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Search Results: 1 - 10 of 128182 matches for " Carlos David Vera;Gon?alves "
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Controle genético da regenera??o in vitro em progênies de Eucalyptus grandis
Bravo, Carlos David Vera;Gonalves, Ant?nio Natal;Dias, Carlos Tadeu dos Santos;Vencovsky, Roland;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000800014
Abstract: the genetic control of in vitro direct regeneration was tested on seedlings of ten open-pollinated progenies from the base population of atherton origin of eucalyptus grandis at university of s?o paulo (brazil). seeds were germinated in vitro, after twenty days, distal hypocotyls segments from 196 seedlings per progeny were inoculated in culture media at generalized complete randomized block design, with two experimental units per block and seven repetitions, using the interaction blocks by progenies as an estimate of the experimental error. at week 14 from the inoculation bud induction was evaluated. regeneration among progenies were significantly different (p<0.0001). regeneration varied from 11 to 60%. the narrow-sense heritability between means of experimental units for in vitro regeneration was height. (h2m=0.94), indicating a strong genetic control of the trait within the population and also a high maternal effect. high variability within the study sample was found.
Retrospective study of the occurrence of Cyclospora cayetanensis at Clinical Hospital of the University of S?o Paulo Medical School, SP
Gonalves, Elenice Messias do Nascimento;Uemura, Iaiko Horroiva;Castilho, Vera Lúcia Pagliusi;Corbett, Carlos Eduardo Pereira;
Revista da Sociedade Brasileira de Medicina Tropical , 2005, DOI: 10.1590/S0037-86822005000400009
Abstract: cyclospora cayetanensis causes watery diarrhea in tropical countries, among travelers and after ingestion of contaminated water and food. very little is known about its epidemiology, pathogenic aspects and reservoirs. in brazil, its prevalence is unknown and to date there have been reports of three outbreaks. we report here a retrospective study of 5,015 stool samples from 4,869 patients attended at clinical hospital of the university of s?o paulo medical school, sp, brazil between april 1996 and january 2002, with 14 cases of cyclospora cayetanensis being detected there was a prevalence of 0.3%. of the 14 infected patients, the mean age was 38 years and 71.4% were female. ten patients presented symptoms; six presented levels of immunological markers and five patients were immunodeficient.
Microsporidiosis in a Brazilian University Hospital: case report
Gonalves, Elenice Messias do Nascimento;Uemura, Iaiko Horroiva;Orban, Magali;Castilho, Vera Lúcia Pagliusi;Corbett, Carlos Eduardo Pereira;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2006, DOI: 10.1590/S0036-46652006000600010
Abstract: this is the report on a patient with chronic diarrhea caused by microsporidia. he is married, infected with hiv and has low cd4 cell count. the diagnosis was established through stool parasite search using concentration methods and gram - chromotrope staining technique. ileum biopsy was also performed in this case. the etiological diagnosis may be established in a clinical laboratory, by chromotrope staining technique in routine microscopic examination of stool specimens.
Retrospective study of the occurrence of Cyclospora cayetanensis at Clinical Hospital of the University of S o Paulo Medical School, SP
Gonalves Elenice Messias do Nascimento,Uemura Iaiko Horroiva,Castilho Vera Lúcia Pagliusi,Corbett Carlos Eduardo Pereira
Revista da Sociedade Brasileira de Medicina Tropical , 2005,
Abstract: Cyclospora cayetanensis causes watery diarrhea in tropical countries, among travelers and after ingestion of contaminated water and food. Very little is known about its epidemiology, pathogenic aspects and reservoirs. In Brazil, its prevalence is unknown and to date there have been reports of three outbreaks. We report here a retrospective study of 5,015 stool samples from 4,869 patients attended at Clinical Hospital of the University of S o Paulo Medical School, SP, Brazil between April 1996 and January 2002, with 14 cases of Cyclospora cayetanensis being detected there was a prevalence of 0.3%. Of the 14 infected patients, the mean age was 38 years and 71.4% were female. Ten patients presented symptoms; six presented levels of immunological markers and five patients were immunodeficient.
