양측성 관상동정맥루 1예

최용원,오석규,이재훈,이상재,권경희,최은경,김남호,정진원 圓光大學校 醫科學硏究所 2002 圓光醫科學 Vol.17 No.1

저자들은 호흡곤란, 흉부불쾌감, 심계항진 등을 주소로 내원한 환자에서 경흉부 및 경식도 심초음파 검사상 주폐동맥에서 이완기에 전행하는 지속적인 혈류의 흐름을 관찰하고, 관상동맥 조영술을 통해 좌전하행지 중간부위와 우관상동맥 근위부에서 각각 기시하여 공통경로를 이루면서 주폐동맥으로 유입되는 양측성 관상동정맥루를 보이는 드문 1예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. A coronary arteriovenous fistula is infrequently encountered vascular communication between a coronary artery and a cardiac chamber, a great artery or the vena cava. It is the most common congenital anomaly that can affect coronary perfusion. Bilateral involvement of coronary fistula constitutes an uncommon subgroup of coronary arteriovenous fistulas. A 69 year-old female patient presented with chest discomfort, palpitation, and dyspnea. In the echocardiography, doppler color flow imaging visualized abnormal flow signals with mosaic appearance in the main pulmonary artery during diastolic phase. Coronary angiography revealed arteriovenous fistula arising from the left anterior descending artery and the right coronary artery. Both coronary arteriovenous fistulas drained into the main pulmonary artery. We report a case of bilateral coronary arteriovenous fistula that was confirmed by echocariography and coronary angiography.

Nanogenerators: Fully Rollable Transparent Nanogenerators Based on Graphene Electrodes (Adv. Mater. 19/2010)

Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19

<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>

프로그램화 된 신체운동이 ADHD 아동의 주의산만행동과 과잉행동에 미치는 효과

최재원(Jae Won Choi),강경두(Kyoung Doo Kang),정혜연(Hye Yeon Jung) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.47

The purpose of this study is to deeply analyze a change of the programmed physical exercise in attentiondeficient behavior and hyperactivity of children with ADHD, through the single-subject research design method. The research subjects were 4 elementary school students who are under being cured due to being judged to be ADHD at Child Psychiatric Clinic for C University Hospital where is located in Seoul at that time of beginning experiment in order to be conformed with the objective of research. For visual observation, the attention-deficient behavior was used the frequency-typed case sampling method(Shin So-yeon, Park Jaeguk, Kim Yeong-mi, Lee Hwa-eun, 2007). Observation of hyperactivity was used the contents, which Carlson and Hotfield(1991) defined, by referring to the contents by Mun Jae-gyeong(1998). The following are the results that were elicited through the research procedure of this study. First, the programmed physical exercise was indicated to reduce attention-deficient behavior in children with ADHD. Second, the programmed physical exercise was indicated to reduce hyperactivity in children with ADHD.

백서 척수후근절로부터 슈반세포의 효과적인 체외 배양법

김성민,이종호,김남열,안강민,최원재,최시호,차미주,이주영,황순정,장정원,명훈,최진영,서병무,정필훈,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4

Schwann cells(SCs), an important component of the peripheral nervous system, intract with nerous to mutually support growth and replication for the peripheral nerve regentation. Recently, ading SCs to the lumen of guidance channel is widely tried to improve regeneration or to make regeneration possible over otherwise irreparable gaps. however, it is not easy to isolate and multiplicate SCs as much as enough to help the axonal regeneration. For the allogeneic SCs source for tubular nerve guidance, we developed a little bit improved technique of harvesting and multiplicating SCs. by culturing dispersed dorsal root ganglia in specially designed medium with growth factors and serial processing, we repeatedlly generate relatively homogenous SC cultures. Our technique was compared with other methods of literature using immunostaining methods such as GFAP, S100, BDNF and the total SC count assessment at different time interval after primary culture.

열공형과 비열공형 피질하 혈관성 치매에서 위험인자의 차이에 관한 비교 연구

배희준,정지향,유경호,나덕렬,김상윤,최경규,양동원,손의주,이상도,김재우,박경원,김응규,이재홍,박미영,한일우,함동석,최문성,하충건,최성혜,이애영,이병철,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

