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Search Results: 1 - 10 of 164100 matches for " Luciane V. dos;Costa "
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Synthesis and antiproliferative activity of novel limonene derivatives with a substituted thiourea moiety
Figueiredo, Isis M.;Santos, Luciane V. dos;Costa, Willian F. da;Carvalho, Jo?o E. de;Silva, Cleuza C. da;Sacoman, Juliana L.;Kohn, Luciana K.;Sarragiotto, Maria H.;
Journal of the Brazilian Chemical Society , 2006, DOI: 10.1590/S0103-50532006000500020
Abstract: a series of r-(+)-limonene derivatives bearing a substituted thiourea moiety (3-13) and five s-methyl analogs (14-18) were synthesized and evaluated for their in vitro antiproliferative activity against human cancer cell lines. compounds bearing aromatic substituents (3-6) exhibit cytotastic activity in the full panel of cell lines tested, with gi50 values in the range of 2.5 to 24 μmol l-1. compounds 3, 10, 12 and 16 were the most active with gi50 values in the range of 0.41 to 3.0 μmol l-1, against different cell lines.
Synthesis, toxicity towards brine shrimp (Artemia salina Leach) and antimicrobial activity evaluation of 3,5-diphenylchlorinated-1,2,4- oxadiazoles = Síntese, toxicidade frente a Artemia salina Leach e avalia o da atividade antimicrobiana de 1,2,4-oxadiazóis-3,5-difenilclorados
Silvio Luiz Machado,Luciane Vieira dos Santos,Willian Ferreira da Costa,Benedito Prado Dias Filho
Acta Scientiarum : Technology , 2005,
Abstract: The known oxadiazoles 3,5-bis-(phenyl)-1,2,4-oxadiazole (3a); the 3-(4-chlorophenyl)-5-phenyl-1,2,4-oxadiazole (3b); and the new 3,5-diphenylchlorinated-1,2,4-oxadiazoles 3c-e were synthesized from the reaction of benzamidoximes with an appropriated acid chloride and cyclisation of the resulting O-acylbenzamidoxime intermediate. The compounds synthesized were characterized on the basis of their IR, NMR (1D and 2D) and mass spectral data. Compounds 3a-e were evaluated for their antimicrobial activity and for their toxicity towards brineshrimp (Artemia salina Leach). Os oxadiazóis 3,5-bis-(fenil)-1,2,4- oxadiazol (3a) e 3-(4-clorofenil)-5-fenil-1,2,4-oxadiazol (3b), já descritos na literatura, e, os 1,2,4- oxadiazóis-3,5-fenilclorados inéditos 3c-e, foram sintetizados pela rea o de bezamidoximas com um cloreto de ácido apropriado, seguido da cicliza o do intermediário O-acilíco resultante. Os compostos obtidos foram caracterizados com base nas análises dos dados espectroscópicos de IV, EM e RMN (uni- e bidimensionais). Os compostos 3a-e foram submetidos a bioensaios paraavalia o de atividade antimicrobiana e, de toxicidade frente ao microcrustáceo Artemia salina Leach.
Temas Ambientais Analisados em Fotogra as Aéreas. Caso Inicial de Estudo: Irati, Paraná Environmental Themes Analyzed In Aerial Photographs. Initial Case Study: Irati, Paraná
Attílio Antonio Disperati,Tania Luciane Venancio,Paulo Costa de Oliveira Filho,Gerson dos Santos Lisboa
Ambiência , 2006,
Abstract: O presente trabalho visa a identificar, listar, selecionar e analisar no elenco das fotografias aéreas disponíveis, que recobrem a área urbana de Irati e arredores, as que reportam temas ambientais que proporcionam altera es visíveis na paisagem causadas pela atividade humana. Foram selecionadas sete fotografias aéreas em escala 1:8.000 do aerolevantamento de 1997 e as seis correspondentes do aerolevantamento de 1980 em escala 1:25.000. Os cinco temas ambientais considerados foram: lavras e saibreiras, olarias, local de extra o de terra, locais de disposi o inadequada de resíduos sólidos urbanos e expans o do tecido urbano. As áreas ambientais definidas se apresentaram bem caracterizadas nas fotografias aéreas e s o relevantes economicamente ao município. A análise temporal (duas datas) permitiu a obten o de informa es sobre as condi es dos locais selecionados e as principais altera es ocorridas no intervalo de dezessete anos considerado. O material resultante da pesquisa será utilizado nas futuras aulas da disciplina de Fotogrametria e Fotointerpreta o do curso de Engenharia Ambiental.
