169,905 research outputs found
C. Guérin, Le trésor des lettres latines ; I : Des primitifs à Horace
No full textChanut Pierre-Yves. C. Guérin, Le trésor des lettres latines ; I : Des primitifs à Horace. In: Bulletin de l'Association Guillaume Budé, n°3, octobre 1975. pp. 435-436
Les essences végétales: notice dans le catalogue « Le palais royal d'Ougarit »
No full textR. Hawley et C. Chanut, « Les essences végétales », notice 11 (p. 78-81) dans « L'Orient des palais : Le palais royal d'Ougarit au Bronze récent » (catalogue de l'exposition qui s'est tenue au Musée Nationale de Damas, en octobre 2008), Documents d'Archéologie Syrienne 15 (M. Al-Maqdissi et V. Matoïan (éds) ; Direction Générale des Antiquités et des Musées, Damas, 2008).Article de diffussion de la recherche consacré aux données disponibles pour reconstituer la flore de l'ancien Ougari
Les essences végétales: notice dans le catalogue « Le palais royal d'Ougarit »
No full textR. Hawley et C. Chanut, « Les essences végétales », notice 11 (p. 78-81) dans « L'Orient des palais : Le palais royal d'Ougarit au Bronze récent » (catalogue de l'exposition qui s'est tenue au Musée Nationale de Damas, en octobre 2008), Documents d'Archéologie Syrienne 15 (M. Al-Maqdissi et V. Matoïan (éds) ; Direction Générale des Antiquités et des Musées, Damas, 2008).Article de diffussion de la recherche consacré aux données disponibles pour reconstituer la flore de l'ancien Ougari
Direct determination of turbulent burning velocity during aluminum flame propagation: A comparison of three experimental methods
No full textBurning velocity is a key parameter of main flame propagation models. However, its experimental determination while studying propagating dust flame is still challenging. In this work, aluminum flame propagation in a vertical tube is studied. Two aluminum powders with median diameters of 6.2 and 20.7 μm are analyzed for different equivalence ratios with air. The main objective of this work is to compare the methods commonly used in the literature to determine the burning velocity in the case of propagating flames. One of these methods is based on the estimation of the thermal expansion coefficient. This article focuses first on the estimation of this coefficient and presents the limits of considering the adiabatic flame temperature for its estimation. As detailed in the paper, these methods have some limitations and are therefore compared with an innovative method based on a local direct determination of the burning velocity. This local method is based on the measurement of the unburned flow velocity just ahead of the propagating flame front by Time-Resolved Particle Image Velocimetry (TR-PIV). The methods commonly used in the literature mainly underestimate the burning velocity when compared with the local method. The local method is then used to study the influence of the particle size distribution and the equivalence ratio on the turbulent burning velocity. Firstly, we observe that the turbulent burning velocity increases while the flame is propagating in the vertical tube. Furthermore, the turbulent burning velocity with the 6-μm powder is higher than with the 20-μm powder
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The bottleneck/cork interface: a key parameter in bottle-aging of wine
No full textInternational audienceA study of changes in oxygen transfer through micro-agglomerated corks was carried out over 24 months under controlled storage conditions (Chanut et al., 2023a). This work demonstrated that the glass/cork interface can represent a major entry route for oxygen into wine bottles. It also showed that there is no difference in oxygen transfer at 20°C between bottles stored horizontally and vertically. However, high storage temperature greatly increases oxygen transfer at the interface between the cork and the bottleneck
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
L’interface goulot / bouchon : un paramètre clé du vieillissement du vin en bouteille.
No full textNational audienceUne étude sur l'évolution des transferts d'oxygène à travers des bouchons micro-agglomérés a été réalisée sur une période de 24 mois dans des conditions de stockage contrôlées (Chanut et al., 2023a). Ce travail montre que l'interface verre/bouchon peut représenter une voie d'entrée majeure de l'oxygène dans les bouteilles de vin. La position de stockage de la bouteille, conservée horizontalement ou verticalement, n’a pas d’incidence sur les transferts d’oxygène à 20 °C. Toutefois, une température de stockage élevée augmente fortement le transfert d'oxygène à l'interface entre le bouchon et le goulot de la bouteille
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