Obstetrics in small hospitals

in Lancet (1985), 2

Laminin promotes cerebellar granule cells migration in vitro and is synthesized by cultured astrocytes

in Developmental Neuroscience (1985), 7(5-6), 278-285

Newborn rat cerebellum microexplants have been used as a model to study neuronal migration. Laminin in a substrate-bound form modifies extensively the migratory behavior of the neurones, an effect which ... [more ▼]

Newborn rat cerebellum microexplants have been used as a model to study neuronal migration. Laminin in a substrate-bound form modifies extensively the migratory behavior of the neurones, an effect which is blocked if antilaminin antibodies are present during the assay. 35S methionine incorporation followed by SDS-PAGE electrophoresis, fluorography and immunoprecipitation with antilaminin antibodies allowed to demonstrate that laminin is synthesized and secreted by cultured newborn rat cerebellum as well as by cultured newborn rat cerebral cortex astrocytes. [less ▲]

Situation critique de populations nicheuses de martin pêcheur (Alcedo atthis) après le rude hiver 1984/1985

in Aves (1985), 22(4), 257-264

A census and checking of known nesting sites of the kingfisher were carried out on the Meuse and various watercourses in the south west of the Walloon region during the spring of 1985. This one followed ... [more ▼]

A census and checking of known nesting sites of the kingfisher were carried out on the Meuse and various watercourses in the south west of the Walloon region during the spring of 1985. This one followed an exceptionnally harsh winter, which was separated from the former harsh winter (1978/79) by five successive bad reproduction seasons (rainy summer 1980, cold spring 1981, humid spring 1982/83/84. Only 10% of the potential sites were occuried, but the survival rate was excellent (7.3 young fledged per adult nesting bird), thanks to an unusual number of third broods, probably in consequence of low intraspecific competition. These third broods were all reared by pairs fishing in the river Meuse itself, a fact that stresses the importance of this river forthe survival of the speies concerned, and pleads for the protection of the few favourable sites still in existence. [less ▲]

Les Fouronnais imaginaires

in Etudes et recherches (1985), (n°33), 36

On the correlation between oxygen uptake in plastids of greening etiolated oat leaves and pigment photooxidation

in Zeitschrift für Naturforschung. Section C : Biosciences (1985), 40c

The ultraviolet spectrum of the Be star HD 50138

in Astronomy and Astrophysics. Supplement Series (1985), 60

The ultraviolet spectrum of the B8 Ve star HD 50138, recorded during the December 1978-January 1982 period with IUE, is analyzed. The spectrum is found to be crowded by absorption lines, mostly those of ... [more ▼]

The ultraviolet spectrum of the B8 Ve star HD 50138, recorded during the December 1978-January 1982 period with IUE, is analyzed. The spectrum is found to be crowded by absorption lines, mostly those of singly ionized iron peak elements. In addition there are broad lines essentially due to superionized species (Si IV, C IV) and a P Cygni profile for the Mg II doublet, similar to that seen in the star AB Aur. A few Fe II emission lines are also detected. The slowly expanding envelope surrounding HD 50138 appears to be decelerated outward with a decreasing ionization. The physical state of this envelope seems to suffer strong variations: a double structure was detected for some of the absorption lines in 1978-1979, and is interpreted as due to an outburst. A net increase of the excitation in 1980 is also observed and vanishes in 1982. In order to explain the unusual profiles of the Mg II lines, a possible fluorescence mechanism driven by Ly-beta is discussed. An accurate list of line identification is also provided. [less ▲]

Le mur dans l'art et l'archéologie

in Art&fact (1985), 4

Insulin-stimulated glucose disposal is not increased in anorexia nervosa.

in Journal of Clinical Endocrinology and Metabolism (1985), 60(2), 311-4

Insulin-stimulated glucose disposal was investigated using the euglycemic hyperinsulinemic glucose clamp technique in six women with anorexia nervosa (27.3 +/- 4.9 yr old; weight, 38.8 +/- 6.6 kg) and ... [more ▼]

