Methods of adaptability and stability analysis in irrigated rice genotypes in Minas Gerais, Brazil

The objective of this study was to compare different estimation methods of adaptability and stability in ninegenotypes of irrigated rice. The experiment was conducted at three sites in the state of Minas Gerais in the growing seasonsfrom 2000/2001 to 2005/2006, totaling 11 environments. The adaptability and stability were analyzed by the methods proposedby Eberhart and Russel (1966), Cruz et al. (1989), Carneiro (1998) and Annicchiarico (1992). The methods proposed byCarneiro (1998) and by Annicchiarico (1992) were more satisfactory due to the measure of behavioral adaptability andstability, which combined adaptation, adaptability and stability concepts in just one parameter. General adaptability wasobserved in the lines CNAi 8872 and CNAi 8874 and specific adaptability to favorable conditions in cultivar Rio Grande

BRSMG Caçula: very early upland rice cultivar for Minas Gerais

The basic objective of the upland rice breeding program developed in the state of Minas Gerais is to make new commercialcultivars available. A new cultivar named BRSMG Caçula is being released, with the main traits: earliness, lodging tolerance, grainquality, disease tolerance, and high grain yield

Predição do potencial genético de populações segregantes de arroz de terras altas

This work aimed to evaluate the Jinks & Pooni's method to predict genetic potential of the segregating upland rice population and to study the effect of the segregating population x environment interaction in the selection of those populations. In this work 23 segregating populations of upland rice with two checks were used. They were evaluated in a 5x5 lattice, with three replicates, in the agricultural year of 1996/97. The populations were conducted in two sites in Minas Gerais State, Brazil, Lavras and Patos de Minas, at three distinct sowing times. The results found in relation to the probability of extracting superior lines from a certain population indicated as the most promising the populations CNAx 5496 and CNAx 6001 and as the least promising CNAx 6063 and CNAx 6102. The Jinks & Pooni's method was a feasible alternative in the choice of populations most promising permitting the breeder to concentrate his effort in the evaluation of a higher family. The occurrence of the segregating population x sowing time and site x sowing time interactions showed the importance of evaluating the populations in more than one environment. The choice of the populations which presented a steady behavior against the environmental drifts is an important step within an improvement program and the chance to obtain success in this phase rises.O objetivo deste trabalho foi avaliar o método de Jinks & Pooni na predição do potencial genético de populações segregantes de arroz e estudar o efeito da interação populações segregantes x ambiente na seleção destas populações. Utilizaram-se 23 populações segregantes de arroz de terras altas e duas testemunhas, avaliadas em um látice 5x5, com três repetições, no ano agrícola de 1996/97. O estudo foi conduzido em dois locais em Minas Gerais, Lavras e Patos de Minas, em três épocas distintas de semeadura. Os resultados encontrados em relação à probabilidade de extrair linhagens superiores a um determinado padrão indicaram como mais promissoras as populações CNAx 5496 e CNAx 6001, e menos promissoras, CNAx 6063 e CNAx 6102. A previsão do potencial genético das populações segregantes a partir do método de Jinks & Pooni mostrou-se uma alternativa viável na escolha das populações mais promissoras, permitindo ao melhorista concentrar maiores esforços na avaliação das famílias superiores. A ocorrência das interações populações segregantes x épocas e locais x épocas mostraram a importância de se avaliar as populações em mais de um ambiente. A escolha das populações que apresentam um comportamento estável frente às oscilações ambientais é importante dentro de um programa de melhoramento

Simulação de estudo hidrogeológico associado à deposição de rejeitos radioativos de baixo e médio nível de atividade

Em 2006, o Programa Nuclear Brasileiro previu a construção de pelo menos cincousinas nucleares até 2030. Como em outras atividades humanas, o uso da energianuclear gera rejeitos que podem ter impacto potencial negativo na saúde humana eno ambiente. Estes rejeitos devem ser bem gerenciados, não podendo ser liberadossem tratamento prévio. Neste trabalho, relata-se um estudo visando avaliar aimplantação de um repositório de rejeitos radioativos de baixo e médio nível deatividade, no Estado da Bahia, com o auxílio do software FRACTRAN. Os resultadosdemonstram que a vulnerabilidade hidrogeológica local é pequena, o que encoraja odesenvolvimento de estudos complementares

