RESUMO O presente estudo teve como objetivo determinar a soroprevalência de anticorpos anti-Toxoplasma gondii em felinos da região do Parque Estadual da Serra da Tiririca (PESET-RJ), Rio de Janeiro, utilizando a IFAT para avaliar as variáveis de sexo e idade. Os gatos são oriundos da região do Parque Estadual da Serra da Tiririca (PESET-RJ), Niterói, Rio de Janeiro (RJ). Entre 2015 e 2016, um total de 86 amostras de sangue de felinos foi coletado de 35 fêmeas e 51 machos semidomiciliados, atendidos pelo Programa de Esterilização da UFF. As amostras foram avaliadas para pesquisa de anticorpos da classe imunoglobulina G (IgG) anti-T. gondii pela reação de imunofluorescência indireta (RIFI) com ponto de corte de 1:40. Das amostras analisadas, 29,07% (25/86) apresentaram anticorpos anti-T gondii. Não se observou associação significativa (P>0,05) entre as variáveis sexo e idade dos animais com os resultados da sorologia. Os resultados obtidos neste estudo sugerem que T. gondii possui uma distribuição considerável entre os felinos da região estudada (PESET-RJ). Este é o primeiro relato de soroprevalência de T. gondii em felinos desta área. Idade e sexo não foram considerados fatores de risco para infecção por T. gondii neste grupo de animais estudados.

ABSTRACT The present study aimed to determine the seroprevalence of anti-T. gondii antibodies in cats of the Serra da Tiririca State Park region using the IFAT to evaluate the sex and age variables. The cats were domiciled in the region of Serra da Tiririca State Park (PESET-RJ), Rio de Janeiro. Between 2015 and 2016, a total of 86 blood samples were collected from 35 female and 51 male semi-domiciled cats that were attended to by a spay-neuter program of UFF. Samples were evaluated for anti-T. gondii immunoglobulin G by the indirect immunofluorescence reaction (IFAT) with a cut-off point of 1:40. Of the samples analyzed, 29.07% (25/86) presented anti-T gondii antibodies. There was no significant association (P> 0.05) between the variables sex and age of the animals with serology results. The results obtained in this study suggest that T. gondii has a considerable distribution among the cats of the studied region (PESET-RJ). This is the first report of the seroprevalence of T. gondii in cats from this area. Age and gender were not considered risk factors for infection by T. gondii in this group of animals studied.

Growth in the international popularity of Brazil nuts oil (Bertholletia excelsa, Bonpl.) has demanded a closer look at quality aspects of the nuts. In this context, time-domain 1H nuclear magnetic resonance spectroscopy (TD-NMR) can be a useful tool for assessing the lipid portion of such matrices. In this work, a TD-NMR method was developed and validated to assess the oil content directly from Brazil nuts following the ISO 10565:1998 and DOQ-CGCRE-008. Full validation was addressed covering the working range from 0.67 to 25.00 g (coefficient of determination, R2= 0.9993). Limits of detection (LOD) and quantification (LOQ) were 0.20 and 0.67 g, respectively. The repeatability and intermediate precision assays met the guide requirements. Oil contents obtained in two laboratories (different equipment) were statistically similar (66.93 ± 4.69 and 70.13 ± 4.15%), highlighting the method’s robustness. The developed approach has the potential to be adopted as an industrial reference method for in situ monitoring of Brazil nuts oil contents.

Starting from the premise that the management of fixture systems in the area of machining has been somewhat neglected from the standpoint of its technological development, the work reported on herein focuses on the development of a methodology for the management of these systems. Based on the findings of a survey carried out at companies operating in this sector and on a review of the literature on the subject, both of which confirm this lack, hypotheses are drawn up and supporting data compiled to underpin the development of a systematic, extensive and flexible model. The model, founded on principles of standardization and modularity, basically consists of four main stages: the company's definition/characterization of fixtures management, selection of the type of fixture suitable for the company, rationalization and organization of the area, and the construction of planning and control architectures within the company. We foresee that the formalization of the scientifically-based management support model proposed here will contribute significantly to productive and R&D sectors, computerizing the fixtures management methods used by companies and integrating their managerial philosophies and procedures for machining tools and fixtures.