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Search Results: 1 - 10 of 219394 matches for " Jussara P.;Costa "
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Serological findings during a measles outbreak occurring in a population with vaccine coverage
Oliveira, Solange A.;Siqueira, Marilda M.;Costa, Antonio J.L.;Almeida, Maria T.C.;Nascimento, Jussara P.;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1995, DOI: 10.1590/S0036-46651995000500007
Abstract: from march 1991 to april 1992, serum samples for igm detection were collected from 112 clinical measles cases reported to the health department of niterói, state of rio de janeiro. the positivity exceeded 90% for specimens collected from the 5th to the 29th day after the onset of the disease. after day 30 a decline in igm detection was observed, although positivity has been detected up to 90 days after the onset of the symptoms. forty-four patients (48.9%) with an igm response had a history of prior measles vaccination. in 5 of the 22 measles-igm negative cases the infection was due to other agents (rubella: 4 cases, dengue: 1 case). these results show that sensitivity of the test employed for confirming suspected measles cases is high, even in vaccinated patients.
Screening of the odour-activity and bioactivity of the essential oils of leaves and flowers of Hyptis Passerina Mart. from the Brazilian Cerrado
Zellner, Barbara D.;Amorim, Ana Carolina L.;Miranda, Ana Luisa P. de;Alves, Ruy J. V.;Barbosa, Jussara P.;Costa, Gisela L. da;Rezende, Claudia M.;
Journal of the Brazilian Chemical Society , 2009, DOI: 10.1590/S0103-50532009000200018
Abstract: the chemical profile of the essential oils obtained from the leaves and flowers of hyptis passerina mart., a rare species of the brazilian cerrado, has been determined for the first time. analyses by gc-ms showed sesquiterpenes as major compounds. β-epi-acorenol (35.7% and 32.8%, respectively from leaf and flower essential oils), was isolated and identified by 1d and 2d nmr. the flower-derived oil presented a higher concentration of hydrocarbon and oxygenated monoterpenes, while the leaf-oil was richer in diterpenes. the global odour impressions of both oils were given by direct analysis and gc-ms-o and were characterized as herbaceous with tea notes, and green, cooked and woody impressions for leaf-oil; herbaceous, with spicy, woody and minty notes for flower-oil. β-epi-acorenol, spathulenol, β-caryophyllene, and caryophyllene oxide were relevant for the odour-activity of both oils, as well as minor constituents, such as linalool. the antimicrobial activity was investigated by means of agar diffusion disc method and contact bioautography, against gram-positive and negative bacteria and yeast. both oils presented to be bioactive against the tested microorganisms with significant inhibition level.
Novel aminonaphthoquinone mannich bases derived from lawsone and their copper(II) complexes: synthesis, characterization and antibacterial activity
Neves, Amanda P.;Barbosa, Cláudia C.;Greco, Sandro J.;Vargas, Maria D.;Visentin, Lorenzo C.;Pinheiro, Carlos B.;Mangrich, Ant?nio S.;Barbosa, Jussara P.;Costa, Gisela L. da;
Journal of the Brazilian Chemical Society , 2009, DOI: 10.1590/S0103-50532009000400015
Abstract: a series of novel mannich bases (hl1-hl13) derived from 2-hydroxy-1,4-naphthoquinone (lawsone), substituted benzaldehydes [c6h2r1r2r3c(o)h] and various primary amines (nh2r4, r4 = n-butyl, benzyl, allyl, 2-furfuryl), and their cu2+ complexes, [cu(l1)2]-[cu(l13)2], have been synthesized and fully characterized by analytical and spectroscopic methods. the structures of complexes 1(r1 = r2 = r3 = h; r4 = bu), 2(r1 = r3 = h; r2 = no2; r4= bu) and 7 (r1 = oh; r2 = r3 = h; r4= bu) were determined by single crystal x-ray diffraction studies. all complexes crystallize in centrosymmetric space groups, with a copper atom in the inversion centre. two l- coordinate through the naphthalen-2-olate oxygen and secondary amine-n atoms, forming six-membered chelate rings around the copper atom in a trans-n2o2 environment; spectroscopic data confirm that the other complexes exhibit similar molecular arrangement. the antimicrobial activity of all compounds has been tested on seven different strains of bacteria: bacillus cereus, bacillus subtilis, escherichia coli, enterococcus faecalis, klebsiella pneumoniae, pseudomonas aeruginosaand staphylococcus aureus. in general, mannich bases were more active than complexes, hl11(r1 = oh; r2 =h; r3 = me; r4= bn) and hl13(r1 = oh; r2 = h; r3 = br; r4= bn) being the most potent inhibitors. the mic for the most active compound hl11against s. coliwas 20 μmol l-1 (8 μg ml-1), better than chloramphenicol (90 μmol l-1) and well below most values reported for other naphthoquinones.
