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Mostrando 13-24 de 146 artigos, teses e dissertações.
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13. A closer look at the main actors of Neotropical floodplain food webs: functional classification and niche overlap of dominant benthic invertebrates in a floodplain lake of Paraná River
ABSTRACT Functional classification of animals is necessary to enhance the predictive power of food web models. However, while there is a large database for functional classification of benthic invertebrates (Functional Feeding Groups, FFG) in the temperate zone, the attribution of individual species of riverine invertebrates is still in its infancies in the
Iheringia, Sér. Zool.. Publicado em: 10/06/2016
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14. Nanocellulose Produced from Rice Hulls and its Effect on the Properties of Biodegradable Starch Films
Rice hull is a residue from agro-industry that can be used to produce nanocellulose. We produced nanocellulose from rice hulls through bleaching (with a 5% NaOH solution followed by a peracetic acid solution) and acid hydrolysis at a mild temperature (45ºC) followed by ultrasonication. We investigated the microstructure, crystallinity and thermal stability
Mat. Res.. Publicado em: 12/02/2016
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15. ISOLATION AND CHARACTERIZATION OF NANOFIBRILLATED CELLULOSE FROM OAT HULLS
The objectives of this work were to investigate the microstructure, crystallinity and thermal stability of nanofibrillated cellulose obtained from oat hulls using bleaching and acid hydrolysis at a mild temperature (45 ºC) followed by ultrasonication. The oat hulls were bleached with peracetic acid, and after bleaching, the compact structure around the cell
Quím. Nova. Publicado em: 2015-05
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16. The diet of the black widow spider Latrodectus mirabilis (Theridiidae) in two cereal crops of central Argentina
The spider Latrodectus mirabilis (Holmberg, 1876) is commonly found in cereals crops of central Argentina. We studied its diet composition at the field and capture rate on leaf-cutting ants based on laboratory experiments. This study comprises the first approach that documents the diet of L. mirabilis in wheat and oat fields of central Argentina. We identifi
Iheringia, Sér. Zool.. Publicado em: 2013-12
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17. Linear and non-linear finite element analysis of shear-corrected composites box beams
The Updated Lagrangian formulation for non-linear finite element analysis is applied to the problem of thin-walled composites box beams undergoing large displacements. A shear correction factor for thin-closed rectangular sections is introduced into some terms of the variational formulation and its influence in the results is analyzed, in both linear and non
Lat. Am. j. solids struct.. Publicado em: 2013-07
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18. Tecnologías emergentes en la educación: una experiencia de formación de docentes que fomenta el diseño de ambientes de aprendizaje
This paper describes the results of a teacher training experience with a group of students taking the elective Emerging Technologies in Education (in the Maestría en Informática Educativa course at Universidad de La Sabana), whose aim is to "offer students a space for reflection and conceptualization on main emerging technologies (ET) and their uses in edu
Educ. Soc.. Publicado em: 2013-06
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19. Vivências de familiares de pacientes com câncer em processo de terminalidade de vida: um estudo clínico-qualitativo / Experiences of relatives of patients with cancer in the process of life terminality: a clinical-qualitative study.
The impact of a disease causes significant changes in the household, especially when in contact with the possibility of finiteness, since the resources and procedures used are no longer effective in fighting cancer. This qualitative research aimed to understand the meanings attributed to the experience of relatives of terminally ill cancer patients in the ho
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
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20. Rhiz hommes: redes de subjetividades / Rhiz hommes: subjectivities webs
Com a profusão de imagens fotográficas do mundo capitalista e o incentivo para que todos sejamos produtores, o modo de fruição das fotografias e a nossa relação com esses simulacros vão se alterando. A necessidade que a web traz de nos apresentarmos em imagens faz com que tenhamos que fabricá-las e através delas passamos a nos relacionar de maneira
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2012
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21. NUMERICAL ANALYSIS OF THE BEHAVIOR OF FLAT SLABS PRESTRESSED CONCRETE FLOORS / ANÁLISE NUMÉRICA DO COMPORTAMENTO DE PAVIMENTOS CONSTITUÍDOS DE LAJES LISAS DE CONCRETO PROTENDIDO
Concrete flat slabs prestressed with unbounded greased strands have been used in building floors over the last years. This structural solution is ideal when the columns are regularly distributed. In addition, it is known that prestressed floors have some technical advantages when compared to the traditional solution in reinforced concrete, mainly in cases of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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22. La interactividad en las sedes webs corporativas: retos y oportunidades para las pymes
The application of Internet tools, especially interactivity, has changed the way companies interact with their stakeholders. This paper analyzes, using a content analysis and a factorial analysis, small and medium-sized enterprise (SMEs) predisposition to interact with their audiences on their corporate websites, the main tool to planned communication, and p
Perspect. ciênc. inf.. Publicado em: 2012-12
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23. Avaliação da informação de websites turísticos das cidades-sede da copa 2014
Trata da avaliação das informações disponibilizadas em websites turísticos oficiais dos estados e das cidades-sede brasileiras da Copa do Mundo de 2014, seguindo o modelo e os critérios de avaliação estabelecidos na metodologia desenvolvida por Díaz (2005). Descreve a relação entre turismo e sociedade da informação, enfatizando a importância do
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011
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24. A autonomia comunicacional do cibernativo na Internet. / Born in cyberculture: the cybernatives communicational autonomy on the Internet.
No ciberespaço, vem se estabelecendo um padrão de comportamento instaurado pela geração nascida na era da cibercultura, a qual nomeamos de cibernativa. Estudar o processo de construção de uma cultura própria a partir da autonomia comunicacional que este internauta desenvolve no ciberespaço é nosso objetivo. Para tanto, fizemos uma pesquisa explorand
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2011