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대학 축구선수의 항산화 물질 정맥투여가 근 손상 회복능력 및 실험관 반응에 미치는 영향
곽정자(Jung-Ja Kwak),최현민(Hyun-Min Choi),김효철(Hyo-Chul Kim),정재우(Jae-Woo Chung),김종경(Jong-Kyung Kim),노호성(Hosung Nho) 한국생활환경학회 2012 한국생활환경학회지 Vol.19 No.2
This study was designed to investigate cardiovascular responses and the recovery from muscle damage after the anti-aging intravenous therapy (AAIT) (once in 2 days, total 14 treatments) in 10 college soccer players. The hemodynamic responses and muscle damage fatigue factors were assessed before and after the AAIT treatment. Muscle damage was induced with 50 min downhill running at the intensity of 75% of VO₂max). The cardiovascular responses were measured by a non-invasive device Physio flow during exercise. After the treatment, There were no statistical differences in the levels of both La and VO₂max levels, while the rapid recovery occurred in the level of the GOT, CK, and ammonia compared to before the treatment (from 30.1±3.01 to 23.7±2.22 U/L; from 277±36.92 U/L to 174.2±40.8 U/L; 113.0±6.13 ug/dL to 75.2±2.92 ug/dL, respectively). Total vascular conductance, stroke volume, and cardiac output were significantly improved after the MIT treatment. Thus, the results indicated that the AAIT treatment may increase oxygen delivery to active skeletal muscle and improve the recovery from muscle damage. Our study suggests that the AAIT treatment could enhance exercise performance and intervene muscle damage in athletes during intense exercise.
잉크젯 프린팅 방식으로 형성된 구리 배선의 전기적 특성 평가
김광석,구자명,정재우,김병성,정승부,Kim, Kwang-Seok,Koo, Ja-Myeong,Joung, Jae-Woo,Kim, Byung-Sung,Jung, Seung-Boo 한국마이크로전자및패키징학회 2010 마이크로전자 및 패키징학회지 Vol.17 No.3
직접인쇄기술 방식은 기존의 포토리소그래피 방법을 이용한 패터닝 기술에 비해 저비용, 간단한 공정 과정, 친환경성 등 여러 장점들로 인해 미세 회로 형성 분야의 그린 테크놀로지로 최근 각광받고 있다. 이러한 프린팅 기반의 전자기술을 상용화하기 위해서는 프린팅 방식으로 형성된 회로의 전기적 특성 평가가 필수적인데, 이에 본 연구에서는 구리 잉크를 이용하여 잉크젯 프린팅 방식으로 2 가지 타입, parallel transmission line(PTL)과 coplanar waveguide(CPW) 구조의 회로를 형성하고 $250^{\circ}C$에서 30분 동안 소결하여 완성하였다. 전류-전압 그래프로 직류 저항을 측정하여 벌크 구리의 비저항 값의 약 3.3배되는 평균 0.558 ${\mu}{\Omega}{\cdot}cm$의 비저항 값을 도출하였고 회로의 고주파 특성 평가를 위해 주파수 범위 0~30 GHz에서 probe station chuck과 샘플 간의 갭 유무에 따른 scattering parameter를 측정하였다. 모든 시편에서 5 dB 이하의 반사 특성을 보였으며, PTL 회로가 CPW 구조보다 전반적으로 더 좋은 통과 특성을 나타내었다. Direct printing technology is an attractive metallization method, which has become immerging as "Green technology" to the conventional photolithography, on account of low cost, simple process and environment-friendliness. In order to commercialize the printed electronics in industry, it is essential to evaluate the electrical properties of conductive circuits using direct printing technology. In this contribution, we focused on the electrical characteristics of inkjet-printed circuits. A Cu nanoink was inkjet-printed onto a Bisaleimide triazine(BT) substrate with parallel transmission line(PTL) and coplanar waveguide(CPW) type, then was sintered at $250^{\circ}C$ for 30 min. We calculated the resistivity of printed circuits through direct current resistance by the measurement of I-V curve: the resistivity was approximately 0.558 ${\mu}{\Omega}{\cdot}cm$ which is about 3.3 times that of bulk Cu. Cascade's probe system in the frequency range from 0 to 30 GHz were employed to measure the Scattering parameter(S-parameter) with or without a gap between the substrate and the probe station chuck. The result of measured S-parameter showed that all printed circuits had over 5 dB of return loss in the entire frequency range. In the curve of insertion loss, $S_{21}$, showed that the PTL type circuits had better transmission of radio frequency (RF) than CPW type.
양민석 ( Min-suk Yang ),반가영 ( Ga-young Ban ),김민혜 ( Min-hye Kim ),임경환 ( Kyung-hwan Lim ),권혁수 ( Hyouk-soo Kwon ),송우정 ( Woo-jung Song ),정재우 ( Jae-Woo Jung ),이정민 ( Jeongmin Lee ),서동인 ( Dong In Suh ),권재우 ( Ja 대한천식알레르기학회 2017 Allergy Asthma & Respiratory Disease Vol.5 No.5
Diagnostic methods for drug allergy include the patient’s history, in vivo skin test, in vitro laboratory test, and provocation test. How-ever, the history is often not reliable, procedures for in vivo and in vitro tests are not standardized, and provocation tests are some-times harmful to patients. Generally, skin prick and intradermal tests are useful for immediate reactions; in contrast, patch test and delayed reading of both skin prick and intradermal tests are helpful for delayed reactions. A drug provocation test is the gold stan-dard for both responses, and it is necessary to be aware of exact indications and contraindications with appropriate drugs, doses, and intervals. To date, several methods have been developed to detect culprit agents for drug hypersensitivity reactions, but they are neither completely well validated nor standardized. Based on this awareness and necessity, the Korean Academy of Asthma, Al-lergy and Clinical Immunology launched the Standardization Committee to review the international guidelines and the literature, and then developed the consensus report on the procedures and applications of diagnostic tests for drug allergy. (Allergy Asthma Respir Dis 2017;5:239-247)
비소세포폐암주에서 저산소상태에 의해 유발된 HIFa-1α와 VEGF의 발현증가에 미치는 Epigallocatechin-3-gallate의 억제 효과
송주한 ( Joo Han Song ),전은주 ( Eun Joo Jeon ),곽희원 ( Hee Won Kwak ),이혜민 ( Hye Min Lee ),조성근 ( Sung Gun Cho ),강형구 ( Hyung Koo Kang ),박성운 ( Sung Woon Park ),이재희 ( Jae Hee Lee ),이병욱 ( Byung Ook Lee ),정재우 ( Ja 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.66 No.3