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Sugarcane cultivation stands out in Brazilian agribusiness, covering more than eight million hectares for the production of sugar, ethanol, and by-products. Fertilization is one of the limiting factors in sugarcane yield, for which filter cake is a viable solution to meet plant nutritional needs. This study aimed to assess the effect of enriched filter cake on gas exchange and yield in RB041443 sugarcane, cultivated in soils of the coastal tablelands of Paraíba, Brazil. The experiment was conducted in the Monte Alegre S/A sugarcane mill, in the municipality of Mamanguape, using a randomized blocks experimental design, with 12 treatments (T1- cake, T2- cake + MAP, T3- cake + gypsum, T4 - cake + phosphate, T5- cake + bagasse, T6- cake + MAP + gypsum, T7- cake + MAP + phosphate, T8- cake + MAP + bagasse, T9- cake + gypsum + phosphate, T10- cake + gypsum + bagasse, T11- cake + phosphate + bagasse, and T12- control (only MAP)), and 4 replications, totaling 48 plots. A significant effect (5% probability) was also observed for the variables number of leaves and tons of stem per hectare (TSH). T1- cake, T4- cake + phosphate, T6- cake + MAP + gypsum and T10- cake + gypsum + bagasse, had the best results for TSH, with yields greater than 140 t ha-1. Regarding stomatal conductance, the highest values were obtained in T6 and T8, which, together with T11, had the highest gs values. Concerning the internal carbon concentration, T1, T2, T6, and T8 stood out. T6 also had a significant effect on transpiration. From this study, it was concluded that the use of enriched filter cake as a base fertilizer in sugarcane culture contributes to increasing the yield of the RB041443 variety, generating positive responses for plant gas exchange, being T1 and T10 indicated to increase the production in the sugar-energy sector. Resumo A cultura da cana-de-açúcar ocupa uma posição de destaque para o agronegócio brasileiro, abrangendo mais de oito milhões de hectares na produção de açúcar, etanol e subprodutos. Um dos fatores limitantes na produtividade da cana-de-açúcar é a questão da adubação, sendo a torta de filtro uma solução viável para suprir as necessidades nutricionais da planta. Com esse estudo, objetivou-se avaliar o efeito do uso da torta de filtro enriquecida sob as trocas gasosas e produtividade da variedade de cana-de-açúcar RB041443 cultivada em solos dos tabuleiros costeiros da Paraíba. O experimento foi conduzido na Usina Monte Alegre S/A, no município de Mamanguape-PB, utilizando o delineamento experimental em blocos casualizados com 12 tratamentos (T1- Torta, T2- Torta + MAP, T3- Torta + Gesso, T4 - Torta + Fosfato, T5- Torta + Bagaço, T6- Torta + MAP + Gesso, T7- Torta + MAP + Fosfato, T8- Torta + MAP + Bagaço, T9- Torta + Gesso + Fosfato, T10- Torta + Gesso + Bagaço, T11 - Torta + Fosfato + Bagaço, e T12 - Testemunha (Apenas MAP)), 4 repetições, totalizando 48 parcelas. Efeito significativo a 5% também foi observado para a variável número de folhas e tonelada de colmo por hectare. Para a variável TCH, os melhores resultados foram obtidos nos tratamentos T1- Torta, T4-Torta + Fosfato, T6- Torta + MAP + Gesso e T10- Torta + Gesso + Bagaço, com produtividades superiores a 140 t ha-1. Para a condutância estomática, resultados superiores foram obtidos no T6 e T8, que, junto ao T11, agruparam-se com os maiores valores de gs. Em relação a concentração interna de carbono, destacaram-se os tratamentos T1, T2, T6 e T8. Para a variável transpiração, o T6 apresentou influência significativa da torta de filtro. Com o referido estudo, concluiu-se que a utilização da torta de filtro enriquecida como adubação de fundação na cultura da cana-de-açúcar possibilita aumento no rendimento produtivo da variedade RB 041443, bem como respostas positivas para as trocas gasosas da planta, sendo os tratamentos T1 e T10 indicados para aumentar a produção do setor sucroenergético.

