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Search Results: 1 - 10 of 45444 matches for " Larissa Carvalho Santos "
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Genotoxic effects of the diesel water-soluble fraction on the seahorse Hippocampus reidi (Teleostei: Syngnathidae) during acute exposure
Santos, Celina Alcoforado;Novaes, Larissa Sim?es;Gomes, Levy Carvalho;
Zoologia (Curitiba) , 2010, DOI: 10.1590/S1984-46702010000600017
Abstract: the high toxicity of diesel components makes oil spills a threat to the biota in coastal marine environments. the genotoxic effect of the diesel water-soluble fraction (dwsf) on hippocampus reidi (ginsburg, 1933) was assessed. fish were exposed to three different dwsf dilutions for up to 96 hours, and genotoxicity was analyzed using the micronuclei test and the comet assay. the micronuclei test revealed no significant differences between any of the dwsf dilutions and the control in the 24-hours period; however, micronuclei increased in fish exposed to 1:500 and 1:100 dwsf dilutions for 96 hours. for all dilutions, there was an increase in micronuclei in fish exposed for 96 hours when compared to those exposed for 24 hours. the tested dilutions increased frequencies of cell classes 2 (medium damage) and 3 (large damage) in the comet assay after 24 and 96 hours. fish exposed to dwsf 1:100 exhibited a higher frequency of class 4 (apoptosis) cells in the 96-hours period. all dilutions increased the comet score when compared to the control at 24 and 96 hours. the micronuclei and comet tests were efficient in detecting dwsf genotoxic effects in h. reidi.
Avalia??o de desempenho acústico de um consultório odontológico
Fernandes, Júlio César;Santos, Larissa Nascimento dos;Carvalho, Homero Jorge Matos de;
Produ??o , 2011, DOI: 10.1590/S0103-65132011005000030
Abstract: this work analyses the acoustic comfort of a dentistry clinic located jo?o pessoa, considering several situations of use of the space. it was developed through a physical survey of the place (dimensions and materials), identification of the performed activities, identification external and internal sources of noise and measurement of the noise levels. the noise levels measured were compared with the nbr 10.152 (abnt, 1987) norm standards. soon after, the isolation and the time of reverberation were calculated in order to solve the problem. the results show that the clinic is uncomfortable because it does not meet the acoustic standards of the norms.
Avalia o de desempenho acústico de um consultório odontológico Evaluation of acoustic performance of a dental office
Júlio César Fernandes,Larissa Nascimento dos Santos,Homero Jorge Matos de Carvalho
Produ??o , 2011,
Abstract: Este trabalho tem por objetivo a avalia o acústica de um consultório odontológico situado na cidade de Jo o Pessoa (PB), considerando diversas situa es de utiliza o do espa o. Foi realizado a partir de levantamento físico do ambiente, da identifica o das atividades desenvolvidas, da identifica o das fontes externas e internas de ruídos e da medi o dos níveis destes. Estes últimos foram comparados com a NBR 10.152 (ABNT, 1987). Em seguida, foram realizados cálculos do isolamento acústico e do tempo de reverbera o para a elabora o de solu es corretivas do problema encontrado. Constatou-se que o ambiente n o atende aos parametros acústicos e que, apesar de os níveis de ruído medidos n o causarem danos à saúde dos usuários, provocam desconforto. This work analyses the acoustic comfort of a dentistry clinic located Jo o Pessoa, considering several situations of use of the space. It was developed through a physical survey of the place (dimensions and materials), identification of the performed activities, identification external and internal sources of noise and measurement of the noise levels. The noise levels measured were compared with the NBR 10.152 (ABNT, 1987) norm standards. Soon after, the isolation and the time of reverberation were calculated in order to solve the problem. The results show that the clinic is uncomfortable because it does not meet the acoustic standards of the norms.