Insulin-stimulated glucose disposal was investigated using the euglycemic hyperinsulinemic glucose clamp technique in six women with anorexia nervosa (27.3 +/- 4.9 yr old; weight, 38.8 +/- 6.6 kg) and compared to results obtained in six normal women (22.6 +/- 1.2 yr old; weight, 58 +/- 2.5 kg) and seven obese women (26.8 +/- 7.7 yr old; weight, 92.5 +/- 13.8 kg). The glucose clamp was performed for 2 h using the Biostator and a continuous insulin infusion of 100 mU kg-1 h-1. Plasma levels of insulin were determined at 30-min intervals. Plasma levels of glucagon, FFA, glycerol, 3-hydroxy-butyrate, and alanine were measured basally. Blood glucose levels were similar in normal subjects and anorectic patients; they were slightly but significantly higher in the obese patients. The indices of insulin sensitivity measured were the MCR of glucose and the ratio of glucose infused to insulin infused (G/I). They were very similar in anorectic subjects [MCR, 13.5 +/- 2.4 (+/- SEM) ml kg-1 min-1; G/I, 5.2 +/- 0.9 mg/mU) and normal subjects (MCR, 13.5 +/- 1.7 ml kg-1 min-1; G/I, 5.2 +/- 0.4 mg/mU), but were significantly reduced in obese patients (MCR, 5.1 +/- 0.8 ml kg-1 min-1; G/I, 2.6 +/- 0.3 mg/mU; P less than 0.0025). Differences in plasma insulin among the three groups were not statistically significant. Plasma alanine levels were higher in anorectic than in normal or obese subjects, suggesting defective gluconeogenesis. Thus, insulin-stimulated glucose disposal is normal in patients with anorexia nervosa, a finding that contrasts with the previously reported increase in erythrocyte insulin receptors in this disease. [less ▲]

The Effects of Workers’ Participation on Enterprise Performance: Empirical Evidence from French Producer Co-operatives

in International Journal of Industrial Organization (1985), 3(2), 197-218

The results of estimating production functions augmented by various measures of workers' participation on a large enterprise level data set of French cooperatives are reported. Value added is found to be ... [more ▼]

The results of estimating production functions augmented by various measures of workers' participation on a large enterprise level data set of French cooperatives are reported. Value added is found to be an increasing function of participation in profits, in collective membership and in ownership, even when a wide assortment of enterprise specific and environmental factors are taken into account. This finding is very robust, surviving tests between alternative specifications of technology, for reverse causality, for simultaneous equation bias and for multicollinearity. The typical productivity effect from participation, however, is small, around 5% of output. The results suggest that Western policymakers should investigate ways to increase workers' participation in capital stakes and profit shares. [less ▲]

A Real Challenge: The minimums of V348 Sgr

in Bulletin de l'Association Francaise d'Observateurs d'Etoiles Variables (1985), 33

Not Available

Effect of dexamethasone on the mean plaque size of bovine herpesvirus 1.

in Annales de Recherches Vétérinaires = Annals of Veterinary Research (1985), 16(1), 80-5

The effect of dexamethasone on infectious bovine rhinotracheitis virus (Bovine herpesvirus 1: BHV 1) was studied by measuring the mean plaque size produced by eight virus strains under two concentrations ... [more ▼]

The effect of dexamethasone on infectious bovine rhinotracheitis virus (Bovine herpesvirus 1: BHV 1) was studied by measuring the mean plaque size produced by eight virus strains under two concentrations of dexamethasone phosphate (0.1 and 1 mM). Dexamethasone induced a significant reduction of the mean plaque size, whatever the strain used. Some differences were noted between the BHV 1 strains studied, depending on the dexamethasone concentration. [less ▲]

Inability of any Hartree-Fock approximation to reproduce simultaneously the density and momentum distributions of nuclei

in Physics Letters B (1985), 158

Release of human neurophysin I during insulin-induced hypoglycemia is abolished after recovery with clomipramine treatment

in Psychoneuroendocrinology (1985), 10

Apport de la neurophysiologie clinique à l'évaluation et à la physiopathologie de la maladie de Parkinson.

in Revue Neurologique (1985), 141(12), 759-73

Clinical Neurophysiology brings about 2 major contributions in the study of Parkinson's disease: on the one hand, it makes it possible to measure the motor troubles; on the other, it enables their ... [more ▼]

