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Search Results: 1 - 10 of 44986 matches for " Michael Andreoli "
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Simplifica??o da equa??o de viabilidade para predizer a longevidade de sementes de milho e soja
Andreoli, Claudinei;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000900011
Abstract: temperature, moisture and initial quality are important factors in ellis and roberts' equation to predict seed longevity, however it relies on complex experiments of seed aging. the objective of this work was to simplify the equation for predicting changes in seed viability during open warehouse storage. the simplified equation proposed is given by the model vp = vi - (tgb).p, in which vp is seed viability in probit for a period p (days), vi is the initial seed viability in probit and tgb is the seed deterioration rate for each specie at determined storage conditions. seeds of hybrid corn brs201 and brs206 and soybean varieties iac-8 and mg/br 46 (conquista) were packed in multiwall paper bags and stored for 0, 30, 60, 90, 120, 150, 180, 240, 300 and 360 days in open warehouse at two locations, sete lagoas, minas gerais state and brasília, federal district. the data were transformed in probit and the deterioration rate (tgb) between 0 and 30 days was calculated. the coefficient tgb ranged from 1.476x10-3 to 2.687x10-3 for corn and from 2.868x10-3 to 3.617x10-3 for soybean, depending on locations. these data indicate that soybean seed germination declined faster than corn. this model has accurately predicted corn and soybean seed germination after an open storage period.
Surface effects on lyotropic liquid crystals
Oliveira, Elisabeth Andreoli de;
Brazilian Journal of Physics , 1998, DOI: 10.1590/S0103-97331998000400009
Abstract: liquid crystals are very sensitive to surface effects. in fact, these effects are very useful in designing eletro-optical devices. we present a review of the theoretical models that describe the surface interactions in liquid crystals, focusing on lyotropic systems. experimental results will be presented and compared to theoretical predictions.
Representa es de masculinidade na dan a contemporanea
Giuliano Souza Andreoli
Movimento , 2011,
Surface effects on lyotropic liquid crystals
Oliveira Elisabeth Andreoli de
Brazilian Journal of Physics , 1998,
Abstract: Liquid crystals are very sensitive to surface effects. In fact, these effects are very useful in designing eletro-optical devices. We present a review of the theoretical models that describe the surface interactions in liquid crystals, focusing on lyotropic systems. Experimental results will be presented and compared to theoretical predictions.
Undocumented migrants lack access to pregnancy care and prevention
Hans Wolff, Manuella Epiney, Ana P Lourenco, Michael C Costanza, Jacqueline Delieutraz-Marchand, Nicole Andreoli, Jean-Bernard Dubuisson, Jean-Michel Gaspoz, Olivier Irion
BMC Public Health , 2008, DOI: 10.1186/1471-2458-8-93
Abstract: Prospective cohort study including pregnant undocumented migrants presenting to the University hospital from February 2005 to October 2006. The control group consisted of a systematic sample of pregnant women with legal residency permit wishing to deliver at the same public hospital during the same time period.161 undocumented and 233 control women were included in the study. Mean ages were 29.4 y (SD 5.8) and 31.1 y (SD 4.8) (p < 0.02), respectively. 61% of undocumented women (controls 9%) were unaware of emergency contraception (OR 15.7 (8.8;28.2) and 75% of their pregnancies were unintended (controls 21%; OR 8.0 (4.7;13.5)). Undocumented women consulted for an initial pregnancy visit more than 4 weeks later than controls and only 63% had their first visit during the first trimester (controls 96%, p < 0.001); 18% had never or more than 3 years ago a cervical smear test (controls 2%, OR 5.7 (2.0;16.5)). Lifetime exposure to violence was similar in both groups, but undocumented migrants were more exposed during their pregnancy (11% vs 1%, OR 8.6 (2.4;30.6)). Complications during pregnancy, delivery and post-partum were similar in both groups.Compared to women who are legal residents of Geneva, undocumented migrants have more unintended pregnancies and delayed prenatal care, use fewer preventive measures and are exposed to more violence during pregnancy. Not having a legal residency permit therefore suggests a particular vulnerability for pregnant women. This study underscores the need for better access to prenatal care and routine screening for violence exposure during pregnancy for undocumented migrants. Furthermore, health care systems should provide language- and culturally-appropriate education on contraception, family planning and cervical cancer screening.An estimated 8'000 to 12'000 undocumented migrants live and work in the canton of Geneva, representing 1.8 to 2.9% of the 440'982 resident population [1,2]. These so-called undocumented migrants live in Genev
