Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 229 )

2018 ( 362 )

2017 ( 336 )

2016 ( 416 )

Custom range...

Search Results: 1 - 10 of 143568 matches for " Elisa Helena Le?o Fernandes "
All listed articles are free for downloading (OA Articles)
Page 1 /143568
Display every page Item
The Contribution of Waves in Mixing Processes of the Patos Lagoon Plume  [PDF]
Eduardo de Paula Kirinus, Wiliam Correa Marques, Julliet Correa da Costa, Elisa Helena Leo Fernandes
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.35102
Abstract: The analysis of wave effects above salinity is important in order to define mixing processes and their potential to change density gradients, since action in the region of the Patos Lagoon plume is highly dynamic. This paper aims to evaluate the influence of waves on the mixing pattern of the adjacent continental shelf. Constantly marked by tides and circulation variations, changing from flood to ebb tide, salinity stands as a major parameter for analysis. The study is based on hydrodynamic numerical modeling experiments using the TELEMAC3D model and waves generated by the wind using the TOMAWAC coupled model. The comparison between the situations considering the waves generated by the wind and without waves was made through time series analysis, stratification series, transversal cross sections, longitudinal cross sections, salinity mean fields and diagrams by Richardson and Brünt-V?is?l?s frequency parameters. With the cross sections analysis, the mixing effect generated by the waves was observed, demonstrating clearly that the waves were capable of raising the superficial salinity in regions far from the Patos Lagoon entrance, while at the entrance, the wave effects enhanced the mixing on the deepest layers, decreasing the saline intrusion and expanding the plume more radially on the surface. The space-temporal diagrams were effective to demonstrate the modulation effect of the waves over the salt mixing of saline waters, revealing that wave effects decrease the stratification as well as the Brünt-V?is?l?s frequency and increase the period of buoyancy, due to the mixing increase.
A importancia das teorias éticas na prática da bioética
Leo, Helena Maria Carneiro;
Revista Brasileira de Saúde Materno Infantil , 2010, DOI: 10.1590/S1519-38292010000600022
Abstract: the knowledge search without limits and the concern of practicing abuses and exaggerations as a result of curiosity divide the human behavior. the ethical theory comes from the need for rational justification of moral actions, toward the own human conscience and other people. as the theory consists of an integrated complex of ethical, coherent and fundamental principles, the ethical theories knowledge is essential for the reflection, especially when is not possible to fulfill all moral requests. the bioethics, originally considered source of general norms and rules for disciplining ethically the scientific investigation, can be regard as a sort of professional ethical code to scientists and researchers, being a group of moral and philosophical reflection concerning life in general and medical practices in particular. in this article, by a literature review, it was aimed to describe and discuss the importance of ethical theories in the bioethics' practice.
Asociación Colombiana de Psiquiatría Desafíos como asociación
Beatriz Helena Caama?o León
Revista Colombiana de Psiquiatría , 2011,
Heinemann, Riana Jord?o Barrozo;Pinto, Marcos Franke;Ponsano, Elisa Helena Giglio;Perri, Silvia Helena Venturoli;
Ciência Rural , 2002, DOI: 10.1590/S0103-84782002000200025
Abstract: the negative influence of cold shortening on meat texture is well known. because of that, the determination of the muscle contraction extent represents an important analytical tool for the optimization of the industrial procedures. in this work, two methodologies to evaluate cold shortening were compared. biceps femoris, longissimus dorsi and semimembranosus muscles from 9 cattle carcasses with three different fat thickness grades were paired analyzed by both methodologies. longissimus dorsi muscle showed the shortest sarcomere length while semimembranosus m. showed the longest one (p<0.05). samples with higher fat thickness showed longer sarcomere length (p<0.05). there was no significant difference between the two methodologies studied (p>0.05), which suggests the possibility of using the simpler method for cold shortening evaluation.
Heinemann Riana Jord?o Barrozo,Pinto Marcos Franke,Ponsano Elisa Helena Giglio,Perri Silvia Helena Venturoli
Ciência Rural , 2002,