Clinical Neurophysiology brings about 2 major contributions in the study of Parkinson's disease: on the one hand, it makes it possible to measure the motor troubles; on the other, it enables their pathophysiological analysis. The 3 classical signs must be studied separately. Tremor can easily be recorded by electromyography. Moreover, its parkinsonian nature can be specified by studying the resetting of EMG bursts following electrical stimulation of the motor nerve. A pace maker has been demonstrated in the thalamus from where rhythmic messages are first sent to motor cortex and thereafter reverberated to spinal motoneurons. Rigidity can be assessed by sophisticated but not generalized methods. It is easier to evaluate it by long-loop responses evoked by proprioceptive or exteroceptive stimulations. These responses reflect activity in pathways relaying in supraspinal structures. Contrary to spasticity, rigidity is not basically due to dysfunctions in segmentary spinal circuits. It is more likely that it depends on hyperactive and hyperexcitable long loop pathways. This hypothesis is in agreement with well established facts showing that parkinsonian hypertonia vanishes after dorsal root section. Akinesia is complex semeiologically. It is made of various components some of which can be measured. Reaction times and movement times provide interesting data which however are not strictly correlated with the motor handicap. Motor programmes are assembled in normal delays but they are not "called upon" correctly, reflecting a disturbance in the motor planning. A lack of "energetization" of the motor cortex and the pyramidal tract is likely. A functional disconnection between the motor program/plan side and the execution side can be hypothesized to explain the 3 major signs; on the one hand, neural messages are not correctly transferred to the pyramidal system, on the other, spinoencephalospinal loops on the execution side become more active as they escape from the control normally exerted by the plan/program side where basal ganglia play a prominent role. [less ▲]

Methode d'estimation rapide des volumes par categories de grosseur en peuplements d'epicea (Picea abies Karst).

in Annales des Sciences Forestieres (1985), 42(2), 185-192

Cette étude propose une méthode d’estimation rapide du volume à l’hectare total ou ventilé par catégories de grosseur commerciales pour des peuplements d’épicéa (Picea abies KARST) situés dans la partie ... [more ▼]

Cette étude propose une méthode d’estimation rapide du volume à l’hectare total ou ventilé par catégories de grosseur commerciales pour des peuplements d’épicéa (Picea abies KARST) situés dans la partie sud de la Belgique. L’analyse d’environ 1 800 unités d’échantillonnage a permis d’établir des relations satisfaisantes entre les proportions de volume bois fort tige correspondant à diverses catégories de grosseur et la circonférence de l’arbrc de surface terrière moyenne. [less ▲]

De Polleur à la Géronstère: vers la constitution d'une courbe dendrochronologique locale

in Histoire et archéologie spadoises (1985)

Relativistic nuclear model description of axial transitions 16O (0+<-> O-) 16N

in Physics Letters B (1985), 153

Short-, medium-, and long-term effects of prenatal oxazepam on neurobehavioural development of mice

in Psychopharmacology (1985), 87(4), 434-441

Oxazepam was given to nulliparous CD-1 mice on Days 12-26 of pregnancy, and the development and young adult behavior of the offspring were studied. Exp I, using 5, 15, and 50 mg/kg oral doses given twice ... [more ▼]

Oxazepam was given to nulliparous CD-1 mice on Days 12-26 of pregnancy, and the development and young adult behavior of the offspring were studied. Exp I, using 5, 15, and 50 mg/kg oral doses given twice daily, showed a dose-dependent retardation of postnatal development of several responses such as righting, barholding, limb placing, and auditory startle. These changes were maximal in the 1st 2 postnatal weeks and then were markedly attenuated, or disappeared, being apparently related to a temporary retardation of body growth. A reduction of locomotor activity at 60 days was found only in the 50 mg/kg group. In Exps II and III, prenatal oxazepam reduced open-field activity at 14-26 days and attenuated the hyperactivity induced by dl-amphetamine (d,l-amphetamine) sulfate (2 mg/kg, intraperitoneally). Exp III, using a cross-fostering procedure, showed that postnatal maternal effects were not responsible for the aforementioned changes. Exp II also investigated the acquisition of several go/no go avoidance discriminations. The main effect of prenatal oxazepam was an impairment of active avoidance responding, while the treatment effects on overall discrimination performance were less marked and limited to the later stages of training. (29 ref) ((c) 1997 APA/PsycINFO, all rights reserved) [less ▲]

Occultation detection of a Neptune ring segment

in LPI Contributions (1985), 559

Not Available

Mouse lymph node follicular dendritic cells: quantitative analysis and isolation.

in Advances in Experimental Medicine and Biology (1985), 186

The role of NADPH in the reversible phototransformation of chlorophyllide P682 into chlorophyllide P678 in etioplasts of oat

in Zeitschrift für Naturforschung. Section C : Biosciences (1985), 40c

Molecular cloning of bovine viral diarrhea viral sequences

in DNA (1985), 4(6), 429-38

Bovine viral diarrhea virus (BVDV) genomic RNA was identified as a 12.5-kb single-stranded RNA molecule in both infected bovine embryonic kidney cells (BEK-1) and partially purified virions. BVD virion ... [more ▼]

