170,355 research outputs found
La Convention accorde un congé de deux décades et demie au représentant Castaing, lors de la séance du 3 brumaire an III (24 octobre 1794)
No full textCastaing Toussaint, Pierre, Louis, Samuel. La Convention accorde un congé de deux décades et demie au représentant Castaing, lors de la séance du 3 brumaire an III (24 octobre 1794). In: Archives Parlementaires de 1787 à 1860 - Première série (1787-1799) Tome C - Du 3 au 18 brumaire an III (24 octobre au 8 novembre 1794) Paris : CNRS éditions, 2000. p. 46
La Convention accorde un congé de deux décades et demie au représentant Castaing, lors de la séance du 3 brumaire an III (24 octobre 1794)
No full textCastaing Toussaint, Pierre, Louis, Samuel. La Convention accorde un congé de deux décades et demie au représentant Castaing, lors de la séance du 3 brumaire an III (24 octobre 1794). In: Archives Parlementaires de 1787 à 1860 - Première série (1787-1799) Tome C - Du 3 au 18 brumaire an III (24 octobre au 8 novembre 1794) Paris : CNRS éditions, 2000. p. 46
Control problems governed by functional evolution inclusions with Young measures
No full textThe pioneering works concerning control problems governed by ordinary differential equations and evolution inclusions with Young measures are due to C.Castaing, P.Raynaud de Fitte and A.Jofre [see 17, 16 in the references].
In the same spirit, we consider in this paper some Bolza-type problems governed by two classes of functional evolutions inclusions, where the controls are Young measures. In particular, we present some variational properties of the value function of these dynamics and we show that the lower value function associated to a continuous cost functional is a viscosity sub-solutions of the corresponding Hamilton-Jacobi-Bellman equation. This sheds a new light in the study of the viscosity solutions for the dynamics governed by ordinary differential equations. In the present paper we also extend a number of results in the literature of evolution inclusions and ordinary differential equations
Non convex sweeping process
No full textWe discuss the existence of BV and Lipschitz solution for the sweeping process associated to a nonconvex closed moving set. Convex and nonconvex perturbation of the involved evolution problem are also studied
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
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
Refractive Index and Strain Modulation Tailor the Afterglow of Nanocomposite Films
No full textTailoring the unique delayed and long-lasting luminescence of persistent phosphors is crucial for their application in anticounterfeiting, data storage, imaging displays, and AC-driven lighting. We introduce a novel strategy to achieve this by modifying the refractive index of persistent phosphor transparent coatings. Specifically, we developed ZnGa2O4:Cr3+/SiO2 nanocomposite films with tunable refractive indices from 1.45 to 1.7. This tunability allowed us to precisely control the Cr3+ radiative decay rate, resulting in a substantial 1.7-fold increase in both luminescence and afterglow brightness. Furthermore, our approach uniquely influences the intrinsic charging rate of the phosphor, a mechanism attributed to the strain induced on the ZnGa2O4:Cr3+ nanocrystals by the presence of SiO2. This work demonstrates an unprecedent ability to manipulate the afterglow kinetics without altering the material composition, opening new avenues for designing and optimizing persistent luminescence materials.We thank Bruno Viana and Juan R. Sánchez-Valencia for their assistance with thermoluminescence and ellipsometry measurements, respectively. This project has received funding from the BBVA Foundation Leonardo Grant for Physics Researchers 2023, and by the Spanish Ministry of Science, Innovation and Universities under Grant EUR2023-143467 funded by MICIU/AEI/10.13039/501100011033 and by the European Union NextGenerationEU/PRTR, and under grant PID2024-161708OB-I00 funded by MICIU/AEI/10.13039/501100011033. Author V.C. acknowledges Junta de Andalucía for financial support (POSTDOC_21_00694). Author M.R. acknowledges Grant FPU23/01435, funded by MCIN/AEI/10.13039/501100011033. Author A.J.F.-C. acknowledges support from the Junta de Andalucía through the EMERGIA program (grant 2022/00001043).Peer reviewe
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