Correlations between symptoms and DAS - Elisa values in two sources of resistance against tomato spotted wilt virus
Resende, Luciane V.;Maluf, Wilson R.;Figueira, Ant?nia dos R.;Resende, Juliano T.V.;
Brazilian Journal of Microbiology , 2000, DOI: 10.1590/S1517-83822000000200014
Abstract: the commercial tomato, lycopersicon esculentum, cultivars angela gigante i-5100 and santa clara (tospovirus susceptible), the stevens cultivar, lines and experimental hybrids (tospovirus resistant), were used: a) to evaluate two sources of resistance to tospoviruses in tomato (one from l. esculentum/rey de los tempranos, and another one from l. peruvianum/stevens); and b) to verify statistically significant correlation between virus concentration determined through das-elisa and symptomatology. in the angela gigante i-5100 and the santa clara cultivars, the correlation coefficient was highly significant and the symptom average level was high, showing that in susceptible cultivars the symptom evolution is related to the virus multiplication in the plant. as for the tom 547 and tom 556 lines (background of angela gigante i-5100 and santa clara, respectively), there was no statistical correlation between the symptoms and the viral particle concentration. plants with light virus symptoms showed high absorbance values. consequently we may assume that the resistance with `rey de los tempranos' background may be of the tolerant kind because the high virus concentration found does not necessarily relate to a high level of symptoms. in the lines bpx320e 3902-01, bpx320e 3905 and bpx320f 7902 (both with santa clara background) only few plants showed symptoms, which can be explained by incomplete penetrance of sw-5 gene. in the case of non-symptomatic plants, the diagnosis using das-elisa revealed negative results. that outcome indicates that in some materials, where resistance is obtained from l. peruvianum, the virus multiplication in the tissues seemed not be present.
Correlations between symptoms and DAS - Elisa values in two sources of resistance against tomato spotted wilt virus
Resende Luciane V.,Maluf Wilson R.,Figueira Ant?nia dos R.,Resende Juliano T.V.
Brazilian Journal of Microbiology , 2000,
Abstract: The commercial tomato, Lycopersicon esculentum, cultivars ngela Gigante I-5100 and Santa Clara (tospovirus susceptible), the Stevens cultivar, lines and experimental hybrids (tospovirus resistant), were used: a) to evaluate two sources of resistance to tospoviruses in tomato (one from L. esculentum/Rey de Los Tempranos, and another one from L. peruvianum/Stevens); and b) to verify statistically significant correlation between virus concentration determined through DAS-ELISA and symptomatology. In the ngela Gigante I-5100 and the Santa Clara cultivars, the correlation coefficient was highly significant and the symptom average level was high, showing that in susceptible cultivars the symptom evolution is related to the virus multiplication in the plant. As for the TOM 547 and TOM 556 lines (background of ngela Gigante I-5100 and Santa Clara, respectively), there was no statistical correlation between the symptoms and the viral particle concentration. Plants with light virus symptoms showed high absorbance values. Consequently we may assume that the resistance with `Rey de Los Tempranos' background may be of the tolerant kind because the high virus concentration found does not necessarily relate to a high level of symptoms. In the lines BPX320E 3902-01, BPX320E 3905 and BPX320F 7902 (both with Santa Clara background) only few plants showed symptoms, which can be explained by incomplete penetrance of Sw-5 gene. In the case of non-symptomatic plants, the diagnosis using DAS-ELISA revealed negative results. That outcome indicates that in some materials, where resistance is obtained from L. peruvianum, the virus multiplication in the tissues seemed not be present.
