oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 38 )

2018 ( 281 )

2017 ( 277 )

2016 ( 381 )

Custom range...

Search Results: 1 - 10 of 224605 matches for " C Cardoso "
All listed articles are free for downloading (OA Articles)
Page 1 /224605
Display every page Item
Dendrobium 'Brazilian Fire 101' - New option of color of flowers for the orchid market
Cardoso, Jean C;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000300035
Abstract: establishment of germplasm banks of ornamental species, together with breeding programs is fundamental for the growth of competitive cultivars of flowers that are the same or better quality than those developed in other countries. around 100 progenies from a crossing between the cultivars dendrobium 'tong chai gold' and dendrobium 'black jack' were obtained, from 50 plants which were selected and grown in pots in greenhouse conditions to evaluate the blooming stage and to select the progenies. selection of vigorous growing plants and without disease symptoms were made in the period of cultivation. also, there were evaluated the growing characteristics, rooting, early blooming, as well as the color, number and size of flowers in the first and second blooming. six progenies with superior characteristics were chosen, from which dendrobium 'brazilian fire 101' was obtained. this cultivar shows fast growth, good rooting, early flowering and high quality flowers, with predominantly yellow color, showing the ribs, the center of flowers and lip with red color. the durability of the flowers was 45-60 days after anthesis.
Laeliocattleya 'Brazilian Girl Rosa': cultivar de orquídea para cultivo em vaso
Cardoso, Jean C;
Horticultura Brasileira , 2010, DOI: 10.1590/S0102-05362010000300024
Abstract: the generation of cultivars of ornamental species is strategic for the country development and provides the achievement of plants which are adapted to the climatic conditions for cultivation. nearly 200 plants from an intergeneric cross between a hybrid of cattleya and another hybrid of laelia were subjected to mass selection during the vegetative stage. the ones with quick development and without symptoms of pests and diseases were selected. after three and a half years, a plant presenting vigorous vegetative growth, no symptoms of the crop major pests and diseases and high flowering quality was selected as the new 'brazilian girl rosa' cultivar of laeliocattleya. the first flowering displayed good architecture and a long inflorescence with four flowers presenting an average diameter of 11.7 cm and, also, firm petals and sepals which were proportional to the flower size. pink was the flower predominant color and the senescence occurred 20 days after anthesis.
Gifted Children and Adolescents: Exploring the Perspective of a Group That Still Needs Educational Attention in Brazil  [PDF]
Cristina M. Delou, Fernanda S. Cardoso, Ruth Mariani, Izabel C. P. Paix?o, Helena C. Castro
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.513138
Abstract:

Gifted and talented children are known as those with a valuable potential that may be stimulated to the benefit of humankind. However, in many countries they are known as those that don’t need any specialized educational assistance or stimulation or even worse that they do not exist. In Brazil, the educational Laws recognize this group, but the Brazilian educational system still struggles to properly attend them. Unfortunately, most teachers and professors that are supposed to help this group to get the best of their giftedness and high skills for the good of these kids and humankind, currently ignore them. In 2012 there was the 1st Meeting of Gifted Children and Adolescents sponsored by the Brazilian Council of Giftedness. During this meeting 21 gifted and talented children and adolescents have prepared a document called Declaration of the Gifted Brazilian Child to inform about their expectations and how the society may help them. This gifted group created 8 statements that now we have analyzed and discussed, considering their ideas, the logistics of attending their needs and the limit of these requirements considering Brazilian laws and World rights. According to our results these kids know what they need, what is missing and what they lose when getting no proper educational attention. The maturity of their requests revealed the lack of a proper formation of our professionals involved in their education that ignore and/or suffocate them and their potential knowledge, which may affect not only their future but also the Brazilian development and innovation capacity.