Measles antibody prevalence after mass immunization campaign in Niterói, State of Rio de Janeiro, Brazil
Oliveira, Solange A;Siqueira, Marilda M;Mann, George F;Costa, Ant?nio José L;Almeida, Maria Teresa C.N.;Stavola, M?nica S;Tomasini, Hugo;Nascimento, Jussara P;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1996, DOI: 10.1590/S0036-46651996000500006
Abstract: three months after a mass vaccination campaign (coverage: 100%) against measles a random seroepidemiological survey was carried out in students aged 1 to 19 years old in the municipality of niterói, state of rio de janeiro. blood samples were tested for measles antibodies by enzyme immunosorbent assay (eia) and negative cases were tested again using hemagglutination inhibition (hi) and plaque reduction neutralization (prn). of the 798 samples tested by eia, 718 (90.2%) were positive for measles antibodies. prn test was more sensitive than eia and hi in detecting measles specific antibodies. the total antibody prevalence increased from 90.2% to 93.2% when hi was employed in eia negative specimens and to 98.9% when prn was used. after the mass vaccination campaign a marked decrease in measles incidence was observed in the municipality studied, showing the effectiveness of the strategy used for measles control in developing countries.
Galhas de insetos da Reserva Biológica Estadual da Praia do Sul (Ilha Grande, Angra dos Reis, RJ)
Maia, Valéria Cid;Oliveira, Jussara Costa de;
Biota Neotropica , 2010, DOI: 10.1590/S1676-06032010000400028
Abstract: thirty-six morphotypes of insect galls were recorded for the first time in the reserva biológica estadual da praia do sul (ilha grande, angra dos reis, rj), being the majority of them comprised of leaf galls (64%). stem and bud galls were also found (25 and 14%, respectively). myrtaceae were the plant family with the greatest richness of insect galls. mikania sp. (asteraceae) and guapira opposita (nyctaginaceae) were the super host plant species. the most important galling group was the cecidomyiidae (diptera), responsible for 75% of the gall morphotypes. hemipteran and lepidopteran galls were also recorded (11 and 2.8%, respectively).
Mobilidade do paclobutrazol em um solo franco-arenoso cultivado com manga no nordeste brasileiro
Costa, Maria Aparecida;Tornisielo, Valdemar Luiz;Regitano, Jussara Borges;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000500038
Abstract: in mango cultivation under brazil conditions paclobutrazol (pbz), a growth regulator, is very used. however it is not yet well known about the leaching potential of pbz in these soil conditions. the objectives of this study were to evaluate sorption and mobility of paclobutrazol (pbz), a growth regulator of the chemical group triazol, in a sandy loam soil found in the sub-mid region of the san francisco river valley, where mango cultivation is intense. the sorption study was based on isotherms, at five different concentrations (1.24; 2.48; 5.08; 10.22; and 20.52 mg l-1), using the radioisotope (14c-pbz) as tracer. desorption was evaluated after discarding the supernatant and further addition of 0.01 mol l-1 cacl2 solution, and repeating the entire process four times. the pbz mobility was evaluated in packed soil columns, under an evenly distributed rainfall simulation of 300 mm for 72 h. the pbz detected low sorption potential in the studied soil (kf = 1.06 mg1-n ln kg-1; kd (mean) = 0.83 l kg-1 and koc (mean) = 165.7 l kg-1), corresponding to a mean of 24.7 % of the applied amount. after desorption, only 5.3 % of the applied pbz was still sorbed to the soil particles, thus 19.4 % of the applied amount was desorbed to the soil solution. therefore, 75.3 % of the applied pbz remained in solution after sorption and 19.4 % was desorbed, totalizing an amount of 94.7 % of the compound available in the soil solution. however, only 0.83 % of the applied pbz leached through the soil columns, but 43.7 % of the applied amount was transported below the upper 10 cm of the soil profile. pbz mobility was therefore lower than expected, even when taking the high sand (77.5 %) and low organic c (5 g dm-3) soil contents into consideration and that rainfall simulation was rather intense (300 mm). nevertheless, the possibility of leaching could not be ruled out in view of the pbz mobility in the soil profile.
