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Search Results: 1 - 10 of 88295 matches for " José Samuel Almeida Navarro "
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Kikuchi-Fujimoto Disease Associated to the Epstein-Barr Virus. A Type of Rare Necrotizing Lymphadenitis and Its Differential Diagnosis  [PDF]
Mónica Belinda Romero Guadarrama, Oscar Daniel Guzmán-Aguilar, Adriana Carolina López-Ugalde, José Samuel Almeida Navarro, Humberto Cruz-Ortíz
Open Journal of Pathology (OJPathology) , 2013, DOI: 10.4236/ojpathology.2013.34034
Abstract: Introduction: Kikuchi-Fujimoto disease (KFD), also known as histiocytic necrotizing lymphadenitis, is a specific and self-limited disease; its etiology is unknown. Some causal microorganisms have been proposed. The objective of the present article is to emphasize the clinicopathological characteristics of this disease that has been associated to the Epstein-Barr virus and to compare the histological changes with other types of necrotizing lymphadenopathies. Material and Methods: We studied 32 patients of the Surgical Pathology Service with necrotizing lymphadenitis, diagnosed in the years from 2004 to 2012 to found more cases of this rare disease in our Institution. Patients were 18 women and 14 men with an average age of 37 years. Results: The lymph nodes were cervical and axillary ones, some were associated to autoimmune diseases and no cause was identified in others. One of the cases, was diagnosed as KFD, presented morphological changes characteristic of this disease, such as subcapsular lymphoid follicles, zones with cell debris, epithelioid macrophages, clear-cytoplasm histiocytes, and immunoblast-reactive lymphocytes. Immunohistochemical markers were determined, such as CD20, CD2, CD4, CD8, CD68, lysozyme, CD56, granzyme B and EBER, which demonstrated the presence of B, T lymphocytes, histiocytes and cells positive to EBER. Histological changes in KFD occurred in three stages: proliferative stage, necrotizing, and xanthomatous. It is important to identify the histological stages of the disease because a differential diagnosis must be performed in regard to lymphadenopathies with necrosis and diverse types of lymphomas. Conclusion: We present a case of necrotizing lymphadenitis (KFD) associated to the Epstein-Barr virus and in some cases it is not possible to render a specific diagnosis based on morphologic findings, alone, and a diagnosis of necrotizing lymphadenitis may be used.

 

Avalia??o do potencial fertilizante de dois resíduos da indústria florestal
Horta,Carmo; Lupi,Samuel; Anjos,Ofélia; Almeida,José;
Revista de Ciências Agrárias , 2010,
Abstract: forestry industry originates residues with distinct properties which can have also differences in its management reutilization. this study aimed at evaluating the fertilizer potential of forestry biomass burning ashes and causticizing lime mud from pulp and paper industry process, which are both residues from forestry industries. in a pot trial we evaluated the effect on ryegrass biomass production and on soil properties due to soil application of increasing amounts of the two forestry industry residues. these amounts corresponds to soil incorporation of 0, 0.5, 1, 3 and 5 t per ha of the residues. it was observed that ashes from biomass burning can be applied to soil without any negative effects, neither on productivity, nor on soil proprieties. this residue might supply some nutrients as k and ca. in the case of soils with a high ca to mg ratio the simultaneous supply of ashes and mg might be necessary. the other residue (causticizing lime mud) should be incorporated into soil long before seeding, due to its caustic effect. it should not be applied on perennial crops. as a fertilizer it might be used for alkali effect. as it has high na content it induced a significant increase in electrical conductivity and exchangeable na. therefore, its application to soil should not be higher than 1 t per ha.