Phosphorus is the most limited nutrient in Brazilian soils for plant growth, resulted of low availability and poor P content in bedrock. The aim of the study was to evaluate the dynamic of P fractions in a sand soil typical Quartzipsamment cropped with common bean under the effects of P and Si-fertilizer rates. The research was carried out in a soil with sand texture and clay mineralogy constituted mainly by kaolinite, classified as Neossolo Quartzarênico Órtico típico (RQo). The greenhouse location was the campus of Universidade Federal de Lavras located in the city of Lavras, state of Minas Gerais, Brazil (approximately 21°13′46.54″ S and 44°58′26.30″ W, average altitude 932 m above sea level). The experimental design used was entirely random, arranged in a 4 × 3 factorial design, with four repetitions, with amount of 48 experimental units. The treatments included four P rates (0, 80, 240 and 410 mg dm-3) and four Si rates (0, 240 and 410 mg dm-3). Phosphorus fractions in soil are little affected by Si-fertilizer rates. P uptakes by bean plants are correlated to the labile and moderately labile fractions. P-fertilizer rates increment majority the stable P fraction in soil and in lower proportion the labile and moderately labile P fractions in soil. Po-NaHCO3 is the only that contributes to bean plant nutrition. Made available in DSpace on 2018-12-27T23:38:08Z (GMT). No. of bitstreams: 1 DynamicofPphosphorusfractions.pdf: 280240 bytes, checksum: 46fd1de1d0d0e6ac294f84555e0be780 (MD5) Previous issue date: 2018-12-27

This study investigates whether entrepreneurship (operationalized as self-employment status) is related to higher levels of meaningfulness at work and individual’s well-being, specifically subjective vitality, when compared to regular employment. We propose that the impact of self-employment on meaningfulness at work would depend on countries’ normative context, namely on the national entrepreneurship prescriptive norm. We analysed 2010’s data from the Global Entrepreneurship Monitor and the European Social Survey on 16 European countries and tested a cross-level moderated mediation model. Results showed that entrepreneurship is positively related to individual’s well-being through the mediating effect of meaningfulness at work. However, the effect of entrepreneurship on individuals’ meaningfulness at work and, ultimately, on their subjective vitality, is stronger for people living in countries with less favorable national entrepreneurship norm. These findings provide evidence for framing meaningfulness at work as being contingent on the interaction between self-employment and national normative context and contribute to the literatures on entrepreneurship, meaningfulness, and well-being at work info:eu-repo/semantics/acceptedVersion

We analyze the effects of the program Cognitive Entrepreneurial Training in Opportunity Recognition on the accurate assessment of prototypical viability of business opportunities. The training integrates the principles of experiential learning and is designed to reach students across campus. We also investigate the moderating role of entrepreneurial passion on opportunity recognition learning. We use a quasi-experimental design with pre-test, post-test in two European universities. The results demonstrate that the training has positive significant effects on the accurate identification of business opportunities' prototypical viability. Intense positive feelings about entrepreneurship moderate the learning process. We provide insights into entrepreneurship education practice across campus. info:eu-repo/semantics/publishedVersion

This study analyses the dynamics of entrepreneurship in Portugal and other European Union countries from 2010 to 2014. We used the Global Entrepreneurship Monitor (GEM) data collected through representative samples of the population of each country to analyze three main areas: entrepreneurial activity, entrepreneurial attitudes and entrepreneurial aspirations. Our results show that in 2010, 2011, 2012 and 2013, the total early-entrepreneurship rate in Portugal was the same as the average in EU countries but in 2014 it was higher. However, this rise in entrepreneurial activity in Portugal in 2014 was mainly necessity-driven and not improvement-driven. The results also show that despite the fact that Portugal was perceived to have poor opportunities for new business during this period, Portuguese people believe more strongly than people in other countries that they have the required knowledge and skills to start a business. In general, although entrepreneurial attitudes in Portugal are characterized by average entrepreneurial intentions, lower perceived opportunities, higher perceived capabilities to start a business, their fear of failure would prevent them from starting a business. These results are relevant with regard to rethinking the promotion of entrepreneurship in Portugal. info:eu-repo/semantics/publishedVersion

This chapter describes how the ‘whole space’ of the radio production process has been adapted, following a participatory media approach, to function as a motivating and innovative pedagogy that promotes the informal learning of 21st century skills. This has been achieved with the help of two Community Action Research projects, namely RadioActive UK and RadioActive Europe, that have been funded by the Nominet Trust in the UK and the EC Lifelong Learning Programme, respectively.

