이차구순열 결손의 치료

임석균,박인순,여환호,지재휴,김영균,김수관 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2

Despite the current accomplishments with the repair of cleft lips, the surgical management of the nasal deformity remains a functional and aesthetic dilemma for patients, their families, and reconstructive surgeons. Recent improvements in the understanding and technical execution of te primary cleft lip repair have significantly reduced secondary sequelae and the consequent need for secondary surgical correction. But, secondary surgical corrections are necessary according to numerous factors. Such factors include the secondary surgical corrections are necessary according to numerous factors. Such factors include the severity of the initial deformity, the surgical plan, precision of execution of the primary repair, and success of the postoperative management. We preformed the secondary correction of cleft lip and palate in 11 patients via various methods. In conclusion, primary repair of cleft lip and palate patients is the most important to prevent the secondary deformities, and most of cleft lip and palate with secondary deformities must be treated with combined cheiloplasty and rhinoplasty.

Are Adolescents with Internet Addiction Prone to Aggressive Behavior? The Mediating Effect of Clinical Comorbidities on the Predictability of Aggression in Adolescents with Internet Addiction

Lim, Jae-A,Gwak, Ah Reum,Park, Su Mi,Kwon, Jun-Gun,Lee, Jun-Young,Jung, Hee Yeon,Sohn, Bo Kyung,Kim, Jae-Won,Kim, Dai Jin,Choi, Jung-Seok Mary Ann Liebert 2015 CYBERPSYCHOLOGY BEHAVIOR AND SOCIAL NETWORKING Vol.18 No.5

<P>Previous studies have reported associations between aggression and Internet addiction disorder (IAD), which has also been linked with anxiety, depression, and impulsiveness. However, the causal relationship between aggression and IAD has thus far not been clearly demonstrated. This study was designed to (a) examine the association between aggression and IAD and (b) investigate the mediating effects of anxiety, depression, and impulsivity in cases in which IAD predicts aggression or aggression predicts IAD. A total of 714 middle school students in Seoul, South Korea, were asked to provide demographic information and complete the Young's Internet Addiction Test (Y-IAT), the Buss-Perry Aggression Questionnaire, the Barratt Impulsiveness Scale-11, the State-Trait Anger Expression Inventory-2, the Beck Anxiety Inventory, the Beck Depression Inventory, and the Conners-Wells Adolescent Self-Report Scale. Three groups were identified based on the Y-IAT: the usual user group (n=487, 68.2%), the high-risk group (n=191, 26.8%), and the Internet addiction group (n=13, 1.8%). The data revealed a linear association between aggression and IAD such that one variable could be predicted by the other. According to the path analysis, the clinical scales (BAI, BDI, and CASS) had partial or full mediating effects on the ability of aggression to predict IAD, but the clinical scales had no mediating effect on the ability of IAD to predict aggression. The current findings suggest that adolescents with IAD seem to have more aggressive dispositions than do normal adolescents. If more aggressive individuals are clinically prone to Internet addiction, early psychiatric intervention may contribute to the prevention of IAD.</P>

메탄으로부터 합성가스 생산을 위한 압축점화 개질기 연구

임문섭,홍성인,홍명석,전영남 조선대학교 환경공해연구소 2007 環境公害硏究 Vol.20 No.1

Recently, various technologies have been devised to convert methane, a main ingredient of natural gas and biogas, into hydrogen as part of efforts to develop new low pollution energies and reduce greenhouse gases. This study, different from existing methods of reformation, suggests a new form of a partial oxidation compression ignition reformer, to which the concept of super-adiabatic combustion is applied. In addition, the study also conducts experiments by variables about the oxygen/methane ratio, the total flow rate. the intake preheating temperature and the oxygen enrichment ratio, all of which affect the production of hydrogen, in order to understand the optimal feature of the reformer's movement. Results showed that the concentration of hydrogen was 20.84%, under the optimal standard condition of oxygen/methane ratio 0.26, total flow rate 106.5 L/min and intake preheating temperature 355℃. Under the same condition, the concentration of hydrogen became 20.31% when the oxygen enrichment ratio was 55.6%.

소아 및 청소년에서 비만의 평가 지표에 따른 신기능의 변화에 대한 연구

정영수,임인석 중앙대학교 의과대학 의학연구소 2007 中央醫大誌 Vol.32 No.4

Purpose: Obesity in children and adolescents can cause diabetes mellitus, hyperlipidemia, cardiovascular diseases and renal diseases. The aim of the present study is to examine the change of renal function according to obesity index in children and adolescents. Methods: Data of 72 children and adolescents aged between 5 years and 16 years without clinical evidence of renal diseases were included in the study. From January 2007 to June 2007, blood samples were collected from children and adolescents who were seen at the Department of Pediatrics at Chung-Ang University Yongsan Hospital. Obesity degree and body mass index (BMI) were measured, and glomerular filtration rate (GFR) was estimated from the formula as described by Léger and colleagues. Results: The mean GFR value was significantly higher in the obese group (BMI >95 percentile, 94.09±28.04 ml/min) than in the non-obese group (BMI <95 percentile, 74.29±19.56 ml/min) divided by BMI (p=0.001). The mean GFR value was significantly higher in the obese group (obesity degree >120 percent, 93.57±28.26 ml/min) compared with the non-obese group (obesity degree <120 percent, 73.72±18.77 ml/min) divided by obesity degree (p=0.001), too. GFR was correlated positively with BMI (r²=0.404, p=0.000) as well as obesity degree (r²=0.119, p=0.003). Moreover, there was a positive correlation between BMI and GFR in the non-obese group (r²=0.350, p=0.000). Conclusion: Obesity may lead to an alteration of renal hemodynamics such as hyperfiltration, appropriate control and management for obesity is necessary.

