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Search Results: 1 - 10 of 230 matches for " Regiane Abjaud Estopa "
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PERFORMANCE OF INBRED AND OUTBRED Eucalyptus spp.
Regiane Abjaud Estopa,Magno Antonio Patto Ramalho,Gabriel Dehon Sampaio Pe?anha Rezende,Jupiter Israel Muro Abad
CERNE , 2007,
Abstract: Inbred and outbred Eucalyptus clone were assessed aiming to check the possible loss of vigor in the initial germinationphases and growing in nursery and in t field conditions. Offsprings from two commercial clones were assessed as inbreds (C01 andC02) and as hybrids (C01 x C03 and C02 x C03). The work consisted of two phases. The first one was in the nursery, in a completelyrandom design, with 4 treatments and 6 reps, in plots with 30 tubes with only one seed. The second one, in the field, used a randomizedcomplete block design, with 4 treatments and 6 reps, with 18 plants per plots. The percentage of germination, germination speed index,survival and plant height were assessed at 35, 50, 65 and 80 days in the nursery and, in the field, the percentage of survival with 6months and plant height with 2, 4 and 6 months. It was concluded that the germination, survival and the growing of plants resultedfrom inbred were similar to the hybrid, showing that the loss of vigor is not expressive for those characters in initial developmentalphases of Eucalyptus spp.
Caracteriza??o genética de Calophyllum brasiliense Camb. em duas popula??es de mata ciliar
Botrel, Maria Carolina Gaspar;Souza, Anderson Marcos de;Carvalho, Dulcinéia de;Pinto, Sheila Isabel do Carmo;Moura, Márcia Cristina de Oliveira;Estopa, Regiane Abjaud;
Revista árvore , 2006, DOI: 10.1590/S0100-67622006000500016
Abstract: calophyllum brasiliense camb. is a predominant species in areas with high water saturation such as the riparian forests in southern minas gerais state. the objective of this research was to study the genetic variability of c. brasiliense populations. twenty individuals were sampled from two populations located in funil dam in lavras-mg. isozyme eletrophoresis analysis provided evidence of 17 alleles distributed in 8 loci, which were represented in five enzymatic systems: a-esterase, b esterase, acid phosphatase, malate dehydrogenase and transaminase oxalacetatum glutamate. the diversity indexes showed a low number of alleles per loci in both populations, pop i (1.75) and pop ii (1.50). the polymorphic loci percentage (p) were 37.5% and 50% in populations i and ii respectively. the mean heterozygosities were 0.119 and 0.111, while the expected was 0.131 and 0.112. the number of migrants (nm) between populations was 2.70. the estimated effective size was 18 individuals for population i, and 19 for population ii.
Using Random Amplified Polymorphic DNA to Assess Genetic Diversity and Structure of Natural Calophyllum brasiliense (Clusiaceae) Populations in Riparian Forests
Evania Galv?o Mendon?a,Anderson Marcos de Souza,Fábio de Almeida Vieira,Regiane Abjaud Estopa,Cristiane Aparecida Fioravante Reis,Dulcinéia de Carvalho
International Journal of Forestry Research , 2014, DOI: 10.1155/2014/305286
Abstract: The objective of this study was to assess the genetic variability in two natural populations of Calophyllum brasiliense located along two different rivers in the state of Minas Gerais, Brazil, using RAPD molecular markers. Eighty-two polymorphic fragments were amplified using 27 primers. The values obtained for Shannon index ( ) were 0.513 and 0.530 for the populations located on the margins of the Rio Grande and Rio das Mortes, respectively, demonstrating the high genetic diversity in the studied populations. Nei’s genetic diversity ( ) was 0.341 for the Rio Grande population and 0.357 for the Rio das Mortes population. These results were not significantly different between populations and suggest a large proportion of heterozygote individuals within both populations. AMOVA showed that 70.42% of the genetic variability is found within populations and 29.58% is found among populations ( ). The analysis of kinship coefficients detected the existence of family structures in both populations. Average kinship coefficients between neighboring individuals were 0.053 ( ) in Rio das Mortes and 0.040 ( ) in Rio Grande. This could be due to restricted pollen and seed dispersal and the history of anthropogenic disturbance in the area. These factors are likely to contribute to the relatedness observed among these genotypes. 