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이희민,김재현,이봉주,하태규,김흥곤,윤기중 圓光大學校 醫科學硏究所 1996 圓光醫科學 Vol.12 No.1
Mature cystic teratomas comprise 10% of all ovarian tumors and show the highest frequency of incidence in women under 20 years of age. Torsion of ovarian cyst is the most common complication in young female and lower abdominal pain, peritonitis, necrosis and shock are outcomes that require emergency treatment. Generally, gross finding of mature cystic teratoma shows that most of the entire ovary is replaced by multiple cystic masses, and rarely only small portion of the ovary is changed into cystic mass. We report a case of torsion of mature cystic teratoma in an 11 year old girl with a brief review of literature.
이민규,이두성,윤경일,김주봉 濟州大學校工科大學附屬産業技術硏究所 1992 尖端技術硏究所論文集 Vol.3 No.-
This study is to investigate the characteristics of products on mixing ratio of raw materials for scoria tile manufacturing. The water absoprtion of scoria tile decreased as scoria particle size decreased and a ratio of scoria/sand increased. And also thee water absoprtion of tile decreased as an amount of cement decreased. Smaller scoria particle size, smaller ratio of scoria and sand, and larger amount of cement enhanced strength and thermal conductivity of scoria tile. The surface pattern of scoria tile became various figures as a ratio of scoria and sand increased. Well mixing of large and small particles made surface pattern of tile diverse.
정신과 외래환자의 약물치료 반응과 심박동 변이의 변화 양상
이상규,이홍석,김인주,김형태,김도훈,손봉기 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.6
Objectives : The purpose of this study was to investigate the change of heart rate variability after antidepressant treatment in depressed or anxious patients. We tried to find the usefulness of heart rate variability as a predictive marker of response to pharmacological treatments in the psychiatric field. Methods : Forty-seven patients with major depression, anxiety disorder, and somatoform disorder were treated over 4 weeks with antidepressants and were then classified as responders or nonresponders according to Hamilton depression scales or CGI scores. The HRV variables were measured and compared among the responders/nonresponders and the matched normal control. Results : The responders group exhibited low heart rate, low PSI, high SDNN, RMSSD, HRV index, NN50, pNN50, LNTP, LNLF, and LNHF compared with the nonresponders after 4 weeks antidepressant treatment. However, no significant differencein HRV vanables was observed between the responders group after treatment and the nonnal control group and the responsegroup after treatment. Conclusion : These results indicate that HRV variables would are normalized after successful antidepressant treatment and it that HRV has some possible uses as a predicting marker of antidepressant response.
이민규,윤경일,이두성,김주봉 濟州大學校 工科大學 産業技術硏究所 1992 産業技術硏究報告 Vol.3 No.-
This study is to investigate the characteristics of products on mixing ratio of raw materials for scoria tile manufacturing. The water absoprtion of scoria tile decreased as scoria particle size decreased and a ratio of scoria/sand increased. And also the water absoprtion of tile decreased as an amount of cement decreased. Smaller scoria particle size, smaller ratio of scoria and sand, and larger amount of cement enhanced strength and thermal conductivity of scoria tile. The surface pattern of scoria tile became various figures as a ratio of scoria and sand increased. Well mixing of large and small particles made surface pattern of tile diverse.
유연성을 갖는 분산 해쉬 테이블 기반의 피어 투 피어 인터넷 텔레포니 서비스의 구현
이주호,김재봉,정충교 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.B
Internet telephony provides voice communication services with added flexibility for multimedia extension at a lower cost compared to traditional telephone systems. We implemented an internet telephony system as an overlay network without a centralized server, using a distributed hash table (DHT). Compared to the current server-based internet telephony system, our system is fault-tolerant, scalable, and can be flexible extended to various services and advanced to integrated service. To demonstrate the high flexibility of our DHT-based internet telephony system, we made our system cooperate with web servers. Web users can check up others online states and establish voice communication sessions to online users at a mouse click. This technology can be tipplied to more complex services such as multimedia messaging or video conference service.
NTSC/PAL/SECAM 표준을 만족하는 Variable-clock Video Encoder의 내부 필터 설계
이성목,김주현,강봉순 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
In this paper, we present the design of the filters for variable-clock video encoder in CCTV system The SONY corporation preoccupies 80% of the CCD market in CCTV application. But, SONY corporation's CCD module used in CCTV requires particular clock frequency. Generally, a video encoder is operated 27MHz sampling frequency. That is clock frequency of video encoder different with CCD's clock frequency. If we used a filter of general video encoder, filter's characteristics are changed and don't be satisfied with standard. So, we design the filters that satisfied with TV broadcasting standards without regard to clock frequency. The proposed filters are simulated by using the MATLAB. This paper also proposes the variable-clock encoder that can be activated at the clock equal to the CCD clock without the scaler and the PLL.
이희봉,정재영,최현구,김기훈,김효기,주정일 충남대학교 농업과학연구소 2001 농업과학연구 Vol.28 No.2
재래종 찰옥수수 F₁ 교잡종에 대한 생육 및 수량비교를 위해 충남대학교 농과대학 실험포장에서 육성한 이들 교잡종의 식물학적 특성에 대한 연구 결과는 다음과 같다. 1. 간장은 대조구에 비해 대학찰×재래찰, FR805/1K₃×고령찰이 가장 크게 나타났으나, FR805/1K₃×대학찰, 찰옥 1호에서 대조구와 비슷하게 나타내었다. 2. 착수수는 간장에서와 마찬가지로 대학찰×재래찰, FR805/1K₃×고령찰이 대조구보다 높게 나타났으나 대학찰×재래찰, 찰옥 1호는 비슷하였다. 3. 분얼수는 각 교잡종들간에 큰 차이가 없었다. 4. 이삭의 길이는 대조구에 비해 교잡종들이 거의 2배이상의 크기를 나타내었다. 5. 이삭직경은 FR805/1K₃× 고령찰의 교잡종을 제외하고 대조구와 비슷하게 나타났다. 6. 이삭열수는 Daehakchal×1K₁/LE만이 대조구와 유의성을 나타내고 기타 교잡종은 대조구와 비슷하였다. In order to evaluate the characteristics of growth and yield in F_(1) waxy hybrids using Korean local maize lines, six hybrids including check, Chalok # 1, were planted at the experinental field of e Chungnam National University. Stem and ear heights of Yeonnong × Jaerae and FR805/IK_(3) × Koryong hybrids were higher than the check hybrid. Number of fillers per plant in all hybrids were similar as 0.3 to 0.5 per plant Ear length of waxy hybrids was longer than 15㎝ of check hybrid and ear diameter was also thicker than check except FR805/IK_(3) × Koryong waxy hybrid. A final result, Yeonnong × Jaerae among hybrids was comparatively superior to other hybrids in the test.
이봉섭,주재현 三陟大學校 産業科學技術硏究院 2005 産業科學技術硏究論文集 Vol.10 No.-
If obstacle in power supply, its affects are great are on the community and it is consequently demanded lots of difficulties to recover and repair. Accordingly, diagnosis techniques, that are able to prevent from accidents before they happen by providing more stable and highly reliable power effectively and finding sign of the accidents, is very, important. A novel Ultra Wide Band microstrip-fed circular patch antenna i presented. The measured impedance bandwidth of the proposed antenna is from 0.5[GHz] to 2.5[GHz] with the stop band from 0.5[GHz] to 1.7[GHz] for VSWR<2. Form results of this study, The antenna is will play an important role for the sensor for insulation diagnosis system by UHF method of real site GIS and power equipment using SF_(6) gas.