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정두영(Doo Young Jung),강찬형(Chan Hyoung Kang) 한국표면공학회 2009 한국표면공학회지 Vol.42 No.5
A surface acoustic wave (SAW) filter structure was fabricated employing 4 μm thick nanocrystalline diamond (NCD) and 2.2 ㎛ thick ZnO films on Si wafer. The NCD film was deposited in an Ar/CH₄ gas mixture by microwave plasma chemical vapor deposition method. The ZnO film was formed over the NCD film in an RF magnetron sputter using ZnO target and Ar/O₂ gas. On the top of the two layers, copper film was deposited by the RF sputter and inter digital transducer (IDT) electrode pattern (line/space : 1.5/1.5 ㎛) was defined by the photolithography including a lift-off etching process. The fabricated SAW filter exhibited the center frequency of 1.66 ㎓ and the phase velocity of 9,960 ㎧, which demonstrated that a giga Hertz SAW filter can be realized by utilizing the nanocrystalline diamond thin film.
심박동수 변이 분석에 의한 승모근 통증 환자의 자율신경 활성에 대한 고찰
정두영 ( Doo Young Jung ),송미연 ( Mi Yeon Song ),이종수 ( Jong Soo Lee ) 한방재활의학과학회 2004 한방재활의학과학회지 Vol.14 No.3
Objectives: The pathophysiological link between stress and trapezius myalgia remains a puzzle. Stress-induced shoulder and neck pain are not necessarily associated with elevated trapezius muscle activity. It has been reported that sympathetic vasoconstriction is one of the pain-initiating mechanisms which are related to stress and not mediated through muscle activity. The study was designed to investigate the sympathetic nerve activity in trapezius myalgia, using the power spectrum analysis(PSA) of the heart rate variability(HRV) Method: 46 outpatients with Trapezius myalgia who visited the Dept. of Oriental Rehabilitation Medicine in Conmaul Oriental Hospital from March, 2003 to April, 2004 were selected as a study group, and 39 healthy individuals as a control group. Total power(TP), Low Frequency(LF), High Frequency(HF), and LF/HF ratio were used as the indices of HRV. T-test was used to compare the HRV of Case and Control. Results: LF/HF ratio was significantly higher in trapezius myalgia. (P<0.05) But, there was no significant difference between both groups on TP, LF, HF. Conclusion: The results suggest that Trapezius myalgia is correlated with the sympathetic nerve activity.
Guillain-Barre 증후군 환자의 치험 1례 -전기진단검사를 중심으로-
정두영 ( Doo Young Jung ),류수민 ( Su Min Ryu ),주병규 ( Byung Gyu Joo ),김영신 ( Young Shin Kim ) 한방재활의학과학회 2004 한방재활의학과학회지 Vol.14 No.1
Objectives: There was a significant effect on treating Guillain-Barre syndrome patient on the bad prognosis with oriental medicine therapy. Methods: We used acupuncture, moxibustion, electroacupuncture, physical therapy, herbal medication and exercise treatment for 96 days. We observed the change in the Nerve Conduction Study and Electromyogram at the time of onset, admission and discharge. Results: The muscle power was recovered from Grade 4 to grade 2 with this treatments and was also able to be observed recovery through Needle Electromyogram. But we thought that it would be limited to recover up to a certain point because of no significant change in Nerve conduction Study excluding nerve conduction velocity. Conclusions: We confirmed that there was a significant effect on treating GBS patient on the bad prognosis with oriental medicine therapy. In addition, we could confirm that Electrodiagnostic studies were effective on diagnosis, prognosis and treatment evaluation of Guillain-Barre syndrome patient.