was replaced by continuous glucagon infusion. The two tests were performed at 1-week intervals, during which human insulin was infused either continuously at a constant rate of 0.2 mU kg-1 min-1 or in a pulsatile manner at a rate of 1.3 mU kg-1 min-1 with a switching on/off length of 2/11 min. Blood glucose levels and glucose infusion rates (GIR) were continuously monitored, and glucose turnover was estimated using a [3H]glucose infusion. In both tests, plasma C-peptide dropped markedly, whereas plasma glucagon levels were about twice basal values. Plasma insulin averaged 7 mU liter-1 during continuous infusion and oscillated between 1.5 and 35 mU liter-1 during pulsatile delivery. During the first 30-60 min of both tests, the glucose appearance rate and endogenous glucose production (EGP) increased, resulting in moderate hyperglycemia, which completely suppressed GIR. During the last 65 min, EGP declined, while the glucose disappearance rate and the glucose MCR increased, so that GIR increased progressively to maintain the blood glucose clamped at about 5 mmol liter-1. During this period, no significant differences were found between the two modes of insulin administration for any of the parameters studied. Thus, continuous and pulsatile insulin iv infusion, resulting in physiological peripheral plasma insulin levels, altered the glucose turnover parameters equally, in particular inhibiting EGP, which was stimulated by glucagon during the first part of the study, and stimulating peripheral glucose uptake at the end of the study period. [less ▲]

Diuretic activity of torasemide and furosemide in chronic heart failure: a comparative double blind cross-over study.

in European Journal of Clinical Pharmacology (1986), 31 Suppl

The diuretic effects of torasemide and of furosemide were compared in a double blind cross-over study in 13 patients with stable chronic heart failure. Single doses of 10 mg and 20 mg of torasemide and of ... [more ▼]

The diuretic effects of torasemide and of furosemide were compared in a double blind cross-over study in 13 patients with stable chronic heart failure. Single doses of 10 mg and 20 mg of torasemide and of 40 mg of furosemide were given orally, in a randomized order on 3 consecutive days. In addition, a placebo was administered on the day preceding the 3 active drug treatment days to obtain control data. Each experimental day was divided into three urine collection periods - 0 to 4 h, 4 to 12 h and 12 to 24 h. Urine output, ion excretion and clearance were measured during each of the 3 periods as well as for the 24-h period. Torasemide 20 mg was distinctly more active in each of the 3 collection periods and in the 24-h period than furosemide 40 mg, whereas no significant difference was found between furosemide 40 mg and torasemide 10 mg for most of the experimental data. From 0 to 4 h, both torasemide and furosemide significantly increased the urinary flow rate and the urinary excretion of sodium, chloride and calcium, while they decreased the urinary osmolality when compared to placebo. All the effects persisted in the 4 to 12 h period after torasemide 20 mg in contrast to furosemide, whose effects were limited to the 0 to 4 h period. In the third period (12-24 h), the urine volume fell below the placebo value after furosemide but not torasemide, and only torasemide 20 mg was followed by a persistent decrease in the urine osmolality.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

Les prestations des salariés en heures supplémentaires. Résultats d'une enquête.

in Cahiers Economiques de Bruxelles (1986), (112), 109-125

Les méningites bactérienne de l'enfant: diagnostic, traitement et pronostic

in Revue Médicale de Liège (1986), 41(19), 713-733

An Algorithm for Distributed Computation of FFT’s

in Computers & Electrical Engineering (1986), 13(2), 83-96

Aperçu de l'évolution des populations de blaireaux (Meles meles) en Wallonie au cours de la période 1982/1985

in Cahiers d'Ethologie (1986), 6(4), 359-372

Since 1982 the gassing of fox earths (the main threat for the badger survival in Belgium) ceased but southern Belgium was also affected by a new outbreak of the rabies epizooty. In such circumstances it ... [more ▼]

