Bioindicator
Mostrando 25-36 de 90 artigos, teses e dissertações.
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25. Active caspase-3 expression levels as bioindicator of individual radiosensitivity
ABSTRACT Several molecules and events involved in cell response to radiation-induced damage have been investigated towards a personalized radiotherapy. Considering the importance of active caspase-3 in the proteolytic cascade that ensures radiation-induced apoptosis execution, this research was designed to evaluate the expression levels of this protein as a
An. Acad. Bras. Ciênc.. Publicado em: 04/05/2017
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26. Allelopathic suppression by Conyza canadensis depends on the interaction between latitude and the degree of the plant’s invasion
ABSTRACT Allelopathic suppression of the growth of co-occurring plant species in invaded ecosystems is an important factor in some plant invasions. This study uses leaf extracts of the invasive plant species Conyza canadensis to determine its allelopathic effects along a latitudinal gradient, and under different cover classes and degrees of invasion, on seed
Acta Bot. Bras.. Publicado em: 02/05/2017
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27. Copper Induced Lysosomal Membrane Destabilisation in Haemolymph Cells of Mediterranean Green Crab (Carcinus aestuarii, Nardo, 1847) from the Narta Lagoon (Albania)
ABSTRACTDestabilisation of blood cell lysosomes in Mediterranean green crabCarcinus aestuarii was investigated using Neutral Red Retention Assay (NRRA). Crabs collected in Narta Lagoon, Vlora (Albania) during May 2014 were exposed in the laboratory to sub-lethal, environmentally realistic concentrations of copper. Neutral Red Retention Time (NRRT) and glucos
Braz. arch. biol. technol.. Publicado em: 2015-10
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28. Morpho-histological characterization of immature of the bioindicator midge Chironomus sancticaroli Strixino and Strixino (Diptera, Chironomidae)
ABSTRACTChironomidae immature are used as bioindicators of sediment quality in aquatic ecosystems and ecotoxicological assays. Histological descriptions for this family are outdated and limited and there are no studies with Neotropical species. The aim of this study was to describe the tissue architecture of several organs of the larva of Chironomus sanctica
Rev. Bras. entomol.. Publicado em: 2015-09
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29. Long-term correlation of the electrocorticogram as a bioindicator of brain exposure to ionizing radiation
Understanding the effects of radiation and its possible influence on the nervous system are of great clinical interest. However, there have been few electrophysiological studies on brain activity after exposure to ionizing radiation (IR). A new methodological approach regarding the assessment of the possible effects of IR on brain activity is the use of line
Braz J Med Biol Res. Publicado em: 12/06/2015
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30. Bioindicator Thais carinifera (mollusca, gastropoda): imposex response and consequences along the Pakistan coast during the period from 1993 to 2012
Resumo O fenômeno hormonal "imposex" foi investigado e relatado para o gastrópode muricídeo Thais carinifera durante duas décadas, de 1993 a 2012, em três das seis localidades investigadas ao longo da costa de Sindh and Balochistão, Paquistão. Os estágios VDS 1 a 4 foram aparentes na espécie. A intensidade do imposex permaneceu comparativamente baix
Braz. j. oceanogr.. Publicado em: 2015-06
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31. Evaluation of the use of Leptodactylus ocellatus (Anura: Leptodactylidae) frog tissues as bioindicator of metal contamination in Contas River, Northeastern Brazil
Este trabalho apresenta um estudo sobre a viabilidade de uso de tecidos da espécie Leptodactylus ocellatus (Anura Leptodactylidae) como um bioindicador de poluição por metais. O estudo baseia-se na determinação e correlação das concentrações de manganês, crômio, zinco, níquel, cobre e ferro em sedimentos e tecidos (peles, músculos e vísceras) d
An. Acad. Bras. Ciênc.. Publicado em: 24/10/2014
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32. Profile of micronucleus frequencies and nuclear abnormalities in different species of electric fishes (Gymnotiformes) from the Eastern Amazon
The frequency of spontaneous micronucleus (MN) formation in fish species needs to be determined to evaluate their usefulness for genotoxic biomonitoring. The definition of a good bioindicator takes into account the current knowledge of its metabolic traits as well as other factors including its feeding behavior and relationship to the environment. In this st
Genet. Mol. Biol.. Publicado em: 16/08/2013
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33. Changes in the accumulation of shikimic acid in mycorrhized Capsicum annuum L. grown with application of glyphosate and phosphorus
When glyphosate is added to the soil, it is absorbed by roots and transported by xylem causing growth inhibition in plants. Mycorrhiza is the beneficial association between roots of most plants and soil fungi. The methylphosphonic group of the glyphosate could compete with inorganic phosphates for sorption sites in the soil. The aim of this work was to study
Theor. Exp. Plant Physiol.. Publicado em: 2013
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34. BTEX: DESENVOLVIMENTO DE BARRAS DE EXTRAÇÃO SORTIVA, DETERMINAÇÃO EM EFLUENTE HOSPITALAR E DEGRADAÇÃO POR MEIO DE FOTOCATÁLISE HETEROGÊNEA COM TiO2 SUPORTADO EM POLÍMEROS / BTEX: DEVELOPMENT OF BARS SORPTIVE EXTRACTION, DETERMINATION IN HOSPITAL EFFLUENT AND DEGRADATION BY HETEROGENEOUS PHOTOCATALYSIS WITH TIO2 SUPPORTED IN POLYMERS.
In this work were developed low cost bars of sorptive extraction, using commercial adhesive based on polydimethylsiloxane (PDMS) for the preconcentration and determination of benzene, toluene, ethylbenzene and xylene (BTEX) in effluent from the University Hospital of Santa Maria (HUSM). It was applied multivariate fractional factorial design (26-2) to invest
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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35. Detecting fluoride using a plant species as a bioindicator, evaluating the relationship of endocrine and nerve ganglia in small intestine function, and discovering the effects of protein malnourishment and probiotic supplementation in the digestive system of mammalian models
Anais da Academia Brasileira de Ciências. Publicado em: 2012-09
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36. Setting the reference for the use of Chironomus sancticaroli (Diptera: Chironomidae) as bioindicator: Ontogenetic pattern of larval head structures
Species of Chironomidae are widely used as bioindicators of water quality, since their larvae undergo morphological deformities when in contact with sediment contaminated with chemicals. In this work we endeavored to study the morphology of head structures (antennae, mandible, mentum, pecten epipharyngis, ventromental plate and premandible) throughout the de
Zoologia (Curitiba). Publicado em: 2012-04