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Search Results: 1 - 10 of 185960 matches for " Paulo de Albuquerque;Veiga "
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Tolerancia de sementes de soja à desseca??o
Veiga, Adriano Delly;Rosa, Sttela Dellyzete Veiga Franco da;Silva, Paulo de Albuquerque;Oliveira, Jo?o Almir de;Alvim, Patrícia de Oliveira;Diniz, Kênia Almeida;
Ciência e Agrotecnologia , 2007, DOI: 10.1590/S1413-70542007000300025
Abstract: the anticipated harvest of seeds after physiological maturity allows the obtaining of the better quality physiological, crop rotation and optimization of the processing structures. seeds do not tolerate dissection over all the stages and acquire tolerance in particular stages during maturation, this acquisition of dissection tolerance may coincide with physiological maturity and in soybean seeds, it take place at r7 stage with moisture close from 45% to 50%. so, the present research was intended to evaluate dissection tolerance of soybean seeds. the seeds were harvested at three phenologic stages, r6, r6/r7 and r7 and were submitted to artificial drying at 35oc to 20% of water content and at 42oc to 13%. a fourth harvest was accomplished with field dried seeds, these being utilized as a control. the quality of seeds was evaluated by tests of germination, electric conductivity and of cold, of dry weight of seedlings and lea protein electrophoresis.the experimental design was completely randomized in factorial scheme with four replicates. the control was compared singly with each treatment. from the results, it follows that both germinability and dissection tolerance of soybean seeds increase with the natural water loss in the field; seeds harvest at r7stage show increased physiologic quality, distinct pattern of lea proteins and greater dissection tolerance than at r6 and r6/r7stages; seeds drying harvested close to maturity induces the synthesis of lea proteins; and seeds harvested at r7 stage present physiological quality and lea protein pattern similar to the ones of filed dried seeds up to 14% of water content.
Armazenamento e qualidade de sementes de tomate enriquecidas com micronutrientes e reguladores de crescimento
Albuquerque, Kênia Almeida Diniz;Oliveira, Jo?o Almir;Silva, Paulo de Albuquerque;Veiga, André Delly;Carvalho, Bruno Oliveira;Alvim, Patrícia de Oliveira;
Ciência e Agrotecnologia , 2010, DOI: 10.1590/S1413-70542010000100002
Abstract: the objective of this study was to evaluate the effect of the application of micronutrients and growth regulators on the germination, vigor, activity of some enzymes, and on the total protein contents in tomato seeds during the storage. the seeds were treated with the chemicals starter?, cellerate?, and stimulate? at the dosages corresponding to 0%, 50%, 100%, 150%, and 200% of the dose recommended by the manufacturer, utilizing the film-coating technique. the evaluations were performed at 0, 6, and 12 months of storage by the following parameters: percentage of germination, percentage and emergency velocity rate, activity of enzymes endo-a-mannanase and esterase, total protein content, and health. the completely randomized design in a 3 x 5 x 3 factorial structure was utilized, namely, three chemicals, five doses, and three storage periods with four replicates of 50 seeds per treatment. coating with the chemicals based on micronutrients and growth regulators and storage interfere on the activity of enzyme endo-a-mannanase in the tomatoes and seeds; the activity of enzyme esterase increases with the storage of tomato seeds, pointing to an increase in the deterioration process; there is an increase in the total protein content in tomato seeds throughout the storage period; chemicals based on growth regulators promote an increase in emergency velocity rate of the tomato seedlings when applied at pre-sowing at the recommended dose.
Uma superfície política para o ‘Leviat Benevolente’
Paulo Roberto de Albuquerque Bomfim
Terra Brasilis : Revista da Rede Brasileira de História da Geografia e Geografia Histórica , 2003,
Abstract: Em A Montanha Mágica, Thomas Mann (1980) contrap e, nas vozes dos personagens Leo Naphta e Lodovico Settembrini, respectivamente, um “comunismo” religioso-militar, embri o de um futuro misticismo de tinta nacionalista, devotado ao Estado forte, a um racionalismo liberal – supostamente humanista – de cunho inegavelmente eurocêntrico. Se quando Mann come a a escrever o romance em 1912 ainda considera-se um homem “apolítico” e em seguida defende a causa alem durante a Guerra, quando finaliza su...
