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Search Results: 1 - 10 of 360804 matches for " Thiago D. N.; "
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Biologia de Holhymenia rubiginosa Breddin (Hemiptera: Coreidae) em Passiflora alata (Passifloraceae)
Kolberg, Roberta;Redaelli, Luiza R;Canto-Silva, Celson R;Idalgo, Thiago D N;
Neotropical Entomology , 2009, DOI: 10.1590/S1519-566X2009000600006
Abstract: the biology of holhymenia rubiginosa breddin is described on sweet-passion-fruit, passiflora alata, and the developmental time, viability and thermal requirements of the egg stage, the developmental time and mortality of the nymphal stage, and adult longevity and reproductive parameters were assessed. insects were reared at laboratory controlled conditions (25 ± 1°c, 65 ± 10% rh, photophase 12h) on branches of p. alata, 20% honey solution and pollen. the lower thermal threshold (10.8°c) and thermal requirements (140.8 dd) for egg development were determined using four temperatures (17, 21, 25 and 30°c). the average egg development time (days) and viability were 25.4 ± 0.45, 88%; 13.2 ± 0.28, 88%; 8.8 ± 0.16, 94%; and 7.7 ± 0.17, 92%, at 17, 21, 25 and 30 ± 1°c, respectively. when reared at 25 ± 1°c, the first instar had the shortest development time (4.0 ± 0.02 days) and the second the longest (15.7 ± 3.50 days), which also had the highest mortality (75%). males and females had similar longevity (185.3 ± 17.52 days for females and 133.6 ± 18.94 days for males). females mated 33.0 ± 7.71 times, with a mean duration of 99.0 ± 9.25 min, laying 11.5 ± 2.55 eggs/female. periods of pre-oviposition, oviposition and post-oviposition were respectively 96.4 ± 18.08; 88.5 ± 23.48 and 19.3 ± 12.18 days.
The influence of prior experience with artificial fruits on the ovipositioning behavior of Anastrepha fraterculus (Diptera, Tephritidae)
Gregório, Patrícia L. F.;Sant'Ana, Josué;Redaelli, Luiza R.;Idalgo, Thiago D. N.;
Iheringia. Série Zoologia , 2012, DOI: 10.1590/S0073-47212012000200004
Abstract: the south american fruit fly, anastrepha fraterculus (wiedemann, 1830) (diptera, tephritidae), is a leading pest of brazilian fruit crops. this study evaluated how prior experience with artificial fruits containing peach and/or guabiroba pulp influenced the ovipositing behavior of a. fraterculus. insects 15-21 days old were exposed to four treatments: 1) experience with guabiroba, campomanesia xanthocarpa o. berg (myrtaceae); 2) experience with peach, prunus persica (l.) batsch (chimarrita cultivar; rosaceae); 3) experience with both fruits; and 4) no experience (naive). naive females and females experienced with guabiroba pulp and with both fruits (peach and guabiroba) oviposited and showed dragging and puncturing behavior on substrates containing guabiroba, but females that were only exposed to peach pulp did not show a preference for any substrate. the study shows that prior experience with substrate influences ovipositing behavior in a. fraterculus.
Quenching star formation at intermediate redshifts: downsizing of the mass flux density in the green valley
Thiago S. Gon?alves,D. Christopher Martin,Karín Menéndez-Delmestre,Ted Wyder,Anton Koekemoer
Physics , 2012, DOI: 10.1088/0004-637X/759/1/67
Abstract: The bimodality in galaxy properties has been observed at low and high redshift, with a clear distinction between star-forming galaxies in the blue cloud and passively evolving objects in the red sequence; the absence of galaxies with intermediate properties indicates that the quenching of star formation and subsequent transition between populations must happen rapidly. In this paper, we present a study of over 100 transiting galaxies in the so-called "green valley" at intermediate redshifts (z ~ 0.8). By using very deep spectroscopy with the DEIMOS instrument at the Keck telescope we are able to infer the star formation histories of these objects and measure the stellar mass flux density transiting from the blue cloud to the red sequence when the universe was half its current age. Our results indicate that the process happened more rapidly and for more massive galaxies in the past, suggesting a top-down scenario in which the massive end of the red sequence is forming first. This represent another aspect of downsizing, with the mass flux density moving towards smaller galaxies in recent times.
