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Search Results: 1 - 10 of 195311 matches for " Amanda de Oliveira Ferreira "
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Redefinition of the role of schools and teachers in contemporary society A redefini o do papel da escola e do professor na sociedade atual
Amanda de Oliveira Ferreira,Maycon Jefferson José de Souza
Vértices , 2010,
Abstract: Due to changes caused by the new information and communications technologies in present society, teachers are facing another challenge: to understand how these changes affect education and modify their role in the classroom. This article aims to show changes in society as a result of the new technologies and how they modify the role of schools and teachers, emphasizing that this challenge requires teachers to admit the existence of a new society built after the rise of new technologies. Diante das mudan as provocadas pelas novas tecnologias da informa o e da comunica o, na sociedade atual, os professores encontram-se frente a mais um desafio: entender como estas mudan as afetam a escola e modificam seu papel na sala de aula. Este artigo pretende apontar as mudan as ocorridas na sociedade em decorrência das novas tecnologias e como elas modificam a fun o da escola e do professor na sociedade, sempre ressaltando que esse desafio requer primeiramente dos docentes admitir a existência da nova sociedade construída após a chegada das inova es tecnológicas.
Ciclagem e balan?o de potássio e produtividade de soja na integra??o lavoura-pecuária sob semeadura direta
Ferreira, Eric Victor de Oliveira;Anghinoni, Ibanor;Andrighetti, Marcelo Hoerbe;Martins, Amanda Posselt;Carvalho, Paulo César de Faccio;
Revista Brasileira de Ciência do Solo , 2011, DOI: 10.1590/S0100-06832011000100015
Abstract: nutrient cycling and balance in integrated crop-livestock systems (icl) are processes that involves soil, plant and animal components, beyond fertilization. animal management, by modifying soil biotic and abiotic conditions, also influences this process as it affects the residue decomposition rate. the objective was to evaluate potassium (k) cycling and balance in an icl system with grazing (black oat and ryegrass) intensities in the winter, followed by soybean cultivated in the summer. the experiment was conducted as of may of 2001 in an area in the state of rio grande do sul - brazil, on a rhodic hapludox (oxisol), under no tillage since 1991. the treatments consisted of continuous bovine grazing intensities at a pasture height of 10, 20, 30 and 40 cm, and a control (no-grazing), in a randomized block design, with three replicates. the forage/soybean cycle of 2007/08 was evaluated in this paper. to calculate k cycling, the contents accumulated in pasture, soybean and animals in one pasture-soybean cycle were considered, and the balance, "in the field" and "in the soil", of k inputs (fertilizer) and outputs (soybean grains and animal tissue) and the k remaining in plant and soil, respectively, were calculated. potassium cycling increased with increasing grazing intensity and the balance, despite negative, with a higher deficit in areas with higher grazing intensity, did not influence soybean yield.
Metodologias de inocula??o de Rhizoctonia solani na cultura da cenoura
Oliveira, Amanda Cabral Corrêa de;Souza, Paulo Estev?o de;Pozza, Edson Ampélio;Manerba, Felipe de Carvalho;Lopes, Maurício Ferreira;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000300044
Abstract: rhizoctonia solani may cause different diseases in carrot (daucus carota l.). to test control methods, artificial inoculation is generally employed. this work aimed to adjust a methodology to inoculate r. solani (ag-4) in carrot. a randomized block outline with five replicates was used, with an experimental unit of a 3l-pot with 40 seeds and a substact composed by a mixture of soil/sand (3:1 v/v). treatments were those in a factorial experiment 4 x 3, with 4 inoculum densities (9; 18; 36; 72 mg of inoculum.kg-1 of soil) and three forms of artificial infestation (incorporated to the substract as a whole; incorporated on the surface; with direct contact with seeds) and an additional control. the experiment was carried out in a growth chamber at 200c and a 12h photoperiod. the evaluations were daily performed from the 8th to the 30th day after sowing, recording plant stand and number of seedlings with damping-off. the emergence index, averge percentage of pre and post emergence. were analyzed the density of 72 mg of inoculum·kg-1 of soil, incorporated on the surface of the susbtract was the most efficient inoculation method.
Express?o do complexo de histocompatilidade principal de classe I (MHC I) no sistema nervoso central: plasticidade sináptica e regenera??o
Zanon, Renata Graciele;Emirandetti, Amanda;Sim?es, Gustavo Ferreira;Freria, Camila Marques;Victório, Sheila Cristina;Cartarozzi, Luciana Politti;Barbizan, Roberta;Oliveira, Alexandre Leite Rodrigues de;
Coluna/Columna , 2010, DOI: 10.1590/S1808-18512010000200017
Abstract: it has been recently demonstrated that the major histocompatibility complex of class i (mhc i) expressed in the central nervous system (cns) does not only function as a molecule of the immune system, but also plays a role in the synaptic plasticity. the expression of mhc i influences the intensity and selectivity of elimination of synapses apposed to neurons that were subjected to lesion, besides influencing the reactivity of neighboring glial cells. mhc i expression and the degree of synaptic rearrangement and glial response after injury correlate with differences in the regenerative potential and functional recovery of isogenic mice strains. in this way, the new aspects regarding mhc i functions in the cns may guide further studies aiming at searching the involvement of mch i in neurologic disorders, as well as the development of new therapeutic strategies.