In a context of social disaffection and economic crisis, acquiring the skills that promote employability and social participation is an increasing priority. RadioActive Europe is a project that addresses these issues, offering non-formal learning through Internet radio. This article analyzes the implementation of the project in Portugal amongst groups of young people in vulnerable contexts. Our findings suggest that participatory action-research and media education are valuable ways of empowering youngsters from deprived contexts, complementing the constraints of formal schooling., En un contexto de disgregación y crisis social, la adquisición de competencias que permitan aumentar las oportunidades de empleo y promuevan una ciudadanía más involucrada se ha ido haciendo cada vez más prioritaria. El proyecto RadioActive Europe surge en este contexto, proponiendo un aprendizaje no formal a partir de una radio ubicada en Internet. Este artículo examina la implantación del proyecto en Portugal, como una iniciativa dirigida a jóvenes en situaciones vulnerables. Se debate el potencial de proyectos de investigación-acción participativa y de la educación para los medios como forma de empoderar a jóvenes en contextos desfavorecidos, como comp

Made available in DSpace on 2016-08-30T10:50:20Z (GMT). No. of bitstreams: 1 tese_7865_Sonya Cristina Placidos.pdf: 1685656 bytes, checksum: cb576cb428f893d49e7e067b47ff972c (MD5) Previous issue date: 2014-07-16 A vivência da doença oncológica proporciona sofrimento tanto no paciente quanto no membro da família responsável pelo cuidado. Objetivos: Avaliar a Qualidade de Vida do Cuidador Familiar das mulheres em tratamento do câncer de mama e verificar sua associação com dados sociodemográficos do cuidador e os dados clínicos das mulheres; avaliar a sobrecarga do Cuidador Familiar e examinar a sua relação com a qualidade de vida. Metodologia: Trata-se de um estudo observacional realizado no Hospital Santa Rita de Cássia (HSRC), cuja amostra foi composta de 62 cuidadores familiares. Coletaram-se variáveis sociodemográficas através da técnica de entrevista com registro em formulário; utilizou-se o questionário SF-36 (Study36Item Short-Form Health Survey) para avaliação da Qualidade de Vida e a escala Zarit Burden Interview (ZBI) para mensurar a sobrecarga. Utilizou-se o teste Kruskall Wallis para verificar associação dos escores de Qualidade de Vida com as variáveis estudadas, o teste qui-quadrado para avaliar a associação das variáveis com a presença de sobrecarga no cuidador e o teste Mann-Whitney para verificar a relação entre a presença de sobrecarga e os escores de Qualidade de Vida. Resultados: Houve predomínio de cuidadores do sexo feminino, filhas (os), estado civil casado, com faixa etária entre 46 a 55 anos. Encontrou-se significância estatística (p

Neste artigo, apresentamos uma discussão sobre as potencialidades da rádio e dos media digitais para uma educação para os media. Esta contextualização, que inclui o contexto português relativamente ao uso da rádio como meio em contexto educativo, pretende criar o pano de fundo para a exposição da metodologia aplicada pelo consórcio europeu RadioActive Europe, estruturada em pressupostos de investigação-ação, concentrados em formas de empoderamento que efetivamente constituam elementos de crescimento curricular dos jovens envolvidos e que possam ser usados na procura de emprego. Em seguida, estaremos em condições de expor e refletir sobre os dados preliminares de aplicação do projeto, que decorre entre 2013 e 2014 em cinco países europeus, centrando-nos em processos de ligação ao digital e de ligação à comunidade envolvente.

Incubators or policymakers need to decide which applicants to invest their budget and resources in. In the interest of avoiding misdirected budgets, they will naturally seek to invest in those applicants with the greatest potential for succeeding. This article describes a method designed to help in making sound investment decisions by selecting those entrepreneurs most likely to succeed. The methodology involves two steps: the first focuses on the assessment of individual characteristics, and the second focuses on the evaluation of the business opportunity. We applied this methodology on an entrepreneurship promotion programme following a longitudinal design. By the end of the programme, the 15 selected participants were successful in the implementation of their start-ups. This would indicate, therefore, that using this entrepreneur selection method can help in the investment decision making process because it enables entrepreneurship agents to more effectively evaluate individuals and their opportunities.

Porto, Portugal : CIMJ - Centro de Investigação Media e Jornalismo 2014, 42 S., In keeping with the overarching RadioActive101 (RA101) spirit and ethos, this report is the product of collaborative and joined-up thinking from within the European consortium spread across five countries. As such, it is not simply a single voice reporting on the experiences and knowledge gained during the project. Rather it is a range of different voices, coming together to create a holistic picture. The reason for this is straightforward, because whilst RA101 engages those whose voices go unheard, the contexts in which this happens are unique to each partner country. It would not be possible to capture fully the rich and diverse experiences of each radio-activist in every country if this had been written from one country’s perspective. (DIPF/Orig.)

