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Mostrando 13-24 de 467 artigos, teses e dissertações.
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13. Resistance of the stable fly, Stomoxys calcitrans (Diptera: Muscidae), to cypermethrin in outbreak areas in Midwestern Brazil
Resumo Explosões populacionais da mosca-dos-estábulos (Stomoxys calcitrans) tornaram-se uma séria preocupação para a pecuária próxima a usinas de cana-de-açúcar em algumas regiões do Brasil, devido à massiva reprodução da mosca em resíduos e subprodutos do processamento da cana. Apesar da limitada eficiência dos inseticidas no controle dos sur
Rev. Bras. Parasitol. Vet.. Publicado em: 04/11/2019
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14. Inhibitory Effects of the Lipophilic Extracts and An Isolated Meroditerpene of Brown Alga in Pasture Weeds in the Eastern Amazon Region
RESUMO: Dois extratos lipofílicos e o ácido atomárico (1), um produto natural isolado, foram obtidos da alga parda marinha Stypopodium zonale (Dictyotaceae) para identificar e caracterizar seus potenciais efeitos inibitórios na germinação de sementes e no alongamento de radícula e do hipocótilo das plantas daninhas Mimosa pudica e Senna obtusifolia.
Planta daninha. Publicado em: 04/11/2019
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15. Evaluation of bioherbicidal potential of Carica papaya leaves
Resumo Devido ao aumento do número de ervas daninhas resistentes aos herbicidas, é necessário explorar o potencial alelopático das plantas como uma alternativa. A pesquisa foi conduzida com o objetivo de investigar os efeitos alelopáticos do pó foliar de Carica papaya e do extrato aquoso das sementes, bem como das sementes pré-germinadas de Avena fatu
Braz. J. Biol.. Publicado em: 21/10/2019
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16. Screening on prenatal infections in the South and Southwest macro-regions in the State of Bahia, Brazil: detected on paper filter
Resumo Objetivos: estimar a taxa de detecção de patologias da TPN em papel de filtro nas regiões Sul e Sudoeste do Estado da Bahia, bem como delinear o perfil epidemiológico dessas gestantes, calcular e estimar a taxa de adesão e abrangência de cobertura do Programa. Métodos: estudo descritivo, de agosto 2013 a agosto de 2015, de dados obtidos do La
Rev. Bras. Saude Mater. Infant.. Publicado em: 16/09/2019
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17. Simulation and Design of a Bandpass Filter Based on Substrate Integrated E-Plane Waveguide
Abstract This paper presents a bandpass filter based on a substrate integrated E-plane waveguide (SIEW) structure for wireless applications, at X-band. The SIEW geometry allows the development of new horizontally polarized filter topologies, unlike filter structures based on substrate integrated waveguide (SIW), which present vertical polarization (perpendic
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 12/09/2019
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18. Effect of evaporated ethyl pyruvate on reducing salmonella enteritidis in raw chicken meat
ABSTRACT In this study, the effect of evaporated ethyl pyruvate (EP) was evaluated for the decontamination of Salmonella Enteritidis on chicken leg meat as a safe alternative to antimicrobial agent. Also, total aerobic mesophilic bacteria (TAMB), Enterobacteriaceae, Escherichia coli and yeast-mold counts samples were investigated. Subsequently, the samples w
Braz. J. Poult. Sci.. Publicado em: 29/07/2019
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19. A comparison of methods for the detection of Ascochyta rabiei in chickpea seeds
RESUMO A saúde das sementes é um dos fatores mais importantes que afetam a qualidade das sementes de grão-de-bico (Cicer arietinum). O presente estudo tem como objetivo comparar e identificar melhores métodos de incubação para a detecção de Ascochyta rabiei associada a sementes de grão-de-bico. Quatro protocolos foram comparados em sua sensibilidade
Summa phytopathol.. Publicado em: 10/07/2019
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20. Basic heel prick test: inclusion of screening, diagnosis and criteria for early confirmation of congenital infection by Toxoplasma gondii
ABSTRACT Toxoplasma gondii can cross the placental barrier, causing fetal infection with potentially severe sequelae. The aim of this study was to evaluate whether the serological screening for toxoplasmosis should be included in the basic neonatal heel prick test in order to establish criteria for the confirmation and/or exclusion of the diagnosis of congen
Rev. Inst. Med. trop. S. Paulo. Publicado em: 19/06/2019
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21. A Novel Fractal Multi-band Frequency Selective Surface
Abstract In this paper, a new multiband fractal frequency selective surface (MF-FSS) is proposed. The work presents a new fractal design methodology for FSSs with Swastika fractal patch elements. The proposed MF-FSS includes periodic arrays of metallic patches, printed on a single layer substrate. The structure parametric analysis is carried out in terms of
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 19/06/2019
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22. Evaluation of the Genetic Screening Processor for the Performance of Newborn Screening Tests
Abstract The collection of dried blood spots (DBSs) on filter paper has been a powerful tool in newborn screening (NBS) programs and in other fields. However, filter paper has been associated with some level of imprecision due to the filter paper matrix effect. In order to minimize measurement variations, these interferences should be evaluated by NBS assays
J. inborn errors metab. screen.. Publicado em: 30/05/2019
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23. Exploring the metallochromic behavior of pentacyanidoferrates in visual, electronic and Raman spot tests
Abstract: Pentacyanidoferrate(II) complexes of aromatic N-heterocycles, such as 4-cyanopyridine, exhibit characteristic colors and strong metallochromism associated with the donor-acceptor interactions of the metal ions with the cyanide ligands. In the presence of transition metal ions insoluble polymeric complexes are formed, displaying bright yellow, red,
An. Acad. Bras. Ciênc.. Publicado em: 25/04/2019
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24. Fluorescent Sensors Based on Cu-Doped Carbon Quantum Dots for the Detection of Rutin
In this paper, Cu-doped carbon quantum dots (Cu-CQDs) were prepared by carrying out thermolysis of Na2[Cu(EDTA)] and hydroxylamine hydrochloride at 300 ºC for 2 h. The as-prepared Cu-CQDs were characterized by UV-Vis, Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diff
J. Braz. Chem. Soc.. Publicado em: 08/04/2019