Anacardic Acids from Cashew Nuts Ameliorate Lung Damage Induced by Exposure to Diesel Exhaust Particles in Mice
Ana Laura Nicoletti Carvalho,Raquel Annoni,Larissa Helena Lobo Torres,Ana Carolina Cardoso Santos Dur?o
Evidence-Based Complementary and Alternative Medicine , 2013, DOI: 10.1155/2013/549879
Abstract:
Esquistossomose em área de ecoturismo do Estado de Minas Gerais, Brasil
Massara, Cristiano Lara;Amaral, Graciela Larissa;Caldeira, Roberta Lima;Drummond, Sandra Costa;Enk, Martin Johannes;Carvalho, Omar dos Santos;
Cadernos de Saúde Pública , 2008, DOI: 10.1590/S0102-311X2008000700025
Abstract: this paper discusses schistosomiasis transmission in s?o josé da serra, a village with a population of 500 in the county of jaboticatubas, minas gerais state, brazil. the area receives thousands of visitors a year for ecotourism. the study was motivated by a case of acute schistosomiasis involving a couple that spent the 2007 carnival (mardi gras) holiday in the area. stool tests from 268 local residents (53.6% of the population) showed that 35 (13%) were positive for the infection. a comparison with a previous survey (2005) in the same location showed an increase in the schistosomiasis-positive rate from 9.6% to 12.5%, among the 56 individuals who participated in both surveys. a malacological survey of 65 biomphalaria glabrata snails showed one specimen (1.5%) eliminating cercariae. in a similar survey in 2005, no positive snail specimens were found. the study indicates that active schistosomiasis transmission is occurring in the area, and that integrated educational programs are needed for both the local community and tourists.
Quality of Wood and Charcoal from Eucalyptus Clones for Ironmaster Use
Bárbara Luísa Corradi Pereira,Aylson Costa Oliveira,Ana Márcia Macedo Ladeira Carvalho,Angélica de Cássia Oliveira Carneiro,Larissa Carvalho Santos,Benedito Rocha Vital
International Journal of Forestry Research , 2012, DOI: 10.1155/2012/523025
Abstract: Considering the wide variety of species and clones of Eucalyptus cultivated in Brazil, it is necessary to search for new information on wood properties, so that the selection of genetically superior material may be successful. The present study aimed to determine the properties of wood and charcoal from different clones of Eucalyptus spp. Six clones at the age of 7.5 years were evaluated and the samples were from a clonal, located in the city of Lassance, Minas Gerais, Brazil. Basic density, chemical composition, and higher heating value were determined. Carbonizations in a laboratory kiln were done and the levels of volatile matter, ash, and fixed carbon, higher heating value, and bulk density of the charcoal produced were determined. Evaluated genetic materials showed differences in their properties. According to research results, several properties of wood should be considered together for the selection of clones for charcoal production. However, basic density and chemical composition of wood, especially high contents of lignin and low contents of extractives, are the properties that had more influence on charcoal yield and its quality. Concerning charcoal production for steelmaking, clone 6 stood out and, conversely, clone 4 showed inferior properties to those of others. 1. Introduction Area occupied by forest plantations in Brazil reached over 6,500,000?ha, of which 74.8% are Eucalyptus plantations, in 2011 [1]. In the same year, Brazilian consumption of logs from plantations of Eucalyptus for charcoal production was close to 17,000,000 cubic meters, representing 10.0% of total consumption of logs [1]. These data confirm the importance of Eucalyptus in Brazil, which has been the focus of several studies due to concerns about wood quality and homogeneity. Charcoal quality and its production depend, among other factors, on the quality of wood used, which is defined by a set of chemical, physical, mechanical, and anatomical properties, usually interdependent. Nevertheless, regarding the variations that occur in the wood quality of the above cited genus, it is necessary to study it, for this fact may bring about negative consequences in both the quality and yield of charcoal, which will negatively reflect on the operations of the iron and steel industries blast furnaces [2]. Forestry companies and Brazilian research centers have been motivated to seek solutions to produce homogeneous charcoal, with high yield, high quality, and low cost. Therefore, the technological characteristics of wood should also be considered and not only the economic and
Rui Barbosa e a reforma do ensino primário
Larissa Camacho Carvalho
BIBLOS : Revista do Instituto de Ciências Humanas e da Informa??o , 2004,
Abstract: O presente trabalho constitui um estudo da carreira de Rui Barbosa e uma análise de alguns aspectos do seu projeto sobre a Reforma do Ensino Primário. Podemos perceber a grande influência de Rui na forma o contemporanea do nosso país, mas, na educa o, esquecemos seu legado, talvez pela falta de memória histórica. Neste trabalho, procuramos apresentar, de forma resumida, algumas quest es levantadas por Rui Barbosa sobre o ensino primário e, mais especificamente, sobre a reforma no ensino de História.