Caulim é um produto originado pela ação do intemperismo de silicatos de alumínio como os feldspatos, que na região amazônica é favorecida pelo clima quente e úmido. Usado na fabricação de materiais refratários, cimentos, fármacos, catalisadores, cobertura e enchimentos de papel e outras diversas finalidades. Este trabalho tem como objetivo a caracterização e a comparação de caulins de coberturas e in natura de diferentes regiões do Pará (Rio Capim, Jarí e Vila do Conde) de origens sedimentares com caulins utilizados como materiais de referência (IPT-28, IPT-32, IPT-42, KGa-1b e KGa-2). Nas caracterizações foram utilizados métodos de análise química, física e mineralógica como: Análise de tamanho de partícula, Difração de raios X, Fluorescência de raios X, Microscopia Eletrônica de Varredura, Análise Térmica Diferencial. Os resultados mostraram como principal fase mineral em todos os caulins estudados a caulinita, com diferentes graus de "cristalinidade". Os caulins amazônicos apresentaram-se com alto e baixo grau de ordem estrutural, assim como os materiais de referências. No que se referem às propriedades de composição química, ambos os materiais apresentaram teores de SiO2 + Al2O3 acima de 90%, teores de Na2O e TiO2 muito baixos, em média 0,6% e 1,92%, respectivamente para os materiais de referência, e para os amazônicos foram de Na2O 0,3% e 1,62% para TiO2. Quanto à análise de tamanho de partícula, observaram-se variações de D50 = 0,7 a 9 µm para os da Amazônia e D50 = 1,7 a 6 µm para os de referência. Os caulins amazônicos sedimentares por mostrarem baixos teores de impurezas e por serem encontrados em grandes quantidades, sugerem um forte potencial para utilização como caulins de referência. Kaolin is a product originated by the weathering action of aluminum silicates, such as feldspars, which in the Amazon region is favored by warm and humid climate. Used in fabrication of refractory, cement, pharmaceuticals, catalysts, paper coating and filler and other several purposes. This study aims to characterization and comparison of kaolins for paper coating and in natura from different regions in Pará ( Rio Capim, Jarí and Vila do Conde) of sedimentary origin with kaolins used as reference materials (IPT-28, IPT-32, IPT-42, KGa-1b e KGa-2). The characterizations were carried out by methods of chemical, physical and mineralogical analyses: Particle size distribution, X-Ray Diffraction, X-Ray Fluorescence, Scanning Electron Microscopy, Differential Thermal Analysis. The results showed as main mineral phase in all kaolin studied the kaolinite, with different degrees of "crystallinity". The Amazon kaolins presented high and low degree of structural order as well as reference materials. With respect to the properties of chemical composition, both materials showed levels of SiO2 + Al2O3 above 90%, low levels of Na2O and TiO2, with average of 0.6% and 1.92%, respectively for the reference materials, and for amazon kaolins were 0.3% and 1.62% to TiO2. The particle size analysis showed variances of the D50 from 0.7 to 9 µm to the amazon kaolins and from 1.7 to 6 µm to the reference materials. The sedimentary amazon kaolins, with low levels of impurities and found in large quantities, suggest a strong potential for use as reference kaolins

