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Search Results: 1 - 10 of 182831 matches for " Enaide Marinho de Melo Magalh?es "
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Study about Top-Down and Bottom-Up Controls in Regulating the Phytoplankton Biomass in a Eutrophic Reservoir in Northeastern Brazil  [PDF]
Juliana dos Santos Severiano, Ariadne do Nascimento Moura, Enaide Marinho de Melo Magalhes, Viviane Lúcia dos Santos Almeida
Journal of Water Resource and Protection (JWARP) , 2012, DOI: 10.4236/jwarp.2012.48071
Abstract: This study aims to analyze the effects of nutrients and predation by zooplankton on phytoplankton biomass (chlorophyll a) in a eutrophic reservoir in Brazil (Apipucos Reservoir, State of Pernambuco), through experiments in microcosms. For this, samples of water were placed in 1 L Erlenmeyer flasks and kept for seven days. Treatments included the addition of nutrients (nitrogen combined with phosphorus and isolated additions of nitrogen and phosphorus), with presence and absence of zooplankton and a control which contained the reservoir water without any manipulation. The addition of nutrients did not stimulate phytoplankton growth. However, zooplankton significantly decreased phytoplankton biomass in the treatments it was added to (p < 0.05). The results of this study showed that for the reservoir studied, predation by zooplankton is the most significant factor in the regulation of phytoplankton, contradicting several studies which show that phytoplankton biomass is more strongly controlled by nutrients (bottom-up control) than by predation (top-down control).
O uso de inibidores de apetite por mulheres: um olhar a partir da perspectiva de gênero
Melo,Cristiane Magalhes de; Oliveira,Djenane Ramalho de;
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000500022
Abstract: the scope of this study was to understand the motives that lead adult women to use appetite inhibitors and to establish, from a gender perspective, how these women relate to their own bodies. it was structured around the principles of qualitative research, and the methods of data collection were semi-structured interviews and direct observation. the informants were six women who used appetite inhibitors. the results indicated that images, publicity and social networks contribute significantly to the creation of new standards of physical appearance as well as lifestyles, which establish appearance (a slim body) and a happy marriage as the desired model. the slim body is represented as something able to alter the temperament of the individual, in other words a fat person is an unhappy person and a slim person is a happy person. the study shows that it is in the body per se that the social role destined for women is produced and reproduced.
The Establishment of Functional Play Behaviors in Children with Autism: Implications for School Inclusion  [PDF]
Daniel Carvalho de Matos, Pollianna Galv?o Soares de Matos, Creuziana Xavier de Araújo, Camila Gon?alves Ribeiro, Eliane Ribeiro Magalhes de Sousa Fortes de Melo
Creative Education (CE) , 2018, DOI: 10.4236/ce.2018.913140
Abstract: Research on evidence-based methodologies is conducted to expand skills of children with autism. Among the skills, which might be considered important for development, the literature emphasizes functional play. In many children with Autism Spectrum Disorder (ASD), the repertoire related to play is impaired and specialized treatment may address the issue by designing individualized procedures based on one-to-one interactions. Discrete trial teaching may help establishing such repertoire in a structured setting and generalization goals must be delineated to increase the likelihood with which the learned skills will emerge in new environments, such as the classroom, the home and other natural contexts. Thus, it is important that skills be shown in places where other people participate. Principles from Educational Psychology are also relevant in the advisory process to professionals related, for example, to school settings in order to favor inclusion of children with ASD to school routine and the relationship with peers. People related to these educational environments should become knowledgeable of evidence-based procedures in order to increase, with their help, generalization of previously established skills in more structured contexts. This paper assessed the efficacy of a structured intervention with functional play activities in three 4-year-old children with autism or suspect. A binder with pictures depicting actions with the components of each of four or two toy sets was used as resource to orient the target-responses of the study. Correct responses, under the control of pictures, produced access to tokens exchangeable for preferred items. Errors were corrected. Errorless performance occurred for all children with responses under the control of pictures for all and generalization with two toy sets for one. The results extended those from the previous literature and, even though the generalization to other environments such as school was not directly measured, the implications of the research to inclusion practices in the school context and development of verbal behavior were discussed.
In vitro embryo production in small ruminants
Freitas, Vicente José de Figueirêdo;Melo, Luciana Magalhes;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010001300045
Abstract: this paper reviews the technical bases of in vitro embryo production in small ruminants with special attention to the results obtained by our group in northeastern brazil. the laparoscopic oocyte recovery in hormonally treated live animals indicates a promising future for the application of this technique to genetic improvement program. new molecular biology tools should provide information to improve the efficiency of in vitro maturation. furthers efforts have to be made to improve the oocyte maturation and to standardize the semen-capacitating process.
The gravitational wave detector "Mario Schenberg": status of the project
Aguiar, O.D.;Andrade, L.A.;Camargo Filho, L.;Costa, C.A.;Araujo, J.C.N. de;Rey Neto, E.C. del;Souza, S.T. de;Fauth, A.C.;Frajuca, C.;Frossati, G.;Furtado, S.R.;Furtado, V.G.S.;Magalhes, N.S.;Marinho Jr., R.M.;Matos, E.S.;Meliani, M.T.;Melo, J.L.;Miranda, O.D.;Oliveira Jr., N.F.;Ribeiro, K.L.;Salles, K.B.M.;Stellati, C.;Velloso Jr., W.F.;
Brazilian Journal of Physics , 2002, DOI: 10.1590/S0103-97332002000500008
Abstract: the first phase of the brazilian graviton project is the construction and operation of the gravitational wave detector mario schenberg at the physics institute of the university of s?o paulo. this gravitational wave spherical antenna is planned to feature a sensitivity better than h = 10-21 hz-1/2 at the 3.0-3.4 khz bandwidth, and to work not only as a detector, but also as a testbed for the development of new technologies. here we present the status of this detector.
