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Search Results: 1 - 10 of 31198 matches for " Ivan Caldeira Almeida;Lopes "
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Fator de resposta do alecrim-pimenta a diferentes laminas de irriga??o
Alvarenga, Ivan Caldeira Almeida;Lopes, Otávio Diniz;Pacheco, Fernanda Ventorim;Oliveira, Flávio Gon?alves;Martins, Ernane Ronie;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000400006
Abstract: evaluating the response of medicinal plants to irrigation is not very common, especially when they are native species with economic potential, such as the lippia sidoides. thus, this study aimed at evaluating the lippia sidoides response, by using the ky coefficient, and growth, under different irrigation depths. the coefficients were determined from the dry matter and essential oil yields. the experiment used a randomized blocks design, with treatments consisting of seven irrigation depths (0.5, 0.75, 1.0, 1.2, 1.4, 1.65 and 1.9 of the eto), with three replications. the eto was evaluated by using the penman-monteith method and the etr according to the soil water balance. growth was determined by measuring the stem diameter and height, at 35, 56, 77, 98 and 119 days after transplanting. at 120 days of cultivation, samples were collected to determine the dry matter and essential oil yields. the plant responded to water deficit with coefficients above 1.0, for both dry matter and essential oil yields. growth was positively affected by irrigation, reaching higher values for stem diameter and height when the highest irrigation depths were used.
Gas Exchange and Production of Photosynthetic Pigments of Piper aduncum L. Grown at Different Irradiances  [PDF]
Fernanda Ventorim Pacheco, Helbert Rezende de Oliveira Silveira, Amauri Alves Alvarenga, Ivan Caldeira Almeida Alvarenga, José Eduardo Brasil Pereira Pinto, Jean Marcel Sousa Lira
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.412A3014
Abstract:

The species Piper aduncum is a plant with great economic potential, because the essential oil has antimicrobial activity and insecticides. Thus, as the light directly affects photosynthesis process, the present study evaluated the gas exchanges variables and photosynthetic pigments production of P. aduncum grown under different irradiances. Treatments consisted in environments with 100%, 70% and 50% of irradiance and environments with colored nets (red and blue). After 150 days of culture, photosynthetic activity (A), stomatal conductance (gs) transpiration rate (E), internal CO2 concentration (Ci), deficit vapor pressure (DVP), leaf temperature, concentration of internal/external CO2 (Ci/Ca), carboxylation efficiency (A/Ci) and efficiency water use (A/E) were evaluated. Pigments chlorophyll a, b, carotenoids, total and chlorophyll a

Optimization of the Protocol for the in Vitro Cultivation of Piper aduncum L.  [PDF]
Samia Torres Silva, Fernanda Ventorim Pacheco, Ivan Caldeira Almeida Alvarenga, José Eduardo Brasil Pereira Pinto, Suzan Kelly Vilela Bertolucci, Cibelly Pereira Ferreira
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.523363
Abstract:
Piper aduncum L. (Piperaceae) has great potential for economic exploration because of the proven use of its essential oil in the agriculture and in the human health. A technique that improves its propagation, as the tissue culture, becomes necessary. Some parameters must be determined for the successful cultivation in vitro. Thus, this study aimed to determine the salts concentration of MS medium, temperature, luminosity and light quality for in vitro culture of this species. The following treatments were conducted: 1/4MS, 1/2MS, MS and 2MS; 20, 25, 30 and 35; monochromatic blue, red and white lights and the combination of red and blue, using light emitting diodes (LEDs); luminosities of 17, 37, 48 and 73 μmol·m-2·s-1 obtained with cool white fluorescent lamp. After 35 days, the treatments were analyzed. To determine the salts concentration of MS, the variables were evaluated: number of shoots, leaves and roots, length and width of leaves, length and dry mass of root and shoots and percentage of death by necrosis. To the plantlets under different temperatures, length and dry mass of shoot and root, number of shoots, number, length and width of leaves and