Ao longo dos anos o desenvolvimento industrial trouxe uma crescente geração de resíduos, que são potenciais problemas ambientais. Estudos das características destes materiais, bem como o desenvolvimento de técnicas para sua utilização se tornam imprescindíveis para a preservação do meio ambiente. Assim este trabalho objetiva a caracterização e utilização de cinza volante proveniente da queima de carvão mineral em caldeiras, assim como o uso de microssílica, utilizada para alterar a relação molar Si/Al da mistura cinza/microssílica na síntese de zeólitas. Para a caracterização da cinza foram utilizados métodos de análise química, física e mineralógica como: difração de raios X, fluorescência de raios X, microscopia eletrônica de varredura, análise granulométrica, análise térmica diferencial e termogravimétrica. Os ensaios de síntese foram feitos a 60, 100, 150 e 190 °C, com razão molar de Na2O/Al2O3 igual a 5 e Si/Al variando de 2,12 a 15, e tempo de reação 24 h. Os resultados da caracterização da cinza mostram potencial utilização deste como matéria-prima para a síntese de zeólitas, pois apresenta ~ 50% de SiO2 e Al2O3, fases mineralógicas bem definidas, baixo teor de umidade, baixa granulometria (d90 < 10 µm), entre outros. Análises de difração de raios X dos produtos das sínteses mostraram a formação de alguns tipos de zeólitas, como analcima, phillipsita, sodalita, zeolita P e tobermorita. Deste modo, a mistura cinza e microssílica nestas condições reacionais mostram-se matérias-primas promissoras para a síntese de zeólitas. Along the years, worldwide industrial development has causing a growing generation of residues, bringing potentials environmental problems. A study of the characteristics of these wastes, as well as the development of techniques for their use in new processes becomes indispensable for the environment preservation. The main purpose of this work is to evaluate the possible use of two important industrial residues from the Amazon region for zeolite synthesis: (a) the fly ash (particle size < 100 µm) that comes from burning of mineral coal in boiler; and (b) the microsilica, a by-product of the reaction between quartz and coal in the production of metallic silicon and alloys iron-silicon.The following chemical, physical and mineralogical characterization methods were carried out: X-ray diffractometry, X-ray fluorescence, scanning electron microscopy, granulometric analysis, differential thermal and thermogravimetric analysis (DTA-TG). The analyses were carried out at the following conditions: 60, 100, 150 and 190 °C, Na2O/Al2O3 molar ratio of 5 and Si/Al molar ratio ranging from 2.12 to 15, and reaction time of 24 h. The results of the fly characterization demonstrate its enormous potential as raw material for the zeolite synthesis. SiO2 and Al2O3 represent more than 50% of its composition, mineralogical phases defined, low humidity content, low particle size (d90 < 10 µm), among others. Mineralogical analyses of the synthesized products showed the formation of some zeolite types, as follow: analcime, phillipsite, sodalite, zeolite P and tobermorite. The results show that the mixture fly ash-microsilica in these reaction conditions point to a promising material for zeolite synthesis.

Texto completo: acesso restrito. p. 492–493 Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-08-06T13:36:08Z No. of bitstreams: 1 M. T. B. Guedes.pdf: 199192 bytes, checksum: 7c5356840d291ce2a9f5b13c34e31cb7 (MD5) Approved for entry into archive by Patricia Barroso (pbarroso@ufba.br) on 2014-08-07T17:42:32Z (GMT) No. of bitstreams: 1 M. T. B. Guedes.pdf: 199192 bytes, checksum: 7c5356840d291ce2a9f5b13c34e31cb7 (MD5) Made available in DSpace on 2014-08-07T17:42:32Z (GMT). No. of bitstreams: 1 M. T. B. Guedes.pdf: 199192 bytes, checksum: 7c5356840d291ce2a9f5b13c34e31cb7 (MD5) Previous issue date: 2012 This report describes the inhibition of the proteolytic activity of Haemonchus contortus lysate by a mixture of n-alkyl ferulates isolated from Maprounea guianensis. These compounds were evaluated in vitro for the ability to inhibit the H. contortus proteases using SDS–PAGE copolymerized with gelatine (zymography) and by assaying the hemoglobinolytic activity of these enzymes in solution. The ferulates abrogated the proteolysis compared to E-64, suggesting the activity is the result of a cysteine protease.

This research includes two complementary studies. Study 1 intends to analyze the stability of the latent construct job satisfaction over time, through four facets - satisfaction with relationships, rewards, human resources management practices and work itself. Study 2 aims to compare the results obtained with an aggregate weighted measure of job satisfaction (Aggregated Job Satisfaction) and a single item measure (Overall Job Satisfaction). Both are cross-sectional studies with repeated measures on six time moments over a twelve years period (1996-2008) in the Portuguese financial sector organizations. Results from study 1 evidences the structural invariance of the latent construct job satisfaction and the different loading pattern on each facet, over time. Study 2 evidences that the overall job satisfaction and the aggregated job satisfaction measures displays a similar pattern of results overtime. Moreover, job satisfaction facets predicts overall job satisfaction. Theoretically, this research presents a wider view on job satisfaction issues: its facets, the debate on aggregated vs overall measures and relationships patterns over time. Moreover, satisfaction with human resources management emerges as the stronger predictor of overall job satisfaction in all the six time periods. Results suggest that managers can improve satisfaction through performance appraisal systems and training. info:eu-repo/semantics/acceptedVersion

