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103 results on '"Silva, M.E."'

19. An epidemiological study of Haemophilus influenzae at a Brazilian day care center

Author

Bonifácio da Silva M.E. and Marin J.M.

Subjects
Haemophilus influenzae, day care, colonization, Infectious and parasitic diseases, RC109-216, Microbiology, QR1-502
Abstract

Day care centers are a relatively new phenomenon in Brazil that bring together large numbers of young children susceptible to contagious diseases. Haemophilus influenzae (Hi) is an important infection in the age range of those attending day care centers. In the present study, the carriage rate of Haemophilus influenzae was identified in 38 day care attendees age 6 to 37 months, and 23 staff members, at a day care center in Ribeirão Preto-São Paulo, in 1997. To identify the carriers, two nasopharyngeal swabs were collected; one in July and one in December. The rate of H. influenzae carriers among the children was 77%. Only 2 of 23 staff members (9%) had Hi. Among the children, there were 58 isolates in the two sampling periods; 6 of the Hi were serotype b, 1 was serotype e, and 48 isolates were non-typeable. Two were identified as H. parainfluenzae. One adult had a non-typeable Hi and 1 had H. paraphrohaemolyticus. Three of the 6 children with type B had received a conjugate vaccine against H. influenzae type b, but they still carried this bacterium in the nasopharynx (50%). Forty ribotype patterns were found among the isolates, showing a high exchange rate of nontypeable H. influenzae carriers. The results indicate that, because of the high and changing biotype of Hi carriage, day care centers should be carefully monitored as potential point source of HI disease in the community.

Published
2001

20. A generalization of chromatic polynomial of a graph subdivision

Author

Cardoso, D.M., Silva, M.E., and Szymanski, J.

Subjects
Mathematics
Abstract

Considering the partitions of a set into nonempty subsets, we obtain an expression for the number of all partitions of a given type. The chromatic polynomial of a graph subdivision is generalized, considering two sets of colors, and a general explicit expression is obtained for this generalization. Using these results, we determine the generalized chromatic polynomial for the particular case of complete graph subdivision., UDC 519.17 1. Introduction One of the most important problems studied in graph theory is the coloring of the vertices of a graph. A proper vertex-coloring is color assignment to [...]

Published
2012

22. Contributor contact details

Author

Wang, Youjiang, primary, Hawley, Jana M., additional, Gulich, Dipl Ing Bernd, additional, Peoples, Robert, additional, Realff, Matthew, additional, Schneider, Reinhold, additional, Buschle-Diller, Gisela, additional, Langley, Kenneth D., additional, Kim, Yong K., additional, George, Brian R., additional, Abreu, Maria J., additional, Silva, M.E., additional, Schacher, L., additional, Adolphe, D., additional, and Muzzy, John, additional

Published
2006
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26. Cuantificación del impacto en el uso de recursos naturales y el medio ambiente de diversos sistemas productivos agrícolas por taxonomía organizacional

Author

ROSAS, F., ARBELETCHE, P., MAZZILLI, S., SILVA, M.E., PELOCHE, D., and MONDELLI, M.

Subjects
RECURSOS NATURALES, MEDIO AMBIENTE
Abstract

Propósito: Existen ciertos modelos organizacionales que promueven sistemas productivos que son más sustentables desde el punto de vista de la conservación de losrecursos naturales y medioambiente. Esas diferencias responden a incentivos diferentes en torno al uso y conservación de los recursos, y tienen impacto diferencial en atributos ambientales.

Published
2019

39. Efeito da ingestão crônica de etanol na modulação da resposta inflamatória granulomatosa no fígado de camundongos infectados por Schistosoma mansoni

Author

Castro, L.P.F., Bambirra, E.A., Coelho, P.M.Z., and Silva, M.E.

Subjects
Ethanol, Schistosomiasis mansoni, Modulation of granulomatous inflammation
Abstract

We studied the role of ethanol on the modulation of liver granulomata around Schistosoma mansoni eggs in mice. Albino mice, receiving 7% ethanol as the sole drinking liquid, at 60 and 90 days post-infection, presented smaller granulomata than controls did, when sacrificed at 120 days post-infection. No differences in diameters could be observed, when ethanol was given 4 months before up to 120 days after infection. The results suggested that modulation of schistosome granulomata by ethanol ingestion varies with time and duration of drug consumption. Estudamos a modulação da resposta inflamatória granulomatosa em torno de ovos de S. mansoni no fígado de camundongos albinos (Mus musculus), que receberam 7% de etanol como única fonte de líquido. Os animais que receberam etanol aos 60 e 90 dias após a infecção apresentaram granulomas menores do que os controles, quando sacrificados aos 120 dias após a infecção. Não houve diferença no diâmetro dos granulomas quando a ingestão de etanol foi iniciada 4 meses antes e prolongada até 120 dias após a infecção. Nossos resultados indicam que a modulação da inflamação granulomatosa varia de acordo com o tempo e a duração da ingestão do etanol.

Published
1993

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