• The Journal of Korean Medicine
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• v.18 no.1
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• pp.344-356
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• 1997

This experiment was performed in order to study the clinical effect of Sojadodamgangkitang on the pulmonary injury caused by $SO_2$. Healthy adult male rats weighing about 250g were divided into 4 groups-the Normal group, the Control group, the group of Sojadodamgangkitang administration for 5 days after $SO_2$ gas exposure(Sample I), and the group of Sojadodamgangkitang administration for 10 days before and for 5days after $SO_2$ gas exposure(Sample II). The results were obtained as. follows; 1. In comparison with Control group, Sample I and Sample II were revealed significant effect on the total number of leucocyte. 2. In comparison with Control group, Sample I and Sample II were revealed significant effect on. the erythrocyte sedimentation rate. 3. In the effect on the lung weight, Sample I and Sample II were revealed significantly. 4. In the effect on the lung TBA level, only Sample II was revealed significantly. 5. In the effect on the tracheal glycoprotein level, Sample I and Sample II were revealed significantly. According to above results, Sojadodamgangkitang had significant effect on the pulmonary injury caused by $SO_2$ in rats.

• Advances in aircraft and spacecraft science
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• v.1 no.3
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• pp.353-378
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• 2014

This paper deals with the early development of the Anuloid, an innovative disk-shaped VTOL aircraft. The Anuloid concept is based on the following three main features: the use of a ducted fan powered by a turboshaft for the lift production to take-off and fly; the Coanda effect that is developed through the circular internal duct and the bottom portion of the aircraft to provide further lift and control capabilities; the adoption of a system of ducted fixed and swiveling radial and circumferential vanes for the anti-torque mechanism and the flight control. The early studies have been focused on the CFD analysis of the Coanda effect and of the control vanes; the flyability analysis of the aircraft in terms of static performances and static and dynamic stability; the preliminary structural design of the aircraft. The results show that the Coanda effect is stable in most of the flight phases, vertical flight has satisfactory flyability qualities, whereas horizontal flight shows dynamic instability, requiring the development of an automatic control system.

• Journal of Acupuncture Research
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• v.23 no.4
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• pp.115-121
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• 2006

Objectives : This study was designed to investigate the scavenging effect on Nitric Oxide of BUM. Methods : The scavenging effect on NO concentrations 2, 6, 12 and 24 hours after treatment with Vit C. and BUM at 1, 10, $100{\mu}g/ml$ were estimated. And those was compared with control group. Results : 1. The concentration of NO 2 hours after treatment with BUM at 1, 10, 1$100{\mu}g/ml$ were decreased compared with control group. 2. The conecntration of NO 6 hours after treatment with BUM at 1, 10, 1$100{\mu}g/ml$ were decreased compared with control group. 3. The concentration of NO 12 hours after treatment with BUM at 1, 10, $100{\mu}g/ml$ were decreased compared with control group. 4. The concentration of NO 24 hours after treatment with BUM at 1, $100{\mu}g/ml$ were decreased compared with control group. Conclusion : The scavenging effect of BUM on NO was dose-dependent.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.54 no.7
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• pp.366-374
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• 2005

The purpose of this study is to find out main factors affecting public enterprise's environment , which improves the performance of public enterprise. In detail, under the premises of keeping publicity in Korea Electricity Industry, the main target of this study is to seek after factors enhancing entrepreneurship and deals with publicity which is related with entrepreneurship. Questionnaires are distributed to the employee of public enterprise, public servants, and civil corps. A total of 553 copies are collected. The main contents of questionnaires are related with the effect of publicity and entrepreneurship by government control, competitive environment and shareholding structure in Korea Electricity Power Corporation(KEPCO). The results of this survey are as follows : First government control is negatively related to the entrepreneurship while it is positively related to the Publicity. Second, this suey shows that competitive environment has a Positive influence on promoting both publicity and entrepreneurship. Third this survey in connection with shareholding structure indicates that present structure in KEPCO has a positive effect on publicity but negative effect on entrepreneurship. According to this empirical results, it is verified that the main issues on the performance of KEPCO ue related with the level of government control and competitive environment in its industry.

• Journal of the Korean Society of Food Science and Nutrition
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• v.27 no.6
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• pp.1189-1196
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• 1998

The antiatherogenic effect of kimchi ingredients was studied in terms of antioxidative effect against Newzealand white rabbits that fed 1% cholesterol. Experimental groups was fed 8% Baechu (Brassica pekiinensis), or 1% red pepper(Capsium annum), or 1% garlic(Allium sativum) for 12 weeks. Blood samples were drawn every 2 weeks to analyze vitamin E, POV, and TBARS. Hepatic antioxidative enzyme activity, vitamin E, and carotene concentration also were measured. Plasma TBARS and POV level were markedly lowered in both red pepper and garlic fed rabbits(p<0.05) compared to control. Hepatic POV and protein carbonyl values were lowered in the rabbits fed kimchi ingredients compared to control(p<0.05). Plasma vitamin E concentration was increased in the rabbits fed red pepper and garlic compared to control(p<0.05). Hepatic vitamin E concentration was increased in red pepper and garlicfed rabbits compared to control. For the hepatic antioxidative enzyme acitivity, catalase activity was significantly increased in red pepper and garlic fed rabbits compared to control. Therefore, Baechu, red pepper, and garlic exert an antioxidative effect against rabbits fed 1% cholesterol for 3 months.