Species composition and abundance of the benthic community of Axiidea and Gebiidea (Crustacea: Decapoda) in the Marapanim Bay, Amazon estuary, northern Brazil
Silva, Dalila Costa;Martinelli-Lemos, Jussara Moretto;
Zoologia (Curitiba) , 2012, DOI: 10.1590/S1984-46702012000200007
Abstract: the thalassinideans (axiidea and gebiidea) encompasses approximately 615 species with reclusive habits, generally confined to extensive galleries burrowed into the sand or mud and, more rarely, in openings in reefs or the cavities of sessile animals such as sponges and coral. these species use the galleries for shelter, feeding and breeding, except during the pelagic larval stage. they inhabit estuaries, bays, lagoons, beaches, seas and both tropical and temperate oceanic areas throughout the world, distributed predominantly in the intertidal zone (mid-littoral and infralittoral zones). the aim of the present study was to assess the species composition and abundance of thalassinideans, comparing two micro-habitats (consolidated and non-consolidated substrates), and determine whether there is a correlation between abundance of the organisms and time of the year, collection sites or salinity. twelve monthly samplings were carried out between august 2006 and july 2007 over consolidated and non-consolidated bottoms of the upper and lower portions of the mid-littoral zones, with three sub-samplings, totaling 48 monthly samples and 576 in all. a total of 651 individuals were collected - 114 lepidophthalmus siriboia felder & rodrigues, 1993 and 537 upogebia vasquezi ngoc-ho, 1989. there was correlation between the abundance of both species and salinity, but u. vasquezi was more abundant in the rainy season. lepidophthalmus siriboia appears to prefer non-consolidated substrates, whereas u. vasquezi prefers consolidated substrates. the recruitment period for the callianassid l. siriboia appears to occur in just two periods of the year and is more intense in the dry season, whereas u. vasquezi is more frequent throughout the year. the smallest and largest sizes (carapace length - cl) recorded for l. siriboia were smaller than those recorded for the species in northeastern region of brazil. cl values for ovigerous females suggest that u. vasquezi reaches sexual maturity at a s
Species composition and abundance of the benthic community of Axiidea and Gebiidea (Crustacea: Decapoda) in the Marapanim Bay, Amazon estuary, northern Brazil
Dalila Costa Silva,Jussara Moretto Martinelli-Lemos
Zoologia (Curitiba) , 2012, DOI: doi: 10.1590/s1984-46702012000200007
Abstract: The thalassinideans (Axiidea and Gebiidea) encompasses approximately 615 species with reclusive habits, generally confined to extensive galleries burrowed into the sand or mud and, more rarely, in openings in reefs or the cavities of sessile animals such as sponges and coral. These species use the galleries for shelter, feeding and breeding, except during the pelagic larval stage. They inhabit estuaries, bays, lagoons, beaches, seas and both tropical and temperate oceanic areas throughout the world, distributed predominantly in the intertidal zone (mid-littoral and infralittoral zones). The aim of the present study was to assess the species composition and abundance of thalassinideans, comparing two micro-habitats (consolidated and non-consolidated substrates), and determine whether there is a correlation between abundance of the organisms and time of the year, collection sites or salinity. Twelve monthly samplings were carried out between August 2006 and July 2007 over consolidated and non-consolidated bottoms of the upper and lower portions of the mid-littoral zones, with three sub-samplings, totaling 48 monthly samples and 576 in all. A total of 651 individuals were collected - 114 Lepidophthalmus siriboia Felder & Rodrigues, 1993 and 537 Upogebia vasquezi Ngoc-Ho, 1989. There was correlation between the abundance of both species and salinity, but U. vasquezi was more abundant in the rainy season. Lepidophthalmus siriboia appears to prefer non-consolidated substrates, whereas U. vasquezi prefers consolidated substrates. The recruitment period for the callianassid L. siriboia appears to occur in just two periods of the year and is more intense in the dry season, whereas U. vasquezi is more frequent throughout the year. The smallest and largest sizes (carapace length - CL) recorded for L. siriboia were smaller than those recorded for the species in northeastern region of Brazil. CL values for ovigerous females suggest that U. vasquezi reaches sexual maturity at a smaller size than L. siriboia.