Backgrounds and Objectives: Vascular dementia is a group of dementing disoders arising from various stroke syndrome. Among these. subcortical ischemic vascular dementia (SIVD) is regarded as a relatively distinct clinical entity. However, MRI patterns of SIVD are not homogenous. In some patients, lacunes are dominant, and in others, subcortical white matter changes are. This study was designed to compare risk factor profiles between SIVD with and without multiple lacunes. Methods: We divided 47 subjects (22 males, mean age. 68 years) recruited from VADAPET (Multicenter Trial For Evaluation Of The Changes In the PET Images Of Subcortical Vascular Dementia Patient) study into two groups one with more than 5 lacunes in deep gray matter (lacune group) and the other with 5 or less(non-lacune group) Clinical characteristics and laboratory findings of two groups were compared. Results: Nineteen of 47 patients (40%) belonged to the lacune group. The lacune and non-lacune groups d d not differ in the following variables: age, hypertension, diabetes mellitus, hyperlipidemia heart disease, history of stroke or TIA, history of trauma or major surgery, family history of hypertension stroke, or dementia, age at diagnosis of dementia, body mass index, white blood cell count, ESR, CRP, fibrinogen, hemoglobin A1C, total cholesterol. LDL cholesterol creatinine, proteinuria, glucosuria, and microhematuria. However, male sex, smoking alcohol. hemoglobin, and HDL cholesterol were possibly associated more with lacune group SIVD than with non-lacune group (p<0 1) Multivariate analyses revealed that smoking, hemoglobin, and HDL cholesterol were independent predictors of SIVD with multiple lacunes Conclusion: Our study suggests that SIVD with multiple lacunes may be significantly different in smoking habits hemoglobin, and HDL cholesterol from SIVD without multiple lacunes.

직접메탄을 연료전지용 귀금속 산화극 대체촉매의 개발

최재식,윤봉국,하승백,정원섭,이호인 한국공업화학회 2003 응용화학 Vol.7 No.2

Direct Methanol Fuel Cell (DMFC) is based on the technology of Polymer Electrolyte Membrane Fuel Cell. DMFC has several features of environmentally benign generation of electricity and high mobility for portable electronics etc., but its main problem to overcome for commercialization is the high cost of noble metal catalysts. In this study, it was found that the Pt/C catalyst supported on carbon nano fiber had the highest catalytic activity among the catalysts supported on several carbons. The newly developed Pt/C alternative catalyst had higher catalytic activity for methanol oxidation than the Pt/C catalyst supported on Vulcan XC-72.

스포츠 경기에서 집중력을 높이기 위한 전략

최재원,김재훈,박봉섭 중앙대학교 스포츠과학연구소 2002 體育硏究 Vol.- No.16

This study is to take a general look at "tention"for which the types of attention behavior and the relevant theories has been studied to lay out a scheme for attention development. In fact, the theories on attention behavior have not only been well organized in the field of sports, but it also lacked empirical studies, which means the theory itself has been revised by trials and errors in the actual competition field rather than to be systematically developed in the sphere of logic and theory. Especially, the applicative studies on the adjustment of attention has only been set forth recently, which means more applicative studies are required to better understand the attention development procedures of athletes. The follow-up studies will require a strategy based on the quality of the study, which may be able to achieved through a good combination of single-testee method and case study. Through all this, we should be able to provide an attention improvement training method to each of the athletes in need based on the theories and methodologies mentioned above, for which profound studies in this Held will be required.

큰 파워 트레이닝이 Golf Iron Shot의 향상에 미치는 영향

최재원,설정덕,심재영 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The purpose of this study is to measure the improvement of Head speed, Ball carry, Club path, Club face, Impact point, Tempo time in golf swing according to muscle power training. Ten students who specialize in golf participate in this study. They are divided in this study; One group (P.T.G) Consists of 5 students who have been trained by muscle power for 12 weeks and the other group (N.P.T.G) is used for contrast. The results compared and analyzed between two group is this; 1. Head speed In case of inter group experiments, P.T.G have showed significant difference after 6 weeks and 12 weeks, p<0.05. In case of group who are trained by muscle power, head speed is significantly improved. But N.P.T.G has showed significant difference. 2. Ball carry In case of inter group experiments, P.T.G have showed significant difference after 6 weeks and 12 weeks, P<0.05. In case of group who are trained by muscle power, Ball carry is significantly improved. Brief to say, P.T.G has showed improvement in contrast to N.P.T.G. 3. Club path, Impact point In the experiments of club and impact point, two group (P.T.G and N.P.T.G) have not showed significant difference after 6 weeks and 12 weeks. 4. Club face In case of inter group experiments, two groups have not showed significant difference after 6 weeks, but they have showed significant difference after 12 weeks. 5. Tempo time In case of inter group experiments, P.T.G have showed significant difference after 6 weeks and 12 weeks, P<0.05. In case of group, two group have not showed significant difference after 6 weeks and 12 weeks.

