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| Branco,Joaquim Olinto; Lunardon-Branco,Maria José; Peret,Alberto Carvalho; Souto,Flávio Xavier; Schveitzer,Rodrigo; Vale,Willian Guimarães. |
| In the period of January and December, 1995, there were collected by means of overtrawl, 12977 samples of macroinvertebrates and demersal fishes, in the Armação do Itapocoroy, Penha (SC), between the depths of 6 to 10 meters, in the periods of morning, afternoon, and evening. There were registered the incidence of 57 families, 80 kinds and 92 species distributed between the macroinvertebrates and demersal fishes. The families of greater incidence were: Portunidae (30.7%), Strombidae (11.4%), Sciaenidae (11.1%) and Bothidae (10.3%) which all together, contributed with 63.5% of the total samples. The grouping analysis presented greater diversity in the Winter (2.77) and smaller one in the Springtime (1,34); the amplitude of variation H' reflects the great... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Association; Macroinvertebrates; Demersal fishes; Armação do Itapocoroy. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000200015 |
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| Oliveira Junior,Enio Nazaré de; Melo,Itamar Soares de; Franco,Telma Teixeira. |
| In this work, changes in the hyphal morphology due to chitosan treatment in some fungal species were studied. Scanning electron microscope (SEM) observations revealed that chitosans with molar fraction of acetyl groups (F A 0.16 and 0.18) and degree of polymerization (DP 1,089 and 1,242) had a direct effect on the morphology of the chitosan-treated fungi, reflecting its potential for causing a delay in the growth of Alternaria alternata (500 µg × mL-1), Botrytis cinerea (1,000 µg × mL-1), Penicillium expansum (1,000 µg × mL-1) and Rhizopus stolonifer (500 µg × mL-1). Mycelial aggregation and structural changes such as excessive branching, swelling of the cell wall and hyphae size reduction were observed in the micrographs. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chitosan; Alternative control of fungi; Antifungal activity; Plant pathogenic fungi; Fungal morphology. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500001 |
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| Estivallet,Hidê Virgínia; Rodrigues,Maria Inês; Marroni,Norma Possa. |
| This work investigated the frog gastric mucosa response to hydrogen peroxide and ethanol induced injury. Acid and mucus secretion were estimated "in vitro" in control animals with intragastric absolute ethanol (1ml/30min. or 2ml/60min.) and hydrogen peroxide. The gastric mucosa morphological conditions were assessed "in vivo", concerning lesion area, pH and mucus. Ethanol (1ml/30min.) was observed to cause hyperemia, cell damage, rupture, edema, erosions, necrosis in gastric mucosa and significant increase in acid secretion. Absolute ethanol (2ml/60min.) caused a decrease in acid secretion due to alcalinization and an increase of mucus and pH. Intragastric hydrogem peroxide provoked gastric unwrinkling and hyperemia, acid secretions were not increased,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gastric acid secretion; Mucus; Ethanol; Hydrogen peroxide; Frog. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000100007 |
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| Lombardi,Simone Pacheco; Passos,Ilene Ribeiro da Silva; Nogueira,Maria Cristina Stolf; Appezzato-da-Glória,Beatriz. |
| Different concentrations of 6-benzyladenine (6-BA) were used in vitro to induce buds in three types of explants: leaf discs, root segments and the seedling itself obtained from in vitro seed germination of Passiflora cincinnata Mast. The 0.5 mg.L -1 6-BA concentration was most suitable for all the three explants, however, bud formation time and means (direct/indirect) were different for each type of explant. In seedlings used as explants, it had shoot regeneration from the primary root. Histological events leading to bud formation via meristemoids were described. The origin was indirect in leaf discs, with callus formation in subepidermal cells of the chlorophyll parenchyma layers. In root segments and in seedling roots, the buds were formed directly in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomical; Organogenesis; 6-benzyladenine; Passionfruit. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200009 |
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| Miyazawa,Mário; Oliveira,Edson L. de; Parra,Mauro S.; Yamashita,Miyuki. |
