Francisco Pereira de Souza - Academia.edu (original) (raw)

Papers by Francisco Pereira de Souza

Pesquisa Agropecuaria Brasileira, 1988

Linha D'Água, 2012

voz pode, de alguma maneira, representar a classe dos desfavorecidos ou subalternos. Palavras-cha... more voz pode, de alguma maneira, representar a classe dos desfavorecidos ou subalternos. Palavras-chave: estudos culturais e pós-coloniais; literatura brasileira; Patativa do Assaré; representação social; identidade cultural.

Revista Brasileira de Geofísica, 2006

Floresta e Ambiente, 2010

Este trabalho avaliou a micobiota do solo de uma duna nos terços inferior, médio e superior de en... more Este trabalho avaliou a micobiota do solo de uma duna nos terços inferior, médio e superior de encosta, localizada na Restinga da Marambaia, RJ. A área de estudo com aproximadamente 500 m 2 está dividida em três terços, com a vegetação variando de arbustiva a arbórea. Foi delimitada uma gleba de dimensões de 50 x 50 m, onde foram abertas cinco minitrincheiras até a profundidade de 10 cm para coleta, sendo coletadas três amostras compostas formadas a partir da reunião de cinco amostras simples para análise do solo e caracterização da micobiota. A fertilidade do solo indicou que o terço inferior apresentou maiores teores de alumínio e menores de nutrientes. As unidades formadoras de colônias de fungos variaram de 4,6 x 10 3 a 9 x 10 4 ufc.g-1. Quarenta e nove fungos, num total de 85 isolados, pertencentes a 13 gêneros e 32 espécies foram identificados. Os gêneros mais frequentes foram Penicillium, Aspergillus e Trichoderma. A maior riqueza ocorreu no terço médio, porém uma espécie (Trichoderma pseudokoningi) foi comum entre as áreas. Este trabalho sugere que a Restinga da Marambaia apresenta grande diversidade fúngica.

Revista Brasileira de Zootecnia, 2005

Com o objetivo de reavaliar agronomicamente 17 linhagens de guandu, originárias de acessos anteri... more Com o objetivo de reavaliar agronomicamente 17 linhagens de guandu, originárias de acessos anteriormente selecionados por diversas características de interesse agronômico, foram instalados experimentos em cinco locais do Estado de São Paulo. A confirmação dessas características foi necessária, uma vez que as amostras de sementes dos acessos originais apresentavam mistura mecânica e segregação, razão pela qual, após serem selecionados, os acessos passaram por processo de purificação em condições controladas de polinização. Nesses experimentos, as linhagens foram submetidas a cortes para avaliação da produção de forragem, ocasião em que foram determinados o número de plantas na área útil da parcela e a altura média dessas plantas. Foi também determinado o teor de proteína bruta e de taninos de amostras da forragem produzida. Entre as linhagens testadas, g58-95 e g127-97 confirmaram ter plantas de baixa estatura, g3-94, g167-97 e g29b-94 confirmaram oferecer boas produções de forragem ...

In this paper, we define the SMART BASE G architecture and show the preliminary results we have o... more In this paper, we define the SMART BASE G architecture and show the preliminary results we have obtained in some experiments. Our proposal considers that the domain of Data Mining (DM) can be represented in terms of an ontology containing the definition of the main concepts involved in its algorithms. We also use ontology to describe some characteristics of a computational grid. This declarative feature of the architecture enables its dynamic optimization layer to decide how to transform procedures of DM applications into Grid-adapted tasks and submit them to the Grid layer, aiming at resulting in efficient load balancing. To do that, the optimization layer uses a knowledge base that makes heuristics explicit based on DM and Grid knowledge. SMART BASE G also offers components that facilitate the development of DM applications for Grids.

Neotropical Entomology, 2006

Conilon" Coffee Berries Bored by Hypothenemus hampei (Ferrari) (Coleoptera: Scolytidae): What Mat... more Conilon" Coffee Berries Bored by Hypothenemus hampei (Ferrari) (Coleoptera: Scolytidae): What Matters if they Drop down During the Fruiting Phase? ABSTRACT-Falling of berries bored by Hypothenemus hampei (Ferrari) may be the major loosing factor during the fruiting period. However, only those bored berries which remain in the soil surface before a new yielding period have been recognized as responsible for the damage level Ho achieved by new developing berries. In this paper, we investigated in the plants and in the soil surface, the presence of Coffea canephora cv. Conilon berries bored by H. hampei during the yielding period in Ouro Preto d'Oeste, Rondônia, Brazil. We took samples, weekly, from December 2000 to June 2001. The data were submitted to the Surviving Regression Analysis, based on a censored Weibull model. During the yielding period, berries fall down continuously and, in average, the proportion of H. hampei bored berries was 4 to 20 times higher in the soil (P < 2,3x10-18 , n = 62,747) than in the plants. Thus, we argue that adding the "soil environment" to the integrated management strategies could point to new technologies for the control of this insect.