Use of medicinal plants by the Enfarrusca community in Bragan a, Pará
Jussara Costa de Freitas,Marcus Emanuel Barroncas Fernandes
Boletim do Museu Paraense Emílio Goeldi : Ciências Naturais , 2006,
Abstract: The Ethnobotany focalizes the way how different human groups interact with vegetation. The current study was carried out at the community of Enfarrusca, Bragan a, Pará, aiming to register the importance of utilization of local medicinal plant species. Data colletcion occurred between November, 2004 and June, 2005. Fourty-seven questionaries were applied by using two different techniques: 'Listagem Livre' (enterview by structured questionaries) and 'Check List' (list of inventoryed plants). For all medicinal plant species from the inventory previously carried out by the project Projeto Manejo de Capoeira speciemens to produce exsicatas were collected, which are deposited at the herbarium of EMBRAPA Oriental, Belém, Pará. Most of interviewees were born and live at Enfarrusca, and has agriculture as the main activity. The 28 species of medicinal plants used by this community seem to be useful as palliative method against diseases called 'not serious'. Barks and leaves were the parts of the plants more used in the preparation of homemade medicines, that are useful in many different treatment techniques, such as: 'fric o', 'emplastro', tea, 'banho' and asseio'. The knowledge on these plants and their therapeutical procedures is transmitted at familiar level, mainly by parents. Such a therapeutical system found at Enfarrusca is basically syncretic, mixing elements from indigenous and European cultures. Once the knowledge is reached, it can bring practical results, giving a basis to implement healthy systems more adapted to the culture and conditions of the region.
Theoretical studies of the tautomerism in 3-(2-R-Phenylhydrazono)-naphthalene- 1,2,4-triones: synthesis of copper(II) complexes and studies of antibacterial and antitumor activities
Francisco, Acácio I.;Vargas, Maria D.;Fragoso, Thaís P.;Carneiro, J. Walkimar de M.;Casellato, Annelise;Silva, Fernando de C. da;Ferreira, Vitor F.;Barbosa, Jussara P.;Pessoa, Claudia;Costa-Lotufo, Letícia V.;Marinho Filho, José D. B.;Moraes, Manoel O. de;Mangrich, Antonio S.;
Journal of the Brazilian Chemical Society , 2010, DOI: 10.1590/S0103-50532010000700017
Abstract: dft calculations using the b3lyp and pbe1pbe functionals with the standard 6-31g(d) and 6-311+g(2d,p) basis sets were carried out for the 3-(2-phenylhydrazone)-naphthalene-1,2,4-trione system in solution (dmso) and in the gas phase, and showed the keto-hydrazone forms (rotamers ia and ib) to be more stable than the enol-azo forms (rotamers iia and iib, by about 14 kcal mol-1) and iii (by approximately 6 kcal mol-1), independently of the nature of the substituent in the phenylene ring. these results were confirmed by spectroscopic data on the derivatives hl1-hl13, obtained from 2-hydroxy-1,4-naphthoquinone and arylamines (r = 4-ome, 4-n2-c6h5, 4-cl, 4-i, 3-i, 2-i, 4-cooh, 3-cooh, 4-cn, 3-cn, 4-no2, 3-no2, 2-no2). the in vitro antitumor (against sf-295, hct-8, mdamb-435 and hl-60 cancer cell lines) and antibacterial activities (bacillus cereus, bacillus subtilis, enterococcus faecalis, staphylococcus aureus, escherichia coli, klebsiella pneumonia and pseudomonas aeruginosa) of compounds hl1-hl13 and of their respective copper(ii) complexes, [cu(l1-13)2], were tested. in general, these compounds exhibited low antibacterial activity, except for hl5 (r = 3-i), more active than the control; however, the corresponding complex was inactive. in contrast, increased cytotoxicity was observed upon complexation. complex [cu(l13)2] (r = 3-no2) presented moderate cytotoxicity against human leukemia (hl-60).
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