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Search Results: 1 - 10 of 179122 matches for " Mariane de Souza;Gontijo "
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Avalia??o da carga mental de trabalho e do desempenho de medidas de mensura??o: NASA TLX e SWAT
Cardoso, Mariane de Souza;Gontijo, Leila Amaral;
Gest?o & Produ??o , 2012, DOI: 10.1590/S0104-530X2012000400015
Abstract: this study evaluates the mental workload in some activities in an electricity generation company in santa catarina, brazil and compares the mental workload measurements obtained using two commonly used measurement methods- nasa tlx and swat. the mental workload required by both manual and automated assembly of circuit boards was evaluated. the evaluation of the mental workload showed that comparing these two types of activities, the mental requirements appear to be higher during manual assembly tasks. the methods for assessing the mental workload used in studies of ergonomics show workers' skills and limitations, characteristics of work organization, and facilitate the presentation of quantitative and qualitative results. the comparison of the performance of these two mental workload assessment methods proved a relevant investigation to the field of ergonomics since there are few comparative studies on the performance of these methods. with regard to the overall comparison of the performance of these methods, nasa tlx allows the evaluation of mental workload by analyzing several dimensions of the work situation and presents advantages when compared to swat because it can be easily implemented and showed greater acceptance by those who evaluated it
Temporalidade e espacialidade na estrutura do self nas abordagens semiótica e dialógica
Souza, Mariane Lima de;Gomes, William B.;
Psicologia em Estudo , 2009, DOI: 10.1590/S1413-73722009000200018
Abstract: the main goal of this article is to introduce to a critical account of two communicative approaches on phenomenon of self: semiotic self and dialogical self theoretical frameworks. both perspectives are analyzed separately and then compared. one argues that differences on space-temporal dimension of the self in each theory imply distinct epistemology and ontology. although both perspectives work with the sign that is the conversational (or dialogical) perception of meaning, and the functionality (or pragmatics) of expression, different assumptions concerning the culture influences set different places for both theories. the semiotic perspective turns to the phenomenon's functionality and sets a research context embedded on psychology of basic process, supported by evolutionary ontology concerned to self as meaning creator. the dialogical perspective turns to the applicability of the concept and sets an applied research context directed towards clinical psychology and supported by metaphoric and romantic ontology concerned to dialogue among self positions.
Evidência e interpreta??o em pesquisa: as rela??es entre qualidades e quantidades
Souza, Mariane Lima de;Gomes, William B.;
Psicologia em Estudo , 2003, DOI: 10.1590/S1413-73722003000200009
Abstract: this study defines and comments the concepts of given (data) and taken (capta) in empirical researches that are supported by quantities (scales, questionnaires and experiments) and qualities (descriptions and interviews). our argument is that data are essentially different from capta and that the difference is placed in the logical relations between evidence and interpretation. also, that logical relations are defined as language tropes: similarity (causality relations), metaphor (representation relations), metonymy (observable relations) and synecdoche (imaginative relations). the logical relations set a limit on contexts in which quantities and qualities work as moving parts from a whole, functioning as reversible instances. however, quantities and qualities preserve their logical specificity, which should be considered by the investigators. the exam of the communicational and logical relations between evidence and interpretation seems to be a useful resource to sustain the judgment decision in any kind of research study.
A Percep o da Brincadeira de Faz-de-conta por Crian as de uma Institui o da Educa o Infantil
Iara Feldman,Mariane Lima de Souza
Gerais : Revista Interinstitucional de Psicologia , 2011,
Abstract: This study investigated the children’s perception of children about make-believe activities in the school environment. The study included four children between five and six years of age, in the last year of child education. The children participated in two activities in the “Symbolic Game Workshop” and answered a semistructured interview in accordance with the Piagetian Clinical Method. The results suggest that the children’s perception of the make-believe activities has a problematic focus including five issues: 1) awareness that the make-believe activity is not real, 2) the exercise of the symbolic game and the rotation of roles, 3) the point of view of the others, 4) the conflict resolution, and 5) the functional pleasure and the experience of the collective symbolic activity. The conclusion is that the ludic space may be an important form of child stimulation in the school environment.
