178,674 research outputs found
Phase recovery by using optical fiber dispersion and pulse pre-stretching
No full textIn this work, the applicability of a recently proposed phase recovery technique is extended, by using temporal pulse pre-stretching. As a proof of concept, the light pulses emitted by a two-stage laser system consisting of a sub-picosecond passively mode-locked fiber laser followed by an erbium-doped fiber amplifier were experimentally analyzed. These results were successfully compared with two indirect phase recovery techniques, both based on the Gerchberg–Saxton recursive algorithm and with the intensity autocorrelation when sub-picosecond light pulses were analyzed.Fil: Cuadrado Laborde, Christian Ariel. Universidad de Valencia. Departamento de Física Aplicada y Electromagnetismo; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); ArgentinaFil: Brotons Gisbert, M.. Universidad de Valencia. Departamento de Física Aplicada y Electromagnetismo; EspañaFil: Serafino, G.. Scuola Superiore Sant’Anna. TeCIP Institute; ItaliaFil: Bogoni, A.. Inter-university National Consortium for Telecommunications. National Laboratory of Photonic Networks; ItaliaFil: Pérez Millán, P.. Universidad de Valencia. Departamento de Física Aplicada y Electromagnetismo; España. FYLA LASER SL.; EspañaFil: Andres, M. V.. Universidad de Valencia. Departamento de Física Aplicada y Electromagnetismo; Españ
Littérature, du Moyen Age au XXe siècle. Ouvrage collectif (C. Campoli, A. Doremus, D. Dormoy, R. Koch-Piettre, I. Laborde-Milaa, C.-P. Meurant)
No full textLaborde-Milaa Isabelle. Littérature, du Moyen Age au XXe siècle. Ouvrage collectif (C. Campoli, A. Doremus, D. Dormoy, R. Koch-Piettre, I. Laborde-Milaa, C.-P. Meurant). In: Pratiques : linguistique, littérature, didactique, n°82, 1994. pp. 121-125
An Impact Study of the Economic Partnership Agreements (EPAs) in the Six ACP Regions
No full textThis article intends to present a very detailed analysis of the trade-related aspects of Economic Partnership Agreements (EPAs) negotiations. We use a dynamic partial equilibrium model – focusing on the demand side – at the HS6 level (covering 5,113 HS6 products). Two alternative lists of sensitive products are constructed, one giving priority to the agricultural sectors, the other focusing on tariff revenue preservation. In order to be WTO compatible, EPAs must translate into 90 percent of bilateral trade fully liberalised. We use this criterion to simulate EPAs for each negotiating regional block. ACP exports to the EU are forecast to be 10 percent higher with the EPAs than under the GSP/EBA option. On average ACP countries are forecast to lose 70 percent of tariff revenues on EU imports in the long run. Yet imports from other regions of the world will continue to provide tariff revenues. Thus when tariff revenue losses are computed on total ACP imports, losses are limited to 26 percent on average in the long run and even 19 percent when the product lists are optimised. The final impact on the economy depends on the importance of tariffs in government revenue and on potential compensatory effects. However this long term and less visible effect will mainly depend on the capacity of each ACP country to reorganise its fiscal base.Preferential Trade Agreements, Africa, EPAs, Partial Equilibrium Simulations, International Relations/Trade,
Magnetic Characterization Of The Mechanically Induced Thermite Reaction Between Fe2o3 And Al
No full textWe have investigated the mechanically induced self-propagating reaction between Fe2O3 and Al. In this reaction the final phases, Al2O3 and Fe, are formed by an in situ chemical reaction. The evolution of the system was characterized as a function of the milling time using X-ray diffraction, magnetometry (300 and 5 K) and Mössbauer spectroscopy (300 and 77 K). After reaction, Fe particles in a crystalline Al2O3 matrix have been formed. At larger milling times, a rather wide Fe grain size distribution of around 20 nm was obtained according to the diffraction patterns. Mössbauer spectra were constituted of both paramagnetic and ferromagnetic contributions. The former was attributed to small grains of superparamagnetic Fe (within the Mössbauer characteristic time τM ≈ 10-8s) and FeAl2O4, whereas the latter was associated to larger Fe grains. Saturation