Bovine viral diarrhea virus (BVDV) genomic RNA was identified as a 12.5-kb single-stranded RNA molecule in both infected bovine embryonic kidney cells (BEK-1) and partially purified virions. BVD virion RNA was partially purified and used as a template for cDNA synthesis. BVDV-specific cDNA sequences were molecularly cloned and shown to hybridize to infected cell RNA but not to uninfected cell RNA or DNA. A single RNA species of 12.5 kb, representing the viral RNA genome, was detected in infected cells. A preliminary map of the BVDV specific cDNA clones was constructed and five major, nonoverlapping families were observed, accounting for approximately one-half of the viral genome. [less ▲]

5-Nucleotidase activity in isolated follicular dendritic cells.

in Immunology Letters (1985), 9(2-3), 75-80

Follicular dendritic cells isolated from mouse lymph nodes were incubated in the presence of AMP to test 5-nucleotidase (5-Nase) activity. Ultrastructural observations showed the presence of 5-Nase on ... [more ▼]

Follicular dendritic cells isolated from mouse lymph nodes were incubated in the presence of AMP to test 5-nucleotidase (5-Nase) activity. Ultrastructural observations showed the presence of 5-Nase on external membranes but also some activity inside the nucleus. 5-Nase was found associated to Fc receptors labelled with homologous immunoglobulins fixed on colloidal gold particles. Lymphocytes and macrophages, found in association with the follicular dendritic cells, were either 5-Nase positive or negative. The hypothetical roles played by 5-Nase in germinal centers are discussed. [less ▲]

Antigen/antibody retention by follicular dendritic cells (FDC).

in Advances in Experimental Medicine and Biology (1985), 186

Hydrotreatment of petroleum atmospheric residua using oceanic polymetallic nodules in trickle bed reactor

in Bulletin des Sociétés Chimiques Belges (1985), 94

Entre Narcisse et Pygmalion : la communauté émotionnelle surréaliste

in Mélusine. Cahiers du Centre de recherches sur le surréalisme (1985), VII

De la réduction des luxations de la mâchoire : précédents antiques à la manoeuvre de Nélaton

in Revue Médicale de Liège (1985), 40(3), 105-108

Modèle de l'influence des parois sur la chromaticité du rayonnement lumineux en espace clos

in Lux (1985), 133

The action of exogenous abscisic and gibberellic acids on gene expression in germinating castor beans

in Planta (1985), 165

The use of numerical models for the fire analysis of reinforced concrete and composite structures

in Engineering Analysis (1985), 2

This paper axplains how the fibre model is used in the thermal and in the mechan ical analysis to determine the fire resistance of reinforced concrete and composite steel-concrete beam elements with the ... [more ▼]

This paper axplains how the fibre model is used in the thermal and in the mechan ical analysis to determine the fire resistance of reinforced concrete and composite steel-concrete beam elements with the numerical software CEFICOSS [less ▲]

Collagens, laminin, fibronectin, and cytoskeletal composition of cells in syngeneic aortal vein grafts in the rat.

in Research in Experimental Medicine (1985), 185(5), 355-66

The supradiaphragmatic vena cava of the rat was transplanted to the abdominal aorta in syngeneic recipients. The cells and the connective tissue matrix of these grafts were studied 3 days to 12 weeks ... [more ▼]

The supradiaphragmatic vena cava of the rat was transplanted to the abdominal aorta in syngeneic recipients. The cells and the connective tissue matrix of these grafts were studied 3 days to 12 weeks after transplantation by immunofluorescence staining of the cytoskeletal proteins desmin, vimentin, and myosin. The matrix proteins, collagen Types I and III, laminin, fibronectin, and fibrin(ogen) were similarly demonstrated. Blood coagulation Factor VIII was used as a marker for endothelial cells. Inflammatory cells invaded the graft during Week 1, but later on the grafts were crowded with cells containing vimentin. Intimal thickenings developed already after 1 week. Smooth muscle cells containing desmin proliferated in these thickenings. After transplantation collagen Type I increased in the graft, but collagen Type III rather decreased. During the phase of intense proliferation of smooth muscle cells the media contained a rich matrix of diffusely distributed laminin. The laminin of older grafts was confined mostly to the subintimal zone and to the intimal plaques. [less ▲]