Influence of substratum surface roughness on periphytic algal community structure in a shallow tropical reservoir Influência da rugosidade do substrato sobre a estrutura da comunidade de algas perifíticas em reservatório raso tropical
Mariane Lima de Souza,Carla Ferragut
Acta Limnologica Brasiliensia , 2012,
Abstract: AIM: This study aimed to evaluate the algal periphytic community structure on substrates with differing surface roughness in early and longer-term colonization; METHODS: Periphyton was sampled after 30 days (June 24 to July 24, 2008) and 5 days (July 07 to July 12, 2010) substrate exposure during dry season. Plastic slides were used as artificial substrate. Treatments were smooth surface (control), low roughness, medium roughness and high roughness. Samples were collected for limnological condition and periphyton (chlorophyll-a, AFDM, algal biovolume and density, species richness and diversity) analysis; RESULTS: Periphytic biomass, algal density and biovolume had no significant difference among treatments after 30 and 5 days colonization time. Taxonomic similarity was the lowest among treatments and the greatest difference occurred between control and treatments with roughness surface. Bacillariophyceae biovolume decreased with increasing surface roughness. Adherence forms, algal classes and species descriptors were significantly different after 5 days colonization time, especially in medium e high roughness surface. In the colonization advanced phase only species descriptors differ among treatments. Periphytic algae with pads and stalks for adherence decreased with increasing surface roughness. CONCLUSION: Substrate physical properties had little or no influence on periphyton biomass accumulation, total density and biovolume in this study, but algal assemblages were sensitive to changes in the microtopography. More studies are needed to increase understanding of the relation substrate-periphyton in tropical ecosystems. OBJETIVOS: Este estudo visou avaliar a estrutura da comunidade de algas perifíticas em substratos com diferentes graus de rugosidade na superfície na fase inicial e avan ada da coloniza o; MéTODOS: O perifíton foi amostrado após 30 dias de coloniza o (24 junho a 24 julho/2008) e 5 dias (07-12 de julho/2010) de exposi o do substrato no período seco. Laminas de plástico foram usadas como substrato artificial. Os tratamentos foram superfície lisa (controle), baixa, média e alta rugosidade. Foram coletadas amostras para analises das variáveis físicas e químicas e do perifíton (clorofila-a, MSLC, biovolume, densidade algal, diversidade e riqueza de espécies); RESULTADOS: A biomassa, densidade e biovolume algal n o apresentaram diferen a significativa entre os tratamentos na fase inicial e avan ada da coloniza o. A similaridade na composi o de espécies entre os tratamentos foi baixa e a maior diferen a ocorreu entre controle e tratamentos
Evidência e interpreta o em pesquisa: as rela es entre qualidades e quantidades
Souza Mariane Lima de,Gomes William B.
Psicologia em Estudo , 2003,
Abstract: O estudo define e discute os conceitos de dado (data) e tomado (capta) em pesquisas cuja base empírica é constituída de quantidades (escalas, questionários, experimentos) e qualidades (descri es e entrevistas). Argumenta-se que dados s o essencialmente diferentes de tomados e que a diferen a encontra-se nas liga es lógicas entre evidência e interpreta o. As liga es lógicas s o definidas em termos de tropos de linguagem: similaridade (rela es de causalidade), metáfora (rela es de representa o) metonímia (rela es observáveis) e sinédoque (rela es imagináveis). Tais liga es delimitam contextos nos quais quantidades e qualidades funcionam como partes móveis de um mesmo todo, sendo, portanto, instancias reversíveis. Ressalte-se, contudo, que quantidades e qualidades apresentam especificidades lógicas de escolha e de julgamento que devem ser consideradas pelos pesquisadores. O exame das rela es lógicas e comunicantes entre evidência e interpreta o parece ser um recurso importante na sustenta o de julgamentos em qualquer modalidade de pesquisa.
Organic Reserves in ropical Grasses under Grazing  [PDF]
Mariane Moreno Ferro, Anderson de Moura Zanine, Daniele de Jesus Ferreira, Alexandre Lima de Souza, Luiz Juliano Valério Geron
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.614236
Abstract: Inadequate management in recent times has been considered the main factor contributing to pasture degradation. A major reason for this is related to gross errors of grazing management as a consequence of the lack of knowledge of ecophysiological limits of forage. This review aimed to approach the importance of organic reserves for grasses under grazing. Therefore, the predominant effect of animal grazing is the reduction of leaf area which impacts on carbohydrate and nitrogen reserves and consequently the growth of tillers, leaves and roots. Grass growth after defoliation is related to organic reserves and rate of photosynthesis. The latter is affected by the level of canopy light interception of and by the reminiscent leaf area index. When grazing management is carried out with respect to the physiological limits of grass growth, the rate of dry matter accumulation will be quick and constant. In this aspect, grazing management consists of seeking an efficient balance between plant growth and consumption which will reflect on animal productivity. Therefore, a balance point among frequency and intensity of defoliation must be found to achieve greater animal production concerning the ecophysiological limits of the forage plants. So the challenge will be to find a balance between frequency and intensity of grazing to achieve greater production of animals respecting the eco-physiological limits of forage plants for each forage grass individually.
