Uso de RMN no Estado Estacionário para Aumento de Sensibilidade de Análises Químicas.

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Metodologia de medida da difusividade térmica por RMN-CWFP.

bitstream/CNPDIA-2009-09/11832/1/CT72_2006.pd

Aplicações da espectroscopia de RMN (CWFP) na medida de umidade em sementes e grãos.

Neste trabalho demonstramos as vantagens e desvantagens de se usar a técnica de CWFP para medidas de óleo e umidade em sementes, em relação as técnicas normais de RMN com o uso do FID e eco.bitstream/CNPDIA/8115/1/CiT14_2002.pd

Medida Rápida e Simultânea dos Tempos de Relaxação Longitudinal e Transversal por RMN-CWFP.

bitstream/CNPDIA/10475/1/CT66_2005.pd

Influence of Brazilian pine seed flour addition on rheological, chemical and sensory properties of gluten-free rice flour cakes.

O pinhão trata-se de uma semente sem glúten, produzida pelo pinheiro da espécie Araucaria angustifolia. Neste estudo, foram desenvolvidas misturas de bolo sem glúten, compostas por farinha de pinhão e farinha de arroz. As misturas de bolo foram produzidas conforme o modelo experimental Simplex Centroid, que definiu as proporções entre a farinha de arroz e a farinha de pinhão na variação de 50 a 100% e 0 a 50%, respectivamente. As misturas foram analisadas quanto à composição química, viscosidade aparente da pasta e distribuição de tamanho de partícula. Os bolos resultantes foram submetidos às análises de aceitação sensorial, textura volume específico e composição química. A farinha de pinhão demostrou ocorrência do pico de viscosidade ao aquecimento no valor de 1,761Pa.s contra 4,747Pa.s da amostra composta por 100% de farinha de arroz. A variação da firmeza dos bolos diminuiu com o aumento da porcentagem de farinha de pinhão. Em termos sensoriais, os bolos contendo entre 25 a 37,5% de farinha de pinhão apresentaram maior aceitação geral

Gravitational Lorentz Force and the Description of the Gravitational Interaction

In the context of a gauge theory for the translation group, we have obtained, for a spinless particle, a gravitational analog of the Lorentz force. Then, we have shown that this force equation can be rewritten in terms of magnitudes related to either the teleparallel or the riemannian structures induced in spacetime by the presence of the gravitational field. In the first case, it gives a force equation, with torsion playing the role of force. In the second, it gives the usual geodesic equation of General Relativity. The main conclusion is that scalar matter is able to feel anyone of the above spacetime geometries, the teleparallel and the metric ones. Furthermore, both descriptions are found to be completely equivalent in the sense that they give the same physical trajectory for a spinless particle in a gravitational field.Comment: Equations (44)-(47) correcte

Encapsulated bacteriophages in alginate-nanohydroxyapatite hydrogel as a novel delivery system to prevent orthopedic implant-associated infections

Supplementary data to this article can be found online at: https://doi.org/10.1016/j.nano.2019.102145.An innovative delivery system based on bacteriophages-loaded alginate-nanohydroxyapatite hydrogel was developed as a multifunctional approach for local tissue regeneration and infection prevention and control. Bacteriophages were efficiently encapsulated, without jeopardizing phage viability and functionality, nor affecting hydrogel morphology and chemical composition. Bacteriophage delivery occurred by swelling-disintegration-degradation process of the alginate structure and was influenced by environmental pH. Good tissue response was observed following the implantation of bacteriophages-loaded hydrogels, sustaining their biosafety profile. Bacteriophages-loaded hydrogels did not affect osteoblastic cells' proliferation and morphology. A strong osteogenic and mineralization response was promoted through the implantation of hydrogels system with nanohydroxyapatite. Lastly, bacteriophages-loaded hydrogel showed excellent antimicrobial activity inhibiting the attachment and colonization of multidrug-resistant E. faecalis surrounding and within femoral tissues. This new local delivery approach could be a promising approach to prevent and control bacterial contamination during implantation and bone integration.Funding: This work was supported by FEDER – Fundo Europeu de Desenvolvimento Regional funds through the COMPETE 2020 – Operational Programme for Competitiveness and Internationalisation (POCI), Portugal 2020, by Portuguese funds through FCT/MCTES in the framework of the project “institute for Research and Innovation in Health Sciences (POCI-01-0145-FEDER-007274), by Project Biotherapies (NORTE-01-0145-FEDER-000012) and by Joana Barrosʼ PhD grant (SFRH/BD/102148/2014). This work was also supported by Portuguese funds through FCT/MCTES (UID/QUI/50006/2019).info:eu-repo/semantics/publishedVersio