Fun??o diastólica do ventrículo esquerdo em obesos graves em pré-operatório para cirurgia bariátrica
Tavares, Irlaneide da Silva;Sousa, Antonio Carlos Sobral;Menezes Filho, Raimundo Sotero;Aguiar-Oliveira, Manuel Hermínio de;Barreto-Filho, José Augusto;Brito, Amanda Ferreira de;Oliveira, Joselina Luzia Menezes;
Arquivos Brasileiros de Cardiologia , 2012, DOI: 10.1590/S0066-782X2012005000028
Abstract: background: obesity is a chronic and multifactorial disease, associated with increased cardiovascular risk, especially diastolic heart failure. objective: to evaluate left ventricular diastolic function in morbidly obese patients in the pre-operative for bariatric surgery, correlating it with cardiovascular risk factors and heart structure. methods: this is a cross-sectional study with 132 patients eligible for bariatric surgery submitted to transthoracic echocardiography assessment and of cardiovascular risk factors, as follows: 97 women (73.5%), mean age 38.5 ± 10.5 years and bmi of 43.7 ± 7.2 kg / m2. patients were divided into three groups: 61 with normal diastolic function, 24 with mild diastolic dysfunction and 47 with moderate/severe diastolic dysfunction, of which 41 with moderate diastolic dysfunction (pseudonormal pattern) and six with severe diastolic dysfunction (restrictive pattern). results: hypertension, age and gender were different in the groups with diastolic dysfunction. groups with dysfunction had higher left atrial diameter, left ventricular diameter, left atrial volume in four and two chambers, left atrial volume index and left ventricular mass index corrected for body surface area and height. conclusion: the high frequency of left ventricular diastolic dysfunction in the preclinical phase in morbidly obese patients justifies the need for careful echocardiographic assessment, aiming at identifying individuals at higher risk, so that early intervention measures can be carried out.
Soil aggregation in a crop-livestock integration system under no-tillage
Souza, Edicarlos Damacena de;Costa, Sérgio Ely Valad?o Gigante de Andrade;Anghinoni, Ibanor;Carvalho, Paulo César de Faccio;Oliveira, Eric Victor Ferreira de;Martins, Amanda Posselt;Cao, Eduardo;Andrighetti, Marcelo;
Revista Brasileira de Ciência do Solo , 2010, DOI: 10.1590/S0100-06832010000400033
Abstract: grazing intensities can influence soil aggregation, which can be temporarily and permanently affected. the objective of this study was to evaluate the aggregate stability in water at the end of a soybean cycle and during pasture development in a crop-livestock integration system under no-tillage and grazing intensities. the experiment was initiated in 2001, in a dystrophic red latosol, after soybean harvest. treatments consisted of pasture (black oat + italian ryegrass) at heights of 10, 20 and 40 cm, grazed by young cattle, and a control (no grazing), followed by soybean cultivation, in a randomized block design. soil samples were collected at the end of the soybean cycle (may/2007), during animal grazing (september/2007) and at the end of the grazing cycle (november/2007). the grazing period influences aggregate distribution, since in the september sampling (0-5 cm layer), there was a higher proportion of aggregates > 4.76 mm at all grazing intensities. soil aggregation is higher in no-tillage crop-livestock integration systems in grazed than in ungrazed areas.