Abstract: é bem conhecido o fato de que o encurtamento pelo frio pode influenciar negativamente a textura da carne. Por isso, a determina o do grau de contra o do tecido muscular é um recurso analítico de grande importancia quando se estuda a otimiza o dos procedimentos industriais. Neste trabalho, foram avaliadas comparativamente duas metodologias de microscopia. Para isso, os músculos Biceps femoris, Longissimus dorsi e Semimembranosus obtidos de nove carca as bovinas com três diferentes graus de acabamento foram analisados de forma pareada por ambos os métodos. O músculo Longissimus dorsi apresentou menor comprimento de sarc mero e o m. Semimembranosus o maior (p<0,05). As amostras com maior espessura de gordura de cobertura apresentaram maior comprimento de sarc mero (p<0,05). N o houve diferen a significativa entre os valores obtidos pelas duas metodologias estudadas (p>0,05), revelando a possibilidade de emprego do método mais simples.
Perdas causadas por Coccus viridis (Hemiptera: Coccidae) em mudas de Coffea arabica L.
Flávio Lemes Fernandes,Marcelo Coutinho Pican?o,Maria Elisa Fernandes,Tarcísio Visintin Galdino
EntomoBrasilis , 2009,
Abstract: Coccus viridis (Green) danifica plantas jovens e adultas de Coffea arabica Linnaeu. No entanto, nada se sabe sobre a magnitude dos danos causados por esta praga. Assim, este trabalho teve por objetivo estudar as rela es entre o ataque de C. viridis e as perdas causadas por este inseto a C. arabica. Este trabalho foi conduzido em casa de vegeta o na Universidade Federal de Vi osa. Foram utilizadas sementes da linhagem IAC 15 da variedade “Catuaí vermelho” de café (C. arabica). Para a confec o dos tratamentos esta praga foi criada em casa de vegeta o separada do experimento. Os tratamentos foram: plantas infestadas e n o infestadas por adultos e ninfas da cochonilha verde. As plantas foram nutridas com solu o nutritiva. Durante 110 dias foram avaliados: números de adultos e de ninfas de primeiro, segundo e terceiro ínstares, área foliar, diametro do caule, altura das plantas em todas repeti es. No final do experimento avaliou-se o peso das raízes, caule, folhas e total. Os pesos das raízes, matéria seca total, área foliar e diametro do caule de plantas n o atacadas por C. viridis superaram em 1,31; 1,41; 1,50 e 8,93 vezes, respectivamente o peso de plantas atacadas. As variáveis selecionadas foram: diametro do caule (cm), área foliar (cm2), peso de raízes (g), ninfas, adultos e total das cochonilhas. Concluindo que a planta de C. arabica é afetada de forma diferente entre seus órg os e que a ninfa de terceiro ínstar e adultos s o as fases que mais causam danos a C. arabica.Losses Caused by Coccus viridis (Green) (Hemiptera: Coccidae) on Seedlings of Coffea arabica L.Abstract. Coccus viridis (Green) cause losses on seedling and old plants of Coffea arabica (Green). However, nothing is known about of the damages caused by this pest. Thus, the objective of this work was to evaluate the relations between atack of C. viridis and the losses caused by this insect. on C. arabica. This work was conduced in greenhouse at Federal University of Vi osa. Seed coffee plants line IAC 15, variety “Catuaí vermelho” (C. arabica) were used. The insects were reared into greenhouse and separated of the experiment. The treatments were: infested plants and no infested by adults and nymphs of the green scale. The plants were nourished with compound nutrient solutions. For 110 days evaluated: numbers of adults and nymphs of instar first, second and third, leaf area, diameter of stem and plant height in all repetition. At the end of the experiment were evaluated weights of root, stem, leave and total. The weight of root, total dry matter, leaf area and diameter of the stem at
Nursing care on percutaneous transluminal coronary angioplasty: integrative literature review
Alessandra Mazzo, Elisa Mara Lima Magalh?es, Helena Megumi Sonobe, Fernanda Berchelli Gir?o
Revista de Enfermagem UFPE On Line , 2010,
Abstract: Objective: to identify in the literature studies about the performance of the nursing team in care to patients subject to Percutaneous Transluminal Coronary Angioplasty (PTCA). Methodology: the integrative literature review was carried out in the MEDLINE and LILACS databases, through the guiding question: how is nursing care performed during Percutaneous Transluminal Coronary Angioplasty? The inclusion criteria were articles published in English and Portuguese between 1999 and 2009. Results: of the 20 articles found, four were selected in MEDLINE and analyzed using a data collection instrument. All of them were published in the last five years, three in European journals and one in an American, and 50% presented low level of evidence. The subjects studied were the withdrawal of the introducer, nursing care and different protocols, variants of the time spent in nursing activity according to the type of access in PTCA, and nurses’ educative actions. Conclusion: nursing has a very important role in patient care in PTCA and there is need for more and deeper studies regarding this subject.