Prolonged Survival of Allografts Induced by Mycobacterial Hsp70 Is Dependent on CD4+CD25+ Regulatory T Cells
Thiago J. Borges,Bárbara N. Porto,César A. Teixeira,Marcelle Rodrigues,Felipe D. Machado,Ana Paula Ornaghi,Ana Paula D. de Souza,Fabio Maito,Wander R. Pavanelli,Jo?o S. Silva,Cristina Bonorino
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0014264
Abstract: Heat shock proteins (Hsps) are stress induced proteins with immunomodulatory properties. The Hsp70 of Mycobacterium tuberculosis (TBHsp70) has been shown to have an anti-inflammatory role on rodent autoimmune arthritis models, and the protective effects were demonstrated to be dependent on interleukin-10 (IL-10). We have previously observed that TBHsp70 inhibited maturation of dendritic cells (DCs) and induced IL-10 production by these cells, as well as in synovial fluid cells.
Irregularidade do ciclo menstrual no menacme como marcador para fatores de risco cardiovasculares na pós-menopausa
Azevedo, George D.;Duarte, Jo?o-Marcelo B.P.;Souza, Maxwell O.;Costa-e-Silva, Thiago D.N.;Soares, Elvira M.M.;Maranh?o, Técia M.O.;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2006, DOI: 10.1590/S0004-27302006000500008
Abstract: to evaluate the association between cardiovascular risk factors (cvrf) during postmenopausal years and previous menstrual irregularity during reproductive years, we performed a case-control study in 414 postmenopausal women (mean age 60.4 ± 5.5 years; bmi 25.3 ± 4.7 kg/m2). the variables assessed were: menstrual cycle characteristics at age 20-35y (independent) and records of arterial hypertension, dyslipidemia, diabetes mellitus, and coronary heart disease (dependent). statistical analysis used the chi-square test and logistic regression, adjusting for potential confounders for cardiovascular risk, with significance set at 5%. women reporting previous menstrual irregularity were associated with increased risk for some cvrf [adjusted odds ratio (or) 2.14; ci-95%= 1.02-4.48], when compared with those reporting regular menstrual cycles. stratified analysis demonstrated significant associations of previous menstrual irregularity with: arterial hypertension [or= 2.74; ci-95%= 1.39-5.41), hypercholesterolemia (or= 2.32; ci-95%= 1.17-4.59), hypertriglyceridemia (or= 2.09; ci-95%=1.10-4.33), and coronary angioplasty (or= 6.82; ci-95%= 1.44-32.18). these data suggest that a prior history of menstrual irregularity, as indicative of polycystic ovary syndrome, may be related to increased risk for cvd during postmenopausal years.
Doen?as do cérebro em Campina Grande, Paraíba: incidência
Coêlho, Thiago D. Gon?alves;
Arquivos de Neuro-Psiquiatria , 1994, DOI: 10.1590/S0004-282X1994000100008
Abstract: in this study it is shown the incidence of brain diseases in campina grande pb, brazil taking account hospitalizations under prospective payments. neurologic affections were classified according to icd-9. it is demonstrated that 3.09% of hospitalizations are due to brain diseases, mainly cerebrovascular disorders. it is evident that campina grande is included in brazil's north-east average of brain diseases representation, and this result contrasts with nation-wide results because of regional differences. mental disturbances were not included in this study because of the difficulty in obtaining data; they were classified in the other diseases group.
Isolated and painless (?) atrophy of the infraspinatus muscle: left handed versus right handed volleyball players
C?elho, Thiago D. Gon?alves;
Arquivos de Neuro-Psiquiatria , 1994, DOI: 10.1590/S0004-282X1994000400014
Abstract: the suprascapular nerve originates from the upper trunk of the brachial plexus or less frequently from the root of c5. it runs a short way and crosses the suprascapular notch. it innervates the supraspinatus muscle and the acromioclavicular and glenohumeral joints. then, it crosses the lateral edge of the spine of the scapula passing through the spinoglenoid notch, and innervates the infraspinatus muscle. these are potential sites of injury to the suprascapular nerve. three cases of suprascapular nerve entrapment causing an isolated infraspinatus muscle atrophy in volleyball players were studied. it is suggested the hypothesis that the nature of the smash, in which the athlete uses the arm violently, more than does in volleyball service or in the art of reception, is the key to the pathogenesis of the lesion in volleyball players.
