Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 5 )

2018 ( 10 )

2017 ( 13 )

2016 ( 9 )

Custom range...

Search Results: 1 - 10 of 5611 matches for " Renato Beozzo;Czermainski "
All listed articles are free for downloading (OA Articles)
Page 1 /5611
Display every page Item
Modelo autologístico espa?o-temporal com aplica??o à análise de padr?es espaciais da leprose-dos-citros
Franciscon, Luziane;Ribeiro Junior, Paulo Justiniano;Krainski, Elias Teixeira;Bassanezi, Renato Beozzo;Czermainski, Ana Beatriz Costa;
Pesquisa Agropecuária Brasileira , 2008, DOI: 10.1590/S0100-204X2008001200006
Abstract: the goal of this study was to propose modeling strategies applied to the analysis of citrus leprosis incidence, through the use of a spatial temporal autologistic model. we evaluated the adequacy of autologistic model to consider data collected at different times; to detect spatial-temporal patterns through different neighboring structures; to consider the effect of covariates from previous times; and assessing the effect of the presence of the disease vector in the probability of new infections occurrence. the spatial temporal autologistic model adopted has extended the usual logistic model, in which the neighboring structures is described by means of covariates built from the status of plants nearby, at the same or at previous times. data regarding the presence of the leprosis on plants were collected at field points referenced in space, over a period of approximately two years. models detect the presence of spatial patterns on new infections for the studied neighboring structures, at the same or previous time. additionally, probability estimates of a plant become infected can be obtained from the fitted models, given the occurrence of the disease and vector.
Autologistic model with an application to the citrus "sudden death" disease
Krainski, Elias Teixeira;Ribeiro Junior, Paulo Justiniano;Bassanezi, Renato Beozzo;Franciscon, Luziane;
Scientia Agricola , 2008, DOI: 10.1590/S0103-90162008000500014
Abstract: the citrus sudden death (csd) disease affects dramatically citrus trees causing a progressive plant decline and death. the disease has been identified in the late 90's in the main citrus production area of brazil and since then there are efforts to understand the etiology as well as the mechanisms its spreading. one relevant aspect of such studies is to investigate spatial patterns of the occurrence within a field. methods for determining whether the spatial pattern is aggregated or not has been frequently used. however it is possible to further explore and describe the data by means of adopting an explicit model to discriminate and quantify effects by attaching parameters to covariates which represent aspects of interest to be investigated. one alternative involves autologistic models, which extend a usual logistic model in order to accommodate spatial effects. in order to implement such model it is necessary to take into account the reuse of data to built spatial covariates, which requires extensions in methodology and algorithms to assess the variance of the estimates. this work presents an application of the autologistic model to data collected at 11 time points from citrus fields affected by csd. it is shown how the autologistic model is suitable to investigate diseases of this type, as well as a description of the model and the computational aspects necessary for model fitting.
Base científica para a erradica o de plantas sintomáticas e assintomáticas de Huanglongbing (HLB, Greening) visando o controle efetivo da doen a
José Belasque Junior,Armando Bergamin Filho,Renato Beozzo Bassanezi,José Carlos Barbosa
Tropical Plant Pathology , 2009, DOI: 10.1590/s1982-56762009000300001
Dinamica temporal da popula??o do ácaro Brevipalpus phoenicis e da leprose dos citros sob condi??es naturais de epidemia
Czermainski, Ana B.C.;Bassanezi, Renato B.;Laranjeira, Francisco F.;Amorim, Lilian;
Fitopatologia Brasileira , 2007, DOI: 10.1590/S0100-41582007000400003
Abstract: the density of mite brevipalpus phoenicis, vector of citrus leprosis virus (cilv), is determinant for decisions on control measures for citrus leprosis. little information on the progress of incidence of trees with citrus leprosis has been compiled, either separately or together with the mite population. this study aimed to characterize the temporal growth of b. phoenicis populations and leprosis incidence on citrus trees and the relationship with these populations, under natural conditions. two sweet orange groves, one with 'valencia' and the other with 'natal', were monitored from 2002 to 2004, every 22 days. the increase in disease incidence was slow and estimates of disease growth rate were quite low, varying from 0.0126 to 0.0448 for 'valencia' and from 0.0044 to 0.0525 for 'natal'. the initial inoculum quantity on the branches increased significantly from one cycle to the next. after the three years of observation, the incidence reached 32% in valencia and 6.8% in natal trees. although not systemic, citrus leprosis has a polyetic performance, building up inoculum year after year, especially on the branches. the incidence was not correlated with the mite density on the trees in previous data collections, but presented a significant positive correlation (p<0.001) with the disease incidence reported earlier. this indicates that the presence of symptoms, rather than only the mites, must be taken into consideration in sampling aiming at disease control.