Avalia??o da porosidade de microcápsulas contendo proteína bioativa por porosimetria de mercúrio e adsor??o de nitrogênio
Porte, Luciana Helena Maia;Leo, Maria Helena Miguez Rocha;Porte, Alexandre;
Química Nova , 2011, DOI: 10.1590/S0100-40422011000900018
Abstract: microcapsules containing lactoferrin were produced by spray drying using dextrin:octenylsuccinate starch, as wall materials. porosity characteristics of spray-dried microcapsules were investigated by mercury intrusion porosimetry and nitrogen adsorption. the outer and inner structures of microcapsules were studied by scanning electron microscopy and sizes were determined by laser diffraction. results indicate that all microcapsules presents adsorption isotherm of type ii and that micropores on the microcapsules surface will be very few or none. our results show that microstructure, surface area and size of microcapsules are affected by dextrin: octenylsuccinate starch proportion. pore characteristics for various microcapsules are found to be different.
Ocorrência e distribui??o espacial e temporal do coleóptero Naupactus curtus em cafeeiros de Minas Gerais, Brasil
Fernandes, Flávio Lemes;Pican?o, Marcelo Coutinho;Ramos, Rodrigo Soares;Benevenute, Jorgiane da Silva;Fernandes, Maria Elisa de Sena;
Ciência Rural , 2010, DOI: 10.1590/S0103-84782010005000093
Abstract: there were no reports of naupactus curtus in minas gerais, and the few occurrences in other brazilian states bring is little of information about its spatial distribution on coffee plants. this work aimed to report the occurrence of this potential in minas gerais and study its their spatial and temporal distribution dynamics on crops of coffea arabica. the study was conducted in coffee plants in ponte nova and jaboticatubas, with the evaluation of density being monthly. n. curtus was found in two areas in minas gerais, presenting higher densities at the edges of the crops.
Soluble receptor activator of nuclear factor κB ligand/osteoprotegerin ratio is increased in systemic lupus erythematosus patients
Diana Carmona-Fernandes, Maria Santos, Inês Perpétuo, Jo?o Fonseca, Helena Canh?o
Arthritis Research & Therapy , 2011, DOI: 10.1186/ar3500
Abstract: Our aim was to assess serum OPG and soluble RANKL (sRANKL) levels as well as sRANKL/OPG ratio in female SLE patients and compare it with female controls.We have evaluated 103 SLE patients and 114 healthy controls, all Caucasian females. All participants underwent a clinical and laboratory evaluation. sRANKL and OPG were quantified in serum by ELISA based methods. sRANKL, OPG and sRANKL/OPG ratio levels were compared between SLE patients and age, sex and race matched healthy controls. For SLE patients, a multivariate analysis was performed, to find the possible predictors of the changes in sRANKL, OPG and sRANKL/OPG ratio levels.Although sRANKL levels did not differ between the two groups, serum OPG was lower in SLE patients (P < 0.001). This led to an increased sRANKL/OPG ratio (P = 0.010) in the patients' group.The multivariate analysis was performed considering age and other clinical and laboratorial potential confounders for these variations in the SLE patients group. We have showed that age (P = 0.001) and levels of anti-Sm antibodies (P = 0.016) were independent predictors of sRANKL/OPG ratio variations in SLE patients. No relationship with therapy or disease activity measured by SLEDAI2K was found.These results are suggestive of increased osteoclastic stimuli driven by the SLE disease mechanisms.Systemic lupus erythematosus (SLE) is a chronic, multisystemic disease of unknown etiology characterized by chronic inflammation and damage to various organs and systems due to the production of autoreactive cells and antibodies [1-3].SLE patients have lower bone mineral density (BMD) when compared with healthy individuals and are at increased risk of fracture [4-7]. Although corticosteroid exposure is a major contributor to bone loss in SLE [4,5,8]. disease activity and associated co-morbidities may contribute to this process [5,8]. In addition, vitamin D deficiency is a common finding among SLE patients, further contributing to impaired bone health [5].Bone remodelin
Page 1 /143568
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.