Mycotaxon, 2011

ABSTRACT A new arbuscular mycorrhizal fungus, Cetraspora helvetica, was found in three Swiss agri... more ABSTRACT A new arbuscular mycorrhizal fungus, Cetraspora helvetica, was found in three Swiss agricultural soils: a no-till crop production system and two temporary grasslands. It forms white spores, 210-270 μm diam, on dark yellow sporogenous cells. The spores have three walls: a triple-layered outer, a bi-layered middle and a triplelayered inner wall. The spore surface is crowded with convex warts, 5-12 μm diam at the base and 1.5-5.0 μm high. The germination shield is hyaline with multiple (6-10) lobes. Glomerospores of two other Gigasporineae spp. have also three walls, multiple-lobed hyaline germination shields, and projections on the outer spore surface: C. spinosissima and C. striata. However, spores of these fungi are substantially pigmented (ochraceous yellow to rust) and crowded with short, thin spines or fingerprint-like processes, respectively. Partial sequences of the 28S ribosomal gene place the new species adjacent to C. spinosissima, C. pellucida, and C. gilmorei. Phylogenetic analyses demonstrate the monophyly of the two genera Racocetra and Cetraspora within the Racocetraceae.

Journal of Applied Polymer Science, 2006

Gutta-percha cone is the most widely used material for root canal filling. The in vivo aging of t... more Gutta-percha cone is the most widely used material for root canal filling. The in vivo aging of this cone focus on the degradation of its main organic component, trans-1,4-polyisoprene, was studied. Aged cones (25 samples) from 2 to 30 years of root canal filling were extracted from different patients in the occasion of retreatment by mechanical way. The information about the aging time was given by the patients. Gel-permeation chromatography (GPC) and infrared spectroscopy (FTIR) were the analytical techniques used. Polyisoprene degrades with time of aging, but in a slow process. Decrease in polymer molar mass from 5.7 × 105 to 1.7 × 105 g/mol was observed in polyisoprene from cone after 30 years of root canal filling and inside a noninfected tooth. In tooth with caries and periodontal infection, the decrease in molar mass is higher (4.6 × 104 g/mol in cone with 10 years of aging). The production of carbonyl and hydroxyl groups in the aged material indicates that the process is oxidative, even in closed teeth. In these cases, the oxygen could be provided from tissue fluid. The degradation mechanism is complex and depends on many factors, besides time of root canal filling. The dental problem caused by the aging could be the production and migration of cytotoxic substances to periodontal ligament and the reduction on the canal sealing property due to the polymer weight loss. Both of them could contribute to the root canal treatment failure. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100:4082–4088, 2006

Critical Care, 2013

Background: We hypothesized that one single episode of acute kidney injury (AKI) reduces long-ter... more Background: We hypothesized that one single episode of acute kidney injury (AKI) reduces long-term survival compared with no acute kidney injury (No AKI) following recovery from critical illness. Materials and methods: A prospective cohort of 2,010 patients admitted to the ICU between 2000 and 2009 at a provincial referral hospital was followed to determine whether AKI influences long-term survival. Results: Of the 1,844 eligible patients, 18.4% had AKI stage 1, 12.1% had stage 2, 26.5% had stage 3, and 43.0% had No AKI, using the KDIGO classification. The mean and median follow-up time was 8.1 and 8.7 years. The 28-day, 1-year, 5-year and 10-year survival rates were 59.6%, 44.9%, 37.4%, and 33.4%, in patients with any AKI (stage 1, stage 2, stage 3), which was significantly worse compared with the critically ill patients with no AKI at any time (P < 0.01). The adjusted 10-year mortality risk associated with AKI was 1.44 (95% CI = 1.2 to 1.7) among 28-day survivors. Patients who had mild AKI (stage 1) had significantly worse survival at 28 days, 1 year, 3 years, 5 years and 10 years compared with No AKI (P < 0.01) (Figure 1A). Patients with sepsis and AKI who survived 28 days had significantly poorer 5-year and 10-year survival compared with nonseptic AKI (P < 0.01) (Figure 1B). Conclusions: Patients with one episode of mild (stage 1) AKI have significantly lower survival rates over 10 years than critically ill patients without AKI. The causes and mechanisms of this association warrant further careful study. Close medical follow-up of these patients may be warranted and mechanistic research required understanding how AKI influences distant events.

Brazilian Dental Journal, 2005

The aim of this study was to investigate in vitro the antimicrobial activity of calcium hydroxide... more The aim of this study was to investigate in vitro the antimicrobial activity of calcium hydroxide [Ca(OH)2] in combination with different vehicles against endodontic pathogens. For such purpose, a broth dilution test was performed. Pastes were prepared with Ca(OH)2 powder and the following vehicles: sterile water, glycerin, camphorated monochlorophenol (CMCP), CMCP + glycerin, polyethyleneglycol and CMCP + polyethyleneglycol. The time required for the pastes to produce negative cultures against the tested microorganisms was recorded and analyzed statistically using the Kruskal Wallis test at 5% significance level. Timing for pastes to eliminate the aerobic and facultative anaerobic microorganisms ranged from 6 to 24 h, while strict anaerobic microorganisms were inhibited within 30 s to 5 min. Microbial susceptibility, ranked from weakest to strongest, can be presented as follows: Enterococcus faecalis (the most resistant microorganism), Candida albicans, Staphylococcus aureus, Porph...

Australian <html_ent glyph="@amp;" ascii="&"/> New Zealand Journal of Statistics, 2002

This paper discusses deviance residual approximations in von Mises regression models. By using a ... more This paper discusses deviance residual approximations in von Mises regression models. By using a relationship between the von Mises and the wrapped normal distributions, the paper shows that the deviance component of the von Mises distribution is approximately a linear function of the standard normal distribution. Two standardized forms are proposed for the deviance residual, and a simulation study is performed to compare the approximation of the proposed residuals to the standard normal distribution. An illustrative example is given.