Evolution of female carotenoid coloration by sexual constraint in Carduelis finches
Gon?alo C Cardoso, Paulo Mota
BMC Evolutionary Biology , 2010, DOI: 10.1186/1471-2148-10-82
Abstract: For carotenoid-based ornamental coloration, a model of sexual constraint on females fits the Carduelis data well. The two alternative models (sexual constraint on males, and mutual constraint) were rejected as causing the similarities in carotenoid coloration between males and females. For melanin coloration, the correlation between the sexes was weaker, indicating that males and females evolved independently to a greater extent.This indicates that sexual constraint on females was an important mechanism for the evolution of ornamental carotenoid coloration in females, but less so for melanin coloration. This does not mean that female carotenoid coloration is non-adaptive or maladaptive, because sexual dichromatism could evolve if it were maladaptive. It suggests, however, that most evolution of female carotenoid coloration was male-driven and, when adaptive, may not be an adaptation stricto sensu.Sexual ornaments are often expressed in males and females of the same species, to the same or different degrees. It is well established that male ornaments evolve mainly due to sexual selection [1]. Female ornaments were previously thought to be a non-adaptive consequence of the evolution of male ornamentation [2,3], but several recent studies show that females can also benefit from expressing elaborate ornaments [reviewed in [4-8]]. Therefore, female ornaments appear to be adaptive in many cases.A little addressed question is whether female ornaments are adaptations stricto sensu (i.e., evolved due to selection on females). This is an important question because current utility of a trait does not imply evolutionary causation [9-11]. In the case of female ornaments, it was suggested that they, and the mechanisms that make them adaptive (e.g., male mate preferences), could evolve as pleiotropic consequences to selection on the opposite sex, i.e., sexual constraint [3,12-14]. We use the word "constraint" in the sense of a genetic phenomenon biasing evolution towards certain p
Only Attract Ants? The Versatility of Petiolar Extrafloral Nectaries in Passiflora  [PDF]
Poliana Cardoso-Gustavson, Nathalia L. Andreazza, Alexandra C. H. F. Sawaya, Marilia de Moraes Castro
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.42A059
Abstract:

Passiflora species presents a coevolutive relationship with Heliconiini butterflies, their primary herbivores. The Heliconiini caterpillars are able to detoxify toxic compounds produced by Passiflora, thus morphological defense strategies stand out over chemical innovations. In this framework, we highlight the presence of mimetic structures and extrafloral nectaries (EFN) as morphological strategies. Heliconian butterflies oviposit only on leaves that do not possess previous eggs, so the presence of egg mimics could prevent the oviposition. EFN are glands that offer nectar to territorial and aggressive ants, establishing mutualistic relationships. Here, we present a structural and chemical analysis of petiolar EFN and nectar from Passiflora alata and P. edulis in order to have insights about the implications of these features in deterring heliconian caterpillars. P. alata have one to four stipitate-crateriform EFN while P. edulis possess a pair of convex glands. Butterflies lay their eggs isolatedly or in up to three on leaves of both species. Our morphological results suggest that EFN from P. alata may act as egg mimics. Ontogenetic data suggest that the variation in the number of glands observed in this species is a serial homology,