Since 1982 the gassing of fox earths (the main threat for the badger survival in Belgium) ceased but southern Belgium was also affected by a new outbreak of the rabies epizooty. In such circumstances it appeared interesting to renew the census of occupied badger dens we made previously. The situation we observed in 1985 is nearly the same as in 1981/82. In the middle of the "rabies zone" however badgers settled again in old dens uninhabited for many years because of gassing. This trend is nevertheless counterbalanced dy the disaooearance of badgers from other sites due to snaring, trapping, digging up or plugging the earth's mouths, to human disturbance (namely clear felling) or eventually to rabies itself. The authors finally emphasize the need for a strict enforcement of the new hunting legal dispositions and for the adoption of non detrimental to badgers and effective measures against rabies (f.e. oral vaccination of foxes). [less ▲]

La démarche de l'informatisation d'une exploitation fruitière

in Fruit Belge (1986), 54(416), 248-250

Quelques considérations chiffrées sur la forêt feuillue wallonne.

in Annales de Gembloux (1986), 92(2), 111-125

The immunochemical determinations of serum lipase in acute pancreatitis: further results.

in Clinical Chemistry (1986), 32(10), 1987

Deconvolution of time-varying systems by Kalman filtering, its application to the computation of the active state in the muscle

in Signal Processing (1986), 10

C3b receptor (CR1) on erythrocytes and the HLA-DR3 antigen

in Arthritis and Rheumatism (1986), 29(2), 300-301

Endocrine regulation of postpartum ovarian activity in cattle: a review.

in Reproduction Nutrition Development (1986), 26(6), 1219-1239

The problem of postpartum anoestrus is a real one because it results in prolongation of the time between calvings. The interval between the calving and resumption of cyclic ovarian activity depends on ... [more ▼]

The problem of postpartum anoestrus is a real one because it results in prolongation of the time between calvings. The interval between the calving and resumption of cyclic ovarian activity depends on several factors, i.e., amount of feeding before and after parturition, level of milk yield, age of the animal, calving difficulty, presence of a bull in the herd, season and its photoperiodism and particularly the suckling or lactating status of the cow. The anoestrus period is longer in suckled cows (30 to 110 days) than in milked cattle (20 to 70 days). The physiology of the hypothalamic-pituitary-ovarian axis is still far from clear. Nevertheless, some events are very well demonstrated. The pulsatile release of LH and GnRH and the pituitary sensitivity to GnRH increase gradually after calving. They are inhibited by suckling, which acts more on LH and GnRH release than on their synthesis. Suckling or the presence of a calf can exercise its action via oestrogens. Suckling inhibits oestrogen synthesis by follicular cells and diminishes their feed-back positive effect on the hypothalamic-pituitary axis. The suckling effect depends on oestrogen concentrations and on time after calving. The progressive LH release induces the synthesis of progesterone. After calving, the first luteal phase is shorter and the progesterone plasma concentrations are lower than what is observed during a normal cycle. Amongst some hypotheses proposed, premature luteolysis induced by uterine prostaglandins offers a new and very interesting field of research related to the utero-ovarian relationship after calving. The effects of FSH, prolactin and glucocorticoids hormones are much less understood. [less ▲]

Localisation des séquences régulatrices de la transcription. Application aux gènes de la famille prolactine.

in Annales d'Endocrinologie (1986), 47

We are studying nucleotide sequences responsible for the regulation of eukaryotic gene expression. Our test system comprises the human genes coding for prolactin (hPRL), growth hormone (hGH-N) and ... [more ▼]

We are studying nucleotide sequences responsible for the regulation of eukaryotic gene expression. Our test system comprises the human genes coding for prolactin (hPRL), growth hormone (hGH-N) and placental lactogen (hCS-B). We have cloned these genes and are searching within their sequences for in vitro binding sites of the human glucocorticoid receptor on the hGH-N and hCS-B genes; the in vivo activity of such DNA sequences by assaying hybrid gene expression in transfected cells; in vivo "enhancer" activity of different hPRL gene fragments linked to a marker gene and transfected in cultured cells. [less ▲]