Africanized honey bees (Apis mellifera L.) are more efficient at removing worker brood artificially infested with the parasitic mite Varroa jacobsoni Oudemans than are Italian bees or Italian/Africanized hybrids
Guerra Jr., José Carlos Vieira;Gonalves, Lionel Segui;Jong, David De;
Genetics and Molecular Biology , 2000, DOI: 10.1590/S1415-47572000000100016
Abstract: africanized honey bees are more tolerant of infestations with the mite varroa jacobsoni than are honey bees of european origin. the capacity of these bees to detect and react to brood infested with this mite could be one of the factors determining this tolerance. we tested colonies of africanized bees headed by queens from swarms collected in ribeir?o preto, s?o paulo state. the italian colonies had queens imported directly from the usa, or from the brazilian island of fernando de noronha, where varroa-infested italian colonies have been maintained, untreated, since 1984. recently sealed worker brood cells were artificially infested by opening the cell capping, inserting live adult female mites and resealing the cells. control cells were treated in the same way, but without introducing mites. the ability of the africanized honey bees to recognize and remove this artificially infested brood was compared with that of first generation italian/africanized hybrid bees, and with the two groups of "pure" italian bees, in three separate experiments. africanized colonies removed a mean of 51% of the infested brood, while italian/africanized hybrid colonies removed 25%. africanized colonies also removed a significantly greater proportion of infested brood than did italian colonies, headed by queens from the usa (59 vs. 31%, respectively). similarly, when africanized colonies were compared with colonies of italian bees from fernando de noronha, the former were found to be significantly more efficient at removing infested brood (61 vs. 35%, respectively), even though the population of italian bees on this island has been exposed to and survived varroa infestations (without treatment) for more than 12 years. only the africanized honey bees removed a significant proportion of varroa-infested brood, when the data was corrected for brood removal from control cells.
Mancha fisiológica do mam?o: uma perspectiva de obten??o de material genético tolerante
Oliveira, Jurandi Gonalves de;Pereira, Messias Gonzaga;Martelleto, Luiz Aurélio Peres;Ide, Carlos David;
Revista Brasileira de Fruticultura , 2005, DOI: 10.1590/S0100-29452005000300028
Abstract: the occurrence of the physiological disturbance known as "skin freckle on papaya" (mfm) has reduced the quality of papaya (c. papaya l.) cultivated in brazil. the acquisition of genetic material tolerant to mfm is a very good strategy to overcome or at least to decrease the negative effects of such disturbance. in this present work, 22 papaya genotypes were evaluated in relation to the mfm, in the northern region of rio de janeiro state. the fruits were collected from a field testing installed in an experimental station of pesagro-rio, in the municipality of macaé. the experiment consisted of a randomized complete block design with four replications, with eight individual plants per plot. the data were submitted to the analysis of variance and to the mean comparison test. firstly it was conducted a combined analysis involving the two ripening stages - green-mature and ? mature. as the genotype by ripening stage was significant, each individual ripening stage was analyzed. based on the anova, the genotypic determination index (h2) for the trait mfm was estimated, which demonstrated that the evaluation on the second stage (? mature) shows higher value (67.85%) than in the green-mature stage (28.95%). thus, in such stage there is a better differentiation among genotypes. based on such results, it may be stated that there is expressive genetic variability among the evaluated genotypes, for this trait. so, there is a positive perspective of obtaining better genotypes - hybrids and varieties - in terms of tolerance to mfm via breeding programs. considering the strategy of breeding procedures, associated to adjustment of cultural practices, it represents new possibilities of growing papaya without the limitations caused by the mfm.
Características do uso de benzodiazepínicos por mulheres que buscavam tratamento na aten??o primária
Nordon, David Gonalves;Akamine, Karin;Novo, Neil Ferreira;Hübner, Carlos von Krakauer;
Revista de Psiquiatria do Rio Grande do Sul , 2009, DOI: 10.1590/S0101-81082009000300004
Abstract: introduction: benzodiazepines are psychotropic drugs whose prescription is indicated for acute crises of anxiety, insomnia and convulsions. its use is most of the times inadequate. this study aimed at identifying the profile of the female benzodiazepine user at primary care and the characteristics of use. methods: all patients over 18 years old were questioned about their benzodiazepine use at a primary care unit from sorocaba, brazil, in the year of 2008. results: benzodiazepines were used by 13.14%, mainly by older women (50-69 years old), in a stable relationship and illiterate. the use was mainly due to insomnia (48.14%), of longer half-life drugs, chronic (over 6 months, 89.14%), with first prescription by the general practitioner (47.82%) and high rates of interruption (91.3%) failures (69.05%). discussion: the use is 3.3 times higher than described in the literature for women of similar profiles, with generally inadequate prescriptions, independently of the first prescriber (specialist or not). conclusion: use is chronic, mainly by older women, with lower educational level and who are in a stable relationship, for correct reasons, but for inadequate time of treatment.