Development, Validation and Characterization of Genic Microsatellite Markers in Urochloa Species  [PDF]
Juliana Santos Souza, Lucimara Chiari, Rosangela Maria Sime?o, Mariane de Mendon?a Vilela, Leonardo Rippel Salgado
American Journal of Plant Sciences (AJPS) , 2018, DOI: 10.4236/ajps.2018.92023
Abstract:

Urochloa (syn. Brachiaria) cultivars represent 85% of tropical pastures occupying 114 million hectares of cultivated grasslands in Brazil. Despite the commercial importance of the Urochloa species, low molecular information is available and is far from saturating the genome. Investigating and obtaining more markers associated to characteristics of difficult and late expression can benefit in accelerating breeding programs of more important species. Aiming to increase the number of molecular markers, genic microsatellite markers were obtained from transcriptome of U. decumbens and analyzed for their cross-amplification to U. brizantha, U. humidicola and U. ruziziensis. Genic microsatellite markers were isolated from a transcriptome obtained of U. decumbens Basiliskroots. Specific primers were designed for one hundred loci, and 32 were polymorphic presenting polymorphism informative content values ranging of 0.12 to 0.81 (mean 0.54). Amplified microsatellite regions yield an average of 4.44 alleles per locus (ranging of 1 to 13). Cross-amplification to U. brizantha, U. humidicola and U. ruziziensis

Purple Grape Juice, an Important Flavonoids Source, Influence in Biochemical Parameters in Offspring of Wistar Rats  [PDF]
Daniele Karina Hilger, Mariane Farias Wohlenberg, Thays Krischke Schaffer, Fernanda de Souza Machado, Luciana Kneib Gon?alves, Gabrielli Bortolato, Gabriele Dani, Adriana Rodrigues, Cláudia Funchal, Caroline Dani
Food and Nutrition Sciences (FNS) , 2015, DOI: 10.4236/fns.2015.67071
Abstract: Our objective was to evaluate the effect of chronic gestational treatment and post-breast feeding with purple grape juice on the biochemical parameters in offspring of dams. We used 40 male offspring from 14 Wistar rats which received purple grape juice or water by gavage daily for 42 days at a dose of 7 microliters/g. The offspring were divided into groups of water or juice. All received daily purple grape juice or water by gavage for 30 days after completion of their nursing period at a dose of 7 microliters/g. At the end of the treatment period, the offspring were euthanized by decapitation with its truncal blood collected and subsequently separated the serum from the blood. The measurements were performed by automation or by manual dosing. Considering the gestational factor, grape juice was able to reduce levels of total cholesterol, triglycerides, urea, alanine aminotransferase (ALT), and not alter the levels of creatinine and aspartate aminotransferase (AST) in serum of the offspring. When considering the post-breast feeding factor, grape juice resulted in an improvement in HDL-C. We concluded that purple grape juice was able to produce a beneficial effect on certain biochemical parameters in offspring.
Spatial patterns of preconsolidation pressure and soil moisture along transects in two directions under coffee
Gontijo, Ivoney;Souza Dias Junior, Moacir de;Guimar?es, Paulo Tácito Gontijo;Oliveira, Marcelo Silva de;Ajayi, Ayodele Ebenezer;
Revista Brasileira de Ciência do Solo , 2011, DOI: 10.1590/S0100-06832011000400012
Abstract: information on the spatial structure of soil physical and structural properties is needed to evaluate the soil quality. the purpose of this study was to investigate the spatial behavior of preconsolidation pressure and soil moisture in six transects, three selected along and three across coffee rows, at three different sites under different tillage management systems. the study was carried out on a farm, in patrocinio, state of minas gerais, in the southeast of brazil (18 o 59 ' 15 '' s; 46 o 56 ' 47 '' w; 934 m asl). the soil type is a typic dystrophic red latosol (acrustox) and consists of 780 g kg-1 clay; 110 g kg-1 silt and 110 g kg-1 sand, with an average slope of 3 %. undisturbed soil cores were sampled at a depth of 0.10-0.13 m, at three different points within the coffee plantation: (a) from under the wheel track, where equipment used in farm operations passes; (b) in - between tracks and (c) under the coffee canopy. six linear transects were established in the experimental area: three transects along and three across the coffee rows. this way, 161 samples were collected in the transect across the coffee rows, from the three locations, while 117 samples were collected in the direction along the row. the shortest sampling distance in the transect across the row was 4 m, and 0.5 m for the transect along the row. no clear patterns of the preconsolidation pressure values were observed in the 200 m transect. the results of the semivariograms for both variables indicated a high nugget value and short range for the studied parameters of all transects. a cyclic pattern of the parameters was observed for the across-rows transect. an inverse relationship between preconsolidation pressure and soil moisture was clearly observed in the samples from under the track, in both directions.
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