Public Knowledge about and Detection of Canine Visceral Leishmaniasis in Urban Divinópolis, Brazil
Carina Margonari,Júlia Alves Menezes,Marcele Neves Rocha,Kamila Nunes Maia,Michael éder de Oliveira,Amanda Luisa Fonseca,Fabrizio Furtado de Sousa,Eduardo de Castro Ferreira,Ana Paula Madureira,Maria Norma Melo,Rodrigo Pedro Soares
Journal of Tropical Medicine , 2012, DOI: 10.1155/2012/429586
Abstract: Background. Leishmaniases are diseases with a wide spectrum of clinical manifestations including cutaneous (CL) and visceral (VL) forms. Many factors may affect their occurrence and expansion including environmental, geographic, and social conditions. In the past two decades, Divinópolis, Minas Gerais State, Brazil, has exhibited the potential for a disease outbreak, with the appearance of CL, and VL cases (human and canine). Hence, this study was initiated to monitor public knowledge of the disease. Questionnaires were administered in four neighborhoods (Jardim Belvedere, Esplanada, Danilo Passos I and II) where most of the human and canine cases have been reported. The analyses demonstrated that public knowledge of the disease is sparse and fragmented. A strong perception of the dog as the main reservoir was observed. Five veterinary clinics were evaluated for the presence of canine VL using serological (RIFI and ELISA) and molecular (PCR-RFLP) techniques. This is the first study demonstrating the occurrence of Leishmania infantum in Divinópolis, suggesting a possible urbanization of VL. 1. Introduction Leishmaniases are a group of diseases caused by the protozoan Leishmania (Kinetoplastida: Trypanosomatidae) affecting 12 million people in 88 countries. The disease exhibits a wide spectrum of clinical manifestations ranging from benign cutaneous lesions (CL) to the fatal visceral form (VL) [1]. In Latin America, especially Brazil, both forms are widely distributed and are transmitted by the bite of phlebotomine sand flies (Diptera: Psychodidae) [2]. Wild and domestic reservoirs including foxes, marsupials, rodents, dogs, and cats are the main sources of sand fly infection [3–8]. Many factors may have contributed to VL and CL expansion and urbanization [9], including deforestation [10], human migration [11], vector adaptation [12, 13], drug resistance [14], poverty [15], and social conflicts [16]. As a result of anthropic modifications, VL has been increasingly reported in urban areas of major Brazilian cities including Natal, Teresina, Sobral, and Belo Horizonte [5, 17–20]. The city of Divinópolis, Minas Gerais State, Brazil, has a population of approximately 210,000. It has grown dramatically, with 90.5% of its territory completely urbanized in 2000 [21]. During the 1990s, 135 CL cases were detected by health authorities. Most of those cases were reported in the neighborhoods of Jardim Belvedere, Esplanada, S?o José, Catal?o, and Candelária, all in the vicinity of Mata do Noé forest, where a large area was deforested. More recently, another forest
The activity of a metronidazole analogue and its β-cyclodextrin complex against Trypanosoma cruzi
Lopes, Marcela Silva;Sales Júnior, Policarpo Ademar;Lopes, Amanda Gervásio Ferreira;Yoshida, Maria Irene;Silva, Thais Horta Alvares da;Romanha, Alvaro José;Alves, Ricardo José;Oliveira, Renata Barbosa de;
Memórias do Instituto Oswaldo Cruz , 2011, DOI: 10.1590/S0074-02762011000800027
Abstract: in this study we prepared an inclusion complex between an iodide analogue of metronidazole (mtz-i) and cyclodextrin (cd) to develop a safer and more effective method of treating trypanosoma cruzi infections. according to our results, mtz-i and mtz-i:β-cd were 10 times more active than mtz, demonstrating that the presence of an iodine atom on the side chain increased the trypanocidal activity while maintaining its cytotoxicity. the selective index shows that mtz-i was 10 times more active against t. cruzi than it was against mammalian cells. the modification of mtz side chains provides a promising avenue for the development of new drugs.
Educa??o social de rua: bases históricas, políticas e pedagógicas
Oliveira, Walter Ferreira de;
História, Ciências, Saúde-Manguinhos , 2007, DOI: 10.1590/S0104-59702007000100007
Abstract: this work is about street social education as a pedagogical system that started in latin america in the late 1970s, as the street population formed mostly by children and adolescents called for attention. the first street social educators were 'pastoral' agents working at the pra?a da sé, a place with large numbers of street children in s?o paulo. based on the liberation theology and on the pedagogies developed by paulo freire, celestine freinet, anton makarenko, and emília ferreiro, the street educators developed a conceptual field and participated in the promulgation of the 1988 federal constitution, particularly by writing and introducing the 'estatuto da crian?a e do adolescente' (the 'child and adolescent statute'). street social education is currently latent and suffering the consequences of program discontinuity caused by successive changes of government. it is, therefore important to know the conceptual proposals.
Um estudo exploratório sobre a homogeneidade do crescimento das empresas brasileiras no período 1995 - 2003
Oliveira, Edson Ferreira de;
Revista de Administra??o Contemporanea , 2007, DOI: 10.1590/S1415-65552007000200008
Abstract: the central point of the study is the measurement of brazilian firms' growth homogeneity level in the last decade, from january/1995 to december/2003. the measure is carried out based on mathematical model which adapts the cluster theory to the correlations between operational returns of brazilian firms belonging to various economics activity branches. non-financial firms, chosen for the study, try to represent, by their diversity, the brazilian economy in spite of the data collection natural restrictions presented by consolidated information systems. as far as the model is concerned, the results obtained show that the brazilian firms reached a low level of growth homogeneity in the analyzed period, suggesting that brazilian economy growth is a heterogeneous process, possibly associated to regional disequilibrium of a continental size country.
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