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치근단절제술을 이용한 치근단 병소의 치료에 대한 증례보고
손흥규,최형준,이성준,김성오 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.3
It has been reported that the operative treatment for the preservation of tooth having periapical lesion has shown over ninety percent of success whereas in the case where calcified canal is severe, canal is perforated, ledge is formed, tooth restored by post and core and cases where symptoms still exist after treatment, endodontic treatment may not all be the solution in attaining a successful treatment. Thus Apicoectomy would generally be used to prevent the loss of tooth having periapical lesion where treatment prognosis is poorly evaluated by endodontic treatment. In case 1 and 2, endodontic treatment was applied due to unilocular radiolucent lesion in periapical area but the symptoms somehow did not show improvement and therefore operated apicoectomy, and as in case 1, favorable results were attained but as in case 2, yet more observation has to be done. The followings are the results we have concluded: 1. In the process of endodontic treatment, absolute canal obturation has great effect on attaining successful treatment. 2. In cases where endodontic treatment is not highly recommended, for example, tooth having dental pulp and periapical lesion, favorable results can be attained by applying apicoectomy.
박히준,채윤병,차웅석,박종배,이혜정,이향숙,인창식,고형균,김수영,최일환,김강식,문정배,배기태,유경환,육근영,정병주,손인철,임사비나 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2004 東西醫學硏究所 論文集 Vol.2004 No.-
Background : The cun measurement System, an essential and convenient method in locating acupoints, has been widely used in the practice of acupuncture. However, traditional cun measurement has been criticized for its lack of reliability. Objectives : The purposes of this study are to determine if one cun measured by the directional methods have a consistency with that of proportional methods and to investigate which factors are related with these differences, especially in forearm. Methods : The distance between the elbow crease and the wrist crease of forearm was compared to a reference value of one cun obtained by the directional method. In this method, one cun is one third of the distance between index finger and Small finger of a subject, measured at proximal interphalangeal joint. In addition, to investigate the factors influencing the differences between these two methods, we measured the height and body weight and calculated body mass index (BMI). Finally we analyzed the factors correlated with these lengths by linear regression test. Results : The results showed that one cun obtained by the directional methods were significantly different from one cun by the proportional methods in forearm. It was demonstrated that the length acquired with the directional method was more correlated with body weight and body mass index, while the length obtained by the proportional method was more correlated with the height.
김여환,최형철,손의동,이광윤,김원준,박형배,하정희 대한생물치료정신의학회 1996 생물치료정신의학 Vol.2 No.2
천마(Gastrodia elata Blume)의 근경을 말린 것은 한방에서 오래전부터 여러 형태의 간질발작 치료 목적으로 이용되어지고 있었으나 어떤 활성물질에 의해 또 어떤 작용 기전을 통해 약리작용을 나타내는지를 충분하게 설명하지 못하고 있다. 최근 항경련 작용기전 연구 결과 천마추출물의 GABA성 신경전달계에 대한 조절작용과 관련이 있을 것이라는 연구 결과가 보고되었으며, 소량으로도 뇌억제 및 진정작용이 있다는 문헌을 참고하여 볼 때 천마의 항불안 작용 가능성이 시사되었다. 이에 본 연구를 통하여 천마를 사용하여 실험동물에서 항불안 작용을 검색하고 그 작용기전의 일부를 밝히고자 항불안작용 기전에 중요한 benzodiazepine 수용체와의 상호작용을 관찰하였다. 실험 결과, 천마 추출물의 경구 장기투여는 생쥐의 elevated plus maze 검사에서 개방 통로에로의 진입 및 개방통로에서의 체류시간을 증가시킴으로써 항불안 효과를 나타내었다. 천마의 에탄올 추출물은 benzodiazepine수용체 길항제인 [³H] Ro15-1788결합을 억제하였으며, 천마 추출물은 [³H] Ro15-1788의 수용체 결합에 대한 최대 결합력(Bmax)은 변화시키지 않고, 친화력(affinity)을 감소시킴으로써 상경적인 결합 양상을 나타내었다. 또 천마의 에탄올 추출물은 benzodiazepine 수용체의 효현제인 flunitrazepam의 수용체 결합반응을 억제시켰는데, 이러한 억제는 GABA 존재하에서 항진되는 것을 관찰하였다. 이상의 결과로 미루어보아 천마의 에탄올추출물 내에는 항불안작용을 나타내는 성분이 함유되어 있을 가능성을 예상케한다. Gastrodia elata Blume is a medicinal plant which has been used as anticonvulsant in oriental medicine, and has been used as sedatives. A survey of the relevant literature has indicated that the putative anxiolytic activity of G.elata Bl. has not been scientifically investigated. Therefore, the present study was designed to assess anxiolytic property and interaction with benzodiazepine receptor of G. elata BI. The putative anxiolytic activity of ethanol extract of G. elata BI. was performed in mice using an elevated plus maze paradigm. Chronic oral administration of G. elata BI. showed anxiolytic action in mice. It was suggested that regulation of GABAergic neurotarnsmission may be important in the action of G. elata BI. The interaction of G. elata BI. with benzodiazepine receptor was investigated using rat cortices. Ethanol extract of G. elata inhibited the binding of [³H] Ro15-1788, a selective benzodiazepine receptor antagonist to benzodiazepine receptor. The inhibition of [³H] Ro15-1788 binding by G. elata BI. appeared to be competitive. Further, GABA significantly enhanced the potency of this extract in inhibiting [³H] flunitrazepam, a selective benzodiazepine receptor agonist, binding to benzodiazepine receptor. From these findings, it can be concluded that substance or substances with neurochemical properties characteristic of a benzodiazepine receptor agonist may contribute to the anxiolytic property of G. elata BI.
