962 resultados para Donatello, 1386?-1466.
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Cet article est publié avec l'accord de la Chambre des notaires du Québec.
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Département de linguistique et de traduction
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La contribution intellectuelle d’Érasme de Rotterdam (ca 1466-1536), en particulier dans les domaines exégétique, philologique et littéraire, a été décisive pour l’histoire des idées et l’évangélisme humaniste. Ses "Paraphrases sur le Nouveau Testament", visant principalement à clarifier le propos des saintes Écritures, représentent l’aboutissement de tout son travail exégétique. Davantage qu’un commentaire savant, elles ont contribué à diffuser la piété et le savoir biblique chez les laïcs, ce qui explique le franc succès qu’elles ont remporté au XVIe siècle. Toutefois, la question de leur réception et de leur diffusion en langue française reste encore peu explorée. La "Paraphrase sur l’épître de Paul aux Romains" a eu une importance toute particulière dans le contexte de la Réforme religieuse. Elle a été traduite du latin au français dans un manuscrit rédigé en 1526 par Hubert Kerssan, chanoine de Nivelles, dans le Brabant wallon. Destinée sans doute à un usage privé ou, du moins, à une diffusion plus restreinte, cette traduction est restée dans l’ombre jusqu’à aujourd’hui et son existence même est encore inconnue de la critique, d’où notre projet de la rendre accessible grâce à l’établissement d’une édition critique. Ce travail éditorial a été l’occasion d’étudier la traduction de Kerssan en regard du texte original, ce qui nous a permis de déterminer comment elle s’en distingue, de même que de réfléchir au choix du mode de diffusion manuscrit dans le contexte humaniste du XVIe siècle. Après près de cinq siècles, le manuscrit de Nivelles peut enfin acquérir une certaine visibilité. Il saura contribuer à l’étude de la réception et de la diffusion de la pensée érasmienne dans les milieux francophones en Europe ainsi qu’aux problèmes théologiques et culturels posés par l’œuvre d’Érasme.
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Porcine reproductive and respiratory syndrome (PRRS) is an economically devastating viral disease affecting the swine industry worldwide. The etiological agent, PRRS virus (PRRSV), possesses a RNA viral genome with nine open reading frames (ORFs). The ORF1a and ORF1b replicase-associated genes encode the polyproteins pp1a and pp1ab, respectively. The pp1a is processed in nine non-structural proteins (nsps): nsp1a, nsp1b, and nsp2 to nsp8. Proteolytic cleavage of pp1ab generates products nsp9 to nsp12. The proteolytic pp1a cleavage products process and cleave pp1a and pp1ab into nsp products. The nsp9 to nsp12 are involved in virus genome transcription and replication. The 30 end of the viral genome encodes four minor and three major structural proteins. The GP2a, GP3 and GP4 (encoded by ORF2a, 3 and 4), are glycosylated membrane associated minor structural proteins. The fourth minor structural protein, the E protein (encoded by ORF2b), is an unglycosylated membrane associated protein. The viral envelope contains two major structural proteins: a glycosylated major envelope protein GP5 (encoded by ORF5) and an unglycosylated membrane M protein (encoded by ORF6). The third major structural protein is the nucleocapsid N protein (encoded by ORF7). All PRRSV non-structural and structural proteins are essential for virus replication, and PRRSV infectivity is relatively intolerant to subtle changes within the structural proteins. PRRSV virulence is multigenic and resides in both the non-structural and structural viral proteins. This review discusses the molecular characteristics, biological and immunological functions of the PRRSV structural and nsps and their involvement in the virus pathogenesis.
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Most adaptive linearization circuits for the nonlinear amplifier have a feedback loop that returns the output signal oj'tne eunplifier to the lineurizer. The loop delay of the linearizer most be controlled precisely so that the convergence of the linearizer should be assured lot this Letter a delay control circuit is presented. It is a delay lock loop (ULL) with it modified early-lute gate and can he easily applied to a DSP implementation. The proposed DLL circuit is applied to an adaptive linearizer with the use of a polynomial predistorter, and the simulalion for a 16-QAM signal is performed. The simulation results show that the proposed DLL eliminates the delay between the reference input signal and the delayed feedback signal of the linearizing circuit perfectly, so that the predistorter polynomial coefficients converge into the optimum value and a high degree of linearization is achieved
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A sensitive method based on the principle of photothermal phenomena to study the energy transfer processes in organic dye mixtures is presented. A dual beam thermal lens method can be very effectively used as an alternate technique to determine the molecular distance between donor and acceptor in fluorescein–rhodamine B mixture using optical parametric oscillator.
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In this paper, we present a laser-induced photoacoustic study on the photostability of laser dye Coumarin 540 doped in PMMA matrix and modified by the incorporation of low-molecular weight additives. The dependence of photostability of the dye on various experimental conditions, such as nature of solvents, incident optical power and dye concentration, is investigated in detail. The activation rates for the bleaching process are calculated for different concentrations and they suggest the possibility of two distinct mechanisms responsible for photodegradation. Further, analysis of the data confirms the linear dependence of photodegradation on the intensity of incident radiation. The role of different externally influencing parameters, such as wavelength and modulation frequency of incident radiation, is also discussed.
