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Search Results: 1 - 10 of 15132 matches for " Maximino Rodrigues "
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Gibberellin and cytokinin effects on soybean growth
Leite, Vagner Maximino;Rosolem, Ciro Antonio;Rodrigues, Jo?o Domingos;
Scientia Agricola , 2003, DOI: 10.1590/S0103-90162003000300019
Abstract: soybean is an important crop in brazil. nonetheless, there are no reports on the use of plant growth regulator potential in relation to this crop in the national literature. to better understand the role of these compounds, a pot experiment was carried out to study effects of ga3 and cytokinin on the vegetative growth of the soybean. ga3 (50 mg l-1) was applied as seed treatment, leaving plants with water application as control. ga3 (100 mg l-1) and cytokinin (30 mg l-1) were sprayed on leaves at the physiological stage v3/v4, and 15 days after, cytokinin (30 mg l-1), also as foliar spray. seed treatment decreased plant emergence and initial soybean root growth, but as the season progressed, differences in root growth disappeared; plants were shorter, and presented a decrease in the number of nodes, in stem diameter, in leaf area and in dry matter yield. conversely, foliar application of ga3 led to an increase in plant height, first node height and stem diameter. leaf area and dry matter production also increased as a result of ga3 foliar application. there was no effect of exogenous gibberellin and cytokinin on the number of soybean leaves, number of stem branches and root dry matter. joint application of gibberellin and cytokinin tended to inhibit gibberellin effects. cytokinin applied to leaves during soybean vegetative growth was not effective in modifying any of the evaluated plant growth variables.
Gibberellin and cytokinin effects on soybean growth
Leite Vagner Maximino,Rosolem Ciro Antonio,Rodrigues Jo?o Domingos
Scientia Agricola , 2003,
Abstract: Soybean is an important crop in Brazil. Nonetheless, there are no reports on the use of plant growth regulator potential in relation to this crop in the national literature. To better understand the role of these compounds, a pot experiment was carried out to study effects of GA3 and cytokinin on the vegetative growth of the soybean. GA3 (50 mg L-1) was applied as seed treatment, leaving plants with water application as control. GA3 (100 mg L-1) and cytokinin (30 mg L-1) were sprayed on leaves at the physiological stage V3/V4, and 15 days after, cytokinin (30 mg L-1), also as foliar spray. Seed treatment decreased plant emergence and initial soybean root growth, but as the season progressed, differences in root growth disappeared; plants were shorter, and presented a decrease in the number of nodes, in stem diameter, in leaf area and in dry matter yield. Conversely, foliar application of GA3 led to an increase in plant height, first node height and stem diameter. Leaf area and dry matter production also increased as a result of GA3 foliar application. There was no effect of exogenous gibberellin and cytokinin on the number of soybean leaves, number of stem branches and root dry matter. Joint application of gibberellin and cytokinin tended to inhibit gibberellin effects. Cytokinin applied to leaves during soybean vegetative growth was not effective in modifying any of the evaluated plant growth variables.
Teacher Education and its Relations with Culture and Society: indigenous school education at the center of attention A Forma o de Professores e suas Rela es com Cultura e Sociedade: a educa o escolar indígena no centro das aten es
Maximino Rodrigues,Rogério Ferreira,Maria do Carmo Santos Domite
Bolema: Boletim de Educa??o Matemática , 2009,
Abstract: This paper reflects the current situation surrounding indigenous teacher education by means of the construction of a dialogue among three educators, two of them nonindigenous educators involved with indigenous school education and one indigenous educator committed to the education of his people. Teacher education, situated in a socio-cultural way, is the center of attention in this paper. “Listening” as a way of talking with the “other” is one of the theoretical focuses of this exercise between teacher educators and teachers, which uses dialogue as a means to increase awareness. In the dialogic process mentione, it was possible to realize how rich a dynamic between educators from different cultural contexts can be. The desire of the indigenous educator and his/her people to contribute their ideas to the construction of the indigenous school became evident. This shows the great challenge for non-indigenous educators seeking to contribute to the organization of the school education of distinct indigenous nations. Keywords: Intercultural Dialogue. Teacher Education. Indigenous School Education. Este trabalho reflete a situa o atual em torno da forma o de professores indígenas por meio da constru o de um diálogo entre três educadores, dois deles educadores n oindígenas envolvidos com a educa o escolar indígena e um educador indígena comprometido com a educa o do seu povo. A forma o de professores, de modo sócioculturalmente situado, está no centro das aten es do trabalho. A “escuta” como um meio de falar com o “outro” é um dos focos teóricos desse exercício entre formadores e professores, o qual tem o diálogo como um meio para tomada de consciência. No referido processo dialógico foi possível perceber qu o rica pode ser uma dinamica entre educadores de contextos culturais diferentes. Ficou evidente a vontade do educador/povo indígena colocar suas idéias na constru o da escola indígena. Isso mostra o grande desafio colocado ao educador n o-indígena quando visa contribuir para a organiza o da educa o escolar de distintas na es indígenas. Palavras-chave: Diálogo Intercultural. Forma o de Professores. Educa o Escolar Indígena.