Acesso restrito: Texto completo. p. 138-143. Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-04-20T13:06:42Z No. of bitstreams: 1 __ac.els-cdn.com_S016524...6d7d903a5768752a523568cb98a8f.pdf: 181691 bytes, checksum: 3867218d027c005daae1e1cdd404ac99 (MD5) Made available in DSpace on 2012-04-20T13:06:42Z (GMT). No. of bitstreams: 1 __ac.els-cdn.com_S016524...6d7d903a5768752a523568cb98a8f.pdf: 181691 bytes, checksum: 3867218d027c005daae1e1cdd404ac99 (MD5) Previous issue date: 2010-07 This study evaluated the transference of maternal-specific antibodies against Haemonchus contortus and the humoral immune response of 32 goat kids to natural infection by the parasite,from birth to 5 months of age. All serum samples collected immediately after birth and before colostrum ingestion were negative for H. contortus antibodies, as demonstrated by ELISA. However, 30 and 60 days after colostrum and milk ingestion, antibody detection was positive and faecal egg count (FEC) was negative, suggesting the transference of humoral immunity by colostrum. All animals were FEC-negative for Strongylodea until four months of age, consistent with the stage of animal development where nourishment comes only from breastfeeding. Animals also presented a high serum IgA concentration, associated with lower levels of total IgG. This work demonstrated that passive humoral immunity against H. contortus in goat kids occurs via the colostrum and not by transplacental transference of antibodies.

O propósito deste estudo foi avaliar o processamento da informação de 43 gestores empresariais de desempenho superior. No seu enquadramento teórico recorremos a três modelos: a Teoria dos Papéis Gerenciais de Henry Mintzberg, a Teoria do Processamento da Informação e o Modelo de Processo de Resposta ao Rorschach de John Exner. A ava-liação dos sujeitos recorreu ao método do Rorschach. Os resultados deste estudo mos-traram que esses gerentes são capazes de recolher dados, avaliá-los e estabelecer ran-kings de maneira adequada. Ao mesmo tempo, verifica-se que são capazes de ser objeti-vos e precisos na avaliação dos problemas. Este estilo de processamento de informação possibilita uma interpretação do mundo a partir de um modo de processamento ou de um estilo cognitivo, próprio e característico., The purpose of this study was to evaluate the information processing of 43 business managers with a professional superior performance. The theoretical framework consid-ers three models: the Theory of Managerial Roles of Henry Mintzberg, the Theory of In-formation Processing, and Process Model Response to Rorschach by John Exner. The participants have been evaluated by Rorschach method. The results show that these managers are able to collect data, evaluate them and establish rankings properly. At same time they are capable of being objective and accurate in the problems assessment. This information processing style permits an interpretation of the world around on basis of a very personal and characteristic processing way or cognitive style., Fundação para a Ciência e a Tecnologia (FCT), no âmbito do Fundo de Apoio à Comunidade Científica - Edição de Publicações Periódicas de Natureza Científica.

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Várias plantas nativas do bioma Cerrado são utilizadas como plantas medicinais. Dentre elas, o pequi possuí ação moluscicida utilizada no combate a esquistossomose. Objetivamos neste trabalho a verificação da toxicidade de frações de pequi sobre outros organismos aquáticos, antes da utilização destas em mananciais. Para isso, analisamos alterações no índice mitótico das células epiteliais das brânquias de Guaru (Poecilia vivipara) expostas às frações da folha e da casca do caule de pequi extraídas com acetato de etila. Constatamos que nenhuma das frações se mostrou letal aos peixes. Os animais expostos à fração acetato de etila da folha não apresentaram modificações significativas no índice mitótico em relação ao grupo controle, mas os animais expostos à fração acetato de etila da casca do caule apresentaram aumento do índice mitótico das células epiteliais em duas regiões dos filamentos branquiais. Desta forma, a fração acetato de etila da folha poderia ser utilizada como moluscicida em mananciais, enquanto que a fração acetato de etila da casca do caule necessitaria passar por outros testes mais específicos. Many wild plants of the Cerrado bioma are used as medicinal plants. The pequi (Caryocar brasiliensis) is representative of those equipped with molluscicidal action against schistosomiasis. This paper sets out to verify the toxic action of pequi fractions in other aquatic animals before they are used in rivers or lakes. Analysis were made of the alterations to the mitotic index of epithelia cells in the gills of guppy (Poecilia vivipara) exposed to ethyl-acetate fraction of leaf pequi and bark. Animals exposed to ethyl-acetate fraction (leaf), no significant change was observed in the mitotic index when compared with the control group, whereas in fish exposed to ethyl-acetate fraction (bark) we detected an increase in mitotic index of the epithelia cells in two regions of the branchial filaments. Thus, ethyl-acetate fractions (leaf) could be used against schistosomiasis, given their high efficacy and low action as piscicide.