Contribuição ao conhecimento dos Odonatos da Estação Ecológica de Maracá - Roraima.

The odonatological fauna of the Maracá Ecological Station in the State of Roraima was studied using material collected in the forests and savannas of its eastern part. Out of the sixty-one species registered from the area, three are new to science(Epipleo neura, Leptobasisand Lestes)and will be described elsewhere, white eight are new records for Brazil (Aeolagrion demerarum, Argia pulla, Hetaerina mortua, Hetaerina west-falli, Metaleptobasis manicaria, Neoneura denticulata, Neoneura gaida, Protoneura amato-ria.The species with a wide geographical range, which are usually common, predominate in the savanna white those with more restricted distribution predominate in the forests. The results emphasize the great resemblance that exists between the fauna of Uaraca and that of Venezuela.Estudou-se a fauna odonatológica da Estação Ecológica de Maracá, no Estado de Roraima, com base em material coletado nas matas e campos de sua parte oriental. Foram coletadas 61 espécies das quais 3 são novas para a ciência (Epipleoneura, Leptobasisa. Lestes) e serão descritas em outro trabalho e 8 constituem novos registros para a fauna brasileira (Aeolagrion demerarum, Argia pulla, Hetaerina mortua, Hetaerina westfalli, Meta leptobasis manicaria., Neoneura denticulata, Neoneura gaida, Protoneura amatoria). Verificou-se que as espécies de grande distribuição geográfica, geralmente mais comuns, pre-dominam nas áreas de savana, enquanto nas matas predominam as de distribuição geográfica mats restrita. Os resultados ressaltam a grande semelhança que existe entre a fauna de Maracá e a da Venezuela

Quantitative image analysis of polyhydroxyalkanoates inclusions from microbial mixed cultures under different SBR operation strategies

Polyhydroxyalkanoates (PHAs) produced from mixed microbial cultures (MMC), regarded as potential substitutes of petrochemical plastics, can be found as intracellular granules in various microorganisms under limited nutrient conditions and excess of carbon source. PHA is traditionally quantified by laborious and time-consuming chromatography analysis, and a simpler and faster method to assess PHA contents from MMC, such as quantitative image analysis (QIA), is of great interest. The main purpose of the present work was to upgrade a previously developed QIA methodology (Mesquita et al., 2013a, 2015) for MMC intracellular PHA contents quantification, increase the studied intracellular PHA concentration range and extend to different sequencing batch reactor (SBR) operation strategies. Therefore, the operation of a new aerobic dynamic feeding (ADF) SBR allowed further extending the studied operating conditions, dataset, and range of the MMC intracellular PHA contents from the previously reported anaerobic/aerobic cycle SBR. Nile Blue A (NBA) staining was employed for epifluorescence microscope visualization and image acquisition, further fed to a custom developed QIA. Data from each of the feast and famine cycles of both SBR were individually processed using chemometrics analysis, obtaining the correspondent partial least squares (PLS) models. The PHA concentrations determined from PLS models were further plotted against the results obtained in the standard chromatographic method. For both SBR the predicted ability was higher at the end of the feast stage than for the famine stage. Indeed, an independent feast and famine QIA data treatment was found to be fundamental to obtain the best prediction abilities. Furthermore, a promising overall correlation (R2 of 0.83) could be found combining the overall QIA data regarding the PHA prediction up to a concentration of 1785.1 mgL-1 (37.3 wt%). Thus, the results confirm that the presented QIA methodology can be seen as promising for estimating higher intracellular PHA concentrations for a larger reactors operation systems and further extending the prediction range of previous studies.This study was supported by the Portuguese Foundation for Science and Technology (FCT) under the scope of the strategic funding of UID/BIO/04469/2013 unit and COMPETE 2020 (POCI-01-0145-FEDER-006684) and BioTecNorte operation (NORTE01-0145-FEDER-000004) funded by European Regional Development Fundunder the scope ofNorte2020 - ProgramaOperacional Regional do Norte.The authors also acknowledge the financial support to Cristiano S. Leal (PTDC/EBB-EBI/103147/2008, FCOMP-01-0124-FEDER009704) and Daniela P. Mesquita through the FCT postdoctoral grant (SFRH/BPD/82558/2011).info:eu-repo/semantics/publishedVersio