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The laser-induced luminescence studies of the rare earth titanates (R2Ti2O7) (R = La, Nd and Gd) using 355 nm radiation from an Nd:YAG laser are presented. These samples with submicron or nanometer size are prepared by the self-propagating high temperature synthesis (SHS) method and there is no known fluorescence shown by these rare earths in the visible region. Hence, the luminescence transitions shown by the La2Ti2O7 near 610 nm and Gd2Ti2O7 near 767 nm are quite interesting. Though La3+ ions with no 4f electrons have no electronic energy levels that can induce excitation and luminescence processes in the visible region, the presence of the Ti3+ ions leads to luminescence in this region.
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We report enhanced back scattering in nanometer-sized ZnO colloids prepared in two different media, by different methods. The FWHM of the back scattered cone and hence the mean free path varied with concentration of ZnO as well as particle size. The Lorentzian profile of backscattered cone indicates the presence of coherence.
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Optical absorption studies of phthalocyanines (Pc-s) in borate glass matrix have been reported for the first time. Measurements have been done corresponding to photon energies between 1.1 and 6.2 eV for free base, manganese, iron, nickel, molybdenum, cobalt and copper phthalocyanines. Several new discrete transitions are observed in the UV–vis region of the spectra in addition to a strong continuum component of absorption in the IR region. Values of some of the important optical constants viz. absorption coefficient (α), molar extinction coefficient (ε), absorption cross-section (σa), band width (Δλ), electric dipole strength (q2) and oscillator strength (f) for the relevant electronic transitions are also presented. All the data reported for Pc-s in the new matrix have been compared with those corresponding to solution, vapor and thin film media.
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Nano structured noble metals have very important applications in diverse fields as photovoltaics, catalysis, electronic and magnetic devices, etc. Here, we report the application of dual beam thermal lens technique for the determination of the effect of silver sol on the absolute fluorescence quantum yield (FQY) of the laser dye rhodamine 6G. A 532 nm radiation from a diode pumped solid state laser was used as the excitation source. It has been observed that the presence of silver sol decreases the fluorescence quantum efficiency. This is expected to have a very important consequence in enhancing Raman scattering which is an important spectrochemical tool that provides information on molecular structures. We have also observed that the presence of silver sol can enhance the thermal lens signal which makes the detection of the signal easier at any concentration.
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Guía dirigida a profesores de lengua y literatura escrita en estilo epistolar. Dos partes componen este recurso. En la primera se repasan temas educativos y didácticos generales, tomando partido por fórmulas docentes tradicionales que contrarresten los excesos presentes. En la segunda se propone una serie de técnicas de enseñanza y se tratan cuestiones en torno a la enseñanza de la literatura contemporánea y de la lengua, además de incluir un apéndice sobre el comentario natural de textos..
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Título tomado de la cubierta. - Resumen tomado parcialmente de la publicación.
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Contribuir al mejor conocimiento de la responsabilidad de las Instituciones locales en un servicio tan importante como era el de la Instrucci??n P??blica. Interpretar los cambios que se produjeron en el ??mbito de la Instrucci??n Primaria y valorar si ??stos respondieron a unas expectativas y a unas necesidades sociales de esta ciudad en concreto. Presentar una panor??mica de la Instrucci??n Primaria a comienzos del siglo XX. Valorar el grado de eficiencia de las Instituciones. Detectar la preocupaci??n social existente por los aspectos educativos. La obra educativa realizada en la Restauraci??n en Zaragoza: aspectos comunes y diferencias con el resto del pa??s. Se analizan los siguientes aspectos: la sociedad zaragozana de la Restauraci??n; las Instituciones de promoci??n y control educativo; la pol??tica escolar municipal, las escuelas municipales, la infraestructura de las escuelas, el censo de alumnos, la situaci??n del profesorado; aspectos relacionados con la ense??anza (curr??culum y programas escolares, sistemas de ense??anza, m??todos de ense??anza, ex??menes p??blicos, material did??ctico); los centros privados; analfabetismo y proceso escolar; la Escuela Normal de Maestros y la Escuela Normal de Maestras; la educaci??n popular de adultos y la educaci??n popular de la mujer. Fuentes primarias. Documentos oficiales. Prensa local y profesional. Planos. Interpretaci??n y valoraci??n de los cambios producidos y comparaci??n con los del resto del pa??s. La situaci??n general de la Primera Ense??anza, al finalizar 1902, era muy diferente de la inicial. Los cambios m??s f??cilmente observables afectaban al n??mero de escuelas, al n??mero de alumnos escolarizados y al aumento de las consignaciones presupuestarias. La calidad de la ense??anza no sigui?? un ritmo paralelo al aumento cuantitativo, caracteriz??ndose por una deficiente infraestructura, frecuentes cambios en la localizaci??n, escasa dotaci??n para material escolar, persistencia de un profesorado auxiliar mal seleccionado y mal pagado. Frente a una Instrucci??n Primaria municipal que se considera escasa en sus objetivos, en los medios y posiblemente en los resultados, se desarrolla una ense??anza privada pujante, especialmente la de algunas ??rdenes religiosas, muchas de las cuales abrieron centros que se han mantenido hasta la actualidad. Respecto a las Escuelas Normales, se ha apreciado que muchas participaron de la situaci??n de abandono generalizado. La Corporaci??n Municipal asumi?? definitivamente la funci??n que le correspond??a respecto a la Instrucci??n Primaria en el nivel de edad propiamente escolar aunque no lleg?? a contar con el inter??s y, sobre todo, con la dotaci??n econ??mica que exig??a una mejora cualitativa de dicha ense??anza.