하악전돌증 환자에서 기관내 삽관을 위한 기도평가에 관한 연구

이승주,김현정,염광원,Lee, Sung-Ju,Kim, Hyun-Jeong,Yum, Kwang-Won 대한치과마취과학회 2003 Journal of Dental Anesthesia and Pain Medicine Vol.3 No.1

Background: The fundamental responsibility of an anesthesiologist is to maintain adequate gas exchange. Failure to maintain a patent airway can result in brain damage or death. Generally, in patients with mandibular prognathism, who have the protruded mandible, the mask ventilation was thought to be not easy. The purpose of this study was to observe the degree of the difficulty of airway management in mandibular prognathism using some anatomic criteria for defining and grading difficulty of airway and difficulty of endotracheal intubation with direct laryngoscope. Methods: The observations and measurements are done to the 54 patients with mandibular prognathism, who were scheduled for corrective esthetic surgery. The case study is done to the 30 patients with normal mandible for control group. In all patients, mouth opening distance (MOD), mouse opening angle (MOA), mandibular length (ML), mandibular depth (MD), thyromental distance (TMD), thyromental area (TMA), Mallampati grades, and Cormack and Lehane grades are measured. T-test and Chi-square test are done (P < 0.05). Results: In the mandibular prognathism cases, the measurements of MD, TMD and TMA are more greater than those of controls (P < 0.05). Mallampati grades with tongue thrust are higher in the female mandibular prognathism cases than those of female controls. Most of the grades of the mandibular prognathism cases with Cormack and Lehane grading system are I or II being easy intubation cases (P < 0.05) Conclusions: In the patients of mandibular prognathism, the intubation with laryngoscope will be easer than that of normal mandible in general. It is for that their laryngeal aperture can be easily visible when the laryngoscope are used.

생체 내 분해 콜라겐기질을 이용한 섬유주절제술의 임상적 소견 및 임상 효과에 대한 분석

이승주,우제문,민정기,기창원,임진호,Sung Ju Lee,Je Moon Woo,Jung Kee Min,Chang Won Kee,Jin Ho Yim 대한안과학회 2012 대한안과학회지 Vol.53 No.2

Purpose: To observe the effects of biodegradable collagen matrix (OculusGenTM) on filtering bleb formation and maintenance and to investigate its clinical effects and usefulness in trabeculectomy. Methods: Ophthalmologic examinations were preformed 1 day, 2 weeks, 1 month, 2 months, 3 months, 6 months, and 12 months postoperatively in the case and control groups. The clinical findings of the filtering bleb were observed, and the clinical effects measured by mean intraocular pressure and complications were evaluated in both groups. Results: The success rates were 76% in the case group and 88% in the control group, and there were no significant differences between the case and control groups. In the case group, postoperative conjunctival injection persisted for more than 1 month with increasing severity, while ultrasound biomicroscopy revealed increased echogenicity of the subconjuctival and tenon tissue with no definite space-occupying effect. Conclusions: Trabeculectomy utilizing collagen matrix showed similar clinical results compared to the current traditional trabeculectomy; slit-lamp and ultrasound biomicroscopy findings did not reveal any advantageous changes to filtering bleb function. J Korean Ophthalmol Soc 2012;53(2):297-305

마이토마이신을 사용한 섬유주절제술 후 여과포 관리에 대한 석상 봉합의 유용성

이승주,우제문,김상우,안재환,임진호,Sung Ju Lee,Je Moon Woo,Sang Woo Kim,Jae Hwan An,Jin Ho Yim 대한안과학회 2013 대한안과학회지 Vol.54 No.2

Purpose: To evaluate the usefulness of external bandage suture for bleb-related management that follows trabeculectomy with mitomycin C. Methods: External bandage sutures were performed on 10 patients having hypotony maculopathy, persistent low intraocular pressure (IOP) caused by either hyperfiltration or focal leakage, or a persisting large bleb caused by hyperfiltration and who received trabeculectomy using mitomycin C as an adjuvant treatment. The changes in IOP measured before and 4 weeks after the procedure along with complication incidences were evaluated. Results: The mean IOP 4 weeks after the procedure compared with the mean IOP prior to the procedure increased from 5.8 ± 2.0 mm Hg (3.0-9.0 mm Hg) to 14.1 ± 8.5 mm Hg (4.0-32.0 mm Hg), with statistical significance (p = 0.008). After the procedure, improvement in visual acuity was observed but without statistical significance. One patient had persistent focal leakage from an avascular bleb and conjunctival advancement with removal of the avascular conjunctiva was performed. Conclusions: An external bandage suture can be a good alternative for correction of post-trabeculectomy hypotony and severe chemosis with minimal effect on blebs while correcting focal leakage and hyperfiltration.