Ultrasonographic, computed tomographic, and operative findings in dogs infested with giant kidney worms (Dioctophyme renale)

Objective To compare ultrasonographic, CT, and surgical findings in dogs infested with giant kidney worms (Dioctophyme renale).Design-Case series.Animals-15 crossbred dogs infected with D renale.Procedures-Immediately after ultrasonography was performed with dogs in dorsal recumbency, sequential transverse images of the abdomen were acquired with a helical CT scanner. After plain CT, contrast CT was performed with a nonionic iodinated contrast agent. Subsequently, exploratory celiotomy was performed.Results-In the corticomedullary area of the right kidney of 12 dogs, ultrasonography revealed several ring-like structures with an echogenic wall and anechoic central area in the transverse plane and arrayed as bands in the longitudinal plane. Similar structures were observed in the abdominal cavity of 10 dogs. In 13 dogs, CT revealed loss of corticomedullary differentiation in the right kidney, with discrete uptake of contrast material in the periphery of the kidney, and several ring-like or elongated structures with a hyperdense wall and hypodense center. In 11 dogs, the same structures were observed free in the abdominal cavity. Surgery revealed that 13 dogs had a damaged right kidney that required nephrectomy. Parasites were found free in the abdominal cavity of 7 dogs.Conclusions and Clinical Relevance-Ultrasonography and CT were effective imaging methods for detecting D renale in the kidney and less effective for detecting parasites in the abdominal cavity. Care should be taken to avoid erroneously interpreting normal structures as parasites, especially in the abdominal cavity.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

A computational tool for teaching-learning of mechanical parameters in transmission lines

A transmission line (TL) design involves complex mechanical parameters that require the use of software to process the calculation. Such complexity makes teaching-learning of transmission line projects difficult. In this context, the present work aims to develop a user-friendly computational tool for educational application in the mechanical study of transmission lines. The tool was developed from Matlab software based on mathematical models of the literature. Simulations in different conditions of an uneven span of TL, including the effect of the wind and, subsequently, the wind with temperature in the TL, is presented. As result, the acting forces and graphs obtained in the tool helped to observe the behavior of the mechanical parameters in the different simulated situations. Thus, the mechanical parameters of a TL studied on theory can be obtained for different conditions with the developed tool. For more, the tool demonstrates to be a facilitator for teaching-learning due to its user-friendly interfaceCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP2016/08645-913th IEEE International conference on industry applications (INDUSCON)This work was supported by the agencies CNPq, CAPES and FAPESP (2016/08645-9), ANEEL (CPFL-PA3032) and BYD ENERGY through the PADIS progra

Ultrasonographic, computed tomographic, and operative findings in dogs infested with giant kidney worms (Dioctophyme renale)

Objective To compare ultrasonographic, CT, and surgical findings in dogs infested with giant kidney worms (Dioctophyme renale).Design-Case series.Animals-15 crossbred dogs infected with D renale.Procedures-Immediately after ultrasonography was performed with dogs in dorsal recumbency, sequential transverse images of the abdomen were acquired with a helical CT scanner. After plain CT, contrast CT was performed with a nonionic iodinated contrast agent. Subsequently, exploratory celiotomy was performed.Results-In the corticomedullary area of the right kidney of 12 dogs, ultrasonography revealed several ring-like structures with an echogenic wall and anechoic central area in the transverse plane and arrayed as bands in the longitudinal plane. Similar structures were observed in the abdominal cavity of 10 dogs. In 13 dogs, CT revealed loss of corticomedullary differentiation in the right kidney, with discrete uptake of contrast material in the periphery of the kidney, and several ring-like or elongated structures with a hyperdense wall and hypodense center. In 11 dogs, the same structures were observed free in the abdominal cavity. Surgery revealed that 13 dogs had a damaged right kidney that required nephrectomy. Parasites were found free in the abdominal cavity of 7 dogs.Conclusions and Clinical Relevance-Ultrasonography and CT were effective imaging methods for detecting D renale in the kidney and less effective for detecting parasites in the abdominal cavity. Care should be taken to avoid erroneously interpreting normal structures as parasites, especially in the abdominal cavity.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

revista do Mestrado em Teorias da arte da Faculdade de Belas Artes da Universidade de Lisboa

info:eu-repo/semantics/publishedVersio