Sohn, Joon-Ho,Heo, Soo-Jeong,Sohn, Jeong-Ho,Lee, Joon-Hyung,Jung, Woo-Hwan,Kim, Dong-Bum,Cho, Sang-Hee The Korean Ceramic Society 1999 The Korean journal of ceramics Vol.5 No.2
In the $(Pb_{1-x}M_x)[(Mn_{1/3}Sb_{2/3})_{0.05}Zr_yTi_{0.95-y}]O_3$ system, where M=Ca and Sr, the piezoelectric properties were evaluated to examine the possibility of application to piezoelectric transformer. A Rosen-type piezoelectric transformer was formed, then the electrical properties of voltage step-up ratio, frequency characteristics etc. were analysed. The morphotropic phase boundary was determined to be y=0.475 in $Pb[(Mn_{1/3}Sb_{2/3})_{0.05}Zr_yTi_{0.95-y}]O_3$ system and the piezoelectric properties of this composition was kp=0.59, Qm=1600 and $\varepsilon_r$=1150. Moreover, when 1-2 mol% of Sr are substituted, enhanced piezoelectric properties of kp=0.61, Qm=1600 and $\varepsilon_r$=1400 were shown. The temperature rising (ΔT) of a piezoelectric transformer with $Pb[Mn_{1/3}Sb_{2/3})_{0.05}Zr_{0.475}Ti_{0.475})]O_3 $ composition was $10^{\circ}C$, and the voltage step-up ratio was 500 when the output voltage was 4000V, whereas the ΔT was below $3^{\circ}C$ and the resonant frequency variation ($\Delta f_r$) as a function of load resistance was below 5% when the output voltage was 2000 V. These characteristics are superior to the properties of materials, which were substituted by Ca or without substitution.
Ultrastructure of the Fertilized Egg Envelope from Pseudobagrus fulvidraco, Bagridae, Teleostei
Sohn, Joon Hyung,Kwon, Ohyun,Kim, Dong Heui Korean Society of Microscopy 2016 Applied microscopy Vol.46 No.3
The ultrastructure of fertilized egg envelope from Pseudobagrus fulvidraco belongs to Bagridae was investigated using light and electron microscopes. The fertilized egg was compressed spherical, light-yellowish, demersal, and adhesive. The size of fertilized egg is about $1.85{\pm}0.13mm$, perivitelline space is not well developed, and there were no appendicular structures on the outer surface of egg envelope and oil droplets in vitelline membrane under light microscope. The micropyle was located in the animal pole of fertilized egg. Adhesive reticular fiber was covered fertilized egg envelope. The thickness of egg envelope was about $3.7{\sim}4.2{\mu}m$, and the egg envelope consisted of two layers: an outer, electron-dense adhesive fibers layer and an simple inner layer with pore. Therefore, the ultrastructure of cross section of the fertilized egg envelope showed species specificity, but studies on the other species belongs to Bagridae were need to get correct information about common traits in family.
<sup>99m</sup>Tc를 이용한 경락의 위치와 흐름의 추적
손준형 ( Joon Hyung Sohn ),김현원 ( Hyun-won Kim ) 대한미용학회 2016 대한미용학회지 Vol.12 No.3
Investigation of meridian line and acupoints should be very important, as acupuncture and meridian massage for medical purpose in the hospital or for skin care in beauty shop are all based on traditional meridian theory. Radioactive technetium-99m pertechnetate (<sup>99m</sup>Tc) injected to a specific acupoint flowed upward along the meridian line as was suggested by traditional meridian theory. Tracing of injected <sup>99m</sup>Tc to an acupoint revealed that the meridian is a unique ductal system through which the materials flow.