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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: SCIENTIA IRANICA
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی:
- انتشار مقاله: 24-02-1386
- نویسندگان: M.M. Alishahi,M.M. Alishahi,M.M. Alishahi
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Iron and Steel Society of Iran
- نوع مقاله: Journal Article
- کلمات کلیدی: Carbon nanotubes,composite coating,Corrosion resistance,Electroless plating
- چکیده:
- چکیده انگلیسی: In the present study, Ni-P-CNT composite coating was successfully fabricated via electroless plating. Scanning electron microscopy (SEM) was used to characterize the coatings. The effect of CNTs concentration in the bath on its content in the composite coatings was studied. Furthermore, the corrosion behaviour of the coatings with different contents of CNTs was evaluated using Tafel polarization and electrochemical impedance spectroscopy (EIS) methods in 3.5 wt.% NaCl aqueous solution at the room temperature. The results showed that the corrosion resistance of the Ni–P-CNT composite coatings was excellent in comparison with that of the Ni-P coatings and the content of incorporated CNTs played a key role in the passivation and corrosion resistance.
- انتشار مقاله: 15-04-1393
- نویسندگان: M. Alishahi,S. M. Monirvaghefi,A. Saatchi
- مشاهده
- جایگاه : پژوهشی
- مجله: Archives of Razi Institute
- نوع مقاله: Journal Article
- کلمات کلیدی: Medicinal herbs,Histopathology,Cineol,Oncorhynchus mykiss,Streptococcus iniae
- چکیده:
- چکیده انگلیسی: Some of the medicinal plants have antibacterial contents and appear to be proper alternatives for antibiotics in the treatment of streptococcal disease, which causes plenty of mortalities in fish farms annually. Therefore, this study investigated the therapeutic effect of Aloe vera and Salvia officinalis hydroethanolic extracts against Streptococcus iniae in rainbow trout. Plant extracts components were analyzed by Gas chromatography-mass spectrometry method and tested in vitro against S. iniae by disk diffusion assay. In in vivo, 480 rainbow trout (10±0.1 g) were distributed in 9 groups (with 3 replication), and all groups (except for the first group as the negative control that was injected with 100 µl of physiologic serum) were injected by 100 µl of LD50 (3.66×108.5CFU/ml) of S. iniae suspension, intraperitoneally. The fish of groups were treated by A. vera and S. officinalis extracts in doses 0 (positive control group was fed by commercial diet without plant extract), 0.5, 1, and 1.5% (supplemented diet) and 80 mg/kg body weight erythromycin for the next 10 days. At the end of the study period, tissue samples of the gills and livers of all groups were taken for the histopathological lesion assay. The results showed that A. vera and S. officinalis had antibacterial components as Cineol, and S. iniae was sensitive to both A. vera (MBC=4.067 mg/ml) and S. officinalis (MBC=5.185 mg/ml) extracts. At the end of the treatment period, there were no significant differences among erythromycin, A. vera (1.5%), and A. vera (1%) in terms of the mortality of the infected fish (P˂0.05). Moreover, A. vera (1.5%) showed a significantly lower mortality rate, compared to the positive control (P˂0.05). A. vera (1.5%) was the best group to moderate all histopathological lesions, compared to other groups. Accordingly, A. vera (1.5 %) is useful to treat streptococcosis (caused by S. iniae) and alter gill and liver histopathological lesions in rainbow trout.
- انتشار مقاله: 04-06-1397
- نویسندگان: A. A. Tafi,S. Meshkini,A. Tukmechi,M. Alishahi,F. Noori
- مشاهده