Superovulação em caprinos da raça Moxotó com FSH-p

The aim of the work was to evaluate the rates of estrous, superovulatory response and embryos recovery in Moxotó goats after three treatments with porcine FSH. Twenty goats were synchronised with medroxyprogesterone acetate sponges (60 mg for 11days) and cloprostenol (l00 mug on ninth day). The animals were superovulated with 250 IU of FSH-p in 8 decreasing doses at intervals of 12 hours. The repetition of superovulatory treatment decreased estrous symptoms, but didnt affect the ovulation rate and decreased the regressed corpus luteum rate. The embryos recovery was affected by regressed corpus luteum and embryo collection technique.O objetivo deste trabalho foi avaliar as taxas de manifestação de sintomas de estro, de resposta superovulatória e de recuperação de embriões em 20 cabras da raça Moxotó em três tratamentos consecutivos, em intervalos de 56 dias. O ciclo estral das fêmeas foi sincronizado com esponjas vaginais contendo 60 mg de acetato de medroxiprogesterona (MGA) durante 11 dias e com 100 mig de cloprostenol (PGF2alfa ) administrado no nono dia. Neste dia, iniciou-se o tratamento superovulatório com 250 UI de FSH-p por cabra, fracionadas em oito doses decrescentes, com intervalo de 12 horas. A repetição do tratamento superovulatório com FSH-p diminuiu a taxa de manifestação de sintomas de estro, porém não afetou a taxa de ovulação e reduziu a taxa de regressão prematura de corpos lúteos. A taxa de recuperação de embriões foi influenciada pela ocorrência de regressão prematura de corpos lúteos e pela ação das repetidas colheitas de embriões sobre o genital. Não foi possível avaliar o efeito das repetidas superovulações sobre a taxa de recuperação de embriões

Immunohistochemical staining of Langerhans cells in HPV-positive and HPV-negative cases of oral squamous cells carcinoma

The Human Papillomavirus (HPV) has been strongly implicated in development of some cases of oral squamous cell carcinoma (OSCC). However, the immunological system somehow reacts against the presence of this virus. Among the cells involved in such mechanism of defense Langerhans cells (LC) stand out, which are responsible for processing and presenting antigens. OBJECTIVES: The purposes of this study were to investigate the presence of HPV DNA and to evaluate the immunohistochemical reactivity for Langerhans cells between HPV-positive and HPV-negative OSCC. Twenty-seven cases of OSSC were evaluated. MATERIAL AND METHODS: DNA was extracted from paraffin-embedded tissue samples and amplified by Polymerase Chain Reaction (PCR) for the detection of HPV DNA. Viral typing was performed by dot blot hybridization. Immunohistochemistry was performed by the Streptavidin-biotin technique. RESULTS: From the 27 cases, 9 (33.3%) were HPV-positive and 18 (66.0%) HPV-negative. HPV 18 was the most prevalent viral type (100% cases) and infection with HPV-16 (co-infection) was detected in only 1 case. In the OSCC specimens examined, immunoreactivity to S-100 antibody was detected in all cases, with a mean number of 49.48±30.89 Langerhans cells positive for immunostaining. The mean number of immunostained Langerhans cells was smaller in the HPV-positive cases (38 cells/case) than in the HPV-negative cases (42.5 cells/case), but this difference was not significant (p=0.38). CONCLUSIONS: The low frequency of detection of HPV DNA in OSCC indicates a possible participation of the virus in the development and progression of only a subgroup of these tumors. There was no association between the immunohistochemical labeling for Langerhans cells (S-100+) and HPV infection of in OSSC. These findings suggest that the presence of HPV in such OSCC cases could not alter the immunological system, particularly the Langerhans cells

Clinical, Radiographic And Hematological Characteristics Of Mycoplasma Pneumoniae Pneumonia.

To describe the clinical, hematological and radiographic characteristics of children hospitalized for Mycoplasma pneumoniae pneumonia. The study population consisted of 190 children between 3 months and 16 years old, hospitalized for radiographically confirmed pneumonia. Patients were divided into two groups, to wit: 95 children with Mycoplasma pneumoniae pneumonia, as diagnosed using the enzyme-linked immunosorbent assay (ELISA) method; and 95 children with pneumonia caused by other etiologic agents. Using a validated scoring system, the clinical, hematological and radiographic findings of both groups were compared to differentiate Mycoplasma pneumoniae pneumonia (group 1) from pneumonia caused by other etiologic agents (group 2), itself divided into two groups, bacterial (n = 75) and viral (n = 20). Mycoplasma pneumoniae pneumonia was found most often in girls (p < 0.01), older children (p < 0.01), and patients with dry cough (p < 0.01) and extrapulmonary manifestations (p < 0.01). The clinical, hematological and radiographic variables of Mycoplasma pneumoniae pneumonia (mean score = 6.95) scored between those found in bacterial (mean score = 8.27) and viral pneumonia (mean score = 0.90). Results suggest that the scoring system can contribute to the presumptive diagnosis of Mycoplasma pneumoniae pneumonia and help differentiate pneumonic status caused by other etiologic agents.86480-

