Condições higiênico-sanitárias e de manejo de rebanhos leiteiros correlacionados à qualidade do leite cru refrigerado

Pós-graduação em Medicina Veterinária - FCAV

Identificação e avaliação da resistência antimicrobiana de leveduras em vegetais minimamente processados

The consumption of minimally processed vegetables has been growing due to consumer demand for products easy to prepare. As it is extremely manipulated, this product can be contaminated with spoilage organisms such as yeasts, that have the ability to decrease the shelf life of food. In this sense, seeking to concerns about the resistance of microorganisms to sanitation methods for food industries and given the need for more studies of the antimicrobial power of ozone, this study aimed to isolate and identify the yeasts present in minimally processed vegetables, and check their antimicrobial resistance to sodium hypochlorite and ozone. 84 samples of minimally processed vegetables were collected. From them, 47 yeast cultures were isolated and submitted for identification and testing of resistance to sodium hypochlorite sanitizers (50, 100, 200 and 400 ppm) and ozone (0.25 and 0.5 ppm). From the total yeast isolated, 85.1% corresponds to Cryptococcus laurentii, 12.8% to Arxula adeninivorans and 2.1% to Debaryomyces hansenii var. fabryii. All of them were resistant to the sanitizers sodium hypochlorite and ozone at all concentrations tested. Given these observations, some actions must be taken during processing to avoid contamination with deteriorative microbiota.

Estudo dos fatores de virulência e resistência à oxacilina em Staphylococcus spp. isolados de aspirado traqueal de pacientes em ventilação mecânica internados em UTI

Patients that are mechanically ventilated in ICUs are constantly exposed to different pathogens, which present multiantibiotic resistance. Among these microorganisms, is MRSA (Meticillin-Resistant Staphylococcus aureus) considered to be a therapeutic challenge due to its resistance to β-lactam antibiotics. Therefore, this study proposed to identify species of Staphylococcus spp. isolated from mechanically ventilated patients in ICU, the gene mecA detection and the genes of the enterotoxins A (sea), B (seb), C (sec-1) and D (sed) in samples of S. aureus, as well as the phenotypic resistance determination to oxacillin using the disc-diffusion method with discs of oxacillin and cefoxitin. The samples collection occurred during in a period of 19 months, obtaining samples from 232 patients. A percentage of 39% (70) of Gram-positive cocci were found; which 82,8% (58) were identified as Staphylococcus spp,. among these, 75,8% (44) corresponded to S. aureus species and 47,7% were identified as MRSA. It was found resistance to both drugs in 31,8% of the S. aureus samples, 16 (36,3%) had the gene sea and 11 (25%) had the sec-1 gene. Among the coagulase-negative staphylococci obtained, the species most found was S. epidermidis, corresponding to 43% (6). The results revealed that one of the most important etiologic agents of VAP amid the Gram-positive cocci is the species S. aureus, with special attention to MRSA. The presence of enterotoxins genes in S. aureus did not showed determinant role in VAP, but the presence of these superantigens can contribute worsening the patient’s prognosis, since they are associated with intense inflammatory response

Estudo do aumento no diâmetro do corpo de um rebite a ser cravado em furos acima da tolerância de projeto

In this work are discussed the main types of rivets, their characteristics and applicability within the Aeronautical Industry branch. Here are highlighted the solid rivets, showing off its layout, forms and limits of installation, that are required by aviation regulators. The riveting is a popular and simple procedure of fixing and joining two or more parts, and like any other manufacturing process is subject to process deviations that in some situations are beyond the limits of tolerance. One of these deviations is when the hole diameter exceeds the one proposed in project and which is limited by the rule of edge distance. The overall objective here is to study a possible solution to this problem: the installation of a rivet that has his diameter previously increased by compression. Observe the hole filling after riveting, detect the presence of cracks, discover the yield curve of the fasteners and their the crushing limits for failure prediction are tools used to verify this proposal. They demonstrate, at the end of study, the inefficiency of this procedure, with results that go against the safe fixing of parts in a structure

Biofilme estafilocócico: prevenção, detecção da produção e determinação do perfil de resistência a antimicrobianos

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

Efeito da aspersão de água sobre a contaminação microbiológica em esteiras transportadoras de cortes de frango

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Critérios para o manejo da adubação nitrogenada na cultura do feijão utilizando clorofilômetro portátil

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

Dinâmica do nitrogênio em sistemas de produção sob semeadura direta

Pós-graduação em Agronomia (Agricultura) - FCA

Fontes e manejo de nitrogênio na cultura da batata em solos arenosos

Pós-graduação em Agronomia (Agricultura) - FCA

Análise microbiológica da exposição das roscas dos implantes osseointegráveis no seio maxilar de ovelhas

Pós-graduação em Odontologia - FOA

Análise molecular de estirpes de Escherichia coli enteropatogênica (EPEC) isoladas de animais e humanos

Pós-graduação em Microbiologia Agropecuária - FCAV

Adubação nitrogenada para consórcio de alface e rúcula

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Efeito do uso do solo sobre seus atributos na microrregião de Chapadinha-MA

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Aplicação de cinza de bagaço de cana-de-açúcar nos atributos químicos e biológicos do solo

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Potencial de uso agrícola de levedura seca inativa de cana-de-açúcar e de resíduos orgânicos

Pós-graduação em Agronomia (Ciência do Solo) - FCAV