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>

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.

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.

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.

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.

다중 도메인 서비스를 위한 이름 기반의 가상 호스트 구축방법

최재원 경성대학교 공학기술연구소 2010 공학기술연구지 Vol.16 No.-

Virtual host is the function that makes even one web server seem like that many web servers exist and provide services. In this paper we researched on the implementation methods and techniques of Name-based Virtual Host for providing homepage services with many different domain names even though one web server exist.

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.

가정보육시설 평가척도 개발연구

최진원,임재택 부산대학교 영유아보육연구소 1996 영유아보육연구 Vol.2 No.-

The purpose of this study was to develop a practical and applicable rating scale for family day care based on the actual state of facilities and the opinions of child care teachers and professionals. This study was developed as following procedures: First, this procedure was based on both literature review and survey. The subjects of survey were 36 family day care directors and 14 college professors who specialize in early childhood care & education in Pusan. Questionnaire containing 69 items in 10 sub-areas of 4 major areas, "Physical Environment", "Propam for Children", "Safety, Nutrition, Health, and Sanitation" and "Management and Administration", was originally developed by the researchers of this study. Based on responses of the subjects, 50 items were selected. Second, this Rating Scale was consisted of 50 items with 5-point rating selected for the study. 50 directors responded the scale voluntarily. Third, the information about statistical result of this rating scale was gathered and reported. Means and standard deviations were calculated in 10 sub-areas and 4 major areas. Correlation coefficient and t-test were used for item analysis. Cronbach α was used for item reliability. The results were as follows: First, the scores of self-evaluation of family day care directors were ranged from 2.28 to 4.68 and the mean of total rating score was 3.54. Second, except 5 items, the results of item analysis indicated that most items of Family Day Care Ratintg Scale were fairly good. Third, for reliability, conbach α of family Day Care Rating Scale was between .84~.90. Futher Family Day Care Rating Scale would be utilized by individual directors of family day care center to do self-evaluation, by supervisors to collect information and guide each family day care center for the improvement, by the goverment to use in planning child care policies.

몬테카를로 방법을 이용한 고강도콘크리트 구조물에 대한 휨변형의 해석적인 연구

최광진,장일영,송재호,홍원기 金烏工科大學校 1995 論文集 Vol.16 No.-

The object of this thesis is an analytical study on flexural deformation of high strength concrete structures using Method. Using the established experimental data that has been presented in various documents the stress-strain relationship curves of high strength(500㎏f/㎠) models are proposed. Based on both methods of logarithm regression analysis and multiple regression analysis adopted in order to establish the relationships between design parameters, responsed random variables and flexural deformation analyzed using monte carlo simulation and simpson composite formula. Additional random variables are introduced to incorporate both the confidence in the analytical accuracy of engineering mechanics associated with structural response quantities and the uncertainty in the construction quality control. The result is expected to accomodate other important design parameter of high strength concrete design in treating reliability theory that practicing engineers and structural engineering.

고속·고정밀 금형가공센터 개발

최원선,김태형,이재윤 한국공작기계학회 2002 한국공작기계학회 춘계학술대회논문집 Vol.2002 No.-

In order to manufacture a precision mold/die by machining, users need high speed & precision mold/die machining center. So, for development of this machine, we intend to use linear motor that is instead of ball-screw, servo-motor and coupling, high-speed spindle of pressurized air journal bearing and composite materials. In this paper we research column moving type and table moving type. The former is mainly piling 3 axes on one moving body, the latter is consist of two independent carriages. Both types are available to high speed & precision machine, but we finally draw a conclusion column moving type due to an advantage of high-speed control of linear motor.