Potential of a bacterial consortium to degrade azo dye Disperse Red 1 in a pilot scale anaerobic-aerobic reactor

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

Recovery Tests of an Hybrid Current Limiter Composed of a SFCL in Parallel to an Air-Core Power Reactor

The resistive-type superconducting fault current limiters (RSFCL) prototypes using YBCO-coated conductors have shown current limitation for medium voltage class applications for acting time up to 80 ms. By connecting an air-core reactor in parallel with the RSFCL, thus making an hybrid current limiter, one can extend the acting time for up to 1 s. In this work, we report the performance of a hybrid current limiter subjected to an AC peak fault current of 2 kA during 1 s for which within the first 80 ms the SFCL limits the current concurrently with the air-core reactor, and for the remaining 920 ms, only the air-core reactor limits the current. In order to evaluate the actual conditions for subsequent reconnection of RSFCL to the power grid, the hybrid fault current limiter was tested varying the time interval for recovery from 900 ms and 1.2 s, followed again by the concurrent operation of the hybrid limiter during 1 s (SFCL during 80 ms). From this evaluation test, the recovery time can be measured and compared using the voltage peak generated in superconducting module from the first and second fault test. The recovery time was also determined through the pulsed current method (PCM) on short-length sample test. The results showed that the fault current was limited from 1.9 kA down to 514 A after 1 cycle of 60 Hz frequency, with recovery time lower than 1.2 s for two subsequent fault current tests.

Synthesis of Structured Lipids by Enzymatic Interesterification of Milkfat and Soybean Oil in a Basket-Type Stirred Tank Reactor

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

UASB reactor effluent disinfection by ozone and chlorine

This research studied the sequential ozone and chlorine process with respect to, the inactivation of indicator bacteria and the formation of ozone disinfection byproducts in sanitary wastewater effluent. The applied ozone doses were 5, 8 and 10 mg.O3.L(-1), followed by chlorine doses of 10, 20 and 30 mg.L(-1), respectively. After the sequential ozone/chlorine process, the mean reduction in chemical oxygen demand ranged from 9 to 37%. Total coliform inactivation ranged from 1.59 to 3.73 log10, and E. coli was always <1 CFU 100 mL(-1). Ozonation resulted in the formation of aldehydes, which were not significantly impacted by the subsequent chlorine dose (P ≤ 0.05).

Sulfamethoxazole and ciprofloxacin removal using a horizontal-flow anaerobic immobilized biomass reactor

The antibiotics sulfamethoxazole (SMTX) and ciprofloxacin (CIP) are commonly used in human and veterinary medicine, which explains their occurrence in wastewater. Anaerobic reactors are low-cost, simple and suitable technology to wastewater treatment, but there is a lack of studies related to the removal efficiency of antibiotics. To overcome this knowledge gap, the objective of this study was to evaluate the removal kinetics of SMTX and CIP using a horizontal-flow anaerobic immobilized biomass reactor. Two different concentrations were evaluated, for SMTX 20 and 40 μg L(-1); for CIP 2.0 and 5.0 μg L(-1). The affluent and effluent analysis was carried out in liquid chromatography/tandem mass spectrometry (LC-MS/MS) with the sample preparation procedure using an off-line solid-phase extraction. This method was developed, validated and successfully applied for monitoring the affluent and effluent samples. The removal efficiency found for both antibiotics at the two concentrations studied was 97%. Chemical oxygen demand (COD) exhibited kinetic constants that were different from that observed for the antibiotics, indicating the absence of co-metabolism. Also, though the antibiotic concentration was increased, there was no inhibitory effect in the removal of COD and antibiotics.