Tecido cerebral ectópico na órbita: relato de dois casos
Liarth, Josilene de Carvalho Soares;Magalhes, Mansueto Martins;Gon?alves, Jo?o Orlando Ribeiro;Queiroz, Joaquim Marinho de;Sampaio, Anne Leite Magalhes;
Arquivos Brasileiros de Oftalmologia , 2001, DOI: 10.1590/S0004-27492001000100013
Abstract: brain tissue in the orbit in continuation with intracranial contents is unusual. however, isolated brain tissue in orbit, is much rarer. in the present research, two cases of ectopic brain tissue in the orbit with ependymal cyst are reported. similarities with and differences between other cases reported in the literature are analyzed, as well as the difficulties of the diagnosis of their malformation. there are not many many cases of ectopic brain tissue reported in the literature.
Detection of clinically relevant yeast in blood: evaluation of methods for RNA extraction and amplification
Fátima de Melo Azevedo,Patricia Severino,Vanda Dolabela de Magalhes
Einstein (S?o Paulo) , 2004,
Abstract: Objectives: To evaluate different methods of extraction andpurification of RNA from yeast in blood samples to be used inmolecular-based diagnosis. Methods: Different combinations ofcommercially available kits were tested with blood samplesartificially inoculated with yeast cultures. Results: Qiagen kitsperformed better when compared to other commercial kits bothfor RNA extraction and one-step RT-PCR. Conclusions: Kits using ahot-start approach are better; the choice of kits has an importantimpact on the final result of a test.
The use of a novel amplification tool for molecular diagnosis of challenging samples
Fátima de Melo Azevedo,Melissa Mitne,Vanda Dolabela de Magalhes
Einstein (S?o Paulo) , 2004,
Abstract: Objective: To obtain adequate amounts of starting material to beused in molecular diagnosis. Methods: Isothermal ramificationamplification. Results: Water samples where Legionella spp wasdiluted and small amount of human DNA from HIV infected patientswere submitted to a new amplification technology (GenomiPhi kit). Those samples that were previously negative upon PCRbecame positive after the treatment. Conclusion: The newtechnology allows for molecular assays to be performed in samplesof reduced volumes or low concentration.
Assessment of spermatozoa in different age groups
Andy Petroianu,Marco Ant?nio Barreto de Melo,Luciana Magalhes de Almeida,Luiz Ronaldo Alberti
Einstein (S?o Paulo) , 2008,
Abstract: Objective: To verify sperm disorders in different age groups through analysis of seminal fluid. Methods: The semen of 80 healthy adult men, with age range of 21 to 60 years, was studied after a five-day sexual abstinence. Volunteers were distributed into four age-groups (n = 20): 21 to 30, 31 to 40, 41 to 50 and 51 to 60 years. Rresults: No differences regarding the physical and chemical aspects of semen were found (smell, color, volume, viscosity, and pH), nor were there differences related to sperm concentration and percentage of mobile forms. Therefore, a non-significant increase in spermatozoa concentration in the semen of men aged over 41 years was observed. In the 41 to 50 years-old Group, the sperm morphology was predominantly oval (p = 0.03) and there were less tapered sperm as compared to other groups (p = 0.02). Cconclusions: It was observed that there is no reduction in sperm production up to 60 years and that there is an increase in better shape for fertility, in the age of 41 to 50 years-old.
Relation between diabetes mellitus and male fertility
Andy Petroianu,Luiz Ronaldo Alberti,Marco Antonio Barreto de Melo,Luciana Magalhes de Almeida
Einstein (S?o Paulo) , 2009,
Abstract: Objective: The objective of the present study was to verify if there is any relation between diabetes mellitus and male infertility. Methods: the spermograms of 43 non-diabetic subjects and 12 diabetic patients (type 1 and 2) aged 20-60 years were compared. Spermiological findings in diabetic patients were compared with those of normal individuals of the same age. Serum testosterone, prolactin, follicle-stimulant hormone, luteinizing hormone, glucose and glycosilated hemoglobin were assayed in diabetic patients. Rresults: Six diabetic patients (four type 1 and two type 2) presented chronic complications attributed to neuropathy and vascular insufficiency. No difference was observed in the semen characteristics (odor, color, viscosity and pH) between the control group and the diabetic patients. There were no differences between seminal concentrations and percentage of motile spermatozoa during the first hour of observation in the two groups (p < 0.05). Impotence was reported by four diabetic patients (33.3%). Erectile failure was associated with diabetic microangiopathy and neuropathy. There were no controls with impotence. No significant hormonal changes were found in the diabetic patients. Cconclusions: The present results suggest that neuropathy and vascular insufficiency may be implicated in sexual dysfunction in type 1 and 2 diabetic patients, without significantly affecting the hypothalamic-pituitary-gonadal axis.
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