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Search Results: 1 - 10 of 187782 matches for " Mario de Andrade;Saraiva "
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Efeito da fertiliza??o fosfatada na produ??o de raízes, liteira e nodula??o de Mimosa caesalpiniifolia benth
Caldas, Glauco Gouvêa;Santos, Mércia Virginia Ferreira dos;Ferreira, Rinaldo Luiz Caraciolo;Lira Junior, Mario de Andrade;Lira, Mario de Andrade;Saraiva, Felipe Martins;
Revista árvore , 2009, DOI: 10.1590/S0100-67622009000200005
Abstract: this work aimed to evaluate the effect of phosphorus fertilization on nodulation, litter deposition and root system development of m. caesalpiniifolia benth, before and after pruning, at the itambé experimental station of pernambuco agronomical institute - ipa in pernambuco, brazil. treatments were levels of phosphorus fertilization (0, 100 and 200 kg.ha-1 of p2o5) arranged in a randomized block design with six replicates in block i and seven in block ii, with the criterion for block formation being uniformization cut date. samplings were taken before and after pruning of the aerial part root length and root, nodule and litter dry matter had similar results before and after pruning. nodule numbers before pruning were 2, 15 and 6 for 0, 100 and 200 kg.ha-1 of p2o5, respectively, and 1, 6 and 7 after pruning. average root lengths ranged from 552 to 734 cm before and from 389 to 455 cm after pruning. the number of nodules presented variation only from august to november 2005, with values from 2 to 15 and from 1 to 7 nodules, before and after pruning, respectively.
Repetibilidade de variáveis produtivas e qualitativas da forragem e da excreta bovina em pastagem de braquiária
Teixeira, Vicente Imbroisi;Dubeux Jr., José Carlos Batista;Mello, Alexandre Carneiro Le?o de;Lira Jr., Mário de Andrade;Lira, Mario de Andrade;Saraiva, Felipe Martins;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000600012
Abstract: the objective of this work was to determine the repeatability and the number of the required evaluations to obtain determination coefficient greater than 90% in the productive and qualitative variables of forage and cattle excreta on a signal grass (urochloa decumbens) pasture. the utilized variables were: fecal production, feces mineral composition, herbage mineral composition around dung pads, feces biometry, herbage mass and herbage rejection around dung pads, urinary volume, and urine chemical composition. a fixed rotational stocking was used, with three days of occupation and 32 or 67 days of resting period, during the rainy and dry seasons, respectively. repeatability analyzes were obtained with the software genes, using the principal component method based on the covariance. the repeatability coefficients (r) had high estimates, and the r2 were equal to or greater than 90%, except for herbage mass at 20-40 cm, for the difference between pre-and post-grazing herbage height of herbage grown on dung pad, and for nitrogen concentration in the urine for the treatment with 3,2 animal units per hectare (r<0.50). for r2 above 90%, the number of evaluations required would be 11, 9, and 9, for the variables forage, feces, and urine, respectively.
Proposal of a Methodology for the Assessment of Security Levels of IoT Wireless Sensor Networks in Nuclear Environments  [PDF]
Marcia Maria Savoine, Mario Olimpio de Menezes, Delvonei Alves de Andrade
World Journal of Nuclear Science and Technology (WJNST) , 2018, DOI: 10.4236/wjnst.2018.82008
Abstract: The use of Wireless Sensor Networks (WSN) associated with the reality of an Internet of Things (IoT) scenario in nuclear environments is a growing security concern. In this context, standards are intensified to preserve the physical integrity of these facilities considered to be highly critical due to the size of the impacts of safety accidents. This paper presents a proposal to build a methodology to evaluate the security levels of WSNs with IoT devices when used in nuclear areas. The proposal is initially based on related work to establish a more concrete initial framework and is structured in consistent steps from previous scientific studies.