magnetization, coercivity field and remanent magnetization rapidly reached a stationary value with the milling time. A correlation between the microstructural characteristics of the sample and its magnetic properties before and after reaction is described. © 2004 Elsevier B.V. All rights reserved.3541-4 SPEC. ISS.125128Pardavi-Horvath, M., (1992) IEEE Trans. Magn., 28, p. 3186Meiklejohn, W.H., (1953) Rev. Mod. Phys., 25, p. 302Giri, A.K., (1997) Mater. Res. Bull., 32, p. 523Cuadrado-Laborde, C., (2001) Hyperfine Interactions, 134, p. 131Stewart, S.J., (2003) J. Magn. Magn. Mater., 260, p. 447Raming, T.P., (2002) J. Colloid. Interf. Sci., 249, p. 346C. Cuadrado-Laborde, et al., submittedMurad, E., (1981) Mössbauer Spectroscopy Applied to Inorganic Chemistry: Iron Oxides and Oxyhydroxides, pp. 507-582. , G.J. Long (Ed.), Plenum, Netherland
Enchiridium magec , Cuadrado, Moro & Norena 2017
No full textEnchiridium magec, Cuadrado, Moro & Noreña, 2017 (Fig. 5) FIGURA 5. Enchiridium magec Cuadrado, Moro & Noreña, 2017 . A. Distribution map and sample points; B. Whole live animal, dorsal view; C. Ventral view of whole live animal; D-E. Histological sections of the copulatory organs stained with Azan; F. Sagittal reconstruction of the reproduction system (D, E, F anterior end to the right). Material examined: Two specimens. One fixed in Bouin and one sagittal sectioned and stained with Azan. Deposited in the National Museum of Natural Sciences. 49 slides: MNCN 4.01/2412 to MNCN 4.01/2460 Location: Both specimens were collected in Playa Carbon (Las Baulas National Park of Guanacaste, Costa Rica) 10 ° 20’53.4 “N 85 ° 51’44.5” W; 19, May, 2018 (Fig 5A) Habitat: Low intertidal, below stones on sand. Description: External features (Fig.5B, C): Body shape elongated with smooth dorsal surface. Background colour yellow with cream dots and dark brown spots in the central area, forming a continuous longitudinal midline. Ventral colouration whitish. Without pseudotentacles or tentacles. With marginal eyes in the first third of the body and two elongated clusters of cerebral eyes. Tubular pharynx located in the anterior third of the body, anteriorly oriented. Reproductive system: Male copulatory apparatus with a single male gonopore (Fig. 5C), anterior to the female. With an elongated penis papilla armed with a long tubular stylet (Fig. 5E). Two interpolated prostatic vesicles, included in a very characteristic muscular bulb, and the seminal vesicle surrounded in a second muscular bulb (Fig. 5D). The female copulatory apparatus presents a short vagina, oriented posteriorly, surrounded by cement glands (Fig. 5F). Distribution: Enchiridium magec has been found in the Atlantic Ocean, Canary Islands, (Cuadrado et al., 2017) and in Costa Rica in this study. It is the first record for the Pacific Ocean and for the American west coast, Costa Rica.Published as part of Soutullo, Patricia, Cuadrado, Daniel & Noreña, Carolina, 2021, First study of the Polycladida (Rhabditophora, Platyhelminthes) from the Pacific Coast of Costa Rica, pp. 363-381 in Zootaxa 4964 (2) on pages 371-372, DOI: 10.11646/zootaxa.4964.2.7, http://zenodo.org/record/470958
Cécile Laborde, "Liberalism’s Religion".
No full textAll'interno di questa recensione viene sviluppata una riflessione critica circa la proposta, formulata da C. Laborde all'interno di "Liberalism's Religion", di attuare un 'secolarismo universale minimale' al fine di superare i limiti di un paradigma filosofico-politico rigidamente liberale
Route de Murcie à Grenade : lieues d'Espagne de une heure et un quart de marche ou de 20 au Dégré
No full text1 mapa. Publicat dins: Itinéraire descriptif de l'Espagne / par Alexandre de Laborde. Paris: Firmin Didot, 1827-1831, Pl. 20. Datat al 1809 aproximadament.26 x 17 c
Route de Barcelone á Lerida : lieues d'Espagne de une heure et un quart de marche ou de 20 au Dégré
No full text1 mapa. Publicat dins: Itinéraire descriptif de l'Espagne/ par Alexandre de Laborde, [1827-1831], Pl. 14.Datat entre 1827 i 1831.34 x 26 c
Route de Murcie à Grenade : lieues d'Espagne de une heure et un quart de marche ou de 20 au Dégré
No full text1 mapa. Publicat dins: Itinéraire descriptif de l'Espagne / par Alexandre de Laborde. Paris: Firmin Didot, 1827-1831, Pl. 20. Datat al 1809 aproximadament.26 x 17 c
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