• The Journal of Pediatrics of Korean Medicine
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• v.8 no.1
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• pp.27-37
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• 1994

This Experimental study was done to investigate the effect of the Taklisodok-um on the Anti-allergic response. The results were obtained as follows: 1. On vascular permeability response to the intradermal injected Histamine, the Taklisodok-um treated group revealed more significant decrease than control group. 2. On vascular permeability response to the intradermal injected Serotonin, the Taklisodok-um treated group revealed more significant decrease than control group. 3. In the 48hrs homologous passive cutaneous anaphylaxis provoked by the IgE-like antibody against white egg albumin, there was no significant difference between the Taklisodok-um treated group and control group. 4. The Taklisodok-um treated group revealed more significant inhibitory effect than control group in the delayed type hypersensitivity response to Picryl chloride. 5. The Taklisodok-um treated group revealed more significant inhibitory effect than control group in the delayed type hypersensitivity response to SRBC. According to the above-stated results, it is considered that the Taklisodok-um could be applied widely to the type I and IV allergic diseases.

• Korean Journal of Child Studies
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• v.32 no.5
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• pp.49-65
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• 2011

The purpose of this study was to investigate the structural relationship between the related variables of children's internalization and externalization of problems. A total of 709 elementary school students residing in Daegu City and Kyungpook province completed questionnaires which assessed family interaction functions, emotional regulation, self-control, and internalization and externalization of problems. The sample variance-covariance matrix was analyzed using AMOS 19.0, and a maximum likelihood minimization function. Goodness of fit was evaluated using the SRMS, RMSEA, and its 90% confidence interval, CFI, and TLI. The results were as follows : First, the function of family interaction, and emotional regulation had a significant direct effect on the internalization of problems. Moreover, emotional regulation, self-control and internalization of problems had a statistically substantial direct effect on the externalization of problems. Second, family interaction functions did not have a statistically significant direct on children's externalization of problems, although it may well have an indirect effect on children's externalization of problems through emotional regulation and self-control. Finally, self-control did not enjoy a direct effect on children's internalization of problems.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.21 no.6
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• pp.506-513
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• 2011

This paper is concerned with a study on the control effect of the MR damper using the cutout piston. The MR damper has passive damping force by the oil pressure and controllable damping force by the magnetic effect. As the velocity of the MR damper's piston increases the passive damping force increases and the ratio of the controllable damping force to the total damping force is decreased. Consequently, the control performance of the MR damper is reduced according to the increase of the velocity. In this paper, the cutout piston concept is applied to the MR damper to improve MR damper's control performance by reducing the passive damping effect. The MR damper with the cutout piston has been designed and manufactured and its hydraulic and electromagnetic analysis has been performed to predict its performance. The control performances of the MR damper with the cutout piston are verified through the comparison of experiment results and simulation results.

• Journal of the Korea Safety Management & Science
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• v.20 no.3
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• pp.1-9
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• 2018

This study is intended to look into the effect of construction safety supervision system on risk control and reduction. To achieve this, a survey was carried out to 114 companies in construction, ordering, contract and management. The overall findings were as follows. The effect of construction safety supervision system on risk control and reduction showed that factors of supervision system, supervision cost and supervision method had a positive effect on risk control and reduction. And their perception of the introduction of safety supervision system in construction sites according to process showed that there was a difference between them according to the field of ordering, contract and supervision. There was the biggest difference between owner and contractor in double supervision system, but no difference between them in the perception of risk reduction. These results show that all ordering, contract and supervision are positively needed for the introduction of construction safety supervision. This means that there is a difference between owner and contractor in the perception of process according to system operation. All companies agree to system improvement by the settlement of safety supervision system for the prevention of safety accidents and safe construction, but the systematic complement of safety supervision is the burden of contractor. And there is a big difference between owner and contractor in the perception of responsibility and concern for cost burden.

• Journal of the Korean Society of Fashion and Beauty
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• v.5 no.4
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• pp.119-129
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• 2007

This study was designed to investigate what an effect Meridian massage widely practiced in the skin and fatness clinics gives to the control of women's lower body fatness. 8 woman students in the J beauty school in Seoul were selected as experimental group. After measuring their femoral or thigh circumference, 4 weeks of Meridian massage was practiced. Another 8 women who were not included in the experiment were selected as the control group. As the results of 4 week Meridian control on lower body fatness, P value of the variance analysis was over 0.05, meaning that there was not a statistical significance. But the measurement of femoral or thigh circumference decreased from 55.85 cm to 53.34 cm, indicating that more often Meridian massage was practiced, the more lower body fatness decreased. This suggests that Meridian massage gives a positive effect to lower body fatness control. In a survey after the experiment, more than 88% of the survey participants answered that Meridian massage was effective to removal of edema, decrease in thigh circumference, and deep sleep, indicating that satisfaction with Meridian massage was high. Based on the findings of this study, it is necessary to study further on quantifying the effect of Meridian massage, which is practiced just to control lower body fatness.