| Toxicity and uptake of heavy metals of sewage sludge by beans (Phaseolus vulgaris L.) were evaluated in green house experiments. Treatments consisted of 1,0 ; 2,0 and 5,0% (m/m) of dry sewage sludge, collected from Londrina (Bom Retiro and ETE-Sul) and Curitiba (ETE-Belém and RALF). Bean ( variety IAPAR 57) was sown three times at 0, 120 and 240 days after the treatments have been applied. Contents of Cd, Cr, Co, Cu, Ni, and Pb in bean tissues cultivated with 5,0% (m/m) of all sewage sludge were similar to the control and Ba contents were reduced by increasing the quantity of sewage sludge in the soil. The Zn content in tissue bean incresed from 86 mg kg-1 of control to 462 mg kg-1 by applying 5% (m/m) of sewage sludge in soil, but plant beans did not show... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L.; Heavy metal; Metal toxicity; Metal fractionation. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000100012 |
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| Pereira,Juliano da Silva; Ribeiro,Daniele Abe; Lucena,Francielle Henrique; Urbanetz Júnior,Jair. |
| ABSTRACT Solar energy as a form of electric power generation is gaining ground in Brazil, being the subject of worldwide discussions on sustainability. The electric energy, a right of all citizens, represents a consumption of natural resources on a large scale. State schools in Paraná invested more than R$ 46 million to guarantee electricity and thus provide essential running conditions to the system in 2016. Through open data, 15 schools from "Regional Administrativa do Cajuru", in Curitiba/PR, were evaluated in consumption and expenses of electric energy from January to May of 2017 and a solar photovoltaic system was dimensioned to supply the demand of each school. From that, it was estimated the total saving from the electricity that would no longer be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photovoltaic Solar Energy; Renewable energy; Education for Sustainability; State Schools; Public Administration. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000200208 |
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| França,Elvis Joacir de; Fernandes,Elisabete A. De Nadai; Bacchi,Márcio Arruda; Saiki,Mitiko. |
| Instrumental neutron activation analysis (INAA) is a measurement technique of high metrological level for the determination of chemical elements. In the context of BIOTA/FAPESP Program, leaves of trees have been evaluated by INAA for biomonitoring purposes of the Atlantic Forest. To assure the comparability of results in environmental studies, a leaf sample of Marlierea tomentosa (Myrtaceae family) showing the lowest concentrations of chemical elements was selected for the evaluation of analytical quality of the determination under unfavorable conditions. Nevertheless, the homogeneity of chemical concentrations of sample at the 95% of confidence level has been achieved and INAA has presented repeatability of 2% for the determination of Br, Co, Cs, Fe, K,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Uncertainty; INAA; Jackknife; Bootstrap. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000200016 |
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| Santos,Antonio Odair; Wample,Robert L.; Sachidhanantham,Sivakumar; Kaye,Oren. |
| An experiment was carried out from 2005 to 2008, to calibrated NIR-based instrumentation and explore within field grape quality variability and map potential grape quality descriptors along vineyards, as a subsidy for differential harvesting,. The quality indicators (anthocyanin content, pH, titratable acidity and soluble solids) were subject to geo-spatial modeling. Subsequently, the data set was utilized to delineate "within-field" grape quality zone and to determine the timing of the harvest. Differential machine harvesting was implemented and segregation of wine grapes was done "on-the-go". The approach for field prediction of grape quality parameters and zone delineation allowed for separated fermentation for at least two wine styles. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: NIR spectroscopy; Grape; Wine. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200003 |
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| Nascimento,Carlos; Magalhães,Danielly de Paiva; Brandão,Martha; Santos,André Batouli; Chame,Marcia; Baptista,Darcílio; Nishikawa,Marília; Silva,Manuela da. |
| The aim of this work was to study the degradation and detoxification of three textile azo dyes (Reactive Red 198, Reactive Red 141 and Reactive Blue 214) by mixed fungal cultures from semi-arid region of Brazilian Northeast. Sediment samples of twenty water reservoirs in the surroundings of Serra da Capivara National Park, area of environmental preservation in the caatinga in the State of Piauí, with semi-arid climate, were evaluated in order to select the consortia of fungi capable to degrade and detoxify these dyes. The mixed fungal culture from Caldeirão Escuridão (CE) reservoir was the most efficient in the degradation and detoxification of the dyes tested. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungi; Mycoremediation; Azo dyes; Degradation; Detoxification. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000300024 |
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| Registros recuperados: 2.860 | |
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