Monochlorophenol의 목질분해균에 의한 분해 특성

최인규,이재원,최돈하 한국환경농학회 2002 한국환경농학회지 Vol.21 No.4

onochlorophenol인 2-, 3- 및 4-chlorophenol에 대해서 D. contentrica, T. versicolor, P. ostreatus 3균주를 이용하여 저항성, 분해능, 분해산물 등을 비교 분석하였다. T. versicolor는 monochlorophenol의 종류 및 농도의 증가에 따라 전혀 영향을 받지 않고 균사 생장이 이뤄지며, D. contentrica는 3-, 4-chlorophenol에서 100 ㎎/L 이상으로 농도가 증가하면 균사 생장이 느려져 제한을 받고 있는 것으로 나타났다. P. ostreatus는 두 균주와 달리 대조구 자체의 생장이 14일 정도로 상당히 느렸으나 2-, 3-chlorophenol을 첨가했을 때 오히려 1~2일 정도씩 생장이 촉진되는 결과를 나타냈다. 2-Chloro- phenol 이나 3-chlorophenol에서는 P. ostreatus가 제일 우수한 분해능을 보였으며 4-chlorophenol의 경우는 T. versicolor가 2균주에 비하여 월등하게 우수하게 나타나 균주가 따른 mono- chlorophenol의 분해능에 있어서 차이가 있고, 염소의 치환 위치에 따라 ortho나 meta 보다는 para위치에 염소가 치환된 4-chlorophenol이 D. contentrica나 P. ostreatus의 경우 분해가 느린 것으로 나타났다. 그러나 T. versicolor는 2-, 3- 및 4-chlorophenol의 저항성 시험에서 균사 생장이 제한을 받지 않고 우수한 생장력을 갖고 있는 것처럼 분해능 시험에 있어서도 우수하였다. 균주별로 pH와 균사량은 P. ostreatus > T. versicolor > D. concentrica 순으로 높았으며, 균주내에서 배양일수별로 pH의 변이는 유동적이었고 균사량은 조금씩 증가하였으나 뚜렷한 차이는 없었다. 즉, 2-, 3- 또는 4-chlorophenol의 목질분해균을 이용한 분해에 있어서 pH 및 균사량은 monochlorophenol 의 분해능과는 상관관계가 낮은 것으로 나타났다. T. versicolor 와 P. ostreatus의 경우는 높은 laccase의 유도 효과를 나타내면서 monochlorophenol의 분해에 영향을 주는 것으로 생각된다. monochlorophenol의 분해산물로는 1,3,5-trihydoxyl benzene, 1-ethyl-1-hydroxyl pentane, 2-pro-penoicacid, methylmalonic acid, 2-methyl-4-keto-pentan-2-ol 등과 지방산의 일종인 tetradecanoic acid, hexadecane, hept-adecanoic acid, octadecanoic acid 등이 확인되었다. Biodegradation of monochlorophenols by wood rot fungi such as Daldina concentrica, Trametes versicolor and Pleurotus ostreatus was evaluated by determining their resistance or toxic test and biodegradability. The metabolites of monochlorophenols were also analyzed. Among the three fungi, T. versicolor was the most resistant to 200 ppm of 2-, 3- and 4-chlorophenols, and did not show any inhibitory mycellium growth. But D. concentrica had a little inhibition effect at more than 100 ppm of 3- or 4-chlorophenol. Control cultures of P. ostreatus took even 14 days for the completion of mycellium growth, but the hyphal growth was improved when 2- or 3-chlorophenol were added to the culture. In biodegradation analysis, P. ostreatus showed the highest degradation of 2- or 3-chlorophenol, while T. versicolor was the most effective in 4-chlorophenol. D. contentrica and P. ostreatus slowly degraded 4-chiorophenol. However, T. versicolor had similar degradation capability in the three monochlorophenols, suggesting that the biode- gradation mode is dependent on the fungi as well as the type of monochlorophenol. Several metabolites such as 1,3,5-trihydroxyl benzene, 1-ethyl-1-hydroxyl pentane, 2-propenoicacid, methylmalonic acid and 2-methyl-4-keto-pentan-2-ol were found as products of primary oxidation of 2-, 3- and 4-chlorophenols by intact fungal cultures. Fatty acids including tetradecanoic, heptadecanoic and octadecanoic acids were also detected. The order of increase of mycellium weight during incubation were P. ostreatus > T. versicolor > D. concentrica. The pH in the culture was not constantly changed depending on incubation days, but the mycellium weight was slightly increased, indicating that the biodegradation of monochlorophenol night have low relationship with the mycellium growth. Laccase activities of T. versicolor and P. ostreatus were continuously increased depending on the incubation days, suggesting that the ligninolytic enzyme activity play an important role in the biodegradation of monochlorophenol.

납골시설의 공간구성에 관한 건축계획적 연구 : 서울, 경기도의 납골당을 중심으로

최진원,박재승 한국의료복지시설학회 2004 의료·복지 건축 Vol.10 No.2

The purpose of this study is to the spatial composition of charnel facilities. The study method is as follow: First, To Examine existent research material about charnel house. Second, To Investigate controversial point of equipment and development direction through research the case of cremated human remains deposit rooms in 12 charnel houses constructed since 1990. So, to propose the planning direction of spatial composition based on the analysis results and utilize to basis data that is necessary in research of same kind hereafter.