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프로필티오유라실 (Propylthiouracil)과 연관된 p-ANCA 양성 혈관염에 동반된 초점성 분절성 사구체 경화증
박윤경 ( Yoon Kyung Park ),윤여욱 ( Yeo Wook Yun ),성상석 ( Sang Suk Sung ),박의순 ( Ui Soon Park ),박성현 ( Sung Hyun Park ),우진현 ( Jin Hyun Woo ),박재일 ( Jae Il Park ),장선주 ( Sun Joo Jang ),한상웅 ( Sang Woong Han ),오영하 대한신장학회 2004 Kidney Research and Clinical Practice Vol.23 No.6
모노 펄스 레이더 센서용 직렬 급전 마이크로스트립 패치 배열 안테나 설계
박의순(Eui-Joon Park),정익수(Ik-Soo Jung) 한국전자파학회 2010 한국전자파학회논문지 Vol.21 No.11
본 논문에서는 직사각형 마이크로스트립 패치들로 구성된 테이퍼형 단일 배열 안테나를 사용하여, 모노 펄스레이더 센서 시스템에서 요구되는 합 및 차 패턴을 동시에 구현할 수 있는 방법을 제안한다. 우선 부엽 레벨(SLL) 제어 기법을 사용하여 모노 펄스 동작에 적용되는 기본 배열 계수 패턴과 해당 전압 가중치들을 합성하고, 이 가중치들로부터 패치들의 폭들을 결정하였다. 그리고 양 방향 직렬 급전 방식을 적용하고, 패치들 간의 연결선 길이들을 적절히 조절함으로써, 이 단일 배열 안테나는 위상 변위된 두 개의 빔을 형성하며, 이들은 180° 하이브리드 결합기의 역상 및 동위상 포트에서 각각 합 및 차 패턴을 합성시킨다. 9.5 ㎓에서 설계한 구조에 대한 시뮬레이션 및 실험 결과를 서로 비교함으로써 제안된 방법의 타당성을 보였다. In this paper, a method for simultaneously realizing the sum and difference patterns which are required in the monopulse radar sensor systems, is presented by using single taper array antenna with rectangular microstrip patches. The widths of patches are first determined by the voltage weights which are synthesized for the fundamental array factor patterns to be applied to the monopulse operation by using the sidelobe levels(SLLs) control technique. As the bi-directionally series-fed technique is applied and the lengths of connecting lines between patches are appropriately adjusted, the single array generates two phase-shifted beams which activates out-of-phase and in-phase ports of a 180° hybrid coupler to synthesize the sum and difference patterns. The simulated results on the configuration designed at 9.5 ㎓ are compared with measured results showing the validity of the proposed method.
강현주,이경희,조인성,박의순,Kang, Hyun-Ju,Lee, Kyung-Hee,Cho, In-Sung,Park, Soon-Eui 한국세라믹학회 2002 한국세라믹학회지 Vol.39 No.10
본 연구에서는 수중불분리혼화제로서 메칠셀룰로스계를 사용하였고 자체 개발한 멜라민유동화제의 수중불분리콘크리트에 대한 사용량을 5, 7, 9, 11 kg/$m^3$으로 첨가량을 달리하여 slump folw, flow loss, 응결사간, 탁도 및 pH, 압축강도, 수중/기중 압축강도비를 실험한 결과 수중불분리콘크리트의 물성이나 경제성등을 고려할 때 수중불분리콘크리트에서의 멜라민유동화제의 사용량은 약 9 kg/$m^3$인 것으로 나타났다. In this studies, methly celluloes was used as antiwashout admixture and when considering the physical properties and economical efficiencies of Underwater Concrete as the results of making an experiencing slump flow, flow loss, setting time, suspension and pH also compressive strength and underwater/an air compressive strength ratio according to the adding amount changes 5, 7, 9, 11 kg/$m^3$ to Underwater Concrete of melamine superplasticizer, the using amount of melamine superplasticizer in Underwater Concrete approximately represents 9 kg/$m^3$.
왕준광 ( Joon Kwang Wang ),박의순 ( Ui Soon Park ),이혜순 ( Hye Soon Lee ),엄완식 ( Wan Sik Uhm ),김태환 ( Tae Hwan Kim ),배상철 ( Sang Cheol Bae ),유대현 ( Dae Hyun Yoo ),안유헌 ( You Hern Ahn ),최윤영 ( Yun Young Choi ),주경빈 ( 대한류마티스학회 2004 대한류마티스학회지 Vol.11 No.4
Objective: Decrease in bone mineral density (BMD) occurs relatively early and is known to be correlated with disease activity in patients with ankylosing spondylitis (AS). We investigated BMD and its correlation factors in Korean patients with AS. Methods: Fifty patients with AS fulfilling modified New York criteria and age-, sex-, and body mass index-matched 100 normal controls were selected. Medical records were reviewed retrospectively. Lumbar and femur BMD was measured using a dual energy X-ray absorptiometry. Results: Both lumbar and femur BMD in patients with AS were significantly lower than BMD in control group. Although Bath ankylosing spondylitis disease activity index, C-reactive protein and erythrocyte sedimentation rate showed no correlation with BMD, lumbar BMD in patients with high disease activity in terms of inflammatory factors was significantly lower than that in patients with low disease activity. Conclusion: BMD in patients with AS was significantly lower than those in control group. Early detection and appropriate management will be necessary in patients with AS.