999 resultados para Azadirachta indica A. Juss.


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The effects of aluminum (Al) on the activities of antioxidant enzymes and ferritin expression were studied in cell suspension cultures of two varieties of Coffea arabica, Mundo Novo and Icatu, in medium with pH at 5.8. The cells were incubated with 300 µM Al3+, and the Al speciation as Al3+ was 1.45% of the mole fraction. The activities of superoxide dismutase (SOD), catalase (CAT), and glutathione S-transferase (GST) were increased in Mundo Novo, whereas glutathione reductase (GR) and guaiacol peroxidase (GPOX) activities remained unchanged. SOD, GR, and GST activities were increased in Icatu, while CAT activity was not changed, and GPOX activity decreased. The expression of two ferritin genes (CaFer1 and CaFer2) were analyzed by Real-Time PCR. Al caused a downregulation of CaFER1 expression and no changes of CaFER2 expression in both varieties. The Western blot showed no alteration in ferritin protein levels in Mundo Novo and a decrease in Icatu. The differential enzymes responses indicate that the response to Al is variety-dependent.

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PURPOSE: To verify perceptions and conduct of students with visual impairment regarding devices and equipment utilized in schooling process. METHODS: A transversal descriptive study on a population of 12-year-old or older students in schooling process, affected by congenital or acquired visual impairment, inserted in the government teaching system of Campinas during the year 2000. An interview quiz, created based on an exploratory study was applied. RESULTS: A group of 26 students, 46% of them with low vision and 53.8% affected by blindness was obtained. Most of the students were from fundamental teaching courses (65.4%), studying in schools with classrooms provided with devices (73.1%). Among the resources used in reading and writing activities, 94.1% of the students reported they used the Braille system and 81.8% reported that the reading subject was dictated by a colleague. Most of the students with low vision wore glasses (91.7%), and 33.3% utilized a magnifying glass as optical devices. Among the non-optical devices, the most common were the environmental ones, getting closer to the blackboard (75.0%) and to the window (66.7%) for better lighting. CONCLUSIONS: It became evident that students with low vision eye-sight made use of devices meant for bearers of blindness, such as applying the Braille system. A reduced number of low vision students making use of optical and non-optical devices applicable to their problems were observed, indicating a probable unawareness of their visual potential and the appropriate devices to improve efficiency.

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas. Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas. Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas. Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas. Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física

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Universidade Estadual de Campinas . Faculdade de Educ§Ã£o Física