Avalia o do potencial fertilizante de dois resíduos da indústria florestal Assessement of two residues from forestry industry as fertilizers
Carmo Horta,Samuel Lupi,Ofélia Anjos,José Almeida
Revista de Ciências Agrárias , 2010,
Abstract: A indústria florestal produz resíduos com características e potenciais de utiliza o muito distintos. Por um lado, a queima de biomassa florestal para obten o de energia conduz à produ o de grandes quantidades de cinzas como produto final e, por outro lado, durante o processo de produ o da pasta de papel e na sequência do tratamento por caustica o é também produzido um resíduo em quantidades significativas. O objectivo deste trabalho foi avaliar o potencial fertilizante destes dois resíduos, ou seja, das cinzas provenientes da incinera o de biomassa florestal e das cinzas provenientes da caustica o da pasta de papel, resíduos provenientes da indústria florestal. Num ensaio em vasos estudou-se a resposta do azevém à aplica o de doses crescentes destes resíduos que corresponderiam à aplica o ao solo de 0, 0,5, 1, 3 e 5 toneladas por ha. Verificou-se que a cinza de biomassa florestal pode ser aplicada ao solo, n o se observando efeitos negativos na produ o ou propriedades do solo. Esta aplica o conduzirá ao fornecimento de alguns nutrientes, nomeadamente K e Ca. Em solos com rela o Ca/Mg elevada aconselha-se a aplica o simultanea de Mg. O resíduo proveniente da caustica o da pasta de papel, deve ser incorporado no solo com antecedência relativamente à sementeira devido à sua causticidade. Nas culturas plurianuais n o deverá ser utilizado. Apresentou valor como correctivo alcalinizante, possuindo elevado teor em Na que conduziu a um aumento significativo da condutividade eléctrica e do Na de troca, n o se aconselhando uma aplica o em quantidades superiores a 1 t/ha. Forestry industry originates residues with distinct properties which can have also differences in its management reutilization. This study aimed at evaluating the fertilizer potential of forestry biomass burning ashes and causticizing lime mud from pulp and paper industry process, which are both residues from forestry industries. In a pot trial we evaluated the effect on ryegrass biomass production and on soil properties due to soil application of increasing amounts of the two forestry industry residues. These amounts corresponds to soil incorporation of 0, 0.5, 1, 3 and 5 t per ha of the residues. It was observed that ashes from biomass burning can be applied to soil without any negative effects, neither on productivity, nor on soil proprieties. This residue might supply some nutrients as K and Ca. In the case of soils with a high Ca to Mg ratio the simultaneous supply of ashes and Mg might be necessary. The other residue (causticizing lime mud) should be incorporated into soil lo
Aspectos sociopolíticos da epidemia de toxoplasmose em Santa Isabel do Ivaí (PR)
Almeida,Márcio José de; Oliveira,Luzia Helena Herrmann de; Freire,Roberta Lemos; Navarro,Italmar Teodorico;
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000700071
Abstract: in 2002, due to a toxoplasmosis epidemic santa isabel do ivaí, paraná state, was the focus of sanitary investigations. four hundred and twenty six individuals had serology suggestive of acute t. gondii infection (igm reactor), considered the largest outbreak of toxoplasmosis ever reported in the world. this research was meant to identify actions carried out by the sanitation and health services sector at that time, highlighting the political conflicts that took place during the process and identifying the measures taken by the sanitary authorities during and after the epidemic period. this is an interdisciplinary study aimed at understanding major problems of public health like this one. the investigation was based on the contents of documents press and institutional and interviews. according to official data, the epidemic was caused by the contamination of one of the water reservoirs that supply the city. this research showed that political and social factors, as the party instability and the level of political dependence of local society, were largely responsible for the occurrence of the epidemic and for the difficulties faced by the health agents during such crisis.
Microstructural Characterization of Natural Fibers: Etlingera elatior, Costus comosus, and Heliconia bihai
Cláudia I. T. Navarro,Sidnei Paciornik,José R. M. d'Almeida
Conference Papers in Science , 2013, DOI: 10.1155/2013/878014
Abstract: This work describes the structural and morphological characteristics of fibers obtained from the stem of three ornamental plants, namely, Etlingera elatior, Costus comosus, and Heliconia bihai. The stems of these plants are long and nowadays do not have any use, being disregarded. The results obtained showed that the three fibers have a crystalline index of around 58% and are thermally stable to approximately 230°C, 240°C, and 255°C for E. elatior, C. comosus, and H. bihai, respectively. The fibers present an average humidity amount of less than 9% and the thermal degradation peak for the cellulose component varies from 358°C for E. elatior to 379°C for C. comosus. The morphological analysis showed that the fibers present a large variability of the shape of their cross-sections, which are preferentially elongated. These morphological characteristics were used to estimate the error made when one considers the fibers having a circular cross-section. 1. Introduction From very ancient times natural fibers were used in several applications, such as sacks, but starting at the middle of the XX century they began to be largely replaced by synthetic fibers. These man-made fibers present several advantages such as uniformity of properties, including the mechanical ones. However, the increasingly concern of the society with a sustainable development promoted a come back to lignocellulosic materials, and today natural fibers are replacing synthetic ones, such as glass fibers, for example, at the automotive industry [1]. In fact, lignocellulosic fibers are a very attractive option both economically and ecologically, since they are not toxic, have normally a low price, have low density, and are less abrasive to the molds and processing equipment. Besides, they consume less energy to be produced and are biodegradable and neutral with respect to emission [2]. Although one can cite several advantages, as above, the use of lignocellulosic fibers also presents several disadvantages. One can highlight the hydrophilic behavior of these fibers, which can hinder the fiber to matrix adhesion, once several common polymeric matrices are hydrophobic in character. Also, the hydrophilic nature of the lignocellulosic fibers can contribute to fast humidity absorption, leading to a consequent loss of dimensional stability of the manufactured part. Another disadvantage of using lignocellulosic fibers is the intrinsic variability of their properties, due to several causes, encompassing variables ranging from the age of the plant and its harvesting time, to soil fertility and weather
Early treatment of Class III malocclusion: 10-year clinical follow-up
Almeida, Marcio Rodrigues de;Almeida, Renato Rodrigues de;Oltramari-Navarro, Paula Vanessa Pedron;Conti, Ana Cláudia de Castro Ferreira;Navarro, Ricardo de Lima;Camacho, José Gustavo Dala Déa;
Journal of Applied Oral Science , 2011, DOI: 10.1590/S1678-77572011000400022
Abstract: angle class iii malocclusion has been a challenge for researchers concerning diagnosis, prognosis and treatment. it has a prevalence of 5% in the brazilian population, and may have a genetic or environmental etiology. this malocclusion can be classified as dentoalveolar, skeletal or functional, which will determine the prognosis. considering these topics, the aim of this study was to describe and discuss a clinical case with functional class iii malocclusion treated by a two-stage approach (interceptive and corrective), with a long-term follow-up. in this case, the patient was treated with a chincup and an eschler arch, used simultaneously during 14 months, followed by corrective orthodontics. it should be noticed that, in this case, initial diagnosis at the centric relation allowed visualizing the anterior teeth in an edge-to-edge relationship, thereby favoring the prognosis. after completion of the treatment, the patient was followed for a 10-year period, and stability was observed. the clinical treatment results showed that it is possible to achieve favorable outcomes with early management in functional class iii malocclusion patients.