The molecular detection of different Leishmania species within sand flies from a cutaneous and visceral leishmaniasis sympatric area in Southeastern Brazil
Saraiva, Lara;Andrade Filho, José Dilermando;Silva, Soraia de Oliveira;Andrade, Antero Silva Ribeiro de;Melo, Maria Norma;
Memórias do Instituto Oswaldo Cruz , 2010, DOI: 10.1590/S0074-02762010000800013
Abstract: over the last 20 years, there has been an increase in the number of leishmaniasis cases in brazil. belo horizonte (bh) is one of the most highly populated brazilian cities that is affected by visceral leishmaniasis (vl). the health services in bh are coordinated by a central nucleus that is subdivided into nine sanitary districts. historically, the highest level of human vl cases was found in the northeast sanitary district (nsd). the objective of our study was to detect leishmania infection in the phlebotomine sand flies collected in the nsd by dissection and molecular approaches. following the occurrence of human vl cases in 2005, entomological captures were performed from july 2006-june 2007. out of the 245 sand flies dissected, only three lutzomyia longipalpis spp contained flagellates. the female sand flies were grouped into 120 pools according to date, collection site and species, with approximately 10 individual sand flies in each pool. subsquently, the dna was extracted and leishmania spp and other parasites were detected and identified by polymerase chain reaction (pcr) and pcr-restriction fragment length polymorfism. leishmania infantum was present in at least 19% of the lu. longipalpis collected, in 3.8% of the nyssomiya whitmani collected, in 33.3% of the evandromiya termitophila collected and in 14.3% of the nyssomiya intermedia collected. when the females of the cortelezzii complex were compared with each other, 3.2% of the females were infected with leishmania braziliensis, whereas 3.2% of the females were infected with trypanosomatids.
Bilateral anomaly in the style of Micropygomyia schreiberi (Martins, Falc?o & Silva) (Diptera, Psychodidae)
Andrade Filho, José Dilermando;Carvalho, Gustavo Mayr de Lima;Saraiva, Lara;Falc?o, Alda Lima;
Revista Brasileira de Entomologia , 2004, DOI: 10.1590/S0085-56262004000400024
Abstract: this paper presents a specimen of phlebotomine sand fly with a bilateral anomaly in the style. although such anomaly be rare in this group of insects, it may cause confusion in taxonomic identification and even lead to description of new species, increasing the number of synonymies. the specimen was measured and compared with the holotype and four paratypes of micropygomyia schreiberi (martins, falc?o & silva, 1975) and confirmed that it belongs, in fact, to this species.
Biogeographical aspects of the occurrence of Nyssomyia neivai and Nyssomyia intermedia (Diptera: Psychodidae) in a sympatric area of the Brazilian savannah
Saraiva, Lara;Carvalho, Gustavo Mayr de Lima;Sanguinette, Cristiani de Castilho;Carvalho, Deborah Aparecida Alves de;Andrade Filho, José Dilermando;
Memórias do Instituto Oswaldo Cruz , 2012, DOI: 10.1590/S0074-02762012000700005
Abstract: nyssomyia intermedia and nyssomyia neivai constitute a species complex associated with leishmania transmission. the aim of this study was to analyse the ecological profiles of the ny. intermedia and ny. neivai populations in a sympatric area in the brazilian savannah along the banks of the velhas river. captures were performed from july 2003-june 2005 in two distinct environments: a gallery forest with various degrees of anthropogenic modification and animal shelters. a total of 20,508 ny. neivai (86%) and ny. intermedia (14%) sandflies were collected. the difference between the proportions of the sandflies that were collected (ny. neivai/ny. intermedia) per bank was significant. the right bank presented a greater number of sandflies (65%) and more preserved vegetation. the abundance of ny. neivai was higher than that of ny. intermedia on both banks. the results demonstrate that anthropic activities can affect the sandfly populations in this area, thereby leading to a reduction in species abundance. nevertheless, the environments with higher levels of antropogenic modification displayed sandfly population numbers that favour the leishmania transmission cycle.
THE RADIO SENSITIZING EFFECT OF METRONIDAZOLE IN MAIZE
VICCINI, LYDERSON FACIO;SARAIVA, LUIZ SéRGIO;ALMEIDA FILHO, JOSé DE;CRUZ, COSME DAMI?O;ANDRADE, ROGéRIO ALVAREZ DE;
Bragantia , 1997, DOI: 10.1590/S0006-87051997000200004
Abstract: the identification of chemical substances which increase the efficiency of radiation is important to make easier the obtention of plants with structural chromosome aberrations which may be used in an alternative program for hybrid maize production. the present work was carried out to investigate the effect of the chemical substance metronidazole in maize seedlings submitted to gamma radiation. several treatments were done, soaking the seeds in solutions with varied concentrations of the active substance combined with solution filtration and gamma radiation. on the third day of the experiment, germination percentage, root and stem lengths were evaluated. at a high concentration (1,250 mg/50 ml) metronidazole behaved as a radiosensibilizer in the presence of radiation. even at a low concentration (250 mg/50 ml; 750 mg/50 ml) and in the absence of radiation, metronidazole behaved as toxic substance.
