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클라리세이지 향흡입이 치주염환자의 치료 시 통증 및 스트레스에 미치는 효과
유지혜 ( Ji Hye You ),김미영 ( Mi Young Kim ),문혜경 ( Hae Kyung Moon ),민선식 ( Sun Seek Min ),설근희 ( Geun Hee Seol ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.1
Objectives. The purpose of this study was to investigate the analgesic and antistress effect of clary sage-inhalation in periodontitis patients. Methods. Thirty-five patients with periodontitis, who were classified under Russell`s Periodontal Index, were studied from September to December 2009. All patients understood the purpose of this study and written informed consent for the study was obtained. Results. Clary sage-inhalation was conducted during the treatment period. Blood pressure, pulse, visual analog scale, and salivary cortisol levels were measured before and after treatment. The visual analog scale score which represents subjective pain perception in the experimental (clary sage-inhalation) group was significantly lower than that in the vehicle (almond oil-inhalation) or control (saline-inhalation) group. In addition, the experimental group showed the lowest systolic and diastolic blood pressure and pulse rate among the three groups. However, there was no significant difference in salivary cortisol level among the three groups. Conclusions. Clary sage-inhalation is effective in alleviating pain and blood pressure. These results suggest that clary sage-inhalation can be a useful method for the relief of pain during the treatment of periodontitis.
공간 과제 수행 시 20대와 40대의 두정엽과 전두엽에서의 활성화 차이
유지혜,홍용표,이행운,이수열,정순철,You, Ji-Hye,Hong, Yong-Pyo,Lee, Hang-Woon,Lee, Soo-Yeol,Chung, Soon-Cheol 대한의용생체공학회 2006 의공학회지 Vol.27 No.6
The purpose of this study is to examine differences between 20s and 40s in visuospatial performance and brain activation areas using functional Magnetic Resonance Imaging (fMRI). Eight male college students in their twenties ($21.5{\pm}2.3$ years old) and six male adults in their forties ($45.7{\pm}2.6$ years old) who were graduated from college participated in the study. A visuospatial task was presented while brain images were acquired by a 3T fMRI system. Compared to the 20s the 40s showed lower visuospatial performance. There were more activations observed at the parietal and superior frontal areas at 20s compared to 40s. There were more activations observed at the middle frontal and occipital areas at 40s compared to 20s. The results of this study show that the lowering of visuospatial performance with aging was correlated to the decrease of activation area at the parietal lobe and the change of activation area at the frontal lobe.
이수영 ( Su Yeong Lee ),유지혜 ( Ji Hye You ),이용성 ( Yong Sung Lee ),김홍석 ( Hong Seok Kim ),정성균 ( Seong Kyun Cheong ),신기훈 ( Ki Hoon Shin ) 한국안전학회(구 한국산업안전학회) 2016 한국안전학회지 Vol.31 No.1
Rubber parts are widely used in many applications such as dampers, shock absorbers, and seals used in railway and automotive industries. Much research has thus far been conducted on property estimation and life prediction of rubber parts. To predict the service life of rubber parts at room temperature, most prior work adopts the well-known Arrhenius model that needs the accelerated life test in high-temperature conditions. However, they may not reflect the actual conditions of use that rubber parts are usually used under a specific strain condition during long period of time. In this context, we propose a method for the life prediction of rubber parts inactual conditions of use. The proposed method is based on the accelerated life test using stress relaxation during which three relatively high elongation percentages (100%, 200%, and 300%) are applied to the rubber specimens. Rubber specimens were prepared in accordance with KS M 6518 standard and three stress relaxation testers were fabricated for actual experiments. Finally, a inverse power model for life prediction was derived from experimental results. The predicted life was compared with the actual test life for validation.