O último refúgio da língua geral no Brasil
Navarro, Eduardo de Almeida;
Estudos Avan?ados , 2012, DOI: 10.1590/S0103-40142012000300024
Abstract: this paper focuses the present situation of língua geral amaz?nica, the reasons for its extinction in most areas in northern brazil and the present efforts towards its revitalization.
Phototoxic and modulatory effects of natural products from the skin of Rhinella jimi (Stevaux, 2002)
Brito, Samuel V.;Ferreira, Felipe S.;Siqueira-Júnior, José P.;Costa, José G. M.;Almeida, Waltécio O.;Coutinho, Henrique D. M.;
Revista Brasileira de Farmacognosia , 2012, DOI: 10.1590/S0102-695X2011005000198
Abstract: the skin of amphibians possesses a large diversity of biologically active compounds that are associated with the natural defenses of these animals against pathogens. five different extracts and fractions were obtained from the skin of rhinella jimi: methanol extract (me), methanol fractions (mf), chloroform extract of methanol extract (cf), aqueous alkaloid fraction (aaf) and aqueous non-alkaloid fraction (anaf). all fractions were evaluated with respect to their antibiotic modifying activity in standard bacterial strains and multiresistant clinical isolates. antagonism was detected with kanamycin and gentamicin when combined with substances obtained from the skin of r. jimi. phototoxic activity was observed in the methanol and chlorophorm fractions, as well as the aqueous non-alkaloid fraction. the antagonistic action was apparently associated with the protection afforded by the bacterial populations that inhabit the skin of this amphibian, preventing colonization by pathogenic fungi. the phototoxic activity demonstrated by natural products from the skin of r. jimi showed an interruption of the bacterial growth after uv exposure. this could indicate an antibacterial effect activated by the uv light, opening a path for carrying the attack by pathogenic fungi, causing the disease related with the amphibian decline.
Using Data Mining with Time Series Data in Short-Term Stocks Prediction: A Literature Review  [PDF]
José Manuel Azevedo, Rui Almeida, Pedro Almeida
International Journal of Intelligence Science (IJIS) , 2012, DOI: 10.4236/ijis.2012.224023
Abstract: Data Mining (DM) methods are being increasingly used in prediction with time series data, in addition to traditional statistical approaches. This paper presents a literature review of the use of DM with time series data, focusing on shorttime stocks prediction. This is an area that has been attracting a great deal of attention from researchers in the field. The main contribution of this paper is to provide an outline of the use of DM with time series data, using mainly examples related with short-term stocks prediction. This is important to a better understanding of the field. Some of the main trends and open issues will also be introduced.
Seguran?a e eficácia do treinamento físico na insuficiência renal cr?nica
Najas, Cláudio Spínola;Pissulin, Flávio Danilo Mungo;Pacagnelli, Francis Lopes;Bet?nico, Gustavo Navarro;Almeida, Igor Costa;Neder, José Alberto;
Revista Brasileira de Medicina do Esporte , 2009, DOI: 10.1590/S1517-86922009000600013
Abstract: chronic renal disease has consequences on several physiological systems. patients present decrease on cardiorespiratory capability, muscular changes, reduced physical performance and worse quality of life. physical activity has been increasingly used as therapy for these patients, including training programs with aerobic and resistance exercises of low to moderate intensity in the interdialytic period and during hemodialysis. however, the benefits of physical exercise therapy to chronic renal patients, the choice of better training programs and the applicability safety of specific exercises are not clear yet. thus, this review has the objective to discuss the aspects concerned with the type of training, better period to perform it and the relevance of their benefits to patients.
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