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Search Results: 1 - 10 of 591168 matches for " Júlio C. L.;Lima "
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Parcelamento do fertilizante fosfatado no algodoeiro em sistema de cultivo irrigado e de sequeiro
Aquino, Leonardo A.;Berger, Paulo G.;Oliveira, Rubens A.;Neves, Júlio C. L.;Lima, Tricia C.;Batista, Carlos H.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2011, DOI: 10.1590/S1415-43662011000500005
Abstract: the objective was to evaluate the application of phosphorus doses in parcels in the cotton crop in the systems of cultivation under irrigation and rainfed, being aimed the higher efficiency of phosphate fertilization, in comparison to the traditional application, only at sowing. the experiment was carried out in quartzanic neossoil, in the north region of minas gerais. the adopted design was randomized blocks, with three replicates. the treatments were the doses of 50 and 120 kg ha-1 of p2o5 applied in four ways: ps, p1, p2 and p3 [100/0; 75/25; 50/50; 25/75% of the dose of phosphate fertilizer applied, respectively at the sowing and at 35 days after the emergence (dae)], in the irrigated and rainfed crops. two additional treatments, without p, in the crop without and with irrigation, completed the eighteen studied treatments. the increase of the p doses increased the dry mass of aerial part and the number of reproductive structures at 80 dae, the relative efficiency of the phosphate fertilization and the productivity of cotton in bull. the response to p doses occurred only under irrigation. the parceled application of the phosphate fertilizer did not increase the efficiency of the fertilization in the cotton farm in quartzanic neossoil.
Rice grown in nutrient solution with doses of manganese and silicon
Zan?o Júnior, Luiz Ant?nio;Fontes, Renildes Lúcio Ferreira;Neves, Júlio César Lima;Kornd?rfer, Gaspar Henrique;ávila, Vinícius Tavares de;
Revista Brasileira de Ciência do Solo , 2010, DOI: 10.1590/S0100-06832010000500016
Abstract: although silicon is not recognized as a nutrient, it may benefit rice plants and may alleviate the mn toxicity in some plant species. the dry matter yield (root, leaf, sheaths and leaf blade) and plant architecture (angle of leaf insertion and leaf arc) were evaluated in rice plants grown in nutrient solutions with three mn doses, with and without si addition. the treatments were arranged in a 2 x 3 factorial [with and without (2 mmol l-1) si; three mn doses (0.5; 2.5 and 10 μmol l-1)], in a randomized block design with 4 replications. the experimental unit was a 4 l plastic vase with 4 rice (metica-1 cultivar) plants. thirty nine days after keeping the seedlings in the nutrient solution the plant dry matter yield was determined; the angle of leaf insertion in the sheath and the leaf arc were measured; and the si and mn concentrations in roots, sheaths and leaves were determined. the analysis of variance (f test at 5 and 1 % levels) and the regression analysis (for testing plant response to mn with the si treatments) were performed. the si added to the nutrient solution increased the dry matter yield of roots, sheaths and leaf blades and also decreased the angle of leaf blade insertion into the sheath and the foliar arc in the rice plant. additionally, it ameliorated the rice plant architecture which allowed an increase in the dry matter yield. similarly, the addition of mn to the solution improved the architecture of the rice plants with gain in dry matter yield. as si was added to the nutrient solution, the concentration of mn in leaves decreased and in roots increased thus alleviating the toxic effects of mn on the plants.
Produ??o de beterraba fertilizada com jitirana em diferentes doses e tempos de incorpora??o ao solo
Silva, Maiele L. da;Bezerra Neto, Francisco;Linhares, Paulo C. F.;Sá, José R. de;Lima, Jailma S. S. de;Barros Júnior, Aurélio P.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2011, DOI: 10.1590/S1415-43662011000800006
Abstract: this study was conducted from july to november 2009, at universidade federal rural do semi-árido (ufersa), mossoró, rn, brazil, to assess the production of sugar beet (beta vulgaris l.) fertilized with scarlet starglory (merremia aegyptia l.) at different doses and times of soil incorporation. the experimental design was a randomized complete block with treatments arranged in a 4 x 4 + 1 factorial, with three replicates and 72 plants per plot, where the first factor consisted of the doses of scarlet starglory (5.4, 8.8, 12.2 and 15. 6 t ha-1 on dry basis), the second one by the times of soil incorporation (0, 10, 20, and 30 days after sowing - das), and additional treatment with 80 t ha-1 of cattle manure. the sugar beet cultivar grown was early wonder. the best productive performance for sugar beet was obtained in the dose of 15.6 t ha-1 of scarlet starglory incorporated into the soil at time 0 day. economic indicators in the dose of scarlet starglory of 15.6 t ha-1 at time 0 day of its incorporation into the soil were higher than those obtained with the use of 80 t ha-1 of cattle manure. the cultivation of sugar beet is agro-economically viable with the use of scarlet starglory as green manure.