Respiratory syncytial virus pneumonia in Friesian calves : physiological findings

in Research in Veterinary Science (1985), 39

Clinical, serological and physiological values were measured during and after naturally occurring respiratory syncytial virus pneumonia in four Friesian calves weighing between 120 and 160 kg. Clinical ... [more ▼]

Clinical, serological and physiological values were measured during and after naturally occurring respiratory syncytial virus pneumonia in four Friesian calves weighing between 120 and 160 kg. Clinical and serological findings were in agreement with the description of spontaneous calf pneumonia, associated with respiratory syncytial virus infection. Pulmonary function values, recorded one, eight, 15 and 57 days after the clinical onset of the disease, provided good evidence that the clinical syndrome associated with respiratory syncytial virus infection in Friesian cattle is at first an acute obstructive disease which is progressively replaced by a moderate subclinical restrictive disease. [less ▲]

Improvement in the results in sixty-four ulnar nerve sections associated with arterial repair.

in Journal of Hand Surgery (The) (1985), 10(6 Pt 2), 997-9

The denervated first dorsal interosseous muscle flap: a case report.

in Journal of Hand Surgery (The) (1985), 10(5), 684-6

Coverage of a dorsal defect on the hand of a child with exposed extensor tendons was provided by a denervated first dorsal interosseous muscle and splitthickness skin grafting. We do not recommend routine ... [more ▼]

Coverage of a dorsal defect on the hand of a child with exposed extensor tendons was provided by a denervated first dorsal interosseous muscle and splitthickness skin grafting. We do not recommend routine use of the first dorsal interosseous muscle as a flap; however, its use in cases in which the muscle has been denervated would seem justified. [less ▲]

De la connaissance du milieu karstique à sa gestion

in Annales de la Société Géologique de Belgique (1985)

Progress in rational use of karst and its proper management is influenced by the exchange of relevant information in all the concerned spheres. It is also dependant on the setting up of global projects ... [more ▼]

Progress in rational use of karst and its proper management is influenced by the exchange of relevant information in all the concerned spheres. It is also dependant on the setting up of global projects involving a systemic approach. Impact studies are presented as a positive means of finding long term solutions to the land management of karst areas. This of course can only be achieved if the authors of the impact studies are neither dependant on nor controlled by the developers of a specific project. [less ▲]

Règles de taxation et dotation communale: aspect normatif

in Bulletin de Documentation du Ministère des Finances (1985)

Dérivés phosphorylés de la thiamine et bioélectrogenèse

in Regards sur la biochimie (1985), 4

Le rôle des hiérothytes en Égypte

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1985), 60

Pathophysiologic study of 3-methylindole-induced pulmonary toxicosis in immature cattle

in American Journal of Veterinary Research (1985), 46(8), 1629-1631

In 5 Friesian calves given 3-methylindole (3-MI) (100 mg/kg once a week for 8 weeks, except calf 4, given a 50 mg/kg dose on weeks 3 to 8), pulmonary function (PF) values and arterial blood gas tensions ... [more ▼]

In 5 Friesian calves given 3-methylindole (3-MI) (100 mg/kg once a week for 8 weeks, except calf 4, given a 50 mg/kg dose on weeks 3 to 8), pulmonary function (PF) values and arterial blood gas tensions (PaO2 and PaCO2) were measured 24 hours after dosing was done and were correlated with clinical, biochemical, and pathologic changes. Three of the calves (No. 1, 2, and 3) showed acute respiratory distress syndrome 24 hours after the first 3-MI treatment, with a large increase in respiratory frequency, minute viscous work, and PaCO2 and a large decrease in tidal volume, dynamic lung compliance, and PaCO2. They died 36, 38, and 84 hours after dosing. Pulmonary function changes were compatible with the severe pulmonary edema and alveolar damage observed at necropsy. The 2 other calves, after they were given the 1st dose, showed only subacute respiratory distress syndrome with less severe changes in PF values recorded at 24 hours. Furthermore, they became progressively more tolerant to the 2nd, 3rd, and 4th weekly treatments, and showed base-line PF values after the 5th weekly treatment. Pathologic changes were not observed in lung biopsy material from these 2 animals at 2 and at 12 weeks after the 8th (or last) 3-MI treatment. [less ▲]

The effect of walls on colour rendering

in Lighting Research & Technology (1985), 17(3)

Stability and accuracy of the UVBY system

in Astronomy and Astrophysics (1984), 141

In order to evaluate the transformation errors for stars of various types and classes, the author has simulated observations made with standard and non-standard equipments. Large deviations which cannot ... [more ▼]