Prediction of strain for intermittent heat exposures

in Ergonomics (1986), 29(7), 913-23

Régulations de l'expression des gênes de la prolactine et de l'hormone de croissance dans des cellules hypophysaires en culture

in Annales d'Endocrinologie (1986), 47(1), 22-7

The rat pituitary tumor derived cell lines of the "GH" family offer a fruitful model for studying the expressions of the prolactin (rPRL) and growth hormone (rGH) genes in basic and regulated states. In ... [more ▼]

The rat pituitary tumor derived cell lines of the "GH" family offer a fruitful model for studying the expressions of the prolactin (rPRL) and growth hormone (rGH) genes in basic and regulated states. In order to assess the potential role of DNA methylation in the basic expressions of rPRL and rGH genes we have used different cell strains which produce either high level of rPRL (GH3B6 cells) or of rGH (GC cells) and minute amounts of both hormones (GH3CDL cells). The cleavage patterns generated by the methylation sensitive enzymes Hpa II and Msp I indicated an inverse correlation between the extent of gene methylation and the level of expression. However the use of 5-azacytidine which decreases DNA methylation suggested a variable importance of gene methylation in the respective control of rPRL and rGH genes depending on the cell lines. In an other hand we attempted to elucidate some of the mechanisms by which thyroliberin (TRH) enhances rPRL gene transcription in GH3B6 cells. Preliminary results indicated that the persistent occupancy of the TRH receptors was required to sustain at least for the first 5 hours the increased rate of rPRL gene transcription. In addition the possible relationship between the TRH-induced acute rPRL release and the stimulation of rPRL gene transcription was investigated. The results suggested that the activators of the C kinase-mediated pathway which are actually involved in the stimulation of the acute release were not sufficient alone for eliciting the maximum TRH response at the gene level. [less ▲]

Prostaglandin E2, prostacyclin, and thromboxane changes during nonpulsatile cardiopulmonary bypass in humans.

in Journal of Thoracic and Cardiovascular Surgery (The) (1986), 91(6), 858-66

To study the effect of lung bypass on the production of prostaglandin E2, prostacyclin, and thromboxane A2, we measured simultaneously arterial and venous plasma concentrations of prostaglandin E2, 6-keto ... [more ▼]

To study the effect of lung bypass on the production of prostaglandin E2, prostacyclin, and thromboxane A2, we measured simultaneously arterial and venous plasma concentrations of prostaglandin E2, 6-keto-prostaglandin F1 alpha (stable metabolite of prostacyclin), and thromboxane B2 (stable metabolite of thromboxane A2) before, during, and after cardiopulmonary bypass. Seventeen patients (age range 46 to 69 years) undergoing aorta-coronary bypass grafts were investigated. The prostaglandin E2 production rose sharply immediately after the onset of bypass (baseline: 9.7 +/- 2.9 pg/ml to 85 +/- 16.6 pg/ml in venous and 87 +/- 12 pg/ml in arterial plasma, p less than 0.03) and rapidly decreased after pulmonary reperfusion (53 +/- 6.4 and 57 +/- 20 pg/ml, respectively, in venous and arterial plasma at the end of bypass). The increase in prostaglandin E2 was influenced by the heart-lung machine itself (as demonstrated by a closed "bypass" circuit) and by lung bypass. Pulmonary metabolism of prostaglandin E2 was maintained after bypass. The prostacyclin production rose significantly at the beginning of bypass (154 +/- 26 pg/ml venous prebypass level to 361 +/- 94 pg/ml after aortic clamping, p less than 0.03). Prostacyclin decreased progressively during rewarming of the patient, pulmonary reperfusion, and discontinuation of bypass. When prostacyclin decreased, thromboxane B2 production rose significantly and reached peak arterial levels when the lungs were reperfused (112 +/- 33 pg/ml prebypass levels to 402 +/- 101 pg/ml, p less than 0.01). Except for prostaglandin E2, there were no significant differences between arterial and venous plasma levels of these substances. The same prostanoids were also measured in five patients undergoing major orthopedic operations, and no significant changes in prostanoids were observed. Our data demonstrate significant production of prostaglandin E2 in the systemic circulation during cardiopulmonary bypass in humans. They further indicate that lung bypass disturbs the plasma prostaglandin/thromboxane balance. [less ▲]