1. Introduction Of all the ecosystems that constitute the Brazilian Semideciduous Forests, riparian forests contribute significantly to the conservation of biodiversity, mainly due to the relationship between ecological corridors and ecosystem functioning [1]. Because of their interconnectedness, riparian forests play a central role in biogeographical and evolutionary shifts as they facilitate seed dispersal [2]. In Brazil, even though riparian forests are protected by law in the Forest Code (Law 4.771 of 1965), these environments suffer the consequences of human activity, mainly resulting from fragmentation and degradation. The reduction of population sizes and the isolation of populations are direct consequences of anthropogenic activities, resulting in inbreeding and genetic drift [3, 4]. Understanding the distribution of genetic variability of tree populations in these areas is fundamental in management programs aimed at conservation and the survival of riparian forest species. There are a large number of tree species that occur in riparian forests and as such the choice of the target species for genetic and ecological studies is crucial. Among them, Calophyllum brasiliense Camb. (Clusiaceae), a Neotropical tree commonly known as “guanandi,”
Internalization of immunoglobulins by endothelial cells in the liver, lung and kidney in hamster with visceral leishmaniasis
MATHIAS Regiane
Revista do Instituto de Medicina Tropical de S?o Paulo , 2001,
Abstract:
A Theoretical Study of Binary and Ternary Hydride-Bonded Complexes N(Beh2)...X with N = 1 or 2 and X = K+ or Ca+2  [PDF]
Regiane Araújo, Boaz Galdino de Oliveira
Open Journal of Physical Chemistry (OJPC) , 2011, DOI: 10.4236/ojpc.2011.13018
Abstract: A theoretical study of hydride bonds formed between beryllium hydride and alkaline earth metal cations is presented. B3LYP/6-311++G(d,p) calculations were used for determining the optimized geometries of the BeH2...K+, BeH2...Ca+2, BeH2...K+...BeH2, and BeH2...Ca+2...BeH2 hydride-bonded complexes, where among them the first are binaries, whereas the last ones are ternaries with the calcium (Ca+2) and potassium (K+) ions mediating the interactions with the beryllium hydride (BeH2). A detailed structural analysis were performed, by which the yielded profiles are in good agreement with results of the infrared vibrational spectrum, mainly in regards to the existence of red-shifted modes followed by enlarged absorption intensity ratios of the B-H bonds of the binary complexes. The capability of either donating or accepting of protons among BeH2, K+, and Ca+2, is currently treated in conformity with Lewis’s acid/base theory, but is also interpreted through the application of the Quantum Theory of Atoms in Molecules (QTAIM), whose formalism consents in the molecular modeling of concentrations and depletions of charge density ruled by the Laplacian shapes, charge transference fluxes, as well as by the local virial theorem of the electronic density with quantification of the kinetic and potential energies along the bonds and interactions.
Avalia??o e progress?o continuada: o que a realidade desvela
Bertagna, Regiane Helena;
Pro-Posi??es , 2010, DOI: 10.1590/S0103-73072010000300012
Abstract: this paper approaches the understanding of assessment during the implementation of the continued progression system in the state of s?o paulo (s?o paulo [state], 1997). by means of qualitative research, the intricate aspects of our schooling reality were studied, with the systematic observation of four groups of students (each group from a different period of basic school, around eight years old) and the collective working moments at school, such as collective pedagogical work, meetings including teachers and parents, school councils, social events and interviews with 07 professionals (five teachers, the pedagogical coordinator and the school director) involved with the four groups with 124 students. it is observed that informal assessment is outstanding in this new school organization, also disclosing new ways of keeping school selectivity and exclusion. by analyzing these assessing practices and contributions from several school individuals, the existence of school selectivity becomes clear, although in a different way: discrete exclusion (bourdieu & champagne, 1998) and/or postponed elimination (freitas, 1995).
Institutional Assessment: contributions to the discussion about the experience in UNESP in the city of Rio Claro
Regiane Helena Bertagna
Educa??o : Teoria e Prática , 2010,
Abstract: This paper aims to rescue the concepts of institutional assessment, characterize howimportant it is in higher education and contribute to the discussion on the topic from theexperience at Sao Paulo State University - UNESP in the city of Rio Claro. The historicalreview of the mentioned concepts and the analysis of documents related to theinstitutional assessment of UNESP allow the resumption of legal and theoreticalframeworks of the proposal and the analysis of these same concepts from the field ofinstitutional assessment.