The NEI/NCBI dbGAP database: Genotypes and haplotypes that may specifically predispose to risk of neovascular age-related macular degeneration
Hong Zhang, Margaux A Morrison, Andy DeWan, Scott Adams, Michael Andreoli, Nancy Huynh, Maureen Regan, Alison Brown, Joan W Miller, Ivana K Kim, Josephine Hoh, Margaret M DeAngelis
BMC Medical Genetics , 2008, DOI: 10.1186/1471-2350-9-51
Abstract: Before release of individual data, p-value information was obtained directly from the AREDS dbGAP website. Of the 35 variants with P < 10-6 examined, 23 significantly modified risk of neovascular AMD. Many variants located in tandem on 1q32-q22 including those in CFH, CFHR4, CFHR2, CFHR5, F13B, ASPM and ZBTB were significantly associated with AMD risk. Of these variants, single SNP analysis revealed that CFH rs572515 was the most significantly associated with AMD risk (P < 10-6). Haplotype analysis supported our findings of single SNP association, demonstrating that the most significant haplotype, GATAGTTCTC, spanning CFH, CFHR4, and CFHR2 was associated with the greatest risk of developing neovascular AMD (P < 10-6). Other than variants on 1q32-q22, only two SNPs, rs9288410 (MAP2) on 2q34-q35 and rs2014307 (PLEKHA1/HTRA1) on 10q26 were significantly associated with AMD status (P = .03 and P < 10-6 respectively). After controlling for smoking history, gender and age, the most significant gene-gene interaction appears to be between rs10801575 (CFH) and rs2014307 (PLEKHA1/HTRA1) (P < 10-11). The best genotypic fit for rs10801575 and rs2014307 was an additive model based on LRT. After applying a Bonferonni correction, no other significant interactions were identified between any other SNPs.This is the first replication study on the NEI dbGAP SNPs, demonstrating that alleles on 1q, 2q and 10q may predispose an individual to AMD.Advanced age-related macular degeneration (AMD) is the most common cause of legal blindness in developed countries. Clinically two forms of advanced AMD are recognized: geographic atrophy and neovascular. Geographic atrophy is characterized by a slow progressive degeneration of the retinal pigment epithelium (RPE), resulting in the gradual loss of the photoreceptors. The neovascular form is characterized by the growth of new abnormal blood vessels from beneath the retina that can cause severe and rapid vision loss due to hemorrhage and exudation.
Structural Validity of the Tonic Immobility Scale in a Population Exposed to Trauma: Evidence from Two Large Brazilian Samples
Michael Reichenheim, Wanderson Souza, Evandro Silva Freire Coutinho, Ivan Figueira, Maria Inês Quintana, Marcelo Feijó de Mello, Rodrigo Affonseca Bressan, Jair de Jesus Mari, Sergio Baxter Andreoli
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0094367
Abstract: Background Tonic Immobility is a temporary state of motor inhibition in situations involving extreme fear. The first scale developed for its assessment was the 10-item Tonic Immobility Scale (TIS). However, there are still few studies on its structural (dimensional) validity. The objective of this study was to reassess the factor structure of the TIS applied to representative samples exposed to general trauma of two Brazilian mega-cities. Methods The sample comprised 3,223 participants reporting at least one traumatic experience. In S?o Paulo (n = 2,148), a Confirmatory Factor Analysis (CFA) first tested the originally proposed two-dimensional structure. This was followed by sequential Exploratory Structural Equation Models to identify the best fitting model, and subsequently tested in Rio de Janeiro (n = 1,075) via CFA. Alternative reduced versions were further explored using the aggregate sample. Model-based Item Response Theory (IRT) location parameters were also investigated. Results An absence of factor-based convergent and discriminant validity rejected the original proposition. However, the one-dimensional structure still held several residual correlations. Further exploration indicated the sustainability of reduced versions with seven (alternative A) and six (alternative B) items. Both presented excellent fit and no relevant residual item correlation. According to the IRT location parameters, items in alternative B covered a wider range of the latent trait. The Loevinger's H scalability coefficients underscored this pattern. Conclusions The original model did not hold. A one-factor solution was the most tenable in both large samples, but with significant item residual correlations, indicating that content redundancies persisted. Further reduced and simplified versions of the TIS proved promising. Although studies are yet to be carried out in other settings, it is the authors' impression that the restricted versions of the TIS are already apt for use in epidemiologic studies since the pros tend to outweigh the cons (as outlined in the Discussion section).
