• Microbiology and Biotechnology Letters
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• v.44 no.3
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• pp.261-267
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• 2016

The present study examined the effect of the dietary administration of a halophilic bacterium Bacillus sp. Mk22 on the growth improvement of black tiger shrimp, Penaeus monodon, and reduced shrimp infection by Vibrio parahaemolyticus and white spot syndrome virus (WSSV). The shrimp were fed 45 days using three experimental diets: no addition (control), commercial probiotic, and Bacillus sp. Mk22. The shrimp treated with the halophilic bacterium Mk22 showed a significant improvement of growth (7.1 ± 0.21 g), survival (94.3 ± 0.58%), weight gain (178 ± 4.93 g), and reduced feed conversion rate (0.8 ± 0.03 g) compared with the shrimp in the other groups. The shrimp treated with Bacillus sp. Mk22 also showed a lower Vibrio count (0.02 ± 0.01 × 10² CFU/ml) in the shrimp culture water compared with the other groups. The shrimp in the three groups were challenged with either Vibrio or WSSV. For the Vibrio infection, no mortality was observed from water infection or oral feeding infection in the commercial probiotic group and Mk 22 group. For the WSSV infection, a 68% survival rate from water infection and 20% survival rate from oral feeding infection was observed on day 45 in the Mk22 group, while 100% mortalities were recorded at a much earlier time in both the control and commercial probiotic groups. The antioxidant enzyme activities, indicators of oxidative stress, such as catalase and superoxide dismutase, significantly decreased in both the Vibrio and WSSV-infected Mk22 groups compared with the other groups, indicating that Bacillus sp. Mk22 was effective in reducing oxidative stress, possibly due to the reduced infection.

• Journal of the Korean Applied Science and Technology
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• v.35 no.1
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• pp.43-54
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• 2018

The purpose of this study is to observe how Panax Notoginseng Flos Ethanol Extract has anti-oxidant activity, cytotoxicity for skin cells, and anti-inflammatory effects and Cosmetics Panax Notoginseng Flos Ethanol Extract was applied to acne skin to analyze moisture, erythema, pores, and blackberries to identify potential as cosmetics material .According to the analysis, Panax Notoginseng Flos Ethanol Extract was found to have high contents of polyphenols and flavonoids and excellent DPPH radical scavenging activity. The extract had no significant cytotoxicity for Raw 264.7 cell and significantly inhibited the creation of NO induced LPS in Raw 264.7 cell so as to present anti-inflammatory effect. After applying an Panax Notoginseng Flos Ethanol Extract of 3% skin toner and spot Solutions to the skin of the skin of the acne for 3 weeks, Increased skin moisture, erythema, pores, black head count were found to be statistically signigicant, and reduced red spots were found in skin condition questions following management. Given the results, it is considered that Panax Notoginseng Flos Ethanol Extract is applicable as the ingredient of a functional cosmetic product that has low cytotoxicity for skin cells, high anti-oxidant activity, anti-inflammatory effect, and acne improvement effect.

• Journal of Radiation Protection and Research
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• v.36 no.4
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• pp.216-222
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• 2011

Lab effectively supplemented the effects of outside radiation on image plates in the process of image acquisition of CR (computed radiography) systems and conducted for effective utilization in the case of clinical application. For this, Lab classified the storage places and time periods of image plates and compared and analyzed the differences between small dark spots. Lab also assessed the concentration distribution within the boundaries of images. Lab compared and measured the number of dark spots in a light room and a dark room depending on the storage places of image plates and found that dark spots slightly increased in an image plate when stored in a light room on the first and second days. Dark spots increased in proportion to the length of time stored. In the case of the image plate stored in a dark room, the number of dark spots remarkably decreased. With regard to picture quality as related to the location of image plates, the damage to picture quality could be reduced by locating regions of interest in the center. With regard to differences in sharpness following changes in the thickness of subjects, fewer scatter rays occurred and sharpness improved by reducing the thickness of subjects as much as possible. To get medical images of excellent quality, image plates should be managed effectively and it is desirable to keep images plates in dark iron plate boxes and not to expose them to outside radiation for a long time.