• The Journal of Korean Medicine
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• v.22 no.4
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• pp.22-28
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• 2001

흰쥐의 난소 절제로 야기된 골손실에 미치는 골쇄보의 영향을 관찰하였다. 난소 절제 후 흰쥐의 체중은 증가하고 자궁의 무게는 감소하였는데, 골쇄보는 특별한 영향을 주지 않았다. 그러나, 난소 절제 후 흰쥐의 tibia에서 측정한 골밀도는 대조군에 비하여 22% 감소되었으나, 골쇄보와 17be1a-estradiol를 투여한 경우는 골밀도의 감소가 현저히 억제되었다. 난소를 절제한 실험군에 골쇄보와 17be1a-estradiol를 투여하고 전자 현미경으로 관찰한 결과, trabecular bone의 미세분자 표면이 보호되는 것으로 관찰되었다. 이러한 결과들을 볼 때, 골쇄보가 17be1a-estradiol 만큼 난소 절제술 후 진행되는 골손실을 예방하는데 효과적임을 강하게 나타내고 있다고 사료된다.

• Korean Journal of Poultry Science
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• v.41 no.1
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• pp.21-27
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• 2014

To preserve chicken genetic materials like cryopreserved spermatozoa, various kinds of freezing agents like glycerol, dimethylsuloxide, dimethylformamide or dimethylacetamide have been used for rooster semen preparation. Recently, the usage of N-methylacetamide (MA) for Ogye rooster semen preservation resulted in hatched chicken successfully. In this study, we investigated the effects of 7, 9 and 11% of MA on the viability, fertility and hatchability of frozen-thawed rooster semen using artificial insemination. The results of viability, fertility and hatchability in frozen semen with 7%, 9% or 11% MA were $35.16{\pm}6.12%$, $67.83{\pm}15.3%$ and $66.2{\pm}16.3%$ of motile sperm rate, 21.5%, 34.7% and 25% of fertility rate, and 100%, 89.5% and 87.5% of hatchability rate. The results of control group with frozen semen were 96.0% of fertility rate and 92.2% of hatchability rate. With these results, the concentration range of MA as a freezing agent of rooster semen could be 7~9% of media. The higher concentration of 9 % MA could decrease the fertility rate of thawed semen not the rate of hatchability rate. So the use of MA without affecting fertility rate would be a key point of freezing method of rooster semen for poultry genetic resource preservation.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.11
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• pp.2427-2432
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• 2009

This paper proposes an monitoring system of elder and feeble person's motion activity using an object's motion activity data. The proposed system used wireless 3-axis sensor module, product by Freescale(Wireless Sensing Triple Axis Reference Design Board (ZSTAR)). We distribute sensing data into three classes using Neural Network System SVM. We find performance of proposed system that simulate some case about walk, past walk, fallen. Classify result data and graph of sensing data present succes rate 80%.

• Korean Journal of Environment and Ecology
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• v.8 no.2
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• pp.81-92
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• 1995

The flora of the Chuwangsan National Park was surveyed. The field works was done for three times from February to October, 1994. The total number of vascular plants in this area were surveyed as 433 taxa ; 94 families, 260 genera, 365 species, 60 varieties, 2 subspecies, 5 formas, and 1 cultivars. The twenty seven taxa which were artificially planted could be found at the temple and abandoned cultivated areas. The population of Jeffersonia dubia Benth, one of the rare and endangered plants in Korea, were surveyed and mapped for an ecological monitorings in the future. Since this population is restrictly located in the vicinity of the mountain trails, the protection measures should be urgently needed in the future.

• Journal of Radiation Protection and Research
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• v.13 no.1
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• pp.21-30
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• 1988

The 6 MV photon beam of a linear accelerator (Mevatron 67) was studied for electron contamination. The surface dose, attributable almost entirely to contamination electrons, has a linear dependence on field width for square fields and an inverse square dependence on distance from the bottom of the fixed head assembly. Build-up and surface dose measurements were taken with and without an acrylic blocking tray in place. Further measurements were made with a copper filter designed to reduce secondary electrons emitted by photon interactions with the acrylic tray. The results are discussed in relation to skin sparing effect for radiation therapy patients. To achieve the maximum skin sparing effect, the selection of the optimum SSD and TSD is needed.