Desenvolvimento de mudas de cedro-rosa em solo contaminado com cobre: tolerancia e potencial para fins de fitoestabiliza??o do solo
Caires, Sandro Marcelo de;Fontes, Maurício Paulo Ferreira;Fernandes, Raphael Bragan?a Alves;Neves, Júlio César Lima;Fontes, Renildes Lúcio Ferreira;
Revista árvore , 2011, DOI: 10.1590/S0100-67622011000700004
Abstract: agricultural, industrial and mining activities are the mainly factors related to soil contamination, as well the reuse of urban and/or animal residues. these activities can produce heavy metals accumulation in soils, which are potentially dangerous chemical elements to environmental quality and to well-being of living beings. phytoremediation is a technology for rehabilitation of degraded areas which aims the soil decontamination. forest species can immobilize and export to outside of the system larger amounts of chemical elements from contaminated soil, because they have high biomass production. the objective of this study was to evaluate the cedrela fissilis development in contaminated soil by heavy metals. with this propose, seedlings were cultivated in greenhouse and in a contaminated soil by cu (0, 60, 80, 100, 500 mg kg-1) for 105 days. after this period some soil and plant parameters were evaluated. seedlings of c. fissilis presented crescent increments of dry matter until 100 mg kg-1 of cu, with reduction of vegetal development in the high doses. in general, it was verified high partition of dry matter to root system than aerial part. plant cu contents were correlated with applied doses in the soil. the root bioconcentraction factor of c. fissilis indicates potential capacity of this tree specie to phytostabilization works in contaminated soils.
Planejamento estatístico de experimentos como uma ferramenta para otimiza??o das condi??es de biossor??o de Cu(II) em batelada utilizando-se casca de nozes pec? como biossorvente
Brasil, Jorge L.;Vaghetti, Júlio C. P.;Royer, Betina;Santos Jr, Araci A. dos;Simon, Nathalia M.;Pavan, Flávio A.;Dias, Silvio L. P.;Lima, Eder C.;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000300008
Abstract: in order to reduce the total number of experiments for achieving the highest amount of adsorbed cu2+ (qmax) using pecan nutshells (carya illinoensis) as biosorbent, a full 24 factorial design with two central points was carried out (mass of biosorbent- m, ph, initial metallic ion concentration- c0, time of contact- t). in order to continue the optimization of the system, a central composite surface analysis design with two factors and five central points was carried out. the maximum amount of cu2+ taken up by the pecan nutshells was 20 mg g-1. these results were confirmed by determining a cu2+ isotherm using the best conditions attained by the statistical design of experiments.
A educa o para além do capital
Júlio César Fran?a Lima
Trabalho, Educa??o e Saúde , 2006, DOI: 10.1590/s1981-77462006000100014
Abstract:
Caracteriza??o da variabilidade de freqüência cardíaca e sensibilidade do barorreflexo em indivíduos sedentários e atletas do sexo masculino
Kawaguchi, Leandro Yukio A.;Nascimento, Aline C.P.;Lima, Márcio S.;Frigo, Lúcio;Paula Júnior, Alderico Rodrigues de;Tierra-Criollo, Carlos Júlio;Lopes-Martins, Rodrigo Alvaro Brand?o;
Revista Brasileira de Medicina do Esporte , 2007, DOI: 10.1590/S1517-86922007000400004
Abstract: introduction: the capacity to vary the heart rate represents important physiologic role in the daily life. the variations of the rr intervals is dependent of biological modulators as the autonomic nervous system. those variations constitute the heart rate variability (hrv). methods: 10 athletes (atl) and 10 sedentary (sed) male individuals (20-35 age) were submitted to digital electrocardiography, in rest, before, during and after the maneuver. the values of rr were analyzed (software matlab 6.1), in the time domain. results: both sed and atl presented mean heart rate of 73.5 bpm ± 2,5 and 51 bpm ± 2,4, respectively. related to the rr intervals, the group of sed presented average of 826.58 bad ± 5.3 and the group atl, 1189.18 ± 6.9. the return time of sympathetic system after the maneuver was 72 ± 12 s (sed) 37 ± 6 s (atl). the return time of parasympathetic system was 80 ± 11 s (sed) and 40 ± 8 s (atl). the pnn50 was of 10 ± 3,3 (sed) and 42,10 ± 6,9 (atl). the value of rr variation above the average of the whole sign was 343 ± 40 (sed) and 175 ± 39 (atl). the rr variation below the average of the whole sign was 281 ± 27 (sed) and 425 ± 26 (atl). conclusions: the analysis of hrv associated to the valsalva maneuver can represent a simple, but important tool, for possible inferences on physical aptitude.