FRONTEIRA AMAZ NICA E PLANEJAMENTO NA éPOCA DA DITADURA MILITAR NO BRASIL: INUNDAR A HILEIA DE CIVILIZA O?
Paulo Roberto de Albuquerque Bomfim
Boletim Goiano de Geografia , 2010,
Abstract: O presente estudo tem como objetivo examinar o significado do antigo projeto geopolítico, baseado na retóricada ocupa o territorial, durante a época da ditadura militar no Brasil (1964-1985). Tal projeto adquire um novo carátera partir do uso de teorias e conceitos em voga na época, como é o caso das teses de Fran ois Perroux sobreos polos de desenvolvimento. Ao mesmo tempo, buscando uma maior expans o territorial do Estado brasileiro,a Amaz nia converte-se no foco das políticas de ocupa o do território. Neste trabalho, pretende-se real ar oquanto a proje o econ mica do Estado em dire o ao norte do país n o somente foi um dos argumentos maisdifundidos do período desenvolvimentista como também contribuiu – dentro da lógica geopolítica – para aocupa o predatória da regi o. O debate sobre a problemática aqui discutida resulta em uma contribui o parapensar o passado e o presente daqueles territórios concebidos como “vazios” na América Latina, a exemplos dosert o no caso do Brasil e do deserto no caso Argentino.
3D segmentation and visualization of lung and its structures using CT images of the thorax  [PDF]
Pedro P. Rebou?as Filho, Paulo Cesar Cortez, Victor Hugo C. de Albuquerque
Journal of Biomedical Science and Engineering (JBiSE) , 2013, DOI: 10.4236/jbise.2013.611138
Abstract:

Computing systems have been playing an important role in various medical fields, notably in image diagnosis. Studies in the field of Computational Vision aim at developing techniques and systems capable of detecting various illnesses automatically. What has been highlighted among the existing exams that allow diagnosis aid and the application of computing systems in parallel is Computed Tomography (CT). CT enables the visualization of internal organs, such as the lung and its structures. Computational Vision systems extract information from the CT images by segmenting the regions of interest, and then recognize and identify details in those images. This work focuses on the segmentation phase of CT lung images with singularity-based techniques. Among these methods are the region growing (RG) technique and its 3D RG variations and the thresholding technique with multi-thresholding. The 3D RG method is applied to lung segmentation and from the 3D RG segments of the lung hilum, the multi-thresholding can segment the blood vessels, lung emphysema and the bones. The results of lung segmentation in this work were evaluated by two pulmonologists. The results obtained showed that these methods can integrate aid systems for medical diagnosis in the pulmonology field.