survival and rooting percentages were measured. The plantlets that were maintained under different luminosities were evaluated for length of shoot and root, dry mass of leaf and root. To evaluate the growth under the LEDs, the length and dry mass of shoot and root, number of shoots and roots, percentage of rooting and sprouting were assessed. The medium 1/4MS and the medium 1/2MS showed better responses for number and length of root, leaf width and shoot length. The temperature 25 provided the highest number of leaves, length of shoot and root, root dry mass and rooting percentage. The luminosity 73 μmol·m-2·s-1 provided higher values in length of root and dry mass of leaf and root. The red LED provided plantlets with greater growth. Thus, for the in vitro cultivation of Piper aduncum, 1/4MS, environment temperature of 25, light intensity of 73
Water stress before harvest of pepper-rosmarin
Alvarenga, Ivan Caldeira Almeida;Valadares, Rafael Vasconcelos;Martins, Ernane Ronie;Oliveira, Flávio Gon?alves;Figueiredo, Lourdes Silva de;Kobayashi, Mauro Koji;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000700005
Abstract: the objective of this work was to assess the effect of different periods of water stress before harvest of pepper-rosmarin (lippia sidoides) on the contents of essential oil and flavonoids. the experiment was carried out during 270 days of cultivation, with drainage lysimeters, in a completely randomized block design with five treatments: 0, 2, 4, 6, and 8 days of water suppression before harvest, with four replicates. fresh and dry matter yield, essential oil content, total flavonoids content, and water potential and temperature of leaves were determined. there was a decrease of approximately 50% in oil content and of 60% in total flavonoid content with the reduction of leaf water potential in 0.3 mpa. essential oil is more sensitive to water stress than total flavonoids.
Duodenopancreatectomia: avalia??o dos resultados em 41 pacientes
Rocha, Luiz Carlos Gomes;Queiroz, Fábio Lopes de;Magalh?es, Eudes Arantes;Santos, Fernando Augusto de Vasconcellos;Caldeira, Daniel Adonai Machado;Ribas, Mateus de Almeida;
Revista do Colégio Brasileiro de Cirurgi?es , 2006, DOI: 10.1590/S0100-69912006000600011
Abstract: background: the aim of this study was to present data from 41 patients submitted to pancreaticoduodenectomies at the hgip - ipsemg, in belo horizonte, mg. methods: from 1997 to 2004, 41 patients underwent pancreaticoduodenectomy as treatment for neoplasms. data regarding the operative procedure were collected prospectively. the main operation was the classical whipple procedure. pylorous-preserving procedures were not used routinely. the pancreaticojejunostomy was performed in a duct-to-mucosa fashion. postoperative mortality and complications were analyzed. to assess the differences in outcome with the increasing experience of the surgical staff, the study was divided in two periods of four years each: from 1997 to 2000, and from 2001 to 2004. results: postoperative complications occurred in 58% of the patients, with a 22% mortality rate. the most frequent complications were pneumonia and surgical wound infection. four patients (10%) developed pancreatic fistulas, which were all treated successfully employing a conservative approach. the need for intra-operative blood transfusion was associated with a worse prognosis. there was a trend toward less complications and deaths between 2001 and 2004, not statistically significant. the 5-year survival rate was 35% for all patients and 26% when considering only those with adenocarcinoma of the head of the pancreas. conclusion: pancreaticoduodenectomy is a complex surgical procedure with high rates of morbidity and mortality. nevertheless, with the increasing experience of surgical, anesthetical, and intensive care staff a reduction in the frequency of complications is noted.
O Programa de Saúde da Família e a Puericultura
Del Ciampo,Luiz Antonio; Ricco,Rubens Garcia; Daneluzzi,Julio César; Del Ciampo,Ieda Regina Lopes; Ferraz,Ivan Savioli; Almeida,Carlos Alberto Nogueira de;
Ciência & Saúde Coletiva , 2006, DOI: 10.1590/S1413-81232006000300021
Abstract: this paper suggests a proposal of child health care, to children and adolescents, to be developed in the family health care programs.
