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Search Results: 1 - 10 of 91343 matches for " Ariana Michelle Ferreira da Silva "
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O ensino/aprendizagem da língua espanhola e a rede social Livemocha
Ariana Michelle Ferreira da Silva
Revista Letrando , 2012,
Abstract: A inser o das Novas tecnologias de informa o e comunica o – NTIC’s, na escola, contribuem quanto ao acesso às informa es e privilegia a constru o do conhecimento, a comunica o e uma maior intera o. Este artigo tem como tema: O ensino/aprendizagem da língua espanhola e a rede social Livemocha, visando um estudo quanto às vantagens e desafios enfrentados pelos professores que utilizam o computador em seu contexto escolar. Nesse sentido, o foco desse estudo busca refletir as potencialidades do uso das TIC’s no ensino da língua espanhola e às contribui es da rede social de ensino Livemocha, no ambito educacional.
Esterois como indicadores do acúmulo de esgotos domésticos em sedimentos de um sistema estuarino-lagunar tropical (Mundaú-Manguaba, AL)
Araujo, Michelle Passos;Costa, Talitha Lopes Ferreira da;Carreira, Renato da Silva;
Química Nova , 2011, DOI: 10.1590/S0100-40422011000100013
Abstract: the history of sewage contamination in the mundaú-manguaba estuarine lagoon system (ne brazilian coastal zone) was evaluated through the concentration of sterols in sediment cores. the concentration of coprostanol increased towards the surface sediments, with the maximum of 5.65 μg g-1 at 0-2 cm sediment layer in mundaú. manguaba exhibited a lower level of contamination. the ratio cholestanol/cholesterol suggested degradation of coprostanol only before the burial of organic matter in the sediment. this feature, together with information of population growth in the watershed, allowed the estimation of a sedimentation rate of 0.90 cm year-1 to the mundaú lagoon.
Nurse’s role who works in bone transplant
Ana Rachel Ferreira Ribeiro, Michelle de Oliveira Menezes da Concei??o, Michelle de Mendon?a Silva, Heliane Lopardi
Revista de Enfermagem UFPE On Line , 2009,
Abstract: Objective: to describe the role of a nurse before the transplant bone involving the donor’s family. Methods: descriptive study, based on data from Latin American and Caribbean in Health Sciences and Nursing Database, for the past nine years. It was carried through the pre-reading and selective reading having as resulted seven references. We done interpretative reading and finally analyze, clarify the role of the nurse who works in front of the bone transplant the donor's family. Results: the nurse’s performance goes very beyond the CIDOT, that is, beyond intra-hospital environment. The nurse has that to obtain to reach the community sensitizing it, gaining their confidence and showing him how is nobleman and important the act to communicate its family while still alive the desire of being a giver. Conclusion: the Law n° 9.434, 1997 of to the nurse the qualification and autonomy to act all actively in the process of bone transplant, it is enough then, to have the knowledge and will to pass of a spectator and collaborator, the professional with disposition to improve and help all the involved ones in this procedures.
Características físicas de frutos e amêndoas e características químico-nutricionais de amêndoas de acessos de sapucaia
Souza, Valdomiro Aurélio Barbosa de;Carvalho, Michelle Garcêz de;Santos, Kleber Silva;Ferreira, Clemilton da Silva;
Revista Brasileira de Fruticultura , 2008, DOI: 10.1590/S0100-29452008000400018
Abstract: the objective of this work was to evaluate fruit and almond physical characteristics and almond chemical-nutritional characteristics of sapucaia accesses. fruits were harvested at the stage of pre-ripening and kept at environment temperature for about a week to complete the ripening. the following physical and chemical-nutritional characteristics were analyzed: fruit mean weight, fruit longitudinal diameter, fruit equatorial diameter, fruit longitudinal diameter/fruit equatorial diameter ratio, cover diameter, almond mean weight, almond length, almond diameter, almond length/diameter ratio, almond number/fruit; fat, brute protein, asher and minerals. the data was submitted to the variance analysis and access means compared by the scott-knott test at 5%. there were statistical differences among accesses for all the analyzed characteristics, except for fat and brute protein. it was observed a great phenotypic variability in the analyzed germplasm, indicating that this variability may serve as a baseline for future works on genetic improvement.
