• 제목/요약/키워드: Electro-stimulation

검색결과 79건 처리시간 0.033초

알콜 탈수소효소의 안정도에 미치는 전기 자극의 효과 (Effect of Electro-stimulation on Stability of Alcohol Dehydrogenase from Horse Liver)

  • 이강민;김철생;이혜정;함대현;박충웅
    • 동의생리병리학회지
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    • 제18권6호
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    • pp.1723-1727
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    • 2004
  • We investigated the activity and stability of alcohol dehydrogenase from horse liver (HLADH) under the electric stimulation. The activity and stability of alcohol dehydrogenase depended on electric output voltaqe, stimulation time, pulse duration and pulse interval, and temperature. HLADH retained about 23% of its activity in buffer but 78% in 10% trehalose solution under electric stimulation with 10V, 10min, The stabilizing of enzymes against electric stimulation by stabilizing additives showed a great potential use of enzymes in biotechnology and medical engineering fields.

만성요통 환자의 다열근에 적용한 전침이 통증 및 유연성에 미치는 효과 (Effect of the Electro-acupuncture Stimulation into the Multifidus on Subjective Pain and Lumbar Flexibility in Patients with Chronic Low Back Pain)

  • 장원석;박흥기;김근조
    • 대한물리의학회지
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    • 제3권3호
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    • pp.185-192
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    • 2008
  • Purpose : The purpose of this study is to examine the effect of the electro-acupuncture stimulation into the multifidus for the lumbar flexibility improvement and pain reduction. The subjects were consisted of 20 women patients with chronic low back pain. Methods : 20 women patients with chronic low back pain voluntary participated for the research. 15 minute electro-acupuncture stimulation(frequency: 4Hz, Intensity: below threshold of pain) with Infra-red therapy, 3 times a week during 6 weeks period. Acupuncture application given to the patients' trigger point of the multifidus. The Application of multifidus was L3, L4, L5 spinal vertebra levels Short form McGill pain questionnaire (SFMPQ) was used to measure patient's pain level. Lumbar flexibility measurement was trunk flexion and trunk extension. Global Perceived Effect Scale(GPES) was used to measure recovery or worse of patient's condition. Results : SFMPQ was after treatment showed significantly decreased more than before stimulation treatment (P<.05). Lumbar flexibility was after treatment showed significantly increase more than before treatment(P<.05). GPES was after treatment showed significantly increased more than before treatment(p<.05). Conclusion : This study will be used as treatment method of patient with chronic LBP. The multifidus muscle in chronic LBP patients clinical significance. Most of chronic LBP patients have multifidus contraction pattern. So chronic LBP patients necessary multifidus muscle release treatment.

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Photoresponsive Characteristics of N-channel Pseudomorphic HEMT and MESFET Under Optical Stimulation for Possible Applications to Millimeter-Wave Photonics

  • 김동명;김희종;이정일;이유종
    • E2M - 전기 전자와 첨단 소재
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    • 제12권8호
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    • pp.39-45
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    • 1999
  • Comparative photoresponsive current-volt-age characteristics of n-channel PHEMT and MESFET on GaAs substrate. with (W/L)=200${\mu}{\textrm}{m}$/1${\mu}{\textrm}{m}$ of gates, are reported as a function of electro-optical stimulation (P\ulcorner, λ=830nm) for the first time as far as we know. Significantly different photoresponses are observed in MESFET and PHEMT, mainly due to different optoelectronic mechanisms in the formation and current conduction of channel carriers. Under high optical power, high photoresponsity with a strong non-linearity with P\ulcorner, predominantly due to a parallel conduction via a heavily doped Al\ulcornerGa\ulcornerAs donor layer, was observed in PHEMT while the optically induced drain current has been very small but monotonically increasing with optical stimulation in GaAs MESFET. We also investigated differences in optically stimulated gate leakage currents and photonic gate responses on gate voltage and drain voltage as a function of P\ulcorner. Based on the drain and gate responses to electro-optical stimulation. PHEMTs are expected to be a better candidate for high performance photonically responsive microwave device compared with MESFETs.

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전침(電鍼)의 Prameters에 대한 실험(實驗)적 연구-자극시간(刺戟時間), 시술(施術)기간, 자극(刺戟)깊이를 중심으로- (Experimental Study of Electro-Acupuncture's Parameters at ST36 on the Serum Gastrin Level in Rats)

  • 윤정안;유윤조;김강산;김경식;김홍훈;김대중;조남근
    • Journal of Acupuncture Research
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    • 제22권1호
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    • pp.145-153
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    • 2005
  • 침(鍼) 치료효과(治療效果)에 영향을 주는 자극(刺戟) 시간(時間)과 자침(刺鍼) 깊이 및 시술(施術) 기간(期間)에 따른 효과차리(效果差異)를 관찰하기 위하여 족삼리(足三里)에 전침(電鍼)을 사용하여 위산분비를 촉진시키는 호르몬인 혈중 gastrin 농도의 변화를 관찰하여 다음과 같은 결과를 얻었다. 1. 자침 시간의 비교에서 10분, 30분 실험군에서는 대조군에 비하여 혈중 gastrin 농도를 유의하게 증가시켰으나, 60분 실험군에서는 변화를 관찰할 수 없었다. 2. 시술 기간의 비교에서 5일과 10일 실험군에서는 대조군에 비하여 혈중 gastrin 농도를 유의하게 증가시켰으나, 1일 실험군에서는 변화를 관찰할 수 없었다. 3. 자침 깊이의 비교에서 전체자극군과 피부자극군에서는 대조군에 비해 혈중 gastrin 농도를 유의하게 증가시켰으나, 심부자극군에서는 변화를 관찰할 수 없었다. 이상의 결과로 미루어 침 치료효과를 실질적으로 향상시키기 위해서는 영향을 줄 수 있는 다양한 인자들에 대한 실험적, 임상적 비교 연구가 진행되어 임상과 기초이론에 활용할 수 있는 자료가 구축되어야 할 것으로 사료된다.