Immunological Intolerance and Tolerance by Antigenic Co-Stimulation  [PDF]
Alexandre Paulo Machado, Gabriel de Paula Albuquerque, Letícia Souza Santana, Olga Fischman Gompertz
Open Journal of Immunology (OJI) , 2017, DOI: 10.4236/oji.2017.74006
Abstract:
The plasticity and dynamism in the immune responses to both self and environmental stimulation promote the maintenance and adaptation of a system that tends to harmoniously survive and evolve. Fluctuating antigenic forces coexist within the immune system and oscillate between order and chaos to the equilibrium. Thus, when mounting a response to internal or environmental antigens, the main host responses can be divided into two immunological categories. The first, a well-adapted mechanism of complex multi-cellular organisms classically known as tolerance, promotes persistent immunological responses. In the second, opposite way, the modulation of inflammatory immune responses occurs, which we call “intolerance”. Tolerance and intolerance can be mediated by humoral molecules, such as inflammatory compounds, complement, and antibodies, and by different cell types, such as sentinel cells, antigen-presenting cells, and cells that orchestrate the immune response. Tolerogenesis is important in vertebrates because it predisposes species to adapt to self and environmental negative-selective forces. This process depends, in large part, on antigenic co-stimulation (AgCS), which operates as a multi-integrated network formed by all immune and non-immune cells of the body that establishes tolerant immunoregulatory interactions from cells to cells and from cells to the environment. Antigenic distribution, quantity, nature, route of administration, and antigenic convergence on co-stimulatory pathways, and concurrent infections, and the presence of microorganisms (commensals and pathogens) in more than one site are important factors for activating AgCS. To conclude, the AgCS route is a natural immune response generated by heterogeneous APC profile with centralized regulation that promote the counterbalance between intolerant e tolerant status, which can have several applications in the medical and biological fields.
Risk of Surgical Site Infection in Patients Undergoing Total Knee Arthroplasty  [PDF]
Paulo Cezar Vidal Carneiro de Albuquerque, Alvaro Ant?nio Bandeira Ferraz, Clarissa Miranda Carneiro de Albuquerque Olbertz, José Miguel Francisco da Silva Souza, Alessandro Henrique da Silva Santos, Paula Eduarda Miranda Carneiro de Albuquerque
Open Journal of Orthopedics (OJO) , 2018, DOI: 10.4236/ojo.2018.87033
Abstract: The aim of this study was to determine the participation of risk factors in the infection in patients who underwent total knee arthroplasty. This is a prospective longitudinal study, descriptive and analytical, that was carried out between January 2013 and December 2015. Eighty-one procedures were performed in 78 individuals, 16 males and 62 females. Three subjects underwent the procedure on both knees. The following predictive factors of infection were identified: Age, gender, comorbidities, evaluation of functional physical status using the American Society of Anesthesiologists Physical Status Classification System (ASAPS), length of hospital stay, use of prophylactic antibiotics and duration of surgery. The data was tabulated in a database using a Microsoft Excel spreadsheet. For statistical analysis, the chi-square test, chi-square test for independence and Fischer’s exact test were applied, all at a significance level of 5% (0.05). Surgical site infection was more prevalent in males (23.5%), age over 70 years (25.0%), for left gonarthrosis (17.9%), in the presence of comorbidities (17.9%), when hospital stay was 6 or more days (27.8%), in total arthroplasties of left knee (17,9%), in surgical times of up to 2 hours (20%), in the use of prophylactic antibiotics (16.7%) and in level II classification in the ASAPS (18.8%). The independence test was not significant in any of the evaluated factors (p-value greater than 0.05). The most prevalent bacteria identified in cases of infection was Staphylococcus aureus (33.2%). The risk factors studied were not statistically significant.
