十二經脈 走向순서에 關한 理論的 考察

柳勝勳,鄭遇悅,孫仁喆 한국전통의학연구소 2000 한국전통의학지 Vol.10 No.1

This study tried to reconsider the connecting order of the Twelve Main Meridians thought to be reasonable until now, on the commonsensical level of "the principles of reason" with the motive of taking off the bad habit of "the indolence" that we had made academic researches without the question of "why". In this study, the model was suggested for the purpose of being explained in the sides of the kinetics and the structure. And this study tried to obtain the prehension of the reality through the reason of "one-two-One". This study tried to reason about the most suitable structure of the connecting order with several theory on the assumption that we only knew the distribution of the Twelve Main Meridians, with the bearings and mean of the connecting in the Twelve Main Meridians excluded. I reflected present conditions that the reality of the Meridians wasn't made clear and proposed to design a model and made every effort to investigate the model vastly from the structural and kinetic relations of the model to the physiology and circulation of the Qi(vital energy) of human vital pheonomena. Chapter 3 provides the theory needed to understand the connecting order of the Twelve Main Meridians, as follows : "Pyo Bon Jung Qi"(標本中氣), exterior and interior of the body(the structure of "Yeo Hwan Moo Dan"(如環無端) through these theories), three rings made by "Kyo Sang Hap"(交相合), and "Yuk Hap"(六合) of the Twelve Main Meridians, "Jang Boo Sang Tong"(臟腑相通). In chapter 4, the connecting order of the Twelve Main Meridians is reconsidered from the sides of the Five Elements. From the theoretical investigation, I could reach to the object of this study about the connecting order of the Twelve Main Meridians and the theoretical "reasonability" : that is, the present connecting order of the Twelve Main Meridians is very reasonable.

위그너 분포함수를 이용한 이중장벽 공명 투과다이오드의 전류-전압특성에 관한 연구

金裕承,金正勳,徐柾河,沈載勳 弘益大學校 科學技術硏究所 1996 科學技術硏究論文集 Vol.7 No.2

By means of the self consistent calculation of the related Poisson's equation and the Wigner distribution function, the quantum transport of electrons in a double barrier tunneling diode(DBRTD) has been studied. The computer simulation has been accomplished by assuming the contacts/terminals of a DBRTD are open with regard to the surrounding. The eigenvalues of the Liouville superoperator of the equation of motion were also calculated. The derived Ⅰ-Ⅴcharacteristic of a DBRTD shows a similar trend with the results obtained by the conventional tunneling models.

소아환자에 있어서 외상방지를 위한 마우스가드의 치험례

김경희,김종수,유승훈 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.3

구강악안면 영역의 외상은 치아파절, 탈구, 골절, 연조직 손상을 일으킬 수 있으며, 뇌진탕의 원인이 되기도 한다. 미국과 일본에서는 contact sports일부에서 마우스가드의 장착이 의무화되어 있으나, 현재 한국에서는 운동 시 마우스가드의 장착을 거의 볼 수 없는 실정이다. 마우스가드는 크게 ready-made type과 custom-made type으로 나눌 수 있다. Ready made type의 마우스가드에는 형태가 일정하고 조정이 곤란한 stock mouthguard와 다소 조정이 가능한 mouth formed mouthguard가 있다 Custom-made type의 마우스가드는 적합성이 뛰어나며 정확한 교합, 하악위를 재현할 수 있다는 장점이 있다. 마우스가드는 입술과 구강연조직을 치아로부터 보호하고, 치아에 가해지는 충격을 분산시켜 파절이나 탈구가능성을 줄여준다. 또한, 악골의 골절과 변위를 방지하고 충격을 흡수한다. 성장기 아동의 경우 치아손상의 30% 정도가 스포츠나 레포츠에 의한 것이라는 보고가 있으며 이 경우 치아나 잇몸은 물론 성장 중인 치조골에 악영향을 주게 된다. 이 때 외상처치는 어려우며, 그 예후 또한 불명확하다. 따라서 성장기 아동의 마우스가드 장착은 외상 예방차원에서 중요하다. 이에 저자는 단국대학교 치과병원에 내원한 환아에게 ERKODEN^(?)사의 ERKOFORM-RVE를 이용한 흡입성형 마우스가드(vacuum type mouthguard)를 적용한 임상경험을 보고하는 바이다. Dentofacial trauma can result in tooth fracture, avulsion, facial bone fracture. The Unites states and Japan mandated the use of mouthguards for contact sports. But, Korean didn't. Mouthguards divided into ready-made type and custom-made type. Mouthguards protect the lips, intraoral soft tissues, teeth and provide the mandible with resilient support to prevent jaw fracture and dislocations. Sports-related accidents have been reported to be one of the most common causes of dentofacial trauma. Sports trauma of involving teeth with incomplete root formation cause long chair time, multiple visit, economic considerations, additional dental services. So, mouthguards can offer considerable protection against sports-related trauma.

