No abstract

RESUMOO objetivo do trabalho foi determinar o melhor nível de proteína bruta na alimentação de codornas japonesas em fase de produção. Foram utilizadas 300 codornas com 16 semanas de idade, alojadas em gaiolas, em um delineamento inteiramente casualizado, com cinco tratamentos, seis repetições e dez aves por unidade experimental. Os níveis avaliados foram 14, 17, 20, 23 e 26% de proteína bruta, e as dietas foram formuladas para serem isoenergéticas. Foi verificado efeito quadrático para consumo de ração, peso de ovo, massa de ovo, ingestão de energia, eficiência energética por dúzia de ovo, coeficiente de digestibilidade de nitrogênio, retenção de nitrogênio, peso de gema, casca e albúmen. Efeito linear foi verificado para produção de ovos, ingestão de proteína, conversão alimentar por massa de ovos, eficiência energética por massa de ovo em kg, peso final e gravidade específica. Não houve efeito significativo para conversão alimentar por dúzia e concentração sérica de ácido úrico. Recomenda-se nível de 20% de proteína bruta para codornas japonesas em fase de postura.

In this paper, we propose the definition of a formal, expressive and consistent language to describe signs in Brazilian Sign Language (LIBRAS). This language allows the definition of all parameters (phonemes) of a sign and from this definition an animation is generated based on a 3D humanoid avatar. The proposed language is also flexible in the sense that it has mechanisms to include new parameters (or phonemes) “on the fly”. In order to provide a case study for the proposed language, a human computation system for collaborative construction of a LIBRAS vocabulary was also developed. This system, called WikiLIBRAS, allows deaf users and LIBRAS interpreters to describe signs and generate animations for signs in LIBRAS. Some preliminary tests with Brazilian deaf users and LIBRAS interpreters were also performed to evaluate the proposal. Our preliminary evaluation indicates that the proposed language can represent a significant number of signs in LIBRAS and WikiLIBRAS users can generate signs in LIBRAS more productively than 3D designers.

No abstract

Biocomposites based on poly(lactic acid) (PLA), Aloe Vera (AV), and Priplast (Pr), were produced with AV and Pr levels of 5% and 10%, and submitted to UVA radiation for a time interval up to 28 days. Chemical changes were investigated using Fourier transform infrared spectroscopy (FTIR) and the thermal behavior was elucidated using differential scanning calorimetry (DSC); the non‐isothermal crystallization kinetics was modeled using the Pseudo‐Avrami model. FTIR spectra evidenced the formation of chromophore groups resulting from the photodegradation, which it was less intense in biocomposites with 10% Pr. AV addition promoted the cold crystallization, whereas the crystallization rate () displayed higher values for PLA/10%AV, with slight increases in the degree of crystallinity (Xc); while Pr addition decreased the Xc and of PLA, and protected it more intensely against the photodegradation effects. Pseudo‐Avrami model presented R2 ≥ 0.9909 and a low discrepancy between experimental and theoretical data, being adequate to describe the cold crystallization of PLA biocomposites. Summing up, AV and Pr addition protect PLA against the harmful effects of photodegradation, with AV subtly interfering in the crystalline parameters while Pr provides greater amorphicity to PLA biocomposites.