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양측성 안면신경 마비 치험 예 (A Case of Bilateral Facial Nerve Palsy Treated with Serial Stellate Ganglion Block)

  • 최훈;한영진;고성훈;최현규;정세진;박현경
    • The Korean Journal of Pain
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    • 제9권1호
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    • pp.187-190
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    • 1996
  • Facial nerve palsy is not an uncommon disease encountered at the department of otolaryngology or pain clinic. It usually occurs following viral infection(Bell's palsy, BP). However, it is rare to develop bilaterally, and that not simultaneously. We experienced a rare case of bilateral facial nerve palsy. Patient first experienced left side paralysis, then right side paralysis approximately two months later. We treated the patient with serial bilateral stellate ganglion blocks(SGB). When left side paralysis improved, we performed unilatertal SGB for right side paralysis. Patient was also treated with intermittent electro-acupuncture stimulations, to right side first, then left side. Four months of treatment provided good results. This may be the first case, in Korea, of facial nerve paralysis bilaterally within a certain interval, treated with serial SGB and electro-acupuncture stimulation. However, the etiology of this bilateral BP was not fully confirmed as being a cause of viral origin.

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미주신경 전기자극이 심박변이도와 스트레스호르몬 분비에 미치는 효과 - 파일럿 연구 (Effect of Vagus Nerve Electrical Stimulation to Cortisol Level Control and Heart Rate Variability(HRV) - Pilot Study)

  • 문현주;조성학
    • 대한통합의학회지
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    • 제6권3호
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    • pp.11-16
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    • 2018
  • Purpose: Stress tends to cause sympathetic hyperactivity and increase blood cortisol levels. The vagus nerve is a parasympathetic nerve that is involved in relaxing the body. The purpose of this study was to investigate the effects of electrical stimulation of the vagus nerve on stress hormone (cortisol) levels and heart rate variability (HRV) in humans. Methods: A total of 10 healthy subjects participated in the pilot experiment. All subjects underwent electrical vagus nerve stimulation for 20 minutes in the cymba conchae of the left ear. An electro cardiogram meter was used to measure HRV. Blood samples were collected and analyzed for cortisol levels. The standard deviation of all normal N-N intervals (SDNN), root mean square of successive differences (RMSSD), low frequency, high frequency, and cortisol levels were compared in pre and post mean values after the intervention. Data were analyzed using the Wilcoxon's signed-rank test. Results: Coritsol levels were observed to decrease after vagus nerve electrical stimulation. The mean SDNN and RMSSD values were increased after the intervention, but not significantly. Conclusion: Vagus nerve electrical stimulation has been shown to increase the ability of the parasympathetic nerve to adapt to upward regulation and stress. Vagus nerve electrical stimulation could thus be an effective treatment for modern social psychological stress control.

백서의 적출창상에 대한 피하전기자극이 창상수축에 미치는 효과 (Wound Contraction Effects of Percutaneous Electrical Stimulation on Excision Wound Models)

  • 공광식;김수현;오석;김용남;김태열
    • The Journal of Korean Physical Therapy
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    • 제23권1호
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    • pp.45-51
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    • 2011
  • Purpose: This study investigated the effect of needle electrode stimulation at various frequencies on change in wound healing in excision wound rats Methods: Twenty-four Sprague-Dawley adult male rats were assigned to one of four groups: control (n=6), acupuncture group (n=6), low rate (2 Hz) percutaneous electrical stimulation group, high rate (100 Hz) percutaneous electrical stimulation group (n=6). We analyzed morphological effects by measuring the area of the excision wound, the contraction rate, and chromatic red. A digital camera and an image analysis program were used to measure and analyze the wound area,which was also used for the contraction rate. Chromatic red was obtained by calculating red, green, and blue (RGB) values of the wound area. Results: The electro acupuncture stimulation groupsshowed significant healing effects compared to the control and acupuncture groups. Conclusion: The results of this study showed that various frequencies of percutaneous electrical stimulation have a therapeutic effect on wound healing.

전침치료를 통한 교통사고로 유발된 외전신경마비로 인한 사시 환자의 치험 1례 (The One Case Report of Strabismus of Traffic Accident Induced Abducence Nerve Paralysis Treated with Electro-acupuncture)

  • 한정석;원정윤;김문준;최정은
    • 한방재활의학과학회지
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    • 제25권3호
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    • pp.111-117
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    • 2015
  • Objectives The purpose of this case is to report the effect of Korean Medicine, especially Electro-acupuncture on strabismus of traffic accident induced abducens nerve paralysis. Methods Patient received Korean Medicine treatment such as acupuncture, electro-acupuncture & Herb-medicine. Patienst was treated with the electro-acupuncture at Right eye paralytic lateral rectus muscle lesions. The case was enforced 10 minutes using the PG-306 electro-acupuncture and applyed the low consequence wave of 1-8Hz. The improvement of the strabismus was observed. Results During ten weeks of treatment, patient's strabismus and diplopia were improved. Conclusions In this case, Electro-acupuncture on strabismus and diplopia of traffic accident induced abducens nerve paralysis was effective. The effectivity is depended on the time stimulation is performed.