Generaliza??o de um índice de intensidade de infec??o em experimentos de avalia??o de doen?as em plantas
Czermainski, Ana Beatriz Costa;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999000900004
Abstract: in plant disease experiments, individuals of each experimental unit are commonly classified according to categories of a discrete quantitative scale through visual assessment of disease severity. this paper shows the generalization of a measure that associates a quantitative response called infection intensity index, expressed as i=sen2w, to each distribution of frequencies obtained in the units. its angular transformation w=arcsen i0,5 allows the application of the analysis of variance. since the calculation of w does not involve the values or notes of the scale it can also be used with a qualitative ordinal scale.
Desenvolvimento de um sistema de apoio à decis?o para a diagnose de doen?as, pragas e distúrbios abióticos dos citros
Uch?a, Cleilson do Nascimento;Pozza, Edson Ampélio;Bassanezi, Renato Beozzo;Spósito, Marcel Bellato;Yamamoto, Pedro Takao;Barbosa, Jorge Chaves;Oliveira, Alexandre Arduini da Silva e;
Summa Phytopathologica , 2010, DOI: 10.1590/S0100-54052010000200008
Abstract: the concern about the diagnosis of problems affecting citrus led to an accumulation of knowledge over the years. however, such accumulated knowledge needed to be organized and efficiently disseminated. thus, the aims of this work were to build a knowledge basis for the diagnosis of abiotic and biotic citrus diseases to develop and implement a decision support system (dss) and to test and evaluate this system. dss was built by using the tool 'borland delphi' version 5. a total of 562 questions were formulated, including 322 rules, besides photographs to help in the diagnosis of 34 diseases, 40 pests and 34 abiotics disturbances in citrus. dss evolution was divided into verification and validation. in the verification phase, dss was analyzed by means of a questionnaire applied to citrus specialists. the program validation phase inclued four groups of people, with different knowledge levels (10 people/group), trying to provide the correct diagnosis. results indicated correct diagnosis by 45.6% of correctness of the interviewed people and a 93.6% when using the dss was used. the system was nomed dr. citrus (prototype registered at inpi # 014070009188).
A Igreja do Brasil na prepara o do Vaticano II (The participation of the Church from Brazil in the preparation of Vatican II) - DOI: 10.5752/P.2175-5841.2011v9n24p986
Luiz Carlos Luz Marques,José Oscar Beozzo
Horizonte : Revista de Estudos de Teologia e Ciências da Religi?o , 2011, DOI: 10.5752/p.2175-5841.2011v9n24p986
Abstract: Levando–se em conta os leitores do século XXI, ao debru ar-se sobre a participa o da Igreja católica brasileira na prepara o do Concílio Vaticano II, o presente estudo parte de três perguntas: a) o quê interessa saber sobre a participa o brasileira? b) é este um tema relevante? c) Alguns brasileiros participa o significativamente na fase preparatória? Para responder apropriadamente a essas quest es os autores prop em um conceito diferente de “participa o” na prepara o do Vaticano II por parte do episcopado brasileiro. O artigo n o foca apenas a presen a deste ou daquele bispo ou perito nas comiss es do Concílio, mas prop e a idéia de que o mais importante foi a auto-prepara o, que durante certo tempo permaneceu “latente” e posteriormente se organizou através de um Concílio com um episcopado jovem, com uma média de idade em torno de 54 anos e 11 de experiência como bispo. Por isso, conscientes dos problemas pastorais que a realidade do subdesenvolvimento punha à Igreja, e com uma incipiente experiência de participa o colegial, desenvolvida na constru o do Plano de Emergência, este episcopado n o só vivenciou em profundidade o “evento” conciliar, como foi o primeiro a sair dele organizado para colocá-lo em prática. Daqui a relevancia desta reconstru o. Palavras-chave: Helder Camara. Plano de Emergência. Colegialidade. Vaticano II. Igreja Católica no Brasil Abstract This article aims to show the contribution of the Brazilian Catholic Church in the preparation of the Second Vatican Council. To fulfill such purpose the present study focus its research in three basic questions: a) what is important to know about the Brazilian participation? b) Is this a relevant topic? C) Some Brazilians participate significantly in the preparatory phase? To respond appropriately to these issues the authors propose a different concept of "participation" in the preparation of Vatican II by the Brazilian episcopate. The article focuses not only the presence of this or that bishop or the expert commissions of the Council, but proposes the idea that the most important was the self-preparation, which for a time remained "latent" and later was organized by a council with a young bishop, with an average age around 11 and 54 years of experience as a bishop. Therefore, aware of the problems that the pastoral reality of underdevelopment put the Church, and with an incipient experience of participating high school, developed in the construction of the Emergency Plan, the bishops not only experienced in depth the "event" to reconcile, as was the first it held out to put it into