Diagnose foliar em plantas de milho em sistema de semeadura direta em fun o de doses e épocas de aplica o de nitrogênio
Flávia Meinicke Nascimento,Silvio José Bicudo,Dirceu Maximino Fernandes,José Guilherme Lan?a Rodrigues
Pesquisa Aplicada & Agrotecnologia , 2012, DOI: 10.5777/paet.v5.n1.04
Abstract: O objetivo da pesquisa foi avaliar a resposta da cultura do milho em sucess o à culturas de inverno, havendo a antecipa o da aplica o do nitrogênio na cultura da aveia, em doses crescentes, no SPD. O experimento foi conduzido na FCA/UNESP, Campus de Botucatu-SP. O delineamento experimental foi de blocos ao acaso com quatro repeti es, em parcelas subdivididas, sendo consideradas parcelas as doses de nitrogênio aplicadas na cultura da aveia: 0, 20, 40 e 60 kg ha-1 e as doses de nitrogênio aplicadas em cobertura na cultura do milho, foram consideradas subparcelas, variando nas seguintes doses: 60, 80, 100 e 120 kg ha-1, aplicados de forma parcelada em dois estádios da cultura do milho. A diagnose foliar foi feita no estádio de florescimento e após a colheita foi calculada a produtividade. Os resultados indicam que a aplica o antecipada de N na cultura do milho é dependente da cultura antecessora e que as doses e épocas destas aplica es influíram nas concentra es dos nutrientes, refletindo na produtividade do milho. El objetivo de esta investigación fue evaluar la respuesta del maíz en sucesión con cultivos de invierno, con la anticipación de la aplicación de nitrógeno en la avena, en dosis crecientes, en el sistema de siembra directa SSD. El experimento se realizó en la FCA / UNESP, Campus de Botucatu-SP. El dise o experimental fue en bloques al azar con cuatro repeticiones, en parcelas subdivididas, siendo consideradas parcelas las dosis de nitrógeno aplicadas en la avena: 0, 20, 40 y 60 kg ha-1 y las dosis de nitrógeno aplicadas en cobertura en el cultivo de maíz, fueron consideradas subparcelas, variando en: 60 kg, 80, 100 y 120 ha-1, aplicadas de manera parcelada en dos momentos de crecimiento del maíz. El análisis foliar se realizó durante la floración y después de la cosecha se calculó la productividad. Los resultados indican que la aplicación temprana de N en el maíz depende de la cosecha anterior y que las dosis y tiempos de estas aplicaciones han influido en las concentraciones de nutrientes, reflejando en la productividad del maíz.
Evolutionary Changes in the Complexity of the Tectum of Nontetrapods: A Cladistic Approach
Caio Maximino
PLOS ONE , 2008, DOI: 10.1371/journal.pone.0003582
Abstract: Background The tectum is a structure localized in the roof of the midbrain in vertebrates, and is taken to be highly conserved in evolution. The present article assessed three hypotheses concerning the evolution of lamination and citoarchitecture of the tectum of nontetrapod animals: 1) There is a significant degree of phylogenetic inertia in both traits studied (number of cellular layers and number of cell classes in tectum); 2) Both traits are positively correlated accross evolution after correction for phylogeny; and 3) Different developmental pathways should generate different patterns of lamination and cytoarchitecture. Methodology/Principal Findings The hypotheses were tested using analytical-computational tools for phylogenetic hypothesis testing. Both traits presented a considerably large phylogenetic signal and were positively associated. However, no difference was found between two clades classified as per the general developmental pathways of their brains. Conclusions/Significance The evidence amassed points to more variation in the tectum than would be expected by phylogeny in three species from the taxa analysed; this variation is not better explained by differences in the main course of development, as would be predicted by the developmental clade hypothesis. Those findings shed new light on the evolution of an functionally important structure in nontetrapods, the most basal radiations of vertebrates.
Modulation of nociceptive-like behavior in zebrafish (Danio rerio) by environmental stressors
Maximino, Caio;
Psychology & Neuroscience , 2011, DOI: 10.3922/j.psns.2011.1.017
Abstract: zebrafish have been demonstrated to react consistently to noxious chemical stimuli and present reliable phenotypes of stress, fear, and anxiety. in this article, we describe the modulation of nociceptive-like responses of zebrafish to fear-, stress-, and anxiety-eliciting situations. animals were exposed to an alarm substance, confinement stress, or a novel environment before being injected with 1% acetic acid in the tail. the alarm substance and confinement stress reduced the display of erratic movements and tail-beating behavior elicited by acetic acid. the novelty of the environment, in contrast, increased the frequency of tail-beating behavior. the results suggest that descending modulatory control of nociception exists in zebrafish, with apparent fear- and stress-induced analgesia and anxiety-induced hyperalgesia.