Hydrogeochemical Research of Surface Water of the Córrego Sujo Watershed, Teresópolis, RJ, Brazil  [PDF]
Paula Coelho Araujo, André S. Avelar, Vítor dos Santos Costa, Maria Isabel Martinez
Agricultural Sciences (AS) , 2017, DOI: 10.4236/as.2017.85033
Abstract: The surface water quality was investigated in the Córrego Sujo watershed, located in the municipality of Teresópolis, a mountainous region in the state of Rio de Janeiro, Brazil. The emphasis focused on inorganic parameters of water, since there are applications of pesticides in agricultural cultivations. The natural and anthropogenic contributions of the study area were monitored monthly in eight sites in the river channels of the drainage basin. The results were analyzed using an ICP-OES spectrophotometer and subsequently compared to Conama Resolution 357/05. In order to support the interpretation of the results of water quality, flow and precipitation data were measured in the watershed, along with the land use and vegetation cover map produced from a GeoEye satellite image. The study revealed that the surface waters were in high concentrations and above those recommended by Conama Resolution. It was noted also that the lithological and pedological variables influenced the results of water quality. Regarding seasonality, it has not been possible to establish a common standard to all elements in the rainy season or dry season, however, in the analysis of each parameter separately, there was evidence of a concentration distribution in temporal variation. Therefore, the results of this study indicate that it is also necessary to highlight these issues in the territorial planning of the municipality and in the management of the Committee of Rio Piabanha watershed, to avoid the increasing of uncontrolled expansion of irrigated crops and intensive use of agrochemical inputs.
Crescimento do perímetro cefálico nos primeiros seis meses em crian?as em aleitamento materno exclusivo
Jaldin, Maria da Gra?a M;Pinheiro, Feliciana Santos;Santos, Alcione Miranda dos;Muniz, Nivaldo Costa;Brito, Luciane Maria O.;
Revista Paulista de Pediatria , 2011, DOI: 10.1590/S0103-05822011000400007
Abstract: objective: to analyze the head circumference growth of exclusively breastfed children from birth to the sixth month of life using, as references, the national center for health statistics (nchs/1977) as well as the world health organization/2006 international standard (who/2006). methods: a longitudinal research carried out at the mother and child university hospital of the federal university of maranh?o (northeast brazil), from october 2007 to november 2008. a non-probabilistic sample of 328 singleton full term neonates, with birthweight >2500g and <4000g was enrolled, being all neonates exclusively breastfed from birth to the sixth month of life; 181 children (95 females and 86 males) completed the follow-up. the head circumference was estimated by average, standard deviation and percentiles 5, 50 and 95. percentile results were compared taking as references the nchs/1977 and the who/2006 standards. results: there was an average of 1.5cm in head circumference growth for males and 1.4cm for females per month during the first six months of life. head circumference followed the 50th percentile of the who/2006 standard for both genders. regarding the nchs/1977 standard, males presented head circumference following the 50th percentile throughout the six months, except at birth, and females followed the 50th percentile from birth until six months of life. conclusions: exclusively breastfed children presented a satisfactory head circumference growth up to the sixth month of life, in accordance with the 50th percentile of who/2006 and nchs/1977 standards.
Phage typing and Multidrug resistance profile in S. Typhimurium isolated from different sources in Brazil from 1999 to 2004
Pereira, Christiane Soares;Medeiros, Luciane Martins;Costa, Renata Garcia;Festivo, Márcia Lima;Reis, Eliane Moura Falavina dos;Seki, Liliane Miyuki;Rodrigues, Dália dos Prazeres;
Brazilian Journal of Microbiology , 2007, DOI: 10.1590/S1517-83822007000200036
Abstract: salmonella typhimurium has become a widespread cause of salmonellosis among humans and animals worldwide. in brazil, salmonella typhimurium (stm) is one of the most prevalent serovars isolated from food for human consumption. the uncontrolled sale and use of antimicrobials in agriculture and for treating human patients contributes to increase multidrug resistance of this serovar. in the present study, a total of 278 stm isolates from different sources and regions of brazil over the period 1999 to 2004 were phage typed and analyzed for their antimicrobial resistance profile at laboratory of enterobacteria, oswaldo cruz institute, fiocruz. the main stm phage types isolated were dt 193 (64.3%), dt 19 (17.4%) and dt 18 (4%). others phage types as dt 10 (2%), dt 27 (3.24%), dt 13 (0.36%), dt 22 (0.36%), dt 28 (0.36%), dt 29 (0.36%) and dt 149 (0.36%) were obtained in low percentages. a total of 54% stm strains were resistant to three or more antimicrobial classes, while no resistance to third generation cephalosporin or ciprofloxacin was identified in these strains. those results show the stm phage types circulating among animals, food for human consumption and humans in brazil as well as the increasing of multidrug resistance. the surveillance of stm strains based on phage typing and antimicrobial resistance profile are useful for detecting outbreaks, identifying sources of infection and implementing prevention and control measures.