타액 오염하에서 수복방법에 따른 컴포머의 미세누출에 관한 연구

공석배,김종수,유승훈 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.1

소아 환자의 인접면 우식을 치료할 때 컴포머는 불소를 방출하는 재료로 유용하게 사용될 수 있다. 하지만 구강내 환경은 항상 습윤한 상태로 타액은 컴포머와 치질 사이의 접착을 방해할 수 있다. 수복시에 타액이 게재하게 되면 미세누출이 발생할 가능성이 높아지게 되며 그로 인해서 수복의 실패가 일어날 수 있다. 이에 본 연구에서는 컴포머를 수복할 시에 타액의 영향과 수복 방법에 따른 미세누출 정도를 평가하기 위해서 시행하였다. 컴포머로서 Dyract AP^(®)(Dentsply. Germany)를 사용하였으며 Dentin bonding agent로는 Prime and Bond^(®) NT (Dentsply, Germany)를 사용하였고. 광중합을 위해서 Elipar Trilight (3M ESPE, USA)를 사용하였다. 구강내 환경을 재현하기 위해서 saliva pool을 제작하였다. 소구치 2개를 인접하여 시편을 제작한 후에 2급 와동을 형성하여 수복 환경을 다르게 하여 컴포머를 충전한 후에 500회 thermocycling하였다. 그 후 0.5% methylene blue용액에 24 시간 동안 담근 후에 실체 현미경을 통해서 교합면과 치은면에서의 미세누출 정도를 측정하였다. Kruskal-Wallis Test와 Mann-Whitney Test를 이용하여 각 군간 유의성을 검정하여 다음과 같은 결과를 얻었다. 1. 교합면에서의 각 군간 통계학적 차이는 없었다(p>0.05). 2. 치은면에서 Oraseal^(®)을 이용하여 수복한 3군이 타액 오염을 시키지 않은 4군과 통계학적 차이가 없었다(p>0.05). 3. 치은면에서 1군과 2군 사이에는 통계학적 차이가 없었다(p>0.05). 4. 치은면에서 Oraseal^(®)을 이용하여 수복한 3군이 1,2군보다 통계학적으로 더 낮은 미세누출 정도를 보였다(p<0.05). Compomer that release fluoride could be used on proximal caries of child effectively. But oral cavity is always wet, so saliva inhibits bonding of tooth and compomer. When the saliva exist on bonding, it can be occured microleakages. The purpose of this study was to evaluate the influence of salivary contamination on compomer restoration and degree of microleakage according to restoration methods. Dyract AP^(®) and prime and bond^(®) NT was applied by the manufacture s instructions. Elipar Trilight was applied for light curing. Saliva pool was made for reconstruction of oral cavity. Two premolar was embedded in acrylic resin. After class II cavity preperation, Dyract AP^(®) was restored under several condition, the specimen was thermocycled 500 times with 30 second dwell time. 0.5% methylene blue was used for microleakage test. Micoleakage was measured by the ratio of the infiltration length to occlusal and gingival side interface. Data were analyzed statistically using Kruskal Wallis Test, Mann-Whitney Test. The Result were as follows; 1. In occlusal side, there were no statistical differences. 2. In gingival side, there were no statistical differences in Group III(ContactMatrix^(TM), Rubber dam, Oraseal^(®), Group IV (No saliva contamination). 3. In gingival side, there were no statistical differences in Group I(ContactMatrix^(TM)), II(ContactMatrix^(TM), Rubber dam). 4. In gingival side, there were statistical differences in Group I(ContactMatrix^(TM)), II(ContactMatrix^(TM), Rubber dam).