• Transactions of the Korean hydrogen and new energy society
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• v.17 no.2
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• pp.181-192
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• 2006

PEC전지 전극으로 사용될 수 있는 CdSe는 수용액상에서 광부식이 심하기 때문에 투명한 보호막이 필요하다. TiO2는 광부식이 심한 광전극의 보호막으로 적당하며 이 논문에서 화학적 방법(전기증착과 화학조증착)을 이용하여 산성용액이나 알칼리용액에서 TiO2 박막을 제조하여 광흡수나 광전류를 측정하였다. XRD를 이용해서 제조된 TiO2 박막의 결정성을 확인하였으며 막의 표면특성은 SEM으로 측정하였으며 광흡수 특성이 관찰되었다. 제조된 TiO2 박막의 광전류는 100 mw/cm2의 광세기를 가지는 제논 램프를 이용하여 측정하였다. CdSe에 TiO2박막을 코팅했을 때의 CdSe막의 광흡수와 광전류를 측정하여 TiO2 코팅효과를 관찰하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.565-568
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• 2009

This paper proposes an monitoring system of elder and feeble person's motion activity using an object's motion activity data. The proposed system used wireless 3-axis sensor module, product by Freescale(Wireless Sensing Triple Axis Reference Design Board (ZSTAR)). We distribute sensing data into three classes using Neural Network System SVM. We find performance of proposed system that simulate some case about walk, past walk, fallen. Classify result data and graph of sensing data present succes rate 80%.

• Journal of Preventive Medicine and Public Health
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• v.22 no.2 s.26
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• pp.208-214
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• 1989

The protective effects of Panax Ginseng extract to oxygen toxicity of mice were studied under 5 ATA hyperbaric oxygen atmosphere. The findings observed are as follows: 1) Administration of Ginseng water extract manifested the prolonging survival time of mice to oxygen toxicity by hyperbaric oxygen atmosphere. After 18 hours of single Ginseng water extract administration and three days, seven days of consecutive Ginseng water extract administration showed the protective effect against oxygen toxicity. 2) Three days and seven days of consecutive Ginseng water extract administration showed the more efficient protective effect than single Ginseng Water extract administration. 3) Seven days of consecutive Ginseng water extract administration did not showed the more efficient protective effect than three days of consecutive Ginseng water extract administration.

• Tuberculosis and Respiratory Diseases
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• v.59 no.3
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• pp.272-278
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• 2005

Background : The immune responses mediated by CD8+T cells are known to be significant in controlling M. tuberculosis infections. In order to determine the role of cytotoxic CD8+T cells in the protective immune mechanism in latently infected subjects, this study examined whether or not the cytotoxic immune responses of CD8+T cells specific to the M. tuberculosis somatic antigens are induced in BCG vaccinated healthy subjects. Methods : Cytotoxicity and $IFN-{\gamma}$ elispot assays were used to investigate the activities of CD8+T cells specific for the $thyA_{30-38}$ peptide epitope in circulating peripheral blood mononuclear cells (PBMC) from BCG-vaccinated HLA-A*0201 and A*0206 subjects. Results : The results indicate the cytotoxic and $IFN-{\gamma}$ immune responses of CD8+T cells specific for $thyA_{30-38}$ were induced in BCG vaccinated healthy subjects. Conclusion : The cytotoxic and $IFN-{\gamma}$ responses by CD8+T cells specific for the M. tuberculosis somatic antigens are induced in BCG-vaccinated subjects, and appear to be involved in the protective immune mechanism in latently infected people against a M. tuberculosis infection.

• Korean Journal of Food Science and Technology
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• v.46 no.5
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• pp.601-608
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• 2014

In this study, we investigated the antioxidant activity of green kohlrabi juice (GKJ) and purple kohlrabi juice (PKJ) using various in vitro methods. The results of 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging activities, ferric ion reducing antioxidant power (FRAP), reducing power, and nitrite scavenging activities showed that GKJ possessed higher antioxidant activity than PKJ. Green kohlrabi powder (GKJP) and purple kohlrabi powder (PKJP) inhibited hydrogen peroxide-induced cell death in human dermal fibroblasts. In addition, GKJP and PKJP suppressed intracellular reactive oxygen species (ROS) production induced by hydrogen peroxide in human dermal fibroblasts. These results suggest that green and purple kohlrabi juices are potential natural sources of antioxidants.