La fonction neuroendocrinienne du thymus

in Revue Médicale de Liège (1986), XLI

De la narratologie à la technique narrative

in Enjeux : Revue de Formation Continuée et de Didactique du Français (1986), 12

Relations entre différents types de volumes en peuplements de hêtres (Fagus sylvatica L.)

in Annales des Sciences Forestières (1986), 43(1), 49-56

A stand volume table which provides the volume to a top girth limit of 22 cm has been rencently constructed (TOUSSAINT et al., 1983) for stands of beech (Fagus sylvatica L.) located in the southern part ... [more ▼]

A stand volume table which provides the volume to a top girth limit of 22 cm has been rencently constructed (TOUSSAINT et al., 1983) for stands of beech (Fagus sylvatica L.) located in the southern part of Belgium. The ratios between volumes to various fixed girth and volumes to a top girth limit of 22 cm have been estimated in relation with the girth of the mean basal area tree of the stands. The proposed method is a useful complement to traditional stand volume tables in order to estimate commercial volumes. [less ▲]

Multiple peroxysomal deficiency syndromes: a comparative and multidisciplinary study in Zellweger and Neonatal Adrenoleukodystrophy patients

in American Journal of Pathology (1986), 125

Quand faut-il traiter une hypertension artérielle légère?

in Médecine et Hygiène (1986), 44

La décision de traiter des sujets dont la pression artérielle (PA) dépasse 170/105 mmHg ne se discute plus. En effet, les bénéfices sur le plan cardiovasculaire retirés de l'abaissement tensionnel ... [more ▼]

La décision de traiter des sujets dont la pression artérielle (PA) dépasse 170/105 mmHg ne se discute plus. En effet, les bénéfices sur le plan cardiovasculaire retirés de l'abaissement tensionnel contrebalancent de loin la contrainte et les effets secondaires inhérents au traitement. Par contre, pour des PA se situant entre cette limite supérieure et 140/90 mmHg, les bénéfices globaux d'un traitement antihypertenseur sont maigres, à la lumière de vastes études épidémiologiques. Il ressort en effet que pour ce type d'hypertension (HTA) légère, la plus fréquemment rencontrée, sans répercussion systémique, on puisse postposer de quelques mois le début d'un traitement médicamenteux pour confirmer l'élévation de PA. Pendant cette période, des règles hygiéno-diététiques sont proposées et des contrôles tensionnels réguliers sont réalisés. A la fin de cette période, ceux dont la PA systolique demeure supérieure ou égale à 100 mmHg tireront avantage du traitement; par contre, pour ceux dont la PA diastolique se situe entre 90 et 99 mmHg, aucun consensus n'a pu être obtenu. Pour ce type de patients, il apparaît nécessaire d'établir un profil de risque cardiovasculaire pour sélectionner ceux qui tireront un réel bénéfice du traitement pharmacologique. [less ▲]

Further investigation of the pair of quasars Q0107 - 025 A and B

in Astronomy and Astrophysics (1986), 161

Low and intermediate dispersion spectroscopy of Q0107 - 025 A and B obtained at ESO, AAT, and MMT provide evidence for spectral differences between these two quasars. A redshift difference of 0.004 is ... [more ▼]