Large Wood Volume and Longitudinal Distribution in Channel Segments Draining Catchments with Different Land Use, Chile  [PDF]
A. Iroumé, L. Mao, H. Ulloa, C. Ruz, A. Andreoli
Open Journal of Modern Hydrology (OJMH) , 2014, DOI: 10.4236/ojmh.2014.42005
The storage, longitudinal distribution and recruitment processes of in-stream large wood (LW) were studied comparing channel segments draining four Chilean mountain catchments with different land use. The segments were divided into relatively uniform reaches of different lengths and surveyed for LW (piece dimensions, position in the channel, orientation to flow and aggregation) and stream morphology (slope and bank full channel width and depth) characterizations. LW volume stored in the Pichun, El Toro and Vuelta de Zorra study channels are within the range informed in international researches from streams draining catchments with similar forest covers. However, the 1057 m3/ha of LW stored in Tres Arroyos is extremely high and in the same order of magnitude than the reports from old-growth forests in the Pacific Northwest of USA. The size of the area that can potentially provide wood to streams depends on the wood supply mechanisms within any catchment, and the LW stored in the study segments increases as the size of this area increases. This study aims to contribute to the knowledge on the effects of LW in mountain channels, gathering new information and expanding investigations developed in Chile since 2008. This research was carried out within the framework of Project FONDECYT 11106209.
Matriconditioning integrated with gibberellic acid to hasten seed germination and improve stand establishment of pepper and tomato
Andreoli, Claudinei;Khan, Anwar A;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999001000023
Abstract: emergence and stand establishment of tomato (lycopersicon lycopersicum (l.) (karsten ex farw) and pepper (capsicum annus l.) seeds are often slow and erratic, particularly under stress conditions. field emergence trials sometimes have not responded to priming in pepper. this study examined the combined effects of matriconditioning and gibberellin application on the germination and stand establishment of pepper and tomato seeds. pepper and tomato seeds were conditioned with a solid carrier, micro cel e, in the presence of gibberellic acid (ga) for 1, 2 , 3 and 4 days at 15 and 25oc. the results showed that, in all cases, even under stress conditions, the combination of matriconditioning with ga was effective in improving germination and emergence of pepper and tomato. the germination time was, in average, reduced by 2 to 3 days by primed seeds. thus, matriconditioning, during which germination is suspended, provides an unique means to rapidly and efficiently digest the endosperm by ga-induced enzymes and reduce the mechanical restraints of endosperm thus providing energy to start and sustain embryo growth.
Linguajares urbanos
Giovani Souza Andreoli,Cleci Maraschin
Revista Mal-estar e Subjetividade , 2005,
Abstract: The principal aim that orientates this study is to produce a reading of street graphism understood as a modality of languaging. We begin using concepts from the Biology of Cognition which permits to sustain that street graphism can be read as a network of conversations, since they′re produced by co-ordinations of recurrent co-ordinations of actions, configuring collectivized processes of meaning, empowering the exercise of authorship. Navigating in this network of conversations, photography was used as a means of registering the images. The co-ordinations between images were attained from the theoretical references applied. The results show clearly the conversational character of street graphism evidencing the exercise of authorship, the processes of constituting interlocutors and the tensing produced in that languaging.
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