소아 피부 경화증 환자의 치험례 : CASE REPORT

김은영,김종수,유승훈 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.2

피부 경화증(scleroderma)은 만성 결체조직 질환으로 정확한 원인은 밝혀지지 않았으나 자가 면역 질환으로 알려져 있다. 대개 30"50세의 여성에서 호발하며 소아에서는 매우 드물다. 장기의 이환 여부에 따라 국소성과 전신성 피부 경화증으로 분류할 수 있다. 국소적 형태는 예후가 양호하고 피부에만, 또는 피하 근육까지 이환되며, 내부 장기에는 이환 되지 않는다. 전신적인 형태는 피부와 구강점막 및 위장계, 호흡계, 심혈관계 등을 포함하늘 전신 다발적 발생 (multi systemic involvement)이 특징적이다. 안면피부 이환시 작고 예리한 코, 무표정한 응시(expressionless stare), 좁아진 입모양(narrow oral aperture) 등이 특징적이다. 대개 레이노 현상(Raynaud's phenomenon)이 존재하며 질환이 진행되면서 개구장애와 혀, 치은의 경화가 나타나게 된다. 피부 석회증(calcinosis cutis), 레이노현상(Raynaud's phenomenon), 식도 기능부전(esophageal dysfunction), 공지증(sclerodactyly), 모세혈관 확장증(telangioectasia)이 복합된 질환을 크레스트 중후군(CREST syndrome)이라 부른다. 피부 경화증의 치료는 국소적 및 전신적 스테로이드 치료, collagen cross-link inhibitor (D-penicillamine), 면역억제제 등을 사용한다. 개구제한의 치료는 설압자를 이용한 mouth stretching exercise를 통해 개선될 수 있다. 본 증례에서는 국소성 피부 경화증으로 진단되고 개구제한이 있는 6세 남아에게 아산화질소와 enflurane을 이용한 깊은 진정요법을 이용하여 상하악 제 1, 2유구치의 우식치료 치험례를 보고한다. Scleroderma is a connective tissue disease of unknown etiology, but known as a kind of auto-immune disease. It is most common in women especially in 30∼50 years, and very rare in childhood. It can be classified into two main classes: localized scleroderma & systemic sclerosis: Localized type has better prognosis, and usually involves skin only, or in some cases, the muscle below, except inner organs. Systemic type involves skin, oral mucosa and major internal organs. Involving facial skin, we can see small and sharp nose, expressionless stare and narrow oral aperture. Usually they have Raynaud's phenomenon, and in progress, show mouth opening limitation and sclerosis of tongue and gingiva. It is called CREST syndrome showing calcinosis cutis, Raynaud's phenomenon, esophageal dysfunction, sclerodactyly, and telangioectasia. Treatment of scleroderma is systemic and localized steroid therapy, use of collagen-link inhibitor (D-penicillamine), immune depressor and etc. Mouth opening limitation can be improved by mouth stretching exercise. We report a 6 years old boy, diagnosed with localized scleroderma who had mouth opening limitation. We could get additional mouth opening, and have done successful restorative treatment of mandibular and maxillary 1st and 2nd deciduous molar under deep sedation with nitrous oxide and enflurane.