Genetic progress obtained by upland rice breeding in twenty one years of research in the State of Minas Gerais, Brazil

Este trabalho objetivou estimar o ganho genético obtido pelo programa de melhoramento de arroz de sequeiro (Oryza sativa L.) desenvolvido em Minas Gerais cooperativamente pela Epamig/Embrapa-Centro Nacional de Pesquisa de Arroz e Feijão (CNPAF)/UFLA/UFV, no período de 1974/75 a 1994/95. Para tanto, utilizaram-se os dados dos ensaios comparativos avançados de cultivares e linhagens de arroz de sequeiro conduzidos no referido período. Em virtude da distribuição irregular de chuvas e da resposta diferenciada dos materiais de ciclos diferentes às condições climáticas, optou-se por dividi-los em dois grupos; um contendo os genótipos precoces e o outro os de ciclo médio. Os resultados alcançados mostraram que ocorreu um ganho genético médio anual de 1,26% e de 3,37% em relação ao grupo precoce e ao de ciclo médio, respectivamente. O grupo precoce superou estatisticamente (P£0,01) em produtividade de grãos o grupo de ciclo médio, indicando que em Minas Gerais deve-se dar preferência ao plantio de cultivares de ciclo curto.This work aimed to estimate the genetic gain obtained by the upland rice (Oryza sativa L.) breeding program developed in Minas Gerais State, Brazil, in cooperation with Empresa de Pesquisa Agropecuária de Minas Gerais (Epamig), Embrapa-Centro Nacional de Pesquisa de Arroz e Feijão (CNPAF), Universidade Federal de Lavras (UFLA) and Universidade Federal de Viçosa (UFV), from 1974/75 to 1994/95. Results of the comparative trials of upland rice cultivars and lines conducted over the above quoted period were utilized. Because of irregular rainfall distribuition and the distinctive response of different cycles to climatic conditions, the option was to divide them into two groups, one encompassing the early genotypes and the other those of medium cycle. The achieved result showed that an average genetic gain of 1.26% and 3.37% for the early group and medium cycle, respectively, occurred. In addition, it was found that the early group statistically outyielded (P £ 0.01) as to grains the medium cycle group, denoting that in Minas Gerais the short cycle cultivars should be preferred

Um Aplicativo Android como Recurso Didático para Ensino e Aprendizagem de Ondas Eletromagnéticas

This work has as objective to develop an application for mobile devices with the Android operating system. This research came from the following question: what are the contributions of the use of the Android application for improving the teaching and learning of content related to electromagnetism? The research was based on the theory of Lev Vygotsky, in particular mediation. For the development of the application, it was used the Android Studio program, which is currently the official platform of Google for this purpose. The target audience of the research were students of the third series of regular middle school, in the year 2018. As a result, we obtained an evolution of the initial state of the students to the state after students learn about the application, being that the first class where the research was conducted, the average number of groups who responded to the lists of exercises increased from 7.33 to 9.56, already the second class, the average number of correct answers went from 5.56 to 7.11 and the third class, the average number of correct answers went from 5.25 to 8.75, showing that in all classes there was an improement in the understanding of the concepts presented in the educational product.Esse trabalho tem como objetivo desenvolver um aplicativo para dispositivos móveis com o sistema operacional Android. Essa pesquisa partiu da seguinte questão: quais as contribuições do uso do aplicativo Android para a melhoria do ensino e do aprendizado dos conteúdos relacionados ao eletromagnetismo? A pesquisa foi fundamentada na teoria de Lev Vygotsky, em especial a mediação. Para o desenvolvimento do aplicativo, foi utilizado o programa Android Studio, que atualmente é a plataforma oficial do Google para esse fim. O publico alvo da pesquisa foram alunos da terceira série do ensino médio regular, no ano de 2018. Como resultados, obteve-se uma evolução do estado inicial dos alunos para o estado após os alunos conhecerem o aplicativo, sendo que na primeira turma onde a pesquisa foi realizada, a média dos grupos que responderam às listas de exercícios passou de 7,33 para 9,56, já a segunda turma, a média de acertos passou de 5,56 para 7,11 e na terceira turma, a média de acertos passou de 5,25 para 8,75, mostrando que em todas as turmas houve uma melhoria no entendimento dos conceitos apresentados no produto educacional