일차 양측성 구순열의 일단계 재건에 대한 증례보고

임석균,이기혁,김영균,김수관,이병준,여환호,서재훈 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3

Bilateral cleft lip reconstruction can be performed in one-or two-stages. The choice depends on the surgeon's proficiency and experience. However the type and severity of the cleft must be considered. Complete or incomplete symmetric, bilateral clefts in which the premaxilla is within the alveolar arch or slightly protruded can be successfully treated with simultaneous lip reconstruction on both sides. There are some advantages that one-stage lip reconstruction facilitates creation of a symmetric and balanced lip, retraction of protruding premaxilla and the parent's psychologic satisfaction. However, there are some disadvantages such as micrognathia of the upper jaw by severe scar formation and poor adaptation of flap margins by severe tension. The surgeon must be able to judge and exploit the advantages offered by one-stage approach. We present the case report of one-stage reconstruction of primary bilateral cleft lip with literature reviews.

저전력 직접 가변 안테나 변조를 위한 DGS 가변 임피던스 선로에 관한 연구

임재봉,박준석,김영주 국민대학교 생산기술연구소 2004 공학기술논문집 Vol.27 No.-

In this paper, we proposed a variable-impedance microstrip circuit using DGS (Defected Ground Structure) and control device. The proposed variable-impedance transmission line with a simple planar antenna can change the resonant frequency and the input impedance of antenna to achieve the DAM (Direct Antenna Modulation). As an application example of the variable-impedance microstrip, we have implemented the ASK modulation of RF signal for the low-power consumption RFID applications. The experimental results show that a patch antenna with a resonant frequency of 2.45 GHz and a 30 MHz bandwidth can transmit a 1 Mbps digital modulated signal with the ultra low-power consumption.

식도를 포함한 전위장관을 침범한 전이성 악성 흑색종 1예

최정영,김준기,신성하,고영춘,조상욱,서강석,강명원,임연근,여향순,김경수 全南大醫大 2001 전남의대학술지 Vol.37 No.1

오스테나이트계 스테인리스강과 SM45C의 연속파형 Nd:YAG 레이저 용접특성비교

유영태,오용석,노경보,임기건 한국공작기계학회 2003 한국생산제조학회지 Vol.12 No.3

Welding characteristics of austienite 304 stainless steel and SM45C using a continuous wave Nd:YAG laser are experimentally investigated. Laser beam welding is increasingly being used in welding of structural steels. The laser welding process is one of the most advanced manufacturing technologies owing to its high speed and deep penetration. The thermal cycles associated with laser welding are generally much faster than those involved in conventional welding processes, leading to a rather small weld zone. Experiments are performed for 304 stainless steel plates changing several process parameter such as laser power, welding speed, shielding gas flow rate, presence of surface pollution, with fixed or variable gap and misalignment between the similar and dissimilar and plates, etc. The Nd:YAG laser welding process is one of the most advanced manufacturing technologies owing to its high speed and penetration. This paper describes the weld ability of SM45C carbon steel for machine structural use by Nd:YAG laser. The follow conclusions can be drawn that laser power and welding speed have a pronounced effect on size and shape of the fusion zone. Increase in welding speed resulted in an increase in weld depth/aspect ratio and hence a decrease in the fusion zone size. The penetration depth increased with the increase in laser power.

공동주택 현장 실험을 통한 바닥복사냉방의 성능평가

조영흠,임재한,석호태,여명석,김광우 대한건축학회 2004 대한건축학회논문집 Vol.20 No.11

The objective of this study is to analyze the performance evaluation of the Radiant Floor Cooling and the dehumidification system included in the integrated system may be utilized as a supplementary cooling device through field experiments. The experiments are performed to evaluate the performance of the radiant floor cooling and confirm the possibility of continuous cooling through the actual field experiments, moreover, analyze specific characters of the radiant floor cooling system according to varying the load conditions which is able to happen to field. Experiment results show that the permissible ambient temperature range was determined by cooling load calculations, and the cooling capacity was calculated from steady-state heat transfer equations. Under these conditions, experiments were performed for an actual apartment building assuming two occupants. During 80% of the cooling period, radiant floor cooling provides sufficient and continuous cooling. The results of analyzing the indoor thermal environment in the actual apartment building show that the set room air temperature is maintained while the floor surface temperature, vertical temperature distribution and PMV remain within the comfort range.

동일한 혈관 내에 발생한 이식형 약제 주입기 카테터의 위치이상

오대석,김영재,김명훈,조광래,임세훈,이정한,이근무,정순호,신치만 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

저자들은 56세 여성 환자의 왼쪽 쇄골 하 정맥에 시행한 이식형 약제주입기 카테터의 삽입 후 발생한 비정상 위치에 대한 증례를 보고하고자 한다. 카테터의 끝은 환자의 늘 어진 가슴, 체위, 신체의 움직임, 카테터의 유동성 등의 영향으로 천자된 정맥 내에서 견인되고 뒤쪽으로 이동하였다. 환자는 어떠한 증상도 호소하지 않았지만 비정상 위치의 카테터는 심각한 합병증을 유발할 수 있기 때문에 제거되었다. 따라서 시술자는 약제주입기 삽입 전에 환자의 신체 상태와 단순 흉부 촬영상을 확인하고 카테터의 비정상 위치가 발생할 수 있는 위험 징후를 알아차려야 하겠다.