Judiciário e Constitui o Federal de 1988: interpreta- es sobre o direito à propriedade privada face à reforma agrária e ao direito ao território quilombola
Aline Caldeira Lopes,Mariana Trotta Dallalana Quintans
Revista IDeAS : Interfaces em Desenvolvimento, Agricultura e Sociedade , 2010,
Abstract: The article discusses the interpretation of the judiciary on constitutional provisions regarding land reform and settlement of territories remanescentes of quilombos in Brazil. The Constituent Assembly 1987/1988, which resulted in the current constitutional text, was marked by disputes in these areas, captained by representatives of landowners and small landowners and squatters, social movements fighting for land and militant black movement, so that the constitutional text is a reflection of these disputes and crystallization of the same, which is again brought up at the time of regulation by the legislative and constitutional interpretation by the judiciary. Through the study of land conflicts in Rio de Janeiro, with the lens of analysis of fighting lawsuits for conducting the policy of reform and regularization of the territories of former quilombolas communities, we want to understand how the disputes over the interpretation constitutionally established land rights have developed in the years following the Federal Constitution. The approach of the two themes, initially different, the authors started from the perception that both are related from the look on similar procedural tactics used by actors in disputes over land and territory, which are described in our research.
CONSIDERATIONS ABOUT THE PRESERVATION OF DOCUMENTS IN DIGITAL FORMA
Ana Claudia Lopes Almeida
Biblionline , 2011,
Abstract: The growth in the information availability and the increasing of the use of technologies has permitted the proliferation of documents in different formats in the digital environment. This study aims at presenting considerations about the preservation of documents in digital format in new technologies. It was observed the possibility to crate techniques and policies that focus on the preservation of the digital document, and it was also observed the costs and necessity of the technological constant updating. The considerations points out that is vital to take into consideration the creation of technologies related to the preservation of available documents in digital format.
Alice no país da tradu o - Análise da tradu o para o português da novela Alice, do livro La grammatica di Dio, de Stefano Benni Alice no país da tradu o - Análise da tradu o para o português da novela Alice, do livro La grammatica di Dio, de Stefano Benni
Simone Lopes de ALMEIDA
Entrepalavras : Revista de Linguística do Departamento de Letras Vernáculas da UFC , 2012,
Abstract: The present article intends to analyze the translation to Portuguese of the novel Alice, Benni (2007) from the book La grammatica di Dio (2007). The analysis will begin with a reflection on the role of the translator, followed by the main difficulties found in translation and the solutions adopted, always basing the analysis on some of the major theorists of Translation Studies. O presente artigo se prop e a analisar a tradu o feita para o português da novela Alice, Benni (2007) do livro La grammatica di Dio (2007). A análise será iniciada com uma reflex o sobre o papel do tradutor, em seguida abordaremos as principais dificuldades encontradas na tradu o e as solu es adotadas, sempre fundamentando a análise em alguns dos principais teóricos dos Estudos de Tradu o.
Majorana Fermions Signatures in Macroscopic Quantum Tunneling
P. L. S. Lopes,V. Shivamoggi,A. O. Caldeira
Physics , 2014,
Abstract: Thermodynamic measurements of magnetic fluxes and I-V characteristics in SQUIDs offer promising paths to the characterization of topological superconducting phases. We consider the problem of macroscopic quantum tunneling in an rf-SQUID in a topological superconducting phase. We show that the topological order shifts the tunneling rates and quantum levels, both in the parity conserving and fluctuating cases. The latter case is argued to actually enhance the signatures in the slowly fluctuating limit, which is expected to take place in the quantum regime of the circuit. In view of recent advances, we also discuss how our results affect a $\pi$-junction loop.
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