Clinical-epidemiological evaluation of respiratory syncytial virus infection in children attended in a public hospital in midwestern Brazil
Calegari, Tatiany;Queiroz, Divina A.O.;Yokosawa, Jonny;Silveira,lio L.;Costa, Louren?o F.;Oliveira, Thelma F.M.;Luiz, Lysa N.;Oliveira, Renata C.;Diniz, Francisco C.;Rossi, Lívia M.G.;Carvalho, Cláudio J;Lima, Ana Cláudia;Mantese, Orlando C;
Brazilian Journal of Infectious Diseases , 2005, DOI: 10.1590/S1413-86702005000200006
Abstract: respiratory syncytial virus (rsv) is responsible for annual respiratory infection outbreaks in infants and young children worldwide, frequently causing bronchiolitis and pneumonia. we evaluated clinical and epidemiological features of acute respiratory infections (aris) caused by respiratory syncytial virus (rsv) in children less than five years old. nasopharyngeal aspirate samples from children with ari symptoms, attended at the 'hospital das clínicas' - federal university of uberlandia, mg, brazil, were collected and tested for rsv by the immunofluorescence assay (ifa). patients' clinical and epidemiological data were also obtained. from april 2000 to june 2003, 317 nasopharyngeal samples were collected from children less than 54 months old. seventy-six samples (24.0%) were positive for rsv, with 53% (40/76) obtained from male patients. hospitalization occurred in 50% (38/76) of the cases, with an average period of 10.6 days, in most cases (87%, 33/38) occurring in children less than 12 months of age. although an association between this age group and the presentation of more severe clinical symptoms was observed, such as bronchiolitis in 51% (27/53) of the patients and pneumonia in 19% (10/53), no patients died. rsv was found from february to august, with the highest incidence in may. conclusions: rsv is an important agent that causes aris; the clinical manifestations varied from mild to severe and patients frequently required hospitalization; rsv mostly affected children less than one year old.
Os cientistas brasileiros visitam a Amaz?nia: as viagens científicas de Oswaldo Cruz e Carlos Chagas (1910-1913)
Schweickardt, Júlio César;Lima, Nísia Trindade;
História, Ciências, Saúde-Manguinhos , 2007, DOI: 10.1590/S0104-59702007000500002
Abstract: the article analyzes reports from two scientific journeys into the amazon conducted by the instituto oswaldo cruz, in 1910 and 1913, under the leadership of oswaldo cruz and carlos chagas, respectively. these reports contributed to the construction of representations and images of the region. field observations not only provided data for the study and control of tropical diseases but also had a hand in the movement to denounce the serious sanitation conditions under which rubber workers labored. journeys through the amazon valley put the scientists in direct contact with the environment and with sick populations; these travels also made them face the huge challenges of learning about malaria and trying to control it. analyses of these reports are part of studies on 'portraits of brazil', which raise issues within the history of public health policies. in this endeavor to reveal the process by which scientific records are constructed, we worked with primary sources, from manuscripts to official texts.
Do "inferno florido" à esperan?a do saneamento: ciência, natureza e saúde no estado do Amazonas durante a Primeira República (1890-1930)
Schweickardt, Júlio César;Lima, Nísia Trindade;
Boletim do Museu Paraense Emílio Goeldi. Ciências Humanas , 2010, DOI: 10.1590/S1981-81222010000200012
Abstract: in the first two decades of the 20th century, publications of euclides da cunha, alberto rangel and carlos chagas about the amazon presented from different perspectives a critique of what they considered unrealistic visions originated in the travel accounts of naturalists of 18th and 19th centuries. alternatively, they proposed the analysis of the region from the perspective of new scientific knowledge, which included several areas - from geology to tropical medicine. recent studies have indicated the need for more research on the institutions and local scientific practices, both in the development of ideas about the region and the definition of public policies. this article is proposed on this perspective, to reflect on the different ideas that were built by the medical-scientific thought about nature and society in the state of amazonas during the brazilian first republic, when the rise and decline of the amazonian rubber was experienced. it is understood that local physicians actively participated in scientific discussions related to tropical medicine, and put into practice the main theses about control and prevention of endemic diseases like malaria and yellow fever. this set of ideas and practices contributed to the definition of sanitation of the city of manaus and the hinterland of state of amazonas.
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