Ordered Groups
Mostrando 1-12 de 118 artigos, teses e dissertações.
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1. Preparation of Silicon Oxycarbide (SiCO) Ceramics from Different Polymer Architectures and Assessment on the Performance as Electrodic Materials for Voltammetric Sensing of Antioxidant Phenolic Compounds
Silicon oxycarbide (SiCO) ceramics obtained from polymer pyrolysis and with varied carbon contents were prepared and evaluated as new electrodic materials for sensing of tert butylhydroquinone (TBHQ) and butylated hydroxyanisole (BHA) antioxidants. Three polymers were synthesized varying molecular architecture and aromatic carbon groups, followed by pyrolysi
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Synthesis of Highly Ordered Mesoporous MCM-41: Selective External Functionalization by Time Control
Sol-gel synthesis is commonly used to modify the surface of mesoporous silica nanoparticles (MSN) with organic groups through the co-condensation method. The template removal, and the site-controlled addition of organic groups and their partial occlusion inside the framework walls are still a challenge in the one-pot synthesis. Here, we optimize the synthesi
J. Braz. Chem. Soc.. Publicado em: 12/08/2019
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3. Effects of vacuum sealing drainage on the treatment of cranial bone-exposed wounds in rabbits
This study was designed to assess the efficacy of vacuum sealing drainage (VSD) on skull exposure wounds in rabbits and to investigate the underlying mechanism of the process. Full-thickness excisional circular wounds 2×2 cm with or without periosteum involvement were created in 88 New Zealand white rabbits (mean body weight: 3.0±0.65 kg). Animals were ran
Braz J Med Biol Res. Publicado em: 02/10/2017
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4. Mesoporous molecular sieve MCM-41 synthesis from fluoride media
A study of the synthesis of MCM-41 mesoporous molecular sieves in fluoride media, having no alkaline metal ions, was performed by changing the gel composition and crystallization temperature and time. X-ray diffraction and nitrogen adsorption analyses showed that highly ordered MCM-41 samples were obtained from gels with a NH4OH/SiO2 molar ratio in the 3.25-
Brazilian Journal of Chemical Engineering. Publicado em: 2011-12
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5. Modelos não-lineares para dados longitudinais provenientes de experimentos em blocos casualizados abordagem bayesiana / Nonlinear models for longitudinal data from experiments in randomized block design a bayesian framework
Data consisting of repeated measurements taken on each of a number of individual arise commonly in agricultural and biological applications. Modeling data of this kind usually involves the characterization of the relationship between the measured response and covariate. In many application,the proposed systematic relationship between the measured response is
Publicado em: 2011
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6. Atitudes, comportamento e discriminaÃÃo no mercado de trabalho brasileiro / Attitudes, behavior and discrimination in the Brazilian labor market
This dissertation presents two papers referring to discrimination and prejudice in the Brazilian work market using different data bank. The first part of this research approaches different aspects of the probability of dismissing someone for being an HIV positive worker. The second part studies the possible divergences of income expectation among men and wom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2010
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7. Grupos de Divisibilidade e Reticulados
Apresentamos nesse trabalho uma classificação completa de sub-reticulados de (Zn,+, ≥) que não são grupos de divisibilidade. Deste modo, nós fornecemos uma nova classe de grupos ordenados que são filtrados, mas não são grupos de divisibilidade. Os sub-reticulados aqui apresentados generaliza os exemplos de P. Jaffard e G. G. Bastos.
Publicado em: 2010
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8. Efeito do fluor sobre a matriz organica do esmalte dentario de camundongos / Fluoride effect in the secretory-stage enamel organic extracellular matrix of mice
Dental fluorosis is characterized by alterations in the aspect of mature enamel due to hypomineralization, it is caused by chronic ingestion of fluoride during tooth development. Fluoride seems to influence on formation of enamel organic matrix. Previous studies have shown that the organic extracellular matrix of the enamel secretory phase is birefringent, e
Publicado em: 2010
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9. IMAGENS DO FEMININO: A CONSTRUÇÃO DE GÊNEROS NA TELEVISÃO BRASILEIRA / IMAGES OF FEMININE: THE CONSTRUCTION OF GENDERS ON BRAZILIAN TELEVISION
This thesis analyzes the female representations in the serial fictions produced by Globo TV Network studying the series Malu Mulher and Mulher, and the miniseries Anos Dourados and Hilda Furacão. Considering the television set as a means of transmission which is characterized by its velocity, fragmentation, and simultaneity of contents, one is able to ident
Publicado em: 2010
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10. MECANISMOS DE REGENERAÇÃO NATURAL E ESTRUTURA POPULACIONAL DE TRÊS ESPÉCIES ARBÓREAS EM REMANESCENTE DE FLORESTA OMBRÓFILA MISTA, RIO GRANDE DO SUL / NATURAL REGENERATION MECHANISMS AND POPULATION STRUCTURE OF THREE SPECIES IN MIXED RAIN FOREST REMNANT, RIO GRANDE DO SUL
The ecology of regeneration and population dynamics is necessary information to the conservation and management of forest ecosystems. Thus, this study aimed to characterize: a) the mechanisms of natural regeneration in a Mixed Rain Forest remnant and b) the population structure of Araucaria angustifolia (Bertol.) Kuntze, Blepharocalyx salicifolius (Kunth) O.
Publicado em: 2010
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11. Utilização de medidas de previsibilidade em sinais de voz para discriminação de patologias de laringe / Application of predictability measures to voice signals for larynx pathology differentiation
This thesis presents initial studies of the application of predictability measures to voice signal analysis. Its aim is to develop methods that are capable of differentiating healthy and pathological signals, also amongst pathologies. In order to do that, we perform an attempt to measure the uncertainty and predictability variations of the signals from the a
Publicado em: 2009
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12. Control of Salmonella typhimurium in broilers using lactose / Controle de Salmonella Typhimurium em frangos de corte utilizando lactose
This study was conducted at the Experimental Center of Poultry Diseases and Laboratory of Bacteriology Department of Veterinary Medicine Veterinary School, Federal University of Goias to evaluate the effects of lactulose in Salmonella typhimurium in broilers. The experimental design was completely randomized, evaluating substance applied (lactulose) and bact
Publicado em: 2009