음악과 음향진동의 자극에 의한 긴장완화의 효과

문덕홍(D. H. Moon),양주호(J. H. Yang),김영완(Y. W. Kim),김태균(T. G. Kim) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-

개인마다의 소음, 음악과 음향진동 자극에 대한 반응은 다소 차이가 발생하는 것을 고려하여 상대적인 비율로 비교ㆍ고찰하였다. 우선 강한 소음 자극에 대한 뇌파의 변화는 각성을 의미하는 베타파의 증가 및 안정을 의미하는 알파파의 감소를 보였고 좋은 자극에 대해서는 그 반대의 효과를 보였다. 즉, 좋은 자극에 대한 긴장완화의 효과가 있음을 알았다. 자극후의 변화에서는 좋은 자극으로 대체로 알파파가 증가하는 경향이 있지만 이와 반대의 경우도 발생 개인의 차이가 있음을 알았다. 추후, 압력자극들에 대한 주파수 분석을 통하여 입력에 대한 뇌파의 상관관계를 연구하고, 또한 보다 많은 데이터를 취득하여 통계적인 경향분석이 필요하다고 사료된다. The present study describes the effects of music and vibroacoustic stimuli to the relaxation of human body. We have carried out the experiment on 6 human subjects of which are composed 3men and 3women. We have investigated the electroencephalogram(EEG) of all subjects before and after the stimuli of which are made a strong noise or the meditatiom music and the acoustic vibration. The vibroacoustic device has transmitted meditation music as vibration between 20㎐ and 250㎐ to the body. From the experimental results, we made sure the effects that the meditation music and vibroacoustic stimuli influenced the relaxation for good as alpha-wave was increased contionously during the good stimuli and after that.

음향진동장치에 의한 인체의 스트레스 저감효과

문덕홍(D. H. Moon),김영완(Y. W. Kim),강화중(H. J. Kang),최명수(M. S. Choi) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5

개인마다 소음, 음악과 음향진동 자극에 대한 인체의 반응은 상당한 차이가 발생하는 것을 고려하여 뇌파 파워의 상대적인 비율로 비교ㆍ고찰하였다. 우선 강한 소음 자극에 대한 뇌파의 변화는 긴장과 스트레스 증가를 의미하는 베타파의 증가 및 긴장완화와 안정을 의미하는 알파파의 감소를 보였고, 좋은 자극에 대해서는 그 반대의 효과를 보였다. 즉 좋은 자극에 의한 스트레스저감의 효과가 있음을 확인하였다. 자극 후의 변화에서는 좋은 자극시와 마찬가지로 대체로 알파파가 증가하는 경향이 있지만 이와 반대의 경우도 발생하고있어 이 역시 개인차가 있음을 알았다. The present study describes the effects of music and vibroacoustic stimuli to the relaxation of human body. We have carried out the experiment on 6 human subjects of which are composed 3men and 3women. We have investigated the electroencephalogram(EEG) of all subjects before and after the stimuli of which are made a strong noise or the meditatiom music and the acoustic vibration. The vibroacoustic device has transmitted meditation music as vibration between 20㎐ and 250㎐ to the body. From the experimental results, we made sure the effects that the meditation music and vibroacoustic stimuli influenced the stress reduction of human body for good as alpha-wave was increased continuously during the good stimuli and after that.

Vibrational Relaxation of Cyanate or Thiocyanate Bound to Ferric Heme Proteins Studied by Femtosecond Infrared Spectroscopy

Seongchul Park,Jaeheung Park,Han-Wei Lin,임만호 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.3

Femtosecond vibrational spectroscopy was used to measure the vibrational population relaxation time (T1) of different anions bound to ferric myoglobin (MbIII) and hemoglobin (HbIII) in D2O at 293 K. The T1 values of the anti-symmetric stretching (ν1) mode of NCS in the NCS− bound to MbIII (MbIIINCS) and HbIII (HbIIINCS) in D2O are 7.2 ± 0.2 and 6.6 ± 0.2 ps, respectively, which are smaller than that of free NCS− in D2O (18.3 ps). The T1 values of the ν1 mode of NCO in the NCO− bound to MbIII (MbIIINCO) and HbIII (HbIIINCO) in D2O are 2.4 ± 0.2 and 2.6 ± 0.2 ps, respectively, which are larger than that of free NCO− in D2O (1.9 ± 0.2 ps). The smaller T1 values of the ν1 mode of the heme-bound NCS suggest that intramolecular vibrational relaxation (VR) is the dominant relaxation pathway for the excess vibrational energy. On the other hand, the longer T1 values of the ν1 mode of the heme-bound NCO suggest that intermolecular VR is the dominant relaxation pathway for the excess vibrational energy in the ν1 mode of NCO− in D2O, and that intramolecular VR becomes more important in the vibrational energy dissipation of the ν1 mode of NCO in MbIIINCO and HbIIINCO.

Vibrational Relaxation of Cyanate or Thiocyanate Bound to Ferric Heme Proteins Studied by Femtosecond Infrared Spectroscopy

Park, Seongchul,Park, Jaeheung,Lin, Han-Wei,Lim, Manho Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.3