우각차단을 동반한 급사증후군 2예

박상선,남기병,최기준,송재관,김재중,박승정,박종훈,김유호 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.5

Pre- and Post-Angioplasty Perfusion CT with Acetazolamide Challenge in Patients with Unilateral Cerebrovascular Stenotic Disease

You, Seung-Hoon,Jo, Sung-Min,Kim, Young-June,Lee, Jong-Hyeog,Jo, Kwang-Deog,Park, Woong-Sub The Korean Neurosurgical Society 2013 Journal of Korean neurosurgical society Vol.54 No.4

Objective : Perfusion computed tomography (PCT) has the ability to measure quantitative value and produce maps of mean transit time (MTT), cerebral blood flow (CBF), and cerebral blood volume (CBV). We assessed cerebral hemodynamics by using these parameters and acetazolamide (ACZ) challenge for pre- and post-procedural evaluation in patients with unilateral cerebrovascular stenotic disease. Methods : Thirty patients underwent pre-procedural PCT with ACZ challenge, and 24 patients (80%) was conducted follow up PCT after angioplasty with same protocol. The mean MTT, CBF, and CBV were measured and compared in both middle cerebral arterial (MCA) territories before and after ACZ challenge. Hemispheric ratio and percent change after ACZ challenge were calculated before and after angioplasty. Results : The mean stenosis rate was 76.6%. Significant increases in MTT (32.6%, p=0.000) and significant decreases in CBF (-14.2%, p=0.000) were found in stenotic side MCA territories. After ACZ challenge, there were significant changes in MTT (37.4%, p=0.000), CBF (-13.1%, p=0.000), and CBV (-10.5%, p=0.001) in pre-procedural perfusion study. However, no significant increases were found in MTT, or decreases in CBF and CBV in post-procedural study. There were no significant changes after ACZ challenge also. In addition, the degrees of these changes (before and after ACZ challenge) were highly correlated with the stenotic degrees in pre-procedural perfusion study. Conclusion : PCT with ACZ challenge appears to be a useful tool to assess the cerebral perfusion status especially in patients with unilateral symptomatic stenotic disease.

Effects of human neural stem cell transplantation in canine spinal cord hemisection.

Lee, Seung-Hoon,Chung, You-Nam,Kim, Yoon-Ha,Kim, Young-Ju,Park, Jong-Pil,Kwon, Dae-Kee,Kwon, Oh-Seo,Heo, Jae-Hyeok,Kim, Yoon-Hee,Ryu, Sun,Kang, Hyo-Jin,Paek, Sun Ha,Wang, Kyu-Chang,Kim, Seung U,Yoon, Butterworths [etc.] 2009 Neurological research Vol.31 No.9

<P>Previous works have reported that the transplantation of neural stem cells (NSCs) may improve functional recovery after spinal cord injury (SCI), but these results have been mainly obtained in rat models. In the present work, the authors sought to determine whether the transplantation of human NSCs improves functional outcome in a canine SCI model and whether transplanted NSCs survive and differentiate.</P>

다른 고형 장기의 전이 없이 피부전이를 보인 침윤성 방광암

유승현(Seung Hyun You),박승철(Seung Chol Park),백상훈(Sang Hoon Baick),임정식(Joung Sik Rim) 대한비뇨기종양학회 2006 대한비뇨기종양학회지 Vol.4 No.3

소다석회유리와 슬래그를 혼입한 알칼리-활성 재료의 미세구조 형성 및 미세역학특성 분석

서승훈(Seo, Seung Hoon),이유진(Lee, Yu Jin),장재국(Jang, Jae Guk),이승연(Lee, Seung Yeon),유일환(You, Il Hwan),지광습(Zi, Goang Seup) 한국콘크리트학회 2023 한국콘크리트학회 학술대회 논문집 Vol.35 No.1