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메스암페타민 의존 환자에서 바이오피드백 훈련의 효과 : 정량화 뇌파를 이용한 예비연구
박창교(Changkyo Park),권도훈(Dohoon Kwon),조성남(Sungnam Cho),김양태(Yangtae Kim),김기성(Kiseong Kim),조수현(Soohyun Joe) 한국중독정신의학회 2012 중독정신의학 Vol.16 No.2
Objectives : In this study, authors investigated the neurophysiological effect of biofeedback training in patients with meth-amphetamine dependence using quantitative EEG (qEEG). Methods : Methamphetamine-dependent patients willing to receive biofeedback therapy were recruited in an addiction ward. qEEG measurements were conducted before and after each training session. Theta (4-8 Hz) relative power was measured and com-pared before and after biofeedback qEEG of each session. Results : A total of 49 pairs of relative power before and after bio-feedback qEEGs were obtained from 11 subjects with methamphetamine dependence. The right temporal theta relative power showed a significant decrease after biofeedback training. The right frontal theta relative power in the early biofeedback train-ing sessions showed a significant decrease compared with the later training sessions. Additionally, the right temporal theta relative power after the last-biofeedback training session also showed a significant decrease compared with the biofeedback before the first training session. Conclusion : These results suggested that the application of biofeedback training program changed brain waves and thus, could be a useful method of treat-ment for methamphetamine dependence.
전처리공정이알루미늄얌극산화법에의해제조된규칙적인나노급미세기공의형성에미치는영향
이재홍,이병욱,김창교,홍진수,Lee Jae-Hong,Lee Byung-Wook,Kim ChangKyo,Hong Chinsoo 대한전기학회 2005 전기학회논문지C Vol.54 No.6
Nano-sizedporearrayswerepreparedbytheself-organizationprocessesoftheanodicoxidationusingthealuminumplatewith99.999$\%$purity.Sincethealuminumplatehasaroughsurface,thealuminumplateof1mmthicknesswasanodizedafterthepre-treatmentsofpressing,mechanicalpolishing,thermaloxidation,chemicalpolishing,andelectrochemicalpolishing.Thediameterofthenano-sizedporesandthethicknessofbarrierlayercanbecontrolledbyappliedvoltage.Thethicknessofaluminamembranecanalsobecontrolledbytheanodizingcurrent.Thenano-sizedporeswithdiameterof60$\~$120nm,thedistancebetweenthenearestporesof30$\~$60nm,andthethicknessof6$\~$7Wwereobtainedbytheanodicoxidationprocess.Theporewideningprocesswasemployedforobtainingtheone-channelwithflatsurfacebecausetheporesofthealuminamembranepreparedbythefixedvoltagemethodshowsthestructureoftwo-channelwithroughsurface.
임준형(Junhyoung Im),주영철(Youngcheol Joo),이주헌(Joohun Lee),김창교(Changkyo Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
A lever type NO₂ micro gas sensor was fabricated by MEMS technology. In order to heat up the gas sensing material to a target temperature, a micro heater was built on the gas sensor. The sensing material laid on the heater and electrodes and did not contact with the silicon base to minimize the heat loss to the silicon base. The electric power to heat up the gas sensor to a target temperature was measured. The temperature distribution of micro gas sensor was analyzed by a CFD program. The predicted electric power of micro heater to heat up the sensing material to the target temperature showed a good agreement with the measured data. The design of micro gas sensor could be modified to show more uniform temperature distribution and to consume less electric power by optimizing the layout of micro heater and electrodes.