À minha mãe Simone, que com toda sua força e dedicação me mostrou que a educação é a chave da mudança. Ao meu padrasto Adriano, que com toda sua paciência, respeito e honestidade me ajudou a ser uma pessoa melhor. Aos meus irmãos João Pedro e Ana Clara, amores da minha vida, que entendem minha ausência e são o motivo pelo qual busco ser melhor a cada dia. Aos meus avós Irany, Gentil (in memorian) e Carolina (in memorian), que com humildade e muito amor me proporcionaram os maiores ensinamentos. As minhas tias, que posso chamar de mãe, Elizete, Maria Aparecida e Sandra, por todo amor e carinho e por sempre acreditarem no meu potencial. Aos meus primos André, Taynara, Tamires, Isabela e Juan, por estarem sempre dispostos a me escutar, tenho sorte de ter vocês ao meu lado.

No abstract

Automação em bancada para ensaios hidráulicos de válvulas reguladoras de pressãoBench automation for hydraulic tests of pressure regulator valves

The demands of high-quality zucchini fruits by the consumer market make studies regarding the improvement of cultivation systems, such as plant nutrition and salinity tolerance. Considering the demands of the consumer market for the high quality of zucchini fruits, it is necessary studies regarding the improvement of production systems for this improvement, such as nutrition and salinity tolerance to plant. Thus, this study aimed to evaluate the zucchini fruits quality characteristics, grown in soilless, under N:K ratios, and levels of electrical conductivity of the nutrient solution. The experiment was conducted in a protected environment in pots with 8.2 dm³ of volumetric capacity filled with commercial substrate. The trial design adopted was randomized blocks, with three replicates, in a 5x3 factorial scheme, with five levels of electrical conductivity (1.0; 2.0; 3.0; 4.0; and 5.0 dS m -1 ) and three N:K ratios (2:1; 1:1; and 1:2), both in the nutrient solution. The application of the nutrient solution was by fertigation through drip irrigation. Throughout the experiment, variables related to fruit quality and total plant biomass production were analyzed. The HIGHLIGHTS• Electrical conductivity (EC) and N:K ratios modify zucchini fruit size.• Organoleptic characteristics of zucchini fruits increase with EC.• Total dry mass production of plants showed interaction between N:K ratio and EC.