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김상헌,김경호,선종오,조영갑,정택형,김정현,이관희,Kim, Sanghaun,Kim, Gyeong-Ho,Sun, Jong-Oh,Cho, Yeong-Garp,Jung, Taeck-Hyung,Kim, Jung-Hyun,Lee, Kwan-Hee 한국압력기기공학회 2016 한국압력기기공학회 논문집 Vol.12 No.1
The Second Shutdown Drive Mechanism (SSDM) provides an alternate and independent means of reactor shutdown. The Second Shutdown Rods (SSRs) of SSDMs are poised at the top of the core by the hydraulic force driven from a hydraulic system during normal operation. The rods drop by gravity when a trip is commended by a Reactor Protection System, Alternate Protection System, Automatic Seismic Trip System or operator by means of power off solenoid valves of hydraulic system. This paper describes the test results of seismic qualification of a prototype SSDM hydraulic system to demonstrate that its structural integrity and operability (functionality) are maintained during and after seismic excitations, that is, an adequacy of the SSDM design. From the results, this paper shows that the SSDM hydraulic system satisfies all its design requirements without any malfunctions during and after seismic excitations.
심박변이도(HRV)에서 기능성 소화불량증과 기질성 소화불량증의 상관성 연구
김상헌,김효진,이수정,신철경,이상희,김원일,Kim, Sang-Heon,Kim, Hyo-Jin,Lee, Soo-Jung,Sin, Cheol-Kyung,Lee, Sang-Hee,Kim, Won-Il 대한한방내과학회 2008 大韓韓方內科學會誌 Vol.29 No.2
Objectives : This study was designed to research whether HRV can yield a suitable diagnosis for activity of autonomic nerve system on functional dyspepsia. Methods : The testing of HRV was carried out at the Oriental Medical Center of Dong-Eui University with the participation of 28 functional dyspepsia patients, 25 dyspepsia caused by organic disease patients and 33 control group people. We checked HRV of the three groups for 5 minutes and compared HRV index(frequency domain analysis: HF, LF, VLF, LF/HF Ratio, TP) between groups. Results were as follows : 1. In the frequency domain analysis, HF, LF, VLF, and TP were significantly lower than the control group in the functional dyspepsia patients and dyspepsia caused by organic disease groups. HF, LF, VLF, LF/HF ratio, and TP were not significantly different between functional dyspepsia group and dyspepsia caused by organic disease group. 2. Age in dyspepsia patient group was significantly higher than in the control group. 3. In the frequency domain analysis, LF, VLF, and TP were significantly lower in the functional dyspepsia group than the control group in age 20-30 years. HF, LF, VLF, LF/HF ratio, and TP were not significantly different between the control group and dyspepsia caused by organic disease group in ages 20-30 years. HF, LF, VLF, LF/HF ratio, and TP were not significantly different between functional dyspepsia group and dyspepsia caused by organic disease group in age 20-30 years. Conclusion : According to this study, autonomic nerve system and parasympathetic nerve system decreased more in the functional dyspepsia patient group compared with the control group.
단삼보혈탕가감과 침구치료를 통한 궤양성 대장염의 후유증에 대한 치험례 1례
김상헌,김효진,김정은,이상희,홍수현,김원일,Kim, Sang-Heon,Kim, Hyo-Jin,Kim, Jung-Eun,Lee, Sang-Hee,Hong, Su-Hyun,Kim, Won-Il 대한한방내과학회 2007 大韓韓方內科學會誌 Vol.28 No.4
This study is a clinical report of one patient with symptoms remaining after western medical therapy for ulcerative colitis. Ulcerative colitis, a diffuse inflammatory disease of the mucosal lining of the colon and rectum, is characterized by a remitting and relapsing course. Therefore treatment is difficult and the proper treatment typically isn't established. We provided acupuncture-moxibustion therapy 28 times and prescribed Dansamboheol-tang gagam, which functions by nourishing the blood (補血), strengthening the spleen (健脾), adjustment of ki (理氣), removal of extravasated blood (祛瘀), and warming of the kidney (溫腎), for 30 days. The patient improved in quality of life and the symptoms disappeared. This study suggests that Dansamboheol-tang gagam, acupuncture, and moxibustion treatment has an effect on improving the symptoms remaining after western medical therapy for ulcerative colitis.
유리섬유 메시의 인장력에 따른 텍스타일 보강 패널의 휨강도 특성
김상헌,이세현,Kim, Sang Heon,Lee, Sea Hyun 한국섬유공학회 2018 한국섬유공학회지 Vol.55 No.6
Fibers are recently being considered as a new agent for improving the performance of existing building materials. However, until now, only simple methods have been applied for fiber use, such as scattering a small fiber amount inside the material or using fibers as a sheet covering for the material. Application of woven or textile fibers inside the material is believed to result in higher performance of a building material. However, because basic research on composite material performance is still underway and the theoretical manufacturing skills and techniques for fiber application have not been implemented, fibers have not yet been practically used in building materials. The purpose of this study is to evaluate the properties of the flexural strength of composite materials using textile fibers to obtain fundamental data for the production of high-performance building materials. The flexural strength of the textile-reinforced specimens increases by 55% as compared with that of the reference specimens, and it increases proportionally with an increase in the maximum tensile load of the textile. The flexural strength of the panel is estimated to increase on the basis of the tensile load of the textile. However, an increase in the thickness of the specimen containing the textile decreases the rate of increase in flexural strength.