Inspeção de materiais compósitos utilizando ondas acústicas guiadas

Pós-graduação em Engenharia Elétrica - FEIS

From acoustic waves to microwaves

We present here some results of our research related to the optoelectronics and photonics and show all the experimental setups used. Starting with a discussion on the importance of the waves, we demonstrate our achievements based on employment of acoustic, optical, and microwaves and their technological use. The results concern the acousto-optic and electro-optic effects. The generalized analysis of the electro-optic effect reveals a new high induced birefringence in lithium niobate. A patented optical fiber microphone is presented, and its applications to the measurements of acoustic wave velocity in gases and in the laser ultrasound non-destructive evaluation system are discussed. Finally, the generation of microwaves by an optical method with substantial cost reduction is presented.

Pitahaya aging diagnostic by impedance/capacitance spectroscopy

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Classification of intact açai (Euterpe oleracea Mart.) and jucara (Euterpe edulis Mart) fruits based on dry matter content by means of near infrared spectroscopy

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Mapping of clay, iron oxide and adsorbed phosphate in Oxisols using diffuse reflectance spectroscopy

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Paleometry: a brand new area in brazilian science

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Uso da espectroscopia do infravermelho próximo (NIR) como método não destrutivo para a discriminação de aguardentes de cana-de-açúcar produzidas no Estado de São Paulo e Minas Gerais, e predição do teor de etanol

Pós-graduação em Alimentos e Nutrição - FCFAR

Estimativa do número de frutos verdes em laranjeiras com o uso de imagens digitais

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ex vivo torsional properties of the Targon Vet Nail System in canine femurs: comparison with the 2.4 mm LC-DCP Plate

Pós-graduação em Cirurgia Veterinária - FCAV

Efeito do Ácido Ascórbico em melões 'Orange Flesh' minimamente processados

The aim of this work was to evaluate the application of different concentrations of ascorbic acid on Orange Flesh melon. Whole Melons were sanifi ed with 500 mg L-1 of sodium hypochlorite for 10 minutes and the cuts into cubes with 100 mg L-1 for 1 minute before being tested under different concentrations of ascorbic acid (0, 1, 2 and 3%) in immersion at room temperature for 10 minutes. After drainage, the cuts were packed in PET packages lined with polyethylene fi lm of 18 µm and stored at 5 ± 1°C and 85 ± 5% of RH for 8 days, being evaluated every 2 days. Physicochemical, microbiological and sensorial analyses were performed. The experimental design utilized for the experiment was the completely randomized in factorial scheme. Ten replicates were used for non-destructive analyses and 3 replicates were used for destructive ones. The application of ascorbic acid reduced the loss of mass; the fruits presented a low population of psychrotrophic bacterias, fi lamentous, fungi and yeasts, reduction of soluble solids, pH and fi rmness and, consequently, extended postharvest life of the fruits by 2 days. The appearance, fl avor and taste were also affected. The application of 1% of ascorbic acid was the best treatment for the fresh cuts “Orange Flesh” melons.