• Korean Journal of Oriental Medicine
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• v.12 no.1
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• pp.91-102
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• 2006

We treated KunYangDan (KYK) in SD rats in order toexamine the protective effect against cell damage induced by diethylhexyl phthalate (DEHP). KYD reduced DEHP toxicity by increasing the function of immune cell numbers weight increase of spleen.red blood cells,HB,and HCT content,sperm number and mobility,resulting in improving reproductive function by judging from the recovery of testosterone content. Interestingly the hormone change of testosterone by KYD significantly recovered the decreased its leve. Taken together,these results suggest that KYD specifically affect the reproductive function induced by DEHP,an endocrine disruptor.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2004.04b
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• pp.191-194
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• 2004

본 연구에서는 광 스케너 반사경(mirror)의 torsion bar모양을 변화시키고, 반사경 밑 양단에 magnet를 장착시켜 낮은 구동전압에서 동작되게 함으로써 Scanner의 효율을 개선하였다. torsion bar의 모양은 I형에서 S형 타입으로 변화시킴으로써 일반적인 광 스케너의 공진주파수(50Hz)보다 낮은 주파수(35.8Hz)에서 높은 반사각(약$10^{\circ}$)을 얻을 수 있었다. 또한 광 스케너에 일반적으로 사용되는 정전 액튜에이터 대신 자기 액튜에이터를 사용함으로써 공기 중의 먼지나 습기 등 외부요인을 감소시켰다.

• Journal of Convergence for Information Technology
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• v.7 no.5
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• pp.103-109
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• 2017

A pressure vessel is a cylindrical container that accommodates a pressurized fluid. In real life, there are propane canisters and butane canisters. According to data from the Korea Gas Safety Corporation, The number of domestic gas accidents is average 33 cases of domestic gas accidents occurred per year and 20.8 for mobile butane gases. The purpose of this study was to investigate a method to prevent this kind of explosion. Common studies include forced drain through safe holes, forced separation of butane canisters, and manufacturing of high-strength steel. This paper uses a concept that reduces stress inside the cylinder using prestressed method that precede compression. In other words, install a long liner in both ends of the pressure vessel. I want to develop a safety device that acts like a gas intermediate valve.

• THE JOURNAL OF KOREAN ORIENTAL ONCOLOGY
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• v.4 no.1
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• pp.55-70
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• 1998

It has been known that "Gobongeonyangdan" has a certain effects on male sterility in the field of oriental medicine. This thesis purposes to prove such effects of the medicine especially concerning sex hormones and hematogenesis. In the study were used three groups of rats: two of those were treated with Gobongeonyangdan with a variety of quantity and the other untreated. The experiment spans for 35 days: tests upon those subjects were done three times on the 7th, 21st, and 35th day checking the change of testosterone, estradiol, LH, FSH and iron in the serums, and RBC, hematocrit and hemoglobin levels. The results obtained from the study are as follows: 1. The content of testosterone in the serums marked a significant increase in both treated groups in comparison to the untreated group. 2. The content of estradiol in the serums showed a significant increase in the treated groups as to the untreated. 3. The content of LH in the serums increased significantly in the treated groups as to the untreated. 4. The content of FSH in the serums also increased remarkably in the two treated groups as to the untreated. 5. The content of iron in the serum was seen to be increased in the treated groups rather than the untreated group. 6. The RBC was observed to show a tendency toward a significant increase in both the treated groups in comparison with the untreated group. 7. The hemoglobin levels were also increased significantly in the treated groups as to the untreated. 8. The hematocrit levels were decreased significantly in one of the two treated group(sample A group) and there was no difference in the other group(sample B group) in comparison with the untreated group. Consequently, "Gobongeonyangdan" may well be a favorable medicine for patients two have sexual functional disorder and it is also effective on hematogenesis.