La lucha de las parteras diplomadas por la práctica de la obstetricia en Rio de Janeiro (Brasil)
Porto,F.; Cardoso,T.C.;
Enfermería Global , 2009,
Abstract: estudio histórico social sobre la lucha simbólica de las prácticas obstétricas realizadas por las parteras diplomadas entre 1832-1876 en rio de janeiro. las fuentes documentales fueron encontradas en rio de janeiro y s?o paulo (br) y analizadas y discutidas basándose en algunos conceptos de pierre bourdieu. los resultados del estudio se?alaron la transformación de la facultad de medicina de rio de janeiro en el curso de partera en la formación de parteras diplomadas, que pasaron a ejercer sus actividades. además, ampliaron su radio de acción con la creación de casas de maternidad. en este sentido, los médicos obstetras, por medio de dispositivo legal, pasaron a administrarlas para avance de la medicina, al igual que hicieron que las mujeres fueran vistas como objeto de estudio.
Acúmulo de nutrientes pela alface destinada à produ??o de sementes
Kano, C;Cardoso, AII;Villas B?as, RL;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000100012
Abstract: the nutrients uptake curve of lettuce plants for seed production was evaluated. the experiment was carried out from september 2003 to february 2004 at the faculdade de ciências agron?micas of the universidade estadual paulista, in botucatu, s?o paulo state, brazil. a randomized block design was used, with five replicates and six treatments (periods of plant collection: 0, 20, 34, 49, 69 and 112 days after transplant (dat)). we utilized the ver?nica lettuce cultivar and evaluated the dry mass and the n, p, k, ca, mg, s, b, cu, fe, mn and zn accumulated in the aboveground part of the plants. the greatest increase in the plant dry matter occurred after the marketable point (34 dat). the period of greatest demand for nutrients was between the beginning of the stem elongation stage and the beginning of the flowering stage. we also observed that for most micronutrients the period of highest demand was after the beginning of the flowering stage. nutrients accumulation in descending order was: k>n>ca>mg>p>s>fe>mn>zn>b>cu.
In vitro growth of Brassocattleya orchid hybrid in different concentrations of KNO3, NH4NO3 and benzylaminopurine
Cardoso, Jean C;Ono, Elizabeth O;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000300017
Abstract: one of the most important applications of plant tissue culture is mass propagation of ornamental plants. this experiment evaluated the effect of different concentrations of nh4no3 and kno3 and bap on the in vitro growth of orchid hybrid brassocattleya 'pastoral'. seedlings of this orchid hybrid were used as explants and cultivated in medium with mineral salts and vitamins from the ms medium (murashige & skoog, 1962), with the macronutrients p, ca and mg reduced by half, and with an addition of 25 g l-1 of sucrose, 0.1 g l-1 of myo-inositol and 1.5 g l-1 of activated charcoal. agar-agar was added (6.5 g l-1) and the ph was adjusted to 5.8. as treatments, four concentrations of the nh4no3 and kno3 (2x; 1x; ? and ? ms medium) and three concentrations of bap (0.0; 0.5 and 1.0 mg l-1) were assayed. the multiplication, growth in height, fresh and dry weight and sugar level in dry weight of sprouts were evaluated. there occurred a higher growth in height with 0.25x nh4no3 and kno3 salts concentrations of ms medium and higher rate of multiplication with combination of nh4no3 and kno3 reduced by half of the ms medium concentration and 1.0 mg l-1 bap.
Deep sea Caridea (Crustacea, Decapoda) from Campos Basin, RJ, Brazil
Cardoso, Irene A.;Serejo, C. S.;
Brazilian Journal of Oceanography , 2007, DOI: 10.1590/S1679-87592007000100005
Abstract: during the campos basin deep sea environmental project coordinated by cenpes/petrobras two collecting campaigns were performed. both used the n/rb astrogaroupa and fishery nets to collect samples from the continental slope in campos basin, rj (21o48's to 22o48's). campaign oceanprof i occurred in february, 2003 and collected 18 samples at depths between 1074 and 1649 m. oceanprof ii occurred in august, 2003 and collected 22 samples at depths between 1059 and 1640 m. a total of 14 caridean species were collected: parapontophilus sp. (crangonidae); glyphocrangon longirostris (smith, 1882) (glyphocrangonidae); lebbeus sp. (hippolytidae); nematocarcinus ensifer (smith, 1882) (nematocarcinidae); acanthephyra eximia smith, 1884; a. quadrispinosa kemp, 1939; a. stylorostratis (bate, 1888); janicella spinicauda (a. milne edwards, 1883); meningodora vesca (smith, 1887); notostomus elegans a. milne edwards, 1881; oplophorus spinosus (brullé, 1839); and systellaspis debilis (a. milne edwards, 1881) (oplophoridae); heterocarpus inopinatus tavares, 1999 and plesionika sp. (pandalidae). three out of these 14 species, parapontophilus sp., lebbeus sp. and plesionika sp. are still under investigation and were not included in the present study. from the 11 species identified nematocarcinus ensifer is a new record for the brazilian continental slope.
Anisotropy in MgB2
Lima, O. F. de;Cardoso, C. A.;
Brazilian Journal of Physics , 2003, DOI: 10.1590/S0103-97332003000400014
Abstract: the first direct measurement of an anisotropic superconducting property in mgb2 was achieved for the bulk nucleation field hc2, in a sample of aligned crystallites. it was found a ratio g(t) = habc2/ hcc2= 1.6 - 1.9, for t varying from 32 k to 26k, between h applied parallel to the ab plane, and along the c direction. the anisotropy of the induced critical current density was evaluated through the bean model to be abc/ jcc? 1.5. we present here a brief review of these studies in connection with current results found in the literature.
Page 1 /224605
Display every page Item


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