Africanized honey bees (Apis mellifera L.) are more efficient at removing worker brood artificially infested with the parasitic mite Varroa jacobsoni Oudemans than are Italian bees or Italian/Africanized hybrids
Guerra Jr. José Carlos Vieira,Gonalves Lionel Segui,Jong David De
Genetics and Molecular Biology , 2000,
Abstract: Africanized honey bees are more tolerant of infestations with the mite Varroa jacobsoni than are honey bees of European origin. The capacity of these bees to detect and react to brood infested with this mite could be one of the factors determining this tolerance. We tested colonies of Africanized bees headed by queens from swarms collected in Ribeir o Preto, S o Paulo State. The Italian colonies had queens imported directly from the USA, or from the Brazilian Island of Fernando de Noronha, where varroa-infested Italian colonies have been maintained, untreated, since 1984. Recently sealed worker brood cells were artificially infested by opening the cell capping, inserting live adult female mites and resealing the cells. Control cells were treated in the same way, but without introducing mites. The ability of the Africanized honey bees to recognize and remove this artificially infested brood was compared with that of first generation Italian/Africanized hybrid bees, and with the two groups of "pure" Italian bees, in three separate experiments. Africanized colonies removed a mean of 51% of the infested brood, while Italian/Africanized hybrid colonies removed 25%. Africanized colonies also removed a significantly greater proportion of infested brood than did Italian colonies, headed by queens from the USA (59 vs. 31%, respectively). Similarly, when Africanized colonies were compared with colonies of Italian bees from Fernando de Noronha, the former were found to be significantly more efficient at removing infested brood (61 vs. 35%, respectively), even though the population of Italian bees on this island has been exposed to and survived varroa infestations (without treatment) for more than 12 years. Only the Africanized honey bees removed a significant proportion of varroa-infested brood, when the data was corrected for brood removal from control cells.
Triagem de genótipos de hortali?as para resistência a Meloidogyne enterolobii
Melo, Osvander David de;Maluf, Wilson Roberto;Gonalves, Ranoel José de Sousa;Gonalves Neto, álvaro Carlos;Gomes, Luiz Antonio Augusto;Carvalho, Regis de Castro;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000800007
Abstract: the objective of this work was to identify genotypes of lettuce, sweet potato, bean, tomato, and capsicum resistant to the nematode meloidogyne enterolobii (syn. m. mayaguensis), and to classify them according to their resistance degree. the following were evaluated: 10 genotypes of lettuce, 8 of sweet potato, 10 of bean and snap bean, 25 of capsicum, and 6 of tomato genotypes. reproduction factor and reproduction index were determined, and genotypes were classified according to their resistance degree to the nematode. moderate levels of resistance were observed in the bean cultivar aporé and in the accessions of pepper bgh-433 and bgh-4285, and of sweet pepper, pim-031, pix-022i-31-07-02, and pix-022i-31-13-01. all tomato genotypes are susceptible to m. enterolobii. lettuce cultivars julia, hortência, ver?nica, grand rapids and babá de ver?o, and sweetpotato clones ufla07-49 and ufla07-53 are very resistant to the nematode. apparently, the resistance to m. enterolobii is controlled by different genes from the ones which confer resistance to other species and races of meloidogyne.
Conventional and microwave-assisted reaction of N-hydroxymethylphthalimide with arylamines: synthesis of N-(arylaminomethyl)-phthalimides
Sena, Vera L. M.;Srivastava, Rajendra M.;Simone, Carlos A. de;Gonalves, Simone M. da Cruz;Silva, Ricardo O.;Pereira, Mariano A.;
Journal of the Brazilian Chemical Society , 2007, DOI: 10.1590/S0103-50532007000600018
Abstract: an efficient and easy synthesis of compounds: 2-phenylaminomethyl-isoindole-1,3-dione (5a), 2-[(2-clorophenylamino)methyl]-isoindole-1,3-dione (5b), 2-[(3-clorophenylamino)methyl]-isoindole-1,3-dione (5c), 2-[(4-clorophenylamino)methyl)-isoindole-1,3-dione (5d), 2-[(2-fluorophenylamino)methyl]-isoindole-1,3-dione (5e), 2-[(3-fluorophenylamino)methyl]-isoindole-1,3-dione (5f), 2-[(4-fluorophenylamino)methyl]-isoindole-1,3-dione (5g), 2-[(2-nitrophenylamino)methyl]-isoindole-1,3-dione (5h), 2-[(3-nitrophenylamino)methyl]-isoindole-1,3-dione (5i), 2-[(4-nitrophenylamino)methyl]-isoindole-1,3-dione (5j), 2-[1h-(1,2,4)triazol-3-yl-aminomethyl)-isoindole-1,3-dione (5k) and 2-([1,2,4]-triazole-4-yl-aminomethyl)-isoindole-1,3-dione (5l), is described. the general synthesis procedure starts from n-hydroxymethylphthalimide 3 and aryl- and [1,2,4-triazol-3- and 4-yl]-amines 4a-l by conventional and solvent-free microwave-mediated. the reaction of 3 with 4l turned out to be a very rapid and high-yielding one. a comparison of these two methods has been made. three probable mechanisms of formation of n-(arylaminomethyl)-phthalimides (one in the solution phase and two in the microwave-accelerated conditions are proposed. crystallographic analyses of 5d furnished the correct conformation of this molecule. ab initio molecular orbital calculations of 5d using 6-31g* basis set were performed and the results were comparable to the x-ray data.
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