Desenvolvimento e valida??o de um novo sistema de sele??o de talentos para a ginástica olímpica feminina: a Bateria PDGO
Albuquerque, Patrícia Arruda de;Farinatti, Paulo de Tarso Veras;
Revista Brasileira de Medicina do Esporte , 2007, DOI: 10.1590/S1517-86922007000300006
Abstract: the artistic gymnastics (ag) is based on a wide range of motor activities that require specific capacities. however, tests to detect the potential for its excellence in early ages are still lacking. the purpose of the present study was to develop a test for talent selection in female artistic gymnastics. the activities used by brazilian specialists were investigated by questionnaire and the international literature was reviewed. the 30 mentioned activities were compiled in a 22-test battery that was applied in 55 children of 5 to 9 years-old. results obtained were treated by principal component factor analysis. individual factor scores were extracted from the first factor, which were adopted as an indicator of the performance potential in artistic gymnastics (ppag). at last, a stepwise multiple regression was calculated, using the factor scores as independent variable, producing an equation with eight activities to estimate ppag. construct validity, cross validity and reliability of the equation were tested. sixteen experienced gymnasts and 19 apprentices were tested for cross validation. mean ppag found for the gymnasts (85.11) was significantly higher than data for the apprentices (54.80), indicating that the battery can discriminate the performance potential. construct validity was confirmed by exploratory factor analysis, suggesting that the activities were related to a similar dimension of motor performance. inter- and intra-observers reliability was tested by linear correlation and student t test. the correlation values ranged between 0.83 and 1.00 (p < 0.05). no differences were detected between the means in all test situations. in conclusion, the application of the proposed battery revealed to be fast and simple, as well associated with low cost and easy understanding. furthermore, data suggested that it has good validity and reproducibility, authorizing its application in initial talent selection for ag. however, additional studies should be conducted to co
The CD133/1+ cell subset from human subcutaneous adult fat retains hemogenic potential  [PDF]
Camila Santos de Moraes, Paulo Roberto Albuquerque Leal, Daniel Fabiano Ferreira, Fernando Serra, Eliana Abdelhay, Claudia Sondermann Freitas
Stem Cell Discovery (SCD) , 2012, DOI: 10.4236/scd.2012.22006
Abstract: Research has shown that cells from adult fat tissue can effect long-term blood reconstitution. Fat-derived multipotentiality was ascribed to CD34+ perivascular populations from its prominent microvasculature, that represent mostly non-hemogenic, mesenchymal cells, although this tissue contains a CD34+45+ subset committed to a hemogenic fate. Here, in order to analyze cell subsets presenting hemogenic capabilities within fat, CD133/1+ and pericytes, the latter defined by CD140b (PDGFRb, Platelet-Derived Growth Factor Receptor Beta) expression, were immunomagnetically selected from stromal-vascular fractions (SVF). In Vitro Colony Forming Unit (CFU) assays were negative for CD140b+ pericytes and positive for CD133/1+ cells when a prolonged CFU assay was performed, revealing fat as another store of primitive progenitors that retain hemogenic potential.
Doses intermitentes de estatina em pacientes em hemodiálise com LDL-colesterol espontaneamente baixo
Suassuna, Paulo Giovanni de Albuquerque;Bastos, Marcus Gomes;
Arquivos Brasileiros de Cardiologia , 2008, DOI: 10.1590/S0066-782X2008000200007
Abstract: background: mortality in dialysis patients remains high and is due mainly to cardiovascular causes. inflammation has a role in the genesis of accelerated atherosclerosis, vascular calcification, malnutrition and anemia, and a huge impact on the survival of these patients. the pleiotropic effects of statins can be a therapeutic option for reducing chronic inflammatory processes of patients undergoing hemodialysis. objective: to evaluate the effects of low doses of simvastatin on inflammatory markers, hematimetric and nutritional parameters of patients undergoing hemodialysis. methods: clinically-stable patients undergoing hemodialysis were classified according to their baseline ldl-cholesterol levels in two groups: those with levels below 100mg/dl (group 1) and those with levels equal to or greater than 100mg/dl (group-2), and were treated with simvastatin during eight weeks. group 1 received 20mg only after each session of hemodialysis (intermittent dose), whereas group 2 received 20mg/daily. laboratory data, erythropoietin resistance index and nutritional parameters were obtained before and after treatment. results: a significant and equivalent reduction in c-reactive protein levels in both groups was observed (35.97±49.23% vs 38.32±32.69%, p=0.86). in group 1, there was also a tendency towards reduced resistance to erythropoietin (228.6±16.2 vs 208.9±16.2, p=0.058) and improvement of hematimetric parameters (hematocrit: 33.1±5.9% vs 36.1±4.5%, p=0.021). conclusion: intermittent doses proved to be as effective as the usual dose in reducing c-reactive protein levels and resistance to erythropoietin, besides improving the hematimetric parameters, indicating an important reduction of the cardiovascular risk evaluated by these parameters.
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