Prevalência de coloniza??o por estreptococos do grupo B em gestantes atendidas em maternidade pública da regi?o Nordeste do Brasil
Costa, Adriana Lima dos Reis;Lamy Filho, Fernando;Chein, Maria Bethania da Costa;Brito, Luciane Maria Oliveira;Lamy, Zeni Carvalho;Andrade, Kátia Lima;
Revista Brasileira de Ginecologia e Obstetrícia , 2008, DOI: 10.1590/S0100-72032008000600002
Abstract: purpose: to assess the prevalence of group b streptococcus colonization (gbs) in pregnant women in prodrome or in labor. methods: vaginal and rectal cultures were collected from 201 pregnant women, in the admission sector of a public maternity center in the northeast region of brazil (s?o luís, maranh?o). the samples obtained were inoculated in a todd-hewith's selective culture medium and after that they were sub-cultivated in blood-agar plates. the camp (christie, atkins, munch-petersen) test was used to identify gbs, which was then serologically confirmed by the biomérieux api 20 strep kit microtest. gbs positive samples were submitted to an antibiotic sensitivity test. sociodemographic variables, gynecological-obstetrical antecedents, and perinatal outcomes were studied. the epi-info 3.3.2 programs from world health organization and statistical package for social sciences 14.0 version were used for the statistical analysis. the prevalence ratio was used as risk measure, considering p<0.05 as significance level, and accepting 80% power. results: the prevalence of sgb colonization in the mothers was 20.4%. there was no association between the sociodemographic variables or gynecological-obstetrical antecedents and a larger presence of sgb colonization. there were two cases of infectious outbreak among neonatal babies from colonized mothers, but hemocultures resulted negative. high resistance rates were found for the following antibiotics: clindamycin, 25.4%; erythromycin, 23.4% and ceftriaxone, 12.7%. conclusions: the prevalence of sgb colonization was high among the mothers, similar to what had been described in other studies. the elevated rates of antimicrobial resistance, especially to ceftriaxone indicate the need for further studies to determine the serology of this agent and of orientation protocols for rational use of antimicrobials.
Caracteres de produ??o da cebola associados à resistência a tripes
Loges, Vivian;Lemos, Margarida A.;Resende, Luciane V.;Menezes, Dimas;Candeia, Jonas A.;Santos, Venézio Felipe dos;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000400021
Abstract: the variability of yield characters associated to thrips tabaci (thysanoptera: thripidae) resistance was estimated in 62 half-sib progenies of onion cv. valeouro ipa-11. the controls were the cvs. valeouro ipa-11 and the parentals roxa ipa-3 and belém ipa-9. the experiment was conducted in field conditions, in juazeiro, bahia state, brazil, following a complete randomized block design, with three replications. the estimates of the parameters from the population of valeouro ipa-11 demonstrated high enviromental influence for all characters. the highest estimates of herdability and expected gain with 20% of selection pressure were, respectively, 35.74% and 10.39% for the production of commercial bulbs (pbc), 31.33% and -24.48% for percentage of unproductive plants (%i), 33.92% and -16.80% for production of non commercial bulbs (pbnc) and 30.31% and 13.18% for percentage of non commercial bulbs (%bnc). these characters seem to indicate better possibility of genetic progress with the selection. the characters mean infestation of immature t. tabaci on the two completely developed inner leaves (ninfa) present herdability of 18.24 and 21.34% and expected gain with 20% of selection pressure of 18.24 and -11.22% at 48 and 69 days after transplanting (dat), respectively, indicating superior gains in selections at 69 dat. although ninfa were 31.96 insects, 45.16% of valeouro ipa-11 progenies demonstrated pbc values above the average, suggesting that tolerance may be the resistance mechanism.
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