고분자 결합 Metalloporphyrin을 이용한 유기물질의 산화촉매에 대한 연구

이승주,팽기정,황규자,Lee Sung-Ju,Paeng Ki-Jung,Whang Kyu-Ja 대한화학회 1992 대한화학회지 Vol.36 No.5

철(III) protoporphyrin과 망간(II) tetrakis(4-N-carboxyphenyl) Porphyrin을 polystyrene divinylbenzene 공중합체 수지와 반응시켜 고분자결합 금속포피린을 합성하였다. 고분자와 결합된 포피린은 공명라만분광기를 이용, 합성과정에서 포피린과 중심금속의 산화상태 등 여러가지 화학적 성질이 변화되지 않았음으로 확인하였다. 합성된 고분자결합 금속포피린은 싸이토크롬 P-450과 같은 산화촉매효소의 모형화합물로서 과산화수소에 의한 olefin의 epoxidation과 alkane의 oxidation의 촉매로서 사용이 가능하였다. 그 효율은 고분자와 결합하지 않은 동종의 포피린에 비하여 현저히 증가되었으며, 특히 포피린이 산화제에 의해 분해되지 않아 재사용이 가능하였다. 실제 효소에서와 같이 imidazole 유도체와 같은 전자주게 배위자가 포피린 중심금속에 배위한 경우 촉매효과가 더욱 향상되었다. Polymer bonded metalloporphyrins are synthesized by reaction between Fe(III) protoporphyrin or Mn(II) tetrakis(4-N-carboxyphenyl)porphyrin with polystyrene divinylbenzene copolymer. The spectroscopic properties of synthetic polymer bonded metalloporphyrins are investigated by using resonance Raman spectrometer. By synthetic polymer bonded metalloporphyrins as catalyst, which are model of cytochrome P-450 and peroxidases, epoxidation of olefins and oxidation of alkanes are achieved with H2O2 as oxidant. The catalytic efficiencies with polymer bonded metalloporphyrins are improved on that with corresponding nonpolymer bonded metalloporphyrins. Especially those can be reused because of stability against oxidant. Electron donating imidazole derivatives, which are attached in 5th position of central metal of metalloporphyrins, enhance the catalytic efficiencies.

윈도우 시스템에서 사용되는 회계 프로그램의 특성을 이용한 포렌식 어카운팅 기법 개선 방안

이승주(Seung-ju Lee),이국헌(Kuk-heon Lee),이상진(Sang-jin Lee) 한국정보보호학회 2017 정보보호학회논문지 Vol.27 No.5

기업에서는 대용량 회계 데이터를 처리하기 위해 각기 다른 회계 프로그램들을 사용한다. 회계 프로그램의 특성으로 인해 회계 프로그램이 사용하는 회계 데이터 이외에도 회계 부정을 탐지하는데 도움이 되는 다양한 정보들이 존재한다. 기존 포렌식 어카운팅 기법은 이러한 정보를 활용하지 않고 회계 원장과 같은 회계 데이터만을 분석했기 때문에 분석할 수 있는 범위에 제한이 있다. 회계 부정 탐지 시, 회계 프로그램의 특성으로 인해 얻을 수 있는 정보들을 활용한다면 회계 데이터 분석만으로는 얻을 수 없는 다양한 정보들을 얻을 수 있다. 본 논문에서는 윈도우 시스템에서 사용되는 회계 프로그램의 특성으로 인해 얻을 수 있는 기타 데이터를 활용하여 회계 부정을 효과적으로 탐지하는 기법을 제시함으로써 효과적인 회계 부정 수사에 기여하고자 한다. Enterprises use different accounting programs to process vast amounts of accounting data. Due to the characteristic of the accounting program, in addition to the accounting data used by the accounting program, there is a variety of information to help detect accounting fraud. Existing forensic accounting techniques have limited scope of analysis because they analyze only accounting data like accounting ledger without using such information. When you do accounting fraud detection, information obtained from characteristics of accounting program can be used to obtain various information that can not be obtained by accounting data analysis alone. In this paper, we try to contribute to effective accounting fraud investigation by suggesting a technique to effectively detect accounting fraud by using other data obtained from characteristics of accounting program used in Windows system.