Nodula??o e produ??o do caupi (Vigna unguiculata L. Walp) sob efeito de plantas de cobertura e inocula??o
Nascimento, Cleópatra Saraiva do;Lira Junior, Mario Andrade;Stamford, Newton Pereira;Freire, Maria Betania Galv?o Santos;Sousa, Clayton Albuquerque;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000200013
Abstract: a field experiment was conducted at crato - ceará to study how green manuring affects nodulation and yield of cowpea (vigna unguiculata (l.) walp) which received different inoculation treatments. the experiment was conducted under a randomized block design, split-split-plot arrangement with four replicates. treatments were green manures for the main plot, nitrogen sources for the split-plot and bi-weekly plant samplings for the split-split-plot. the green manures under study were pearl millet - pennisetum americanum; velvet beans - stizolobium aterrimum; or spontaneous vegetation, while nitrogen sources were native rhizobial population; nitrogen fertilizer 50 kg ha-1 of n as urea; inoculation with relare recommended rhizobial strains - br 3301 + br 3302; or ufrpe recommended rhizobial strains - nfb 6156 + nfb 700. cowpea cultivar patativa was used, which is recommended by regional extension services. from seven days after germination up to final physiological maturity bi-weekly two-plant samples were collected for nodule number and dry mass determination and aerial part dry mass determination. from 60 days after germination weekly harvests of each split-plot were conducted for grain yield determination. velvet bean increased uninoculated cowpea nodulation. cowpea inoculation with recommended strains or native population increase allowed biomass and grain production similar to fertilization with 50 kg ha-1 of n.
Acute myocardial infarction: predictors of mortality at a public hospital in the city of Fortaleza, Ceará state
Ribeiro, Demóstenes Gon?alves Lima;Andrade, Pedro José Negreiros de;Paes Júnior, José Nogueira;Saraiva, Lurildo Ribeiro;
Arquivos Brasileiros de Cardiologia , 2003, DOI: 10.1590/S0066-782X2003000600004
Abstract: objective: to identify the clinical and demographic predictors of in-hospital mortality in acute myocardial infarction with elevation of the st segment in a public hospital, in the city of fortaleza, ceará state, brazil. methods: a retrospective study of 373 patients experiencing their first episode of acute myocardial infarction was carried out. of the study patients, 289 were discharged from the hospital (group a) and 84 died (group b). both groups were analyzed regarding: sex; age; time elapsed from the beginning of the symptoms of myocardial infarction to assistance at the hospital; use of streptokinase; risk factors for atherosclerosis; electrocardiographic location of myocardial infarct; and killip functional class. results: in a univariate analysis, group b had a greater proportion of the following parameters as compared with group a: non-killip i functional class; diabetes; age >70 years; infarction of the inferior wall associated with right ventricular impairment; time between symptom onset and treatment at the hospital >12 h; anteroseptal or extensive anterior infarction; no use of streptokinase; and no tobacco use. in a multivariate logistic regression analysis, only non-killip i functional class, diabetes, and age >70 years persisted as independent factors for death. conclusion: non-killip i functional class, diabetes, and age >70 years were independent predictors of mortality in acute myocardial infarction with elevation of the st segment.
Acute myocardial infarction: predictors of mortality at a public hospital in the city of Fortaleza, Ceará state
Ribeiro Demóstenes Gon?alves Lima,Andrade Pedro José Negreiros de,Paes Júnior José Nogueira,Saraiva Lurildo Ribeiro
Arquivos Brasileiros de Cardiologia , 2003,
Abstract: OBJECTIVE: To identify the clinical and demographic predictors of in-hospital mortality in acute myocardial infarction with elevation of the ST segment in a public hospital, in the city of Fortaleza, Ceará state, Brazil. METHODS: A retrospective study of 373 patients experiencing their first episode of acute myocardial infarction was carried out. Of the study patients, 289 were discharged from the hospital (group A) and 84 died (group B). Both groups were analyzed regarding: sex; age; time elapsed from the beginning of the symptoms of myocardial infarction to assistance at the hospital; use of streptokinase; risk factors for atherosclerosis; electrocardiographic location of myocardial infarct; and Killip functional class. RESULTS: In a univariate analysis, group B had a greater proportion of the following parameters as compared with group A: non-Killip I functional class; diabetes; age >70 years; infarction of the inferior wall associated with right ventricular impairment; time between symptom onset and treatment at the hospital >12 h; anteroseptal or extensive anterior infarction; no use of streptokinase; and no tobacco use. In a multivariate logistic regression analysis, only non-Killip I functional class, diabetes, and age >70 years persisted as independent factors for death. CONCLUSION: Non-Killip I functional class, diabetes, and age >70 years were independent predictors of mortality in acute myocardial infarction with elevation of the ST segment.
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