Perfil de acidentes envolvendo risco biológico em profissionais de saúde de Araçatuba-SP: uma caracterização dos envolvidos

Each year individuals have sought a better quality of life and work, in this case, the science of Bio-insurance needs to keep up with technological advances and the needs of society to minimize or eliminate the risks of accidents. This study evaluated the most common accidents involving health staff from 2007 to 2011 in Araçatuba-SP. 478 accidents were recorded, and 78.7% with percutaneous involvement, 9% with intact skin, 4% with no skin intact, with 7.3 mucous and 1.05% other types of exposures. Most accidents were caused by needles with lumen (68.0%), followed by other agents (14.1%), accidents with blades (8.5%) or needles without lumen (5.5%); 3.7% did not answer and 0.2% were accidents with glasses. When checking the condition in which the accident occurred, 26.0% did not specify, 25.1% occurred in the disposal and / or handling sharp objects, 12.0% at the time of drug administration, 6.9% puncture, 3.7% occurred during recapping the needle. These data show that the most common accidents are those involving needles with lumen and / or sharp objects and due to these factors, the industry of health materials have sought alternatives to minimize such accidents as needles with protective, vacuum collection . Thus, it appears that reporting accidents is important for the development of technical and / or safer materials for patients and health workers.

Prevalência de acidentes com material biológico em um município do noroeste de São Paulo, Brasil, no período de 2007 a 2011

The objective of this study is to determine the prevalence of reports of accidents involving biological material which affected health professionals, especially dental health ones, in a city in the north­western region of São Paulo State, Brazil. Data collection was con­ducted through the notification of accidents with biological material from 2007 to 2011. There were 377 notifications, in which 353 (93.6%) had female professionals involved. The most reported type of exposure was the percutaneous in 359 cases (95.2%) followed by blood in 334 cases (88.6%) which is the most mentioned biological material in the reports. Only 21 (5.6%) notifications were from den­tal staff and occurred mostly with the dentist, 14 times (66.7%) and 16 times (76.2%) during clinical procedures. The prevalence of bio­logical accidents among dental teams was little in this time, which suggests the possibility of underreporting, in addition to being sub­ject to the partial fulfillment of the same.

Avaliação do potencial biológico de extratos hidroetanólicos de Astronium sp incorporados ou não em sistemas nanoestruturados: in vitro e in vivo: in vitro e in vivo

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

Uso de reator aeróbio de leito fluidizado com circulação como dispositivo de pós-tratamento do efluente de um reator uasb compartimentado tratando esgotos sanitários

Pós-graduação em Engenharia Civil - FEIS

O conhecimento biológico nos documentos curriculares nacionais do ensino médio: uma análise histórico-filosófica a partir dos estatutos da biologia

We analyzed the National Curriculum for Secondary Schools with respect to the ontological, epistemological, historical, social and conceptual biology. This study aims to bring information and thinking about the inclusion of history and philosophy of biology for secondary education and for teacher training. We performed an analysis of PCNEM, PCNEM+ and Curriculum Guidelines as a whole from established categories. The results indicate a predominance of the ontological view of mechanistic biology. Epistemologically, although acknowledged, the question of scientific method is rarely discussed. The historical approach and social scientific activity and scientific knowledge are recognized by the documents, but an instrumental view prevails. The conceptual aspects are comprehensive and take into account the theories of structural biology. A philosophical discussion on the biology is missing in the parameters, indicating the need for the inclusion of issues related to ideas of determinism, chance and teleology.

A sewage sludge co-composting process using respirometric monitoring method in hermetic rotary reactor

This paper has the objective of monitoring the biological activity of composting process of sewage sludge, sugarcane bagasse and ground coffee in a hermetic rotary reactor using the respirometric method in laboratory scale, in order to obtain parameters and system design for large scale projects. Another particularity of this study is the use of a hermetic reactor with gas purging cycles. Purging was performed when the percentage of oxygen reached less than 5%, thus eliminating the gaseous mixture (with elevated CO2 ratio) and the introduction of environmental air with around 21% of O2, successively until the compost was stabilized. The average purge intervals obtained were 29 h and 2 min with reactor rotation frequency of 15 min. The time of the compost stabilization was optimized in 60% if compared to the 90 days in the traditional method. The results obtained can be used to design the process in industrial scale using a simple O2 gas analyzer.

Ecologia química no controle biológico de fitófagos e respectivos predadores e parasitoides

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo químico e biológico dos fungos endofíticos Microascus sp. e Nodulisporium sp. associados à alga vermelha Asparagopsis Taxiformis

Pós-graduação em Química - IQ

Diagnóstico laboratorial de Mycobacterium spp. em Botucatu e região, utilizando a técnica Reação em Cadeia da Polimerase (PCR) em material biológico e avaliação de condições associadas

Pós-graduação em Saúde Coletiva - FMB