Strategy for a Fast and Simple Method for Trace Determination of Senecionine and Senecionine N-Oxide in Honey Using LVI in HPLC-MS/MS  [PDF]
Lizandra Czermainski Bretanha, Marcel Piovezan, Alysson Fernandez Vasques Sako, Moacir Geraldo Pizzolatti, Gustavo Amadeu Micke
American Journal of Analytical Chemistry (AJAC) , 2014, DOI: 10.4236/ajac.2014.510076
Abstract: The aims of this study were to develop an HPLC-MS/MS method for the trace determination of senecionine (SEN) and senecionine N-oxide (SENNOX) in honey samples with simple dilution and to optimize the strategy for large volume injection (LVI). In the method development, the quantity of sugar, injection volume and sample pH were optimized to increase the efficiency and the retention factor of the analytes. Figures of merit of the proposed method include: good linearity (R2 > 0.99), limits of detection of 57 and 59 ng·kg﹣1 for SEN and SENNOX, respectively, and recovery in the range of 83.4% - 123%. The values for the instrumental precision in relation to the retention time and peak area were 0.65% and 7.1%, respectively, and for the intra-day precision they were greater than 0.95% and 9.7% for SEN and SENNOX, respectively. The LVI-HPLC-MS/MS procedure developed was applied to honey samples prepared by simple dilution with deionized water (1:8 w/w) and the pH was adjusted to 9.5 with NH4OH. The sample volume injected was 100 μL; concentrations in natural and industrialized honey were ﹤LOQ - 1071.3 μg·kg﹣1 for SEN and ﹤LOD - 16.9 μg·kg﹣1 for SENNOX.
Popula??o, grupos étnico-raciais e economia cafeeira: S?o Carlos, 1907
Truzzi, Oswaldo Mário Serra;Bassanezi, Maria Silvia Beozzo;
Revista Brasileira de Estudos de Popula??o , 2009, DOI: 10.1590/S0102-30982009000200004
Abstract: the formation of the population of the city of s?o carlos, in the south-central region of the brazilian state of s?o paulo, began in the first half of the 19th century with the first plantations operated by slave labor. in 1884, with the arrival of the railroad, the municipality became solidly and permanently integrated into the overall economy of the state. s?o carlos thus kept up with the state's transition from an economy based on slave labor to one where free immigrant settlers of european origin, especially italian, became the rule. less than two decades after the abolition of slavery in brazil, the racial composition of the population had changed significantly due to the great influx of immigrants and, probably, in addition, to the departure from the municipality of many former black slaves. this rapid change can be seen in the data from the federal census carried out in 1907, which compiled the diversified information referring to 38,642 individuals who then inhabited s?o carlos. this present analysis discusses the demographic characteristics and social inclusion of different ethnic groups in the city's population during that period. its importance also results from the absence of demographic data from the period in question, related to the recognized shortcomings of the censuses of 1890 and 1900 and the long period of 34 years between the demographic measurement in what was then the province of s?o paulo, in 1886, and the national census of 1920. the 1920 census is much more reliable, but nevertheless negligent in terms of the color of individuals.
Influência das condi??es climáticas sobre a eficácia de fungicidas empregados para o controle do míldio em Vitis vinifera
Czermainski, Ana Beatriz Costa;S?nego, Olavo Roberto;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000100002
Abstract: one of the factors to be managed for maximum vineyard productivity is the downy mildew, disease caused by plasmopara viticola that affects grape production in many parts of the world. in brazil, several fungicide applications for its control are necessary. different active ingredients are available on the market. the influence of climatic factors (air temperature, rainfall and relative humidity) on fungicide efficacy in vitis vinifera was analyzed using results of fungicide trials for downy mildew control as a base. the experiments were carried out at embrapa uva e vinho with the cv. tannat conducted on vertical trellis system during 1995 and 1996. the assessment of the environmental factors pointed out primary and secondary infection periods, being the rainfall and high relative humidity responsible for the high severity in the year 1996. the analysis of the incidence and of the disease rate on leaves and bunches, indicated that the most efficient treatments were cymoxanyl + mancozeb, metalaxyl + mancozeb and dithianon, in the two years. the active ingredients copper oxychloride, alone or combined with mancozeb, and copper sulphate were not efficient for downy mildew control on bunches under favorable environmental conditions to this disease.
Page 1 /5611
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.