Prospe??o de inibidores de serinoproteinases em folhas de leguminosas arbóreas da floresta Amaz?nica
Chevreuil, Larissa Ramos;Gon?alves, José Francisco de Carvalho;SCHIMPL, Flávia Camila;Souza, Cristiane Santos do Carmo Ribeiro de;Souza, Luiz Augusto Gomes de;Pando, Silvana Cristina;
Acta Amazonica , 2011, DOI: 10.1590/S0044-59672011000100019
Abstract: the proteinase inhibitors are proteins extensively investigated in tissue storage, but few prospected in other plant tissues. the aim of this study was to detect the presence of serine proteinase inhibitors in leaf extracts from fifteen species of leguminous trees of the amazon forest. the species studied were caesalpinia echinata, c. ferrea, cedrelinga cateniformis, copaifera multijuga, dinizia excelsa, enterolobium contortisiliquum, e. maximum, e. schomburgkii, leucaena leucocephala, ormosia paraensis, parkia multijuga, p. pendula, p. platycephala, swartzia corrugata and s. polyphylla. leaves were collected, dried at 30oc for 48 h, crushed and subjected to extraction with nacl (0.15 m, 10% w/v), resulting in the total extract. tests were performed to determine the concentration of proteins and to detect of inhibitory activity against bovine trypsin and chymotrypsin. the content of crude and soluble protein in leaf extracts varied from 7.9 to 31.2% and 1.3 to 14.8%, respectively. the inhibitory activity on trypsin and chymotrypsin was observed in all leaf extracts. however, in extracts of e. maximum, l. leucocephala, p. pendula, s. corrugata and s. polyphylla, the inhibition was greater on trypsin, while extract of p. multijuga was more effective against chymotrypsin. we conclude that leaf extracts of leguminous trees have serine proteinase inhibitors and show potential biotecnological applications.
Custo real do tratamento do glaucoma para o paciente
Pedroso, Larissa;Carvalho Junior, Edenilson dos Santos;Paranhos Júnior, Augusto;Prata Júnior, Jo?o Ant?nio;Mello, Paulo Augusto de Arruda;
Arquivos Brasileiros de Oftalmologia , 1999, DOI: 10.1590/S0004-27491999000600004
Abstract: purpose: to evaluate the cost of glaucoma treatment for an outpatient in a public university hospital. patients and methods: ninety-four outpatients were ran-domly glaucoma clinic of the ophthalmology department of the universidade federal de s?o paulo, submitted to questionnaires at the regarding personal and antiglaucoma medicine expenses. data collected, tabulated and the sample was divided into two were groups: surgical and nonsurgical. results: the median estimated total spent annually on glaucoma treatment was r$ 480.15, equivalent to 13% of the median annual family income of the patients. when the sample was divided into two groups, the figures were quite different. the surgical group had a median annual estimated total expense of r$ 667.94, equivalent to 19% of the median annual family income, whereas the nonsurgical group showed a median annual estimated total expense of r$ 393.54 or 11% of the median annual family income. sta-tistical difference was found between both groups for total annual cost (p = 0.012). conclusion: it was observed that the cost of glaucoma treatment is quite high in respect to the family income, even considering the use of a public hospital.
Tumores do corpo carotídeo: revis?o de oito casos e abordagem cirúrgica
SOUSA, ATOS ALVES DE;FAGUNDES-PEREYRA, WALTER JOSé;SANTOS, LARISSA DE SOUSA;MARQUES, JO?O ANT?NIO PINHEIRO;CARVALHO, GERVáSIO TELES CARDOSO DE;
Arquivos de Neuro-Psiquiatria , 2000, DOI: 10.1590/S0004-282X2000000200019
Abstract: carotid body tumors are rather uncommon. even though there is a great amount of literature on the subject, the controversy regarding its biological behavior and therapeutics and mainly, the surgical management still remains. we present eight patients with carotid body tumors (total of 9 tumors, one bilateral) surgically treated at the neurosurgery department of santa casa in belo horizonte, from 1989 to 1999. the age ranged from 11 to 66-years-old (35,6±17.7). four patients were women and four were men. we had satisfactory postoperative results with low morbidity and no deaths. based on our experience and on the review of the literature, some aspects of this disease are discussed. we conclude that carotid body tumors are uncommon and should be treat with carefully surgery techniques to obtain low morbimortality rates.
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