1,123 research outputs found
Bertoldo, Bertoldino e Cacasenno, poema giocoso.
No full textPoem in 20 cantos each by a different author, G.P. Riva, P.B. Balbi and others, which is a metrical version of the prose romances "Le sottilissime astutie di Bertoldo" and "Le piacevoli et ridicolose simplicità di Bertoldino" by G.C. Croce and the "Novella di Cacasseno" by A. Banchieri under the pseudonym of Camillo Scaligeri della Fratta.Mode of access: Internet
Calendario de Bertoldo para 1868
No full textEl Calendario de Bertoldo es una publicación periódica popular del siglo XIX mexicano que combina el calendario civil con contenido humorístico, satírico y crítico, dirigido a un público amplio. Arreglado al meridiano de México, cada número incluye efemérides, fases lunares y otros datos astronómicos, acompañados de textos en verso o prosa que ridiculizan vicios sociales, figuras políticas y costumbres de la época. Con un estilo accesible y festivo, estos almanaques ofrecían tanto información útil como entretenimiento, y se inscriben dentro de una tradición de literatura de cordel y sátira impresa. Constituyen una fuente valiosa para el estudio de la opinión pública, la cultura popular y la crítica social en el México decimonónicoUniversidad Nacional Autónoma de México. Instituto de Investigaciones HistóricasDirección General de Asuntos del Personal Académico de la UNAM, a través de su Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica PAPIIT: "Fuentes para el estudio de la historia social (siglos XIX y XX)" PE 40131
Preparation and characterization of new functional materials by chemical modification of natural polysaccharides
No full text77 GHz radar for meteorological purposes: preliminary results
No full textThe European Telecommunications Standards Institute defines the frequency band around 77 GHz as dedicated to automatic cruise control long-range radars, but recent works demonstrated that, under specific assumption and with the right theoretical background, it is also possible to use a W-band radar as a short range microwave rain gauge.
Working at 77 GHz, raindrop size are comparable to the used wavelength and therefore it is necessary to use the general Mie scattering theory. In order to avoid underestimation of rain (up to -20 dB), the proper relation between the radar reflectivity factor Z and the rainfall rate R (the so-called Z-R equation) should be used, specifically determined for such frequency with the Mie scattering theory. A possible Z-R equation for 77 GHz radar has been presented by Bertoldo et. al. in 2017, during the EGU General Assembly.
An overview of functional requirements to adapt an automatic cruise control long-range radar (of particular interests for its low cost) to a short-range microwave rain gauge is given qualified for achieving rainfall measurements. Using a commercial prototype of W-band radar some preliminary measurements were made and will be presented. It is shown that it is possible to use W-band radar for monitoring weather events. A good Quantitative Precipitation Estimation (QPE) can be achieved with an acceptable approximation
Calendario del rústico Bertoldo, para 1864
No full textEl Calendario de Bertoldo es una publicación periódica popular del siglo XIX mexicano que combina el calendario civil con contenido humorístico, satírico y crítico, dirigido a un público amplio. Arreglado al meridiano de México, cada número incluye efemérides, fases lunares y otros datos astronómicos, acompañados de textos en verso o prosa que ridiculizan vicios sociales, figuras políticas y costumbres de la época. Con un estilo accesible y festivo, estos almanaques ofrecían tanto información útil como entretenimiento, y se inscriben dentro de una tradición de literatura de cordel y sátira impresa. Constituyen una fuente valiosa para el estudio de la opinión pública, la cultura popular y la crítica social en el México decimonónicoUniversidad Nacional Autónoma de México. Instituto de Investigaciones HistóricasDirección General de Asuntos del Personal Académico de la UNAM, a través de su Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica PAPIIT: "Fuentes para el estudio de la historia social (siglos XIX y XX)" PE 40131
Water extraction and degradation of a sterically hindered phenolic antioxidant in polypropylene films
No full textWater extraction of the sterically hindered phenolic antioxidant Irganox 1010 from three polypropylene based polymeric films has been studied in isothermal conditions at 40, 50 and 70 °C. The films made of isotactic polypropylene and two different heterophasic polypropylene/ethylene–propylene monomers copolymers (PP/EPM copolymers) were immersed in closed water baths under nitrogen atmosphere in order to minimise the oxidative process. The amounts of antioxidant that have left the films and are dissolved in the water bath have been monitored over time by HPLC analysis and faster extraction kinetics were observed from the polymers than from the homopolymer. No appreciable amounts of Irganox 1010 were found in the extraction water at any time, whereas its degradation by-products were found by LC/MS analysis in the extraction water.
The experimental extraction kinetics from the three polymers were compared with the theoretical curves based on the Fick's diffusion equations solved both for a semi-infinite (degradation reaction faster than extraction) and a finite system (no degradation reaction) and Irganox 1010 was demonstrated to be extracted by water from polypropylene based material faster than predictable only on the basis of the values of its coefficient of diffusion in the polymers and of partition between water and polymer
Water extration and degradation of a sterically hindered phenolic antioxidant in polypropylene films
No full textChemical Methods for Gelatin Crosslinking: A Review
No full textChemical methods so far experimentally investigated for gelatin crosslinking have been summarized with special emphasis on the reaction mechanisms. Advantages and disadvantages of all reactants have been reported in relation to the significant properties of the final applicative field
Designing Studies and Evaluating Research Results: Type M and Type S Errors for Pearson Correlation Coefficient
No full textIt is widely appreciated that many studies in psychological science suffer from low statistical power. One of the consequences of analyzing underpowered studies with thresholds of statistical significance is a high risk of finding exaggerated effect size estimates, in the right or the wrong direction. These inferential risks can be directly quantified in terms of Type M (magnitude) error and Type S (sign) error, which directly communicate the consequences of design choices on effect size estimation. Given a study design, Type M error is the factor by which a statistically significant effect is on average exaggerated. Type S error is the probability to find a statistically significant result in the opposite direction to the plausible one. Ideally, these errors should be considered during a prospective design analysis in the design phase of a study to determine the appropriate sample size. However, they can also be considered when evaluating studies’ results in a retrospective design analysis. In the present contribution, we aim to facilitate the considerations of these errors in the research practice in psychology. For this reason, we illustrate how to consider Type M and Type S errors in a design analysis using one of the most common effect size measures in psychology: Pearson correlation coefficient. We provide various examples and make the R functions freely available to enable researchers to perform design analysis for their research projects
Calendario de Bertoldo: para el año 1866: arreglado al meridiano de México
No full textEl Calendario de Bertoldo es una publicación periódica popular del siglo XIX mexicano que combina el calendario civil con contenido humorístico, satírico y crítico, dirigido a un público amplio. Arreglado al meridiano de México, cada número incluye efemérides, fases lunares y otros datos astronómicos, acompañados de textos en verso o prosa que ridiculizan vicios sociales, figuras políticas y costumbres de la época. Con un estilo accesible y festivo, estos almanaques ofrecían tanto información útil como entretenimiento, y se inscriben dentro de una tradición de literatura de cordel y sátira impresa. Constituyen una fuente valiosa para el estudio de la opinión pública, la cultura popular y la crítica social en el México decimonónicoUniversidad Nacional Autónoma de México. Instituto de Investigaciones HistóricasDirección General de Asuntos del Personal Académico de la UNAM, a través de su Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica PAPIIT: "Fuentes para el estudio de la historia social (siglos XIX y XX)" PE 40131
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