Low and intermediate dispersion spectroscopy of Q0107 - 025 A and B obtained at ESO, AAT, and MMT provide evidence for spectral differences between these two quasars. A redshift difference of 0.004 is found between the two objects, and forbidden emission lines due to O II (3727 A), Ne III (1815), and possibly Ne V (3426 A), are seen in the spectrum of Q0107 - 025 A, while only the forbidden Ne III line at 1815 A is possibly detected in the spectdrum of Q0107 - 025 B. No narrow absorption lines could be detected in the 3252 - 5616 A spectral range of the intermediate resolution data of either quasar, and the spectrum of quasar B is found to be steeper in the blue that of the quasar A. The possible presence of a highly redshifted cluster of galaxies in the field of these quasars is suggested by CCD photometry. [less ▲]

Aspects electrocinetiques lors de l'immobilisation de la beta-galactosidase sur un support solide.

in Lebensmittel-Wissenschaft & -Technologie = Food Science & Technology (1986), 19(1),

Diamine oxidase in Serum and Small Intestinal Biopsy Tissue in Childhood Celiac Disease

in Journal of Pediatric Gastroenterology and Nutrition (1986), 5

A relationship between disaccharidase and diamine oxidase (DAO) activities was looked for by measuring these enzyme activities in histologically normal small intestinal biopsies of 18 children. The range ... [more ▼]

A relationship between disaccharidase and diamine oxidase (DAO) activities was looked for by measuring these enzyme activities in histologically normal small intestinal biopsies of 18 children. The range for disaccharidase activities expressed in U g-1 wet weight was 0.1-5.7, 7.1-36.7, and 2.3-8.5 for lactase, maltase, and sucrase, respectively. The range for DAO activities expressed in nmol h-1 g-1 wet weight was 202-974. Significant correlations were found between disaccharidase and DAO activities (lactase versus DAO: n = 17, r = 0.80, P < 0.001; maltase versus DAO: n = 18, r = 0.70, P < 0.001; sucrase versus DAO: n = 18, r = 0.55, P < 0.05). Our results further support the hypothesis that DAO is a marker of small intestinal functional integrity in children. [less ▲]

The role of nitric oxide on thermospheric dynamics and composition : solar minimum activity conditions

in Planetary and Space Science (1986), 34

Pour une lecture institutionnelle du Manifeste du surréalisme

in Mélusine. Cahiers du Centre de recherches sur le surréalisme (1986), VIII

Biostratigraphie par spores du Dévonien Ardenno-Rhénan.

in Annales de la Société Géologique du Nord (1986), CV

Traitement et pronostic des medullopathies par cervicarthrose.

in Revue Médicale de Liège (1986), 41(9), 377-83

Alternativas para la utilization de sustratos ligno-cellulosicas : Hydrolisis acida o enzimatica de la celulosa.

in Interferon y Biotechnologia (1986), 3(2), 87-102

Ultrastructural study of the relationships between the various nucleolar components in Ehrlich tumour and HEp-2 cell nucleoli after acetylation.

in Experimental Cell Research (1986), 164(1), 232-42

In the present study, we analysed the relationships between various nucleolar components in Ehrlich tumour and HEp-2 cells, using acetylation. Under these conditions, we found contacts between the ... [more ▼]

In the present study, we analysed the relationships between various nucleolar components in Ehrlich tumour and HEp-2 cells, using acetylation. Under these conditions, we found contacts between the condensed intranucleolar chromatin and the fibrillar centre, illustrating the continuity between the DNA present inside the fibrillar centre and that of condensed associated chromatin. We also found that although the dense fibrillar component is usually situated at the periphery of the fibrillar centre, it is sometimes found inside the centre. On the other hand, the layer of dense fibrils bordering the fibrillar centre is interrupted by nucleolar interstices. In addition, in HEp-2 cell nucleoli with a reticulated appearance, the numerous small fibrillar centres are bound together by strands of dense fibrillar component. These observations are discussed in terms of relationships between nucleolar ultrastructure and function(s). [less ▲]