Effect of Presurgical Nasoalveolar Molding in Unilateral Cleft Lip and Palate Infants

김진선,김영진,남순현,김현정,Kim, Jin-Sun,Kim, Young-Jin,Nam, Soon-Hyeun,Kim, Hyun-Jung Korean Academy of Pediatric Dentistry 2013 大韓小兒齒科學會誌 Vol.40 No.3

구순구개열은 얼굴에 발생하는 다양한 종류의 기형 중 빈번히 발생하는 기형으로, 발생 빈도는 일반적으로 1000명당 0.28~3.74명으로 알려져 있으나 파열의 종류, 인종 및 성별에 따라 큰 차이를 보인다. 구순구개열의 치료는 수술영역에서 많은 발전이 있었지만 수술만으로는 문제점을 해결하기는 어렵다. 파열부 간격을 줄이고 구순열 수술을 용이하게 하기 위한 술전 신생아 정형술의 개념이 1950년 McNeil에 의해 개발되었으며, 최근에는 술전 비치조 정형장치(presurgical nasoalveolar molding appliance, PNAM)를 사용하여 치조골뿐만 아니라 코의 모양을 정상화하려는 시도가 이루어지고 있다. 세 명의 환자가 편측성 구순구개열로 진단받은 후 술전비치조정형장치 장착을 위해 의뢰되었다. 레진과 교정용와이어를 이용하여 제작한 K-NAM 장치물을 입술 성형 수술을 시행하기 전까지 장착하였다. 첫 내원시와 nasal molding을 시행하여 입술 성형 수술을 하기 직전, 입술 성형 수술 이후 콧구멍의 높이, 너비, 비주의 각도를 측정하여 비교한 결과 세 증례에서 모두 코의 대칭성이 증가하며 술 후 심미개선에 효과적임을 알 수 있었다. K-NAM 장치물은 장치의 장착, 유지, 조절이 용이하고 장착한 상태에서 수유가 가능하기 때문에 장착시간을 증가시킬 수 있다. 따라서 nasal molding이 가능한 한정된 기간 안에 최대의 효과를 기대할 수 있다. 그리고 젖병을 빠는 행위가 가능해짐으로써 동시에 구강조직의 발달에도 도움을 줄 수 있을 것이라 생각한다. Cleft lip and palate, the most common craniofacial anomalies, are severe congenital defects that have an incidence of 0.28 to 3.74 per 1000 live births. Although there has been great improvement in the field of cleft surgery, surgical approach cannot be the single solution to resolve the various problems encountered in patients with cleft lip and palate. The concept of presurgical infant orthopedics (PSIO) for gradual closure of the cleft gap and simplified surgical performance was first introduced by McNeil in 1950. Recently, there are many attempts not only to approximate the alveolar segments but also to reshape the nasal cartilage. Three infants with unilateral cleft lip and palate were referred from the department of Plastic Surgery for presurgical nasoalveolar molding (PNAM). Maxillary appliances using resin with orthodontic wire were fabricated. Then these appliance was applied until patients underwent lip surgery. In all cases, the patients could wear the appliance all day since they were able to eat even with the appliance on, This resulted in significant improvements in the nasal symmetry were found. Our appliance, namely K-NAM, extends the wearing time within the limited period and as a result it is expected to maximize the treatment effects. Used properly, this appliance would play a major role in enhancing nasal symmetry with satisfactory results.

터보펌프용 전진익형 인듀서에 대한 연구

김진선,홍순삼,김진한,최창호,Kim, Jin-Sun,Hong, Soon-Sam,Kim, Jin-Han,Choi, Chang-Ho 한국유체기계학회 2006 한국유체기계학회 논문집 Vol.9 No.2

Computational and experimental studies on the forward-sweep inducer for the rocket-engine turbopump are presented in comparison with the conventional backward-sweep inducer. Computational results show that back flows at the inlet decrease in the case of forward-sweep inducers compared to the back-ward inducer. Moreover, the low pressure region at the back flow is decreased, which is presumed to improve the suction performance of the inducers. Experimental results show that the suction performance of the forward-sweep inducer is almost the same as that of the backward-sweep inducer although it has smaller inlet tip diameter and shorter length. The efficiency of the forward-type inducer is found better than that of the backward-sweep inducer due to the small size of back flows.

액체질소를 이용한 터보펌프 인듀서의 수력성능시험

김진선,홍순삼,김진한,Kim Jin-Sun,Hong Soon-Sam,Kim Jin-Han 한국유체기계학회 2006 한국유체기계학회 논문집 Vol.9 No.4

A cryogenic test facility has been developed to perform inducer and pump tests using liquid nitrogen. Performance tests of a turbopump in the maximum 50ton-thrust class can be performed with cryogenic fluid in the facility which operates at a temperature around -196oC with the rotational speed up to 30,000rpm To verify the reliability of the cryogenic pump test facility, hydraulic performance tests of an inducer were accomplished, and their results were compared with the result from a water test. The results confirm the reliability of the cryogenic test facility, and it is expected to contribute for on-going development of a turbopump for liquid rocket engines.

대전입자형 디스플레이 소자의 충전전압에 따른 구동특성 분석

김진선,김영조,Kim, Jin-Sun,Kim, Young-Cho 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.1

The charged particle type display device is a kind of the reflectivity type display and shows an image by absorption and reflection of external light source. The charged particle is important factor for driving of the display and quantity of charge per mass of the charged particle determines the driving voltage, contrast ratio, response time, etc. But it is easy for the charged particles to be damaged in the putting process of the display and the damages cause lumping phenomenon of the charged particles. Because the lumping phenomenon makes high driving voltage, low quality of optical properties, short life time, etc, so the charged particles must be filled by stable putting methods. In this paper, we filled the charged particles into the panels by electric fields to improve the electrical and optical characteristics of the display. Also, we analyzed the driving characteristics of the charged particles according to the applied putting voltages.