Femtosecond vibrational spectroscopy was used to measure the vibrational population relaxation time ($T_1$) of different anions bound to ferric myoglobin ($Mb^{III}$) and hemoglobin ($Hb_{III}$) in $D_2O$ at 293 K. The $T_1$ values of the anti-symmetric stretching (${\nu}_1$) mode of NCS in the $NCS^-$ bound to $Mb^{III}$ ($Mb^{III}$NCS) and $Hb_{III}$ ($Hb_{III}$NCS) in $D_2O$ are $7.2{\pm}0.2$ and $6.6{\pm}0.2$ ps, respectively, which are smaller than that of free NCS. in $D_2O$ (18.3 ps). The $T_1$ values of the ${\nu}_1$ mode of NCO in the $NCO^-$ bound to $Mb^{III}$ ($Mb^{III}$NCO) and $Hb_{III}$ ($Hb_{III}$NCO) in $D_2O$ are $2.4{\pm}0.2$ and $2.6{\pm}0.2$ ps, respectively, which are larger than that of free $NCO^-$ in $D_2O$ ($1.9{\pm}0.2$ ps). The smaller $T_1$ values of the ${\nu}_1$ mode of the heme-bound NCS suggest that intramolecular vibrational relaxation (VR) is the dominant relaxation pathway for the excess vibrational energy. On the other hand, the longer $T_1$ values of the ${\nu}_1$ mode of the heme-bound NCO suggest that intermolecular VR is the dominant relaxation pathway for the excess vibrational energy in the ${\nu}_1$ mode of $NCO^-$ in $D_2O$, and that intramolecular VR becomes more important in the vibrational energy dissipation of the ${\nu}_1$ mode of NCO in $Mb^{III}$NCO and $Hb_{III}$NCO.

Vibrational relaxation of NO stretching modes in ferrous NO and ferric NO in model heme

Park, J.,Lee, T.,Lim, M. Elsevier Science Publishers [etc.] 2013 Chemical Physics Vol.422 No.-

Femtosecond IR-pump-IR-probe spectroscopy was used to measure the vibrational lifetimes (T<SUB>1</SUB>) of NO stretching modes of ferrous NO near 1600cm<SUP>-1</SUP> and ferric NO near 1900cm<SUP>-1</SUP> at room temperature. The T<SUB>1</SUB> of NO bound to the heme, ranging from 3.5 to 34ps, is much shorter in ferrous NO. The vibrational relaxation (VR) of NO was independent of solvent used and excess imidazole concentration, suggesting that intramolecular VR into the internal vibrational modes of the probed molecule may be the dominant pathway for VR of the bound NO. With estimated T<SUB>1</SUB> of the bound NO, we simulated transient spectra of NO bound to ferrous hemoglobin (Hb<SUP>II</SUP>) after photodeligation of Hb<SUP>II</SUP>NO and discussed the influence of the hot band on the determination of the dynamics of geminate rebinding of NO to Hb<SUP>II</SUP> using the change in the magnitude of the fundamental band.

Vibrational Relaxation and Fragmentation in Icosahedral (Ar2+)Ar12 Clusters

Jongbaik Ree,김유항,Hyung Kyu Shin 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.9

A dynamics study of relaxation and fragmentation of icosahedral argon cluster with a vibrationally excited Ar2 + (v) is presented. Local translation is shown to be responsible for inducing energy flow from the embedded ion to host atoms and fragmentation of the cluster consisting of various low frequency modes. The total potential energy of (Ar2 +)Ar12 is formulated using a building-up procedure of host-guest and host-host interactions. The time dependence of ion-to-host energy transfer is found to be tri-exponential, with the short-time process of ~100 ps contributing most to the overall relaxation process. Relaxation timescales are weakly dependent on both temperature (50-300 K) and initial vibrational excitation (v = 1-4). Nearly 27% of host atoms in the cluster with Ar2 + (v = 1) fragment immediately after energy flow, the extent increasing to ~43% for v = 4. The distribution of fragmentation products of (Ar2 +)Ar12 → (Ar2 +)Arn + (12-n)Ar are peaked around (Ar2 +)Ar8. The distribution of dissociation times reveals fragmentation from one hemisphere dominates that from the other. This effect is attributed to the initial fragmentation causing a sequential perturbation of adjacent atoms on the same icosahedral five-atom layer.

Vibrational Relaxation and Fragmentation in Icosahedral (Ar₂⁺)Ar₁₂ Clusters

Ree, Jongbaik,Kim, Yoo Hang,Shin, Hyung Kyu Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.9

A dynamics study of relaxation and fragmentation of icosahedral argon cluster with a vibrationally excited $Ar_2^+$ (${\nu}$) is presented. Local translation is shown to be responsible for inducing energy flow from the embedded ion to host atoms and fragmentation of the cluster consisting of various low frequency modes. The total potential energy of $(Ar_2^+)Ar_{12}$ is formulated using a building-up procedure of host-guest and host-host interactions. The time dependence of ion-to-host energy transfer is found to be tri-exponential, with the short-time process of ~100 ps contributing most to the overall relaxation process. Relaxation timescales are weakly dependent on both temperature (50-300 K) and initial vibrational excitation (${\nu}$ = 1-4). Nearly 27% of host atoms in the cluster with $Ar_2^+$ (${\nu}$ = 1) fragment immediately after energy flow, the extent increasing to ~43% for ${\nu}$ = 4. The distribution of fragmentation products of $(Ar_2^+)Ar_{12}{\rightarrow}(Ar_2^+)Ar_n+(12-n)Ar$ are peaked around $(Ar_2^+)Ar_8$. The distribution of dissociation times reveals fragmentation from one hemisphere dominates that from the other. This effect is attributed to the initial fragmentation causing a sequential perturbation of adjacent atoms on the same icosahedral five-atom layer.

Vibrational Relaxation of HF (v=3) + CO

이창순 대한화학회 2016 대한화학회지 Vol.60 No.6

충격파관에서의 산소 진동 완화 현상 코드 개발 및 검증

이상훈(Sang Hoon Lee),박기수(Gisu Park),김재강(Jae Gang Kim) 한국항공우주학회 2016 한국항공우주학회 학술발표회 논문집 Vol.2016 No.11

Vibrational Relaxation of HF (v=3) + CO

Lee, Chang Soon Korean Chemical Society 2016 대한화학회지 Vol.60 No.6