The Use of HRP in Decolorization of Reactive Dyes and Toxicological Evaluation of Their Products
Michelle Reis da Silva,Lívian Ribeiro Vasconcelos de Sá,Carlos Russo,Elita Scio,Viridiana Santana Ferreira-Leit?o
Enzyme Research , 2010, DOI: 10.4061/2010/703824
Abstract: This work studied the potential use of horseradish peroxidase (HRP) in the decolorization of the following textile dyes: Drimarene Blue X-3LR (DMBLR), Drimarene Blue X-BLN (DMBBLN), Drimarene Rubinol X-3LR (DMR), and Drimarene Blue CL-R (RBBR). Dyes were individually tested in the reaction media containing 120?mg·L-1, considering the following parameters: temperature (20–45°C), H2O2 concentration (0–4.44?mmol·L-1), and reaction time (5 minutes, 1 and 24?h). The following conditions: 35°C, 0.55?mmol·L-1, and 1h, provided the best set of results of color removal for DMBLR (99%), DMBBLN (77%), DMR (94%), and RBBR (97%). It should be mentioned that only 5 minutes of reaction was enough to obtain 96% of decolorization for DMBLR and RBBR. After the decolorization reactions of DMBLR, DMR, and RBBR, it was possible to observe the reduction of Artemia salina mortality and the no significant increase in toxicity for the products generated from DMBBLN. 1. Introduction The textile industry is a large consumer of energy and potable water, mainly after dyeing in the washing procedures. During industrial processing, up to 40% of the used dyestuffs are released in the effluent. Considering the high discharged volumes and their composition, wastewater from textile industries can be considered as one of the most polluting in all industrial sectors, thus requiring appropriate treatment technologies [1]. The removal of color from effluent is one of the major problems that the textile industry faces. The presence of color hinders the absorption of solar radiation, thus reducing the natural photosynthetic activity, causing changes in aquatic biota. Moreover, many of these dyes present acute or chronic toxicity on the ecosystems [2]. When compared to natural dyes, reactive dyes are extensively used in the textile industry due to their easy use, cost effectiveness in synthesis, stability, variety of colors, and better dyeing processing conditions [3–5]. On the other hand, many synthetic dyes are resistant to biological degradation due to the presence of large content of aromatic structure, complex molecules, and synthetic origin; thus, the decolorization of textile dye effluent does not occur when treated in conventional effluent treatment systems [3, 6, 7]. Different techniques of color removal have been studied, such as adsorption, precipitation, oxidation, coagulation-flocculation, chemical degradation and photodegradation. These methods have different color removal capabilities and capital costs. Coagulation and adsorption are the most commonly used but generate large
Effects of Pterocaulon polystachyum DC. (Asteraceae) on onion (Allium cepa) root-tip cells
Knoll, Michelle Frainer;Silva, Antonio Carlos Ferreira da;Canto-Dorow, Thais Scotti do;Tedesco, Solange Bosio;
Genetics and Molecular Biology , 2006, DOI: 10.1590/S1415-47572006000300024
Abstract: in brazil leaf infusions of the plant pterocaulon polystachyum dc (asteraceae) are used to treat digestive problems. we used plants from six p. polystachyum populations to prepare fresh aqueous leaf infusions at the concentration normally used in brazil (2.5 g l-1) and at twice (5 g l-1) and four times (10 g l-1) this concentration. we rooted onion bulbs in a water control or one of the infusions for 24 h and used the in vivo onion (allium cepa) root-tip cell test to investigate the potential mutagenicity of the infusions by calculating the mitotic index for the control and the experimental treatments and comparing them using the chi-squared test (c2, p = 0.05). there was a highly significant decrease in the mitotic index of root-tip cells treated with infusion as compared to those exposed to water only. these results indicate that p. polystachyum infusions present cytotoxic and anti-proliferative activity and therefore have therapeutic potential.