Modulation of nociceptive-like behavior in zebrafsh (Danio rerio) by environmental stressors
Caio Maximino
Psychology & Neuroscience , 2011,
Abstract: Zebrafsh have been demonstrated to react consistently to noxious chemical stimuli and present reliable phenotypes of stress, fear, and anxiety. In this article, we describe the modulation of nociceptive-like responses of zebrafsh to fear-, stress-, and anxiety-eliciting situations. Animals were exposed to an alarm substance, confnement stress, or a novel environment before being injected with 1% acetic acid in the tail. The alarm substance and confnement stress reduced the display of erratic movements and tail-beating behavior elicited by acetic acid. The novelty of the environment, in contrast, increased the frequency of tail-beating behavior. The results suggest that descending modulatory control of nociception exists in zebrafsh, with apparent fear- and stress-induced analgesia and anxiety-induced hyperalgesia.
Dynamics of Boolean Networks with Scale-Free Topology
Maximino Aldana
Physics , 2002,
Abstract: The dynamics of Boolean networks (the N-K model) with scale-free topology are studied here. The existence of a phase transition governed by the value of the scale-free exponent of the network is shown analytically by analyzing the overlap between two distinct trajectories. The phase diagram shows that the phase transition occurs for values of the scale-free exponent in the open interval (2,2.5). Since the Boolean networks under study are directed graphs, the scale-free topology of the input connections and that of the output connections are studied separately. Ultimately these two topologies are shown to be equivalent. An important result of this work is that the fine-tuning usually required to achieve stability in Boolean networks with a totally random topology is no longer necessary when the network topology is scale-free.
Resíduos organicos como recondicionante de subsolo degradado e efeitos na atividade microbiana e fertilidade em cultivo de barbatim?o
Calgaro, Hemerson Fernandes;Cassiolato, Ana Maria Rodrigues;Valério Filho, Walter Veriano;Fernandes, Francisco Maximino;Maltoni, Kátia Luciene;
Revista árvore , 2008, DOI: 10.1590/S0100-67622008000600012
Abstract: following the construction of the hydroelectric power station of solteira island in the late 1960s, some areas were deforested and used as "lending areas". the soil was extracted from these areas, which acquired chemical and biological characteristics far from the ideal. this work aimed to evaluate the use of organic residues as a reconditioner of degraded subsoil and quantify its effects on soil microbial activity and fertility in 'barbatim?o' (stryphnodendron polyphyllum mart.) cultivation. the area is located at the unesp/ ilha solteira campus farm, in selvíria - ms. four sections (repetitions) of 250 m2 (10 x 25 m) were allocated, with 10 treatments for each, as follows: control; liming; fertilizing+n+p; liming+n+p; n+p+water hyacinth; n+p+sugar cane bagasse; n+p+water hyacinth+sugar cane bagasse; liming+n+p+water hyacinth; liming+n+p+sugar cane bagasse and liming+n+p+water hyacinth+sugar cane bagasse. the chemical characteristics of the subsoil were evaluated as well as plant growth, carbon microbial biomass (cmb) and released c-co2 , metabolic quotient (qco2) and microbial quotient (qmic), in 5 subsoil sample collecting times (june, august, november and december, 2005 and march, 2006). the subsoil displayed the same acid and poor nutrient level characteristics after a year. during the experiment, the cmb presented stabilization tendencies and the qco2 and qmic decreased in the same period. in all, even below the ideal level, the organic residues showed better results, with small positive differences for water hyacinth. cmb exhibited seasonal variations.
Treatment of Bilateral Recurrent Dislocation of Hip Pros-thesis with Malpositioned Well-Fixed Shell: A Case Report  [PDF]
Fernando Judas, Luis Maximino, Francisco Lucas
Open Journal of Orthopedics (OJO) , 2013, DOI: 10.4236/ojo.2013.33031
Abstract: Dislocations of total hip prostheses cause pain and patient dissatisfaction. Recurrent dislocations are difficult to treat mainly when the acetabular metal shell is well-fixed. The purpose of this article was to describe the surgical technique used for the treatment of a bilateral recurrent posterior dislocation after a cementless total hip prosthesis, caused by excessive inclination of acetabular components, in a 72-year-old patient. On both sides, acetabular metal shell, porouscoated, was well-fixed. Revision of the entire acetabular component could be an appropriate therapeutic option because it was malpositioned. Nevertheless, a conservative operation was performed. The metal shell was left in situ and the preexisting polyethylene liner was removed and replaced by a new undersized cross-linked polyethylene liner, then, cemented into the shell and properly oriented. An acetabular cemented augmentation reinforced by 3 cortical screws was associated with the reconstruction. This report suggests that cementation of new liner into a malpositioned well- fixed metal shell associated with an acetabular cemented augmentation is a simple and safe technique for the management of recurrent hip dislocation, for elderly patients in which it is advisable to avoid a major revision hip surgery by medical comorbidities. Nonetheless, further studies with medium-and long-term follow-up are needed to validate this technique.
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