In order to evaluate the transformation errors for stars of various types and classes, the author has simulated observations made with standard and non-standard equipments. Large deviations which cannot be corrected are observed mainly for objects outside the range 0.0 < b-y < 0.4 and in the u filter. The rectangular passbands have many advantages however. They can be very stable and are accurately reproducible. Hence the problem of nontransformable outputs may not exist between such systems. Since many uvby observations are to be collected with such equipments, it could be advantageous to define a new standard "rectangular" uvby system along with the conventional one. [less ▲]

Dynamic Risk Assessment in Intensive Care: Development and Use

in Proceedings : Symposium on Computer Application in Medical Care (1984)

Les variations du champ magnétique de HD 32633

in Astronomy and Astrophysics (1984), 139

The magnetic-field measurements of HD 32633 by Borra and Landstreet (1980) are compared with the values of H[SUB]e[/SUB] measured by Babcock (mostly unpublished) and those published by Preston and StepieÅ ... [more ▼]

The magnetic-field measurements of HD 32633 by Borra and Landstreet (1980) are compared with the values of H[SUB]e[/SUB] measured by Babcock (mostly unpublished) and those published by Preston and StepieÅ (1968), in order to improve the value obtained for the period. The result is P = 6[SUP]d[/SUP].42998±0[SUP]d[/SUP].00012. As found previously (Renson, 1969) from Babcock's observations alone, the variation is highly anharmonic and asymmetric, the ascending part of the curve (from negative to positive values of H[SUB]e[/SUB]) being much steeper than the descending part. Moreover, in the descending part, there is at least one bump, which is also very difficult to explain within the framework of the models proposed up to now. [less ▲]

Dolichantoside, Main Alkaloid from Stem Bark of Strychnos Tricalysioides

in Planta Medica (1984), 50(5), 457-8

The bark of Strychnos tricalysioides from Cameroon has been studied. The main alkaloid (present in a minute amount) was identified to dolichantoside (TLC, UV, IR and CD) and compared to a reference ... [more ▼]

The bark of Strychnos tricalysioides from Cameroon has been studied. The main alkaloid (present in a minute amount) was identified to dolichantoside (TLC, UV, IR and CD) and compared to a reference compound previously isolated in our laboratory from Strychnos gossweileri root bark. [less ▲]

1984 N1

in International Astronomical Union Circulars [=IAUCs] (1984), 3968

IAUC 3968 available at Central Bureau for Astronomical Telegrams.

Appulse of SAO 186001 to Neptune

in International Astronomical Union Circulars [=IAUCs] (1984), 3962

IAUC 3962 available at Central Bureau for Astronomical Telegrams. IAUC 3962 available at Central Bureau for Astronomical Telegrams.

On the Photometric Variations of HD 28843 and HD 29009

in Information Bulletin on Variable Stars (1984), 2551

Not Available

Complications rénales de la polyarthrite rhumatoïde

in Revue Médicale de Liège (1984), 39(13-14), 549-560

A la suite de l'apparition de signes témoignant d'une pathologie rénale chez des sujets atteints de polyarthrite rhumatoïde, nous avons voulu refaire le point sur ce type non exceptionnel de complication ... [more ▼]

A la suite de l'apparition de signes témoignant d'une pathologie rénale chez des sujets atteints de polyarthrite rhumatoïde, nous avons voulu refaire le point sur ce type non exceptionnel de complication, en insistant sur le peu d'études systématisées dans ce domaine, sur l'hétérogénéité des lésions observées et surtout sur le grand rôle joué par les thérapeutiques instaurées. [less ▲]

Homesick again - Homesick James

in Soul Bag (1984), (99), 14

Homesick James : photo

A comment on systematic errors in determinations of microturbulent velocities

in Astronomy and Astrophysics (1984), 134

It is shown that the usual method of microturbulent velocity determination from the "abundance versus equivalent width" plot leads to a systematic overestimate of the microturbulent velocity when the ... [more ▼]

It is shown that the usual method of microturbulent velocity determination from the "abundance versus equivalent width" plot leads to a systematic overestimate of the microturbulent velocity when the observd equivalent widths are affected by random errors. This overestimate is due to the correlation between errors in observed equivalent widths and in line abundances. This error rises rapidly with decreasing quality of the observational material and may be avoided by using theoretical equivalent widths instead of observed ones as abscissa of the "abundance versus equivalent width" plot. [less ▲]