Cycles, Continuous Progress, Automatic Promotion: contributions for the discuss
Regiane Helena Bertagna
Educa??o : Teoria e Prática , 2008,
Abstract: The present article aims to contribute for the discussion on the process of school organization starting from the concepts of cycles, continuous progress and automatic promotion. For that it was used the historical recover, the analysis of the official documents as well as of the literature that is pertinent to the subject, seeking the contextualization of the origin of those proposals and of the assessment conceptions that are underlying to them. The text tries to explain the subject of the cycles, of the continuous progressand automatic promotion/approval, analyzing how those ideas carry, potentially, thepossibility of the professionals of the education possibility rediscuss the school organization and, implicitly, the marks of the education politics which propose them.
Estudio de la calidad del aceite de oliva virgen de Aragón
Pérez-Arquillué, C.,Juan, T.,Valero, N.,Estopa?an, G.
Grasas y Aceites , 2003,
Abstract: The chemical composition of virgin olive oils (95 samples) from Aragón (Spain) from two successive crop seasons (1997/98 and 1998/99) and its relationship with quality and oxidative stability is examined. The main characteristics were: free acidity 0.5 (% oleic acid), peroxide value 11.8 meq/kg, K232 1.92, K270 0.13, oxidative stability 51.4 h (Rancimat method), and antioxidant phenolic substances 168.5 mg/kg (as caffeic acid). From the distribution of fatty acids, a high percentage of linoleic acid (9.46 %) and a low level of stearic (2.10 %) and arachidic (0.36 %) acids, is worth noting. The effect of sample origin (7 productive regions from Aragón), olive variety (Empeltre and Arbequina), and the different steps through processing are also investigated. However, the major factor affecting results was the plague of olive flies during 1997/98 crop season. Se ha estudiado la composición química de 95 muestras de aceite de oliva virgen de Aragón procedente de dos campa as sucesivas (1997/98 y 1998/99) y su relación con la calidad y la estabilidad oxidativa. Las principales características fueron una acidez de 0,5 (% ácido oleico), índice de peróxidos 11,8 meq/kg, K232 1,92, K270 0,13, estabilidad a la oxidación 51,4 h (método Rancimat) y contenido en polifenoles antioxidantes 168,5 mg/kg (como ácido caféico). Del perfil de ácidos grasos, destaca el elevado contenido en linoleico (9,46 %) y las bajas tasas de esteárico (2,10 %) y aráquico (0,36 %). Se analiza el efecto de la procedencia de las muestras (7 comarcas productoras de Aragón), de la variedad de la aceituna (Empeltre o Arbequina) y de las distintas fases del procesado del aceite. Se destaca la gran influencia sobre la calidad del aceite de la plaga de mosca sufrida durante la campa a de 1997/98.
Voltammetric determination of Zn(II) in Zn-Fe alloy electroplating baths using square-wave voltammetry
Favaron, Regiane;Aleixo, Luiz M.;
Journal of the Brazilian Chemical Society , 2001, DOI: 10.1590/S0103-50532001000200008
Abstract: a routine analytical method for zinc (ii) determination in zn-fe alloy galvanic baths was developed employing square-wave voltammetry with the static mercury drop electrode (smde) as working electrode. real alloy bath samples were analyzed by the standard addition method and recovery tests were undertaken. the supporting electrolytes used in the analyses were 1.0 mol l-1 nh3 / 0.2 mol l-1 nh4cl or 0.1 mol l-1 citric acid (ph=3), presenting peak potentials for zinc (ii), respectively, at -1.30 v and -0.99 v vs. ag|agcl (saturated kcl). the proposed voltammetric method showed a linear response range at 25 °c between 1.0 x 10-5 and 2.2 x 10-4 mol l-1 for zinc (ii), in both electrolytes studied. the interference levels for some metals, such as cu (ii), pb (ii), cr (iii) and mn (ii), which could prejudice zn-fe alloy deposition, were evaluated. these ions did not present significant degrees of interference in the zinc (ii) determination. the zinc (ii) recovery tests for the proposed method exhibited a good agreement with the reference method, showing relative errors lower than 3.0%.
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