O queijo é um derivado lácteo fresco ou curado, composto por proteínas, lipídios, sais minerais, carboidratos, vitaminas, cálcio e fósforo, produzido pela coagulação do leite. O presente trabalho teve como objetivo avaliar a influência de ondas sonoras e a influência do campo magnético no desenvolvimento de fungos que crescem em queijos. Foram realizados 3 experimentos utilizando as ondas sonoras em intervalos de exposição diferentes (6h/dia por 7 dias, 6h/dia por 11 dias e 24h/dia por 7 dias) e 2 experimentos utilizando o campo magnético (3 dias e 7 dias). Nos experimentos com ondas ultrassônicas, foi observado que a mudança no odor dos queijos que estavam submetidos ao ultrassom acontecia antes daqueles que não estavam submetidos ao ultrassom, mas as demais alterações não eram significativas. Já nos experimentos sob a influência do campo magnético foi observado, em ambos os ciclos, alterações sensoriais significativas em relação à amostra controle quanto ao surgimento de colônias de fungos visualmente detectáveis.
This article aimed to discuss the principles of sustainability applied to the built environment, highlighting the importance of universities as replicators of these practices. To respond to a demand from the campus for more security in the energy supply, the work proposes the implementation of a solar photovoltaic energy system. For this, it carried out an economic viability analysis through bibliographic review activities, characterization of the study area, dimensioning of photovoltaic systems, budgets, cost analysis and payback calculation. The research evaluated the system’s implementation considering two energy demands, for the entire campus and for a smaller building. It was found that the CSL-UFSJ consumes, on average, 27,300.38 kWh, at a cost of US$ 2,736. Thus, an annual savings of US$ 32,833 is calculated. The cost estimate analyzes showed a value of US$ 139,784 for the implementation of the system. The return on investment time was calculated for 4.3 and 4.9 years considering simple and discounted Payback respectively.It is estimated that the consumption of the DECEB building is 13,187.1 kWh with a cost of US$ 1,322 per month, which results in an annual savings of US$ 15,860. The cost estimate analyzes showed a value of US$ 40.601 for the implementation of the system and values of 4.3 and 4.9 years were obtained as return on investment time considering the calculations for simple and discounted Payback, respectively. The research demonstrates that the implementation of the photovoltaic solar energy generation system is feasible for both cases analyzed.
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