Synthetic 1,4-Pyran Naphthoquinones Are Potent Inhibitors of Dengue Virus Replication
Emmerson C. B. da Costa, Raquel Amorim, Fernando C. da Silva, David R. Rocha, Michelle P. Papa, Luciana B. de Arruda, Ronaldo Mohana-Borges, Vitor F. Ferreira, Amilcar Tanuri, Luciana J. da Costa, Sabrina B. Ferreira
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0082504
Abstract: Dengue virus infection is a serious public health problem in endemic areas of the world where 2.5 billion people live. Clinical manifestations of the Dengue infection range from a mild fever to fatal cases of hemorrhagic fever. Although being the most rapidly spreading mosquito-borne viral infection in the world, until now no strategies are available for effective prevention or control of Dengue infection. In this scenario, the development of compounds that specifically inhibit viral replication with minimal effects to the human hosts will have a substantial effect in minimizing the symptoms of the disease and help to prevent viral transmission in the affected population. The aim of this study was to screen compounds with potential activity against dengue virus from a library of synthetic naphthoquinones. Several 1,2- and 1,4-pyran naphthoquinones were synthesized by a three-component reaction of lawsone, aldehyde (formaldehyde or arylaldehydes) and different dienophiles adequately substituted. These compounds were tested for the ability to inhibit the ATPase activity of the viral NS3 enzyme in in vitro assays and the replication of dengue virus in cultured cells. We have identified two 1,4-pyran naphthoquinones, which inhibited dengue virus replication in mammal cells by 99.0% and three others that reduced the dengue virus ATPase activity of NS3 by two-fold in in vitro assays.
Cooperativismo: uma experiência feminina na arte de produzir conquistas
Lima, Michelle da Silva;
Revista Estudos Feministas , 2012, DOI: 10.1590/S0104-026X2012000100012
Abstract: in this paper i seek to examine ways of women mobilization in a working class housing cooperative. the cooperative under study had financial and technical support from an ngo, which helped to organize it through family workforce for self-construction. the cooperative proposed as a new form of political and economic organization of society invests in the power of collective articulation accumulated in the history of the working classes. when updating important socio-cultural principles, like the spirit of solidarity and articulation of the sociability network, the women members began to participate in traditionally masculine tasks and to exercise a subtle and creative leadership, giving a specific sense of collectiveness to the group of families.
Fra??es da matéria organica do solo após três décadas de cultivo de eucalipto no Vale do Rio Doce-MG
Lima, Augusto Miguel Nascimento;Silva, Ivo Ribeiro da;Neves, Júlio César Lima;Novais, Roberto Ferreira de;Barros, Nairam Félix de;Mendon?a, Eduardo de Sá;Demolinari, Michelle de Sales Moreira;Leite, Fernando Palha;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000300014
Abstract: little is known about the changes in different soil organic matter (som) fractions under short-rotation eucalypt plantations. this study aimed to evaluate the impact of eucalypt cultivation on c stocks of several organic matter fractions in soils previously covered with degraded pasture, as well as to identify which som fractions are more sensitive indicators of land use change impacts. the study was conducted at two sites (belo oriente and virginópolis) with commercial short-rotation eucalypt plantations in the rio doce valley region, minas gerais state, brazil. the soil samples were analyzed for: total organic c (toc), light fraction c (free light - fll and occluded light- flo), c associated to heavy fractions (sand - ar, silt + clay - s+a and clay - arg), microbial biomass c (bm) and humic fractions c (fulvic acids- faf; humic acid- fah and humin- fh). results indicate that overall organic c stockst in all som fractions were higher in soils of virginópolis than those of belo oriente due to the lower annual mean temperature and higher clay content. thus, soil c sequestration by eucalypt plantations was higher in virginópolis (14.2 t ha-1) than in belo oriente (10.0 t ha-1), resulting in a c sequestration rate of 0.42 t ha-1 yr-1 and 0.29 t ha-1 yr-1 , respectively. in belo oriente the eucalypt plantations also favored the increase in c stocks of the arg, s + a and fh fractions. a similar pattern was observed for c of fll, faf and fah in virginópolis. of all som fractions, the bm and the flo were the least sensitive indicators of alterations in som three decades after land use changes. in this regard, toc and c of fll, faf, fah and fh were more efficient.
Mulheres obesas de baixa estatura e seus filhos desnutridos
Ferreira, Haroldo da Silva;
Estudos Avan?ados , 2006, DOI: 10.1590/S0103-40142006000300017
Abstract: a synthesis of the studies on nutrition and health developed by the group led by the author, wrapping urbane and rural populations of the state of alagoas (brazil). is outlined the high prevalence of height-for-age deficit between the children, indicative of chronic undernutrition, and the accented frequency of obesity in the adult population, specially between the women. these data, allied to studies of food consumption, and biochemical inquiries and of morbidity, corroborate the theory of which the malnutrition in the beginning of the life increases the sensitivity to the chronic diseases in the adult age.
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