다운증후군 환자의 전신마취 하 치과치료

이승주(Sung-Ju Lee),이영은(Young-Eun Yi),김혜정(Hye-Jung Kim),서광석(Kwang-Suk Seo),김현정(Hyun-Jeong Kim),염광원(Kwang-Won Yum),김동욱(Dong-Wuk Kim) Asia association of Disability and Oral health 2007 International Journal of Disability and Oral Healt Vol.3 No.2

모바일 앱을 이용한 지능형 VR운동적합 프로토콜이 만성 뇌졸중 환자의 생체학적 건강요인에 미치는 효과

이승주(Lee, Sung-Ju),김영식(Kim, Young-sik) 한국체육교육학회 2016 한국체육교육학회지 Vol.21 No.2

본 연구의 목적은 모바일 앱을 이용한 지능형 VR(Virtual Reality) 운동적합 프로토콜이 만성 뇌졸중 환자의 생체학적 건강요인에 미치는 효과를 실증적으로 규명하는데 있다. 즉, 한방의학적 처방전 매칭코드 기반의 사상체질별 만성 뇌졸중 환자의 생체학적 활성산소 값, 혈액검사 측정치, 스트레스 호르몬 지수 등의 건강요인의 변화와 지능형 가상현실 생리운동적합 프로토콜에 대한 시스템적 효과성 정도를 검증해 보고자 한 것이다. 그 결과 첫째, 사상체질별 만성 뇌졸중 환자의 생체학적 활성산소 값에 통계적으로 유의한 영향을 미쳤다. 둘째, 사상체질별 만성 뇌졸중 환자의 혈액검사 측정치에 유의한 영향을 미쳤다. 셋째, 사상체질별 만성 뇌졸중 환자의 스트레스 호르몬 지수에 유의한 영향을 미쳤다. 결론적으로 사상체질별 만성 뇌졸중 환자의 생체학적 건강요인에 지능형 VR생리운동적합 프로토콜이 매개효과가 있는 것으로 나타났다. Purpose: The purpose of this study is to empirically investigate the effects of intelligent VR (virtual reality) physiological health factors of exercise suitable for chronic stroke patients using a protocol mobile apps. Methods: verifying the effectiveness of oriental medicine prescription matching code based on the idea constitution by physiological active oxygen values in chronic stroke patients, blood tests measure stress hormone index changes in health factors such as Intelligent VR physiological exercise appropriate protocol to try to party. Results: first, ever it had a statistically significant effect on the value of the physiological activity of oxygen constitution by chronic stroke patients. Second, the idea had a significant effect on blood measurements of the constitution by chronic stroke patients. Third, it had a significant effect on stress hormone index of Sasang-specific chronic stroke patients. Conclusion: The specific ideas on constitution health physiological factors of chronic stroke patients showed that VR is an intelligent.

Conformal Coating된 PCB의 기포 검출을 위한 UV 세기의 적합도 판별 기법

이승주(Seung Ju Lee),정경훈(Kyeong Hoon Jung),이동희(Dong Hee Lee),조성령(Sung Ryung Cho) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.11

Conformal Coating된 PCB에서 발생하는 기포에 대한 검출 성능을 보장하기 위해서는 UV 조명의 세기를 적절하게 설정해야 한다. 하지만 PCB마다 코팅 두께의 차이가 존재하므로 적절한 UV 조명의 세기 역시 PCB에 따라서 적응적으로 설정되어야 한다. 본 논문에서는 임의의 PCB에 대하여 비코팅 영역 및 소자 등 방해요소를 제거한 유효 영역을 추출하고 유효 영역 내에서 ‘평균 밝기’와 ‘최대 색상 위치’의 두 가지 특징을 이용하여 UV 조명 세기의 적절성을 판단하는 기법을 제안 하고 제안 기법의 타당성을 보인다.

특별논문 : 품질경영시스템과 글로벌 스탠더드 ; 항공 품질경영시스템 인증활동에 관한 연구

이승주 ( Sung Ju Lee ),변재현 ( Jai Hyun Byun ) 한국품질경영학회 2007 품질경영학회지 Vol.35 No.3

The AS9100 aerospace standard has become the aerospace quality management system standard instead of ISO9001 and MIL-Q-9858A by international aerospace manufacturing companies. The organization which adopts AS9100 standard is to be certified by an independent third party certification body as IAQG requests. The quality management system certification assessor shall utilize the AS9101 standard prepared by IAQG to assess AS9100 organization. In this paper, AS9101 quality system questionnaire is analyzed and scoring method which characterizes AS9101 is reviewed. Score attained can be utilized as an organizational quality index. Practical data gathered by certified assessors from 2002 to 2007 are analyzed and suggested to improve the organization`s system operational efficiency based on the analysis results. Suggestions can be utilized by any organization to prepare assessment or to enhance the level of quality system maturity. This study is applicable to the future as well as present aerospace manufacturing activities throughout the world.

컨테이너 터미널 장치장내 ad-hoc 네트워크 라우팅 프로토콜 제안

이승주(Lee Seung Ju),박성환(Park Sung Hwan),이봉희(Lee Bong Hee),하일호(Ha Il Ho),박두진(Park Doo Jin),최영복(Choi Young Bok) 한국통신학회 2009 한국통신학회 학술대회논문집 Vol.2009 No.6