Equilibrium properties of charged microgels: a Poisson-Boltzmann-Flory approach
Thiago Colla,Christos N. Likos,Yan Levin
Physics , 2014, DOI: 10.1063/1.4903746
Abstract: The equilibrium properties of ionic microgels are investigated using a combination of the Poisson-Boltzmann and Flory theories. Swelling behavior, density profiles, and effective charges are all calculated in a self-consistent way. Special attention is given to the effects of salinity on these quantities. It is found that the equilibrium microgel size is strongly influenced by the amount of added salt. Increasing the salt concentration leads to a considerable reduction of the microgel volume, which therefore releases its internal material -- solvent molecules and dissociated ions -- into the solution. Finally, the question of charge renormalization of ionic microgels in the context of the cell model is briefly addressed.
Study Bioprospecting of Medicinal Plant Extracts of the Semiarid Northeast: Contribution to the Control of Oral Microorganisms
Maria Suênia P. Silva,Deysiane O. Brand o,Thiago P. Chaves,Amaro L. N. Formiga Filho,Edja Maria M. de B. Costa,Vanda L. Santos,Ana Cláudia D. Medeiros
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/681207
Abstract: Dental pathologies can be caused by plaque-forming bacteria and yeast, which reside in the oral cavity. The bacteria growing in dental plaque, a naturally occurring biofilm, display increased resistance to antimicrobial agents. The objective was the evaluation of a preclinical assay of medicinal plants of the semiarid region from the northeast against oral pathogenic microorganism, aiming at bioprospecting a new product. The selection of plant material for this study was based on the ethnobotanical data on the traditional use of plants from the semiarid region. The thirty extracts were subjected to the determination of antibiofilm activity against gram-positive, gram-negative bacteria and yeast. The hydroalcoholic extract which showed positive antibiofilm activity against most of the microorganisms tested in agar diffusion assay was further tested for the determination of minimum inhibitory concentration (MIC) and Bioassay with Artemia salina. Plant samples tested in this study exhibited good antibiofilm activity for the treatment of oral problems. The Schinopsis brasiliensis showed greater activity for Pseudomonas aeruginosa and Staphylococcus aureus, but toxicity against Artemia salina.
Qualidade microbiológica de leite humano obtido em banco de leite
Serafini,álvaro B; André,Maria Cláudia D P B; Rodrigues,Márcia A V; Kipnis,André; Carvalho,Cynthia O; Campos,Maria Raquel H; Monteiro,érica C; Martins,Fábia; Jubé,Thiago F N;
Revista de Saúde Pública , 2003, DOI: 10.1590/S0034-89102003000600013
Abstract: objective: the objectives of the present study were to determine the prevalence of potentially pathogenic microorganisms that indicate the hygienic and sanitary conditions of human milk samples collected at a human milk bank. methods: three hundred and thirty eight (338) samples of human milk collected from a milk bank in a maternity in the municipality of goiania, in the state of goias, brazil were submitted to microbiological analysis. the latter were plated on mcconkey agar according to the type of bacteria. among the total number of samples collected, 194 consisted of raw milk and the remaining 144 were pasteurized milk. results: the presence of staphylococcus spp., streptococcus spp., yeasts and molds, and enterobacteriaceae was verified in the raw milk samples. staphylococcus aureus were isolated in 10 (5.2%) samples, staphylococcus epidermidis in 28 (14.4%) samples, streptococcus spp. in three (1.6%) samples, yeasts and molds in 43 (22.2%) and enterobacteriaceae in 49 (25.3%) samples. in a hundred and forty four (144) samples which underwent thermal treatment staphylococcus aureus was detected in five (3.5%) samples, staphylococcus epidermidis in 15 (10.4%), staphylococcus lugdenensis in two (1.4%), streptococcus spp. in four (2.8%), yeasts and molds in 37 (25.7%), and enterobacteriaceae in nine (6.3%). conclusions: analysis indicated a high degree of contamination in raw human milk, and as for the pasteurized milk, despite elimination of the great majority of potentially pathogenic microorganisms, the percentage of yeasts and molds was higher than in raw milk, demonstrating that a lower degree of initial contamination would be necessary for pasteurization to be an efficient means of microbiological control.
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