대전입자형 디스플레이 소자의 점유면적 평가방법에 의한 구동특성 및 메모리 효과 분석

김진선,김영조,Kim, Jin-Sun,Kim, Young-Cho 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.8

The charged particle type display is a kind of the reflectivity type display and shows an image by absorption and reflection of external light source, which has keep an image without additional electric power because of bistability. In this paper, we made a device whose cell gap is $56\;{\mu}m$ and also analyzed driving and memory characteristics by applied driving voltages. As a result, we found that the driving voltage and memory effect depend on q/m(charge to mass ratio) of charged particle. In this case of breakdown voltage, the devices showed degradation of reflectivity and memory effect due to irregular movement of overcharged particles. In addition, contrast ratio of the device varies with memory effect. Thus, we consider that device needs uniform q/m for improvement of electric and optical properties and memory effect.

해양환경 내 비다공성 표면에 유류된 잠재지문 현출방법에 따른 STR 분석 연구

김진선,김세인,윤현경,추민규,Kim, Jin-Sun,Kim, Sea-In,Yoon, Hyun-Kyoung,Choo, Min-kyu 한국콘텐츠학회 2022 한국콘텐츠학회논문지 Vol.22 No.10

Among the various evidence found in maritime crimes, fingerprints and DNA are very important in that they can identify a suspect. In this study, 5 types of non-porous surfaces (plastic, stainless, glass, ceramic, FRP), which are often found as evidence in the actual marine environment, were selected, and latent and blood fingerprints were passed down and immersed at the Donghae Maritime Police Station's exclusive pier for about 7 days. After that, DNA extraction, quantification, and STR profile were analyzed after fingerprint developing CA fumming method and 4 powder methods (Swedish black powder, Concentrated black powder, Supranano red powder, Dazzle orange powder). Among the fingerprint developing methods, when Supranano red powder was applied, a relatively high amount of DNA was found. As a result of STR profile analysis, an average of 16.8 to 9 loci were secured, and all 20 were confirmed in glass and ceramic materials. As a result of the study, it was possible to secure the STR profile by extracting and quantifying DNA after applying the fingerprint developing method to virtual evidence immersed for about 7 days, and further research is needed to secure the STR profile by analyzing DNA after applying various fingerprint developing methods such as VMD and SPR.

다수 비예혼합 화염의 안정화 특성

김진선,이병준,Kim, Jin-Sun,Lee, Byeong-Jun 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.10

The stability of turbulent nonpremixed interacting flames is investigated in terms of nozzle configuration shapes and kind of fuels. Four nozzle arrangements - cross 5, matrix 8, matrix 9 and circle 8 nozzles - are used in the experiment. There are many parameters affecting flame stability in multi-nozzle flames such as nozzle separation distance, fuel flowrates and nozzle configuration etc. Key factors to enhance blowout limit are the nozzle configuration and the existence of center nozzle. Even nozzle exit velocity equal 204 m/s, flame is not extinguished when there is not a center nozzle and s/d=15.3∼27.6 in matrix-8 and circular-8 configurations. At these conditions, recirculation of burnt gas is related with stability augmentation. Fuel mole fraction measurements using laser induced fluorescence reveal lifted flame base is not located at the stoichiometric contour.

터보펌프 실매질 시험설비를 위한 알코올버너 개발시험

김진선(Jin-Sun Kim),홍순삼(Soon-Sam Hong),한영민(Yeoung-Min Han),고영성(Youngsung Ko) 한국추진공학회 2012 한국추진공학회 학술대회논문집 Vol.2012 No.11

터보펌프 실매질 시험설비는 액체산소와 케로신을 토대로 터보펌프 조립체의 성능을 검증하는 시험 설비이다. 이 시험설비 중에서 가장 핵심적인 부분은 터보펌프의 구동력을 생성시키는 고온공기 생성시스템으로 고압공기와 에탄올을 사용하는 알코올버너에 의해 요구되는 유량과 온도가 생성된다. 본 연구에서는 국내기술로 제작한 알코올버너의 검증시험을 수행하였으며, 터보펌프 실매질 시험설비 구축에 앞서 버너의 제작기술과 운용경험을 확보할 수 있었다. 75톤급 터보펌프 실매질 시험에서는 이 알코올버너가 2기 동시 운용되어 터빈이 요구하는 구동력을 충족시킬 것으로 보인다. Turbopump real-propellant test facility(TPTF) is to verify the performance of a turbopump unit(TPU) based on liquid oxygen and kerosene. One of the most important sub-facilities is a hot-gas generation system which makes the driving force of TPU with an alcohol burner and the burner of the system generates the required flow rates and temperature using high pressure air and ethanol. In this study, the verification tests of the alcohol burner which was manufactured entirely with domestic technology were performed and fabrication technique and operation skill for the burner could be obtained ahead of the construction of the facility. Two burners will be operated simultaneously for the real-propellant test of 75tf class turbopump and satisfy the power requirement from the turbine of TPU.

보건진료원의 금연지도활동에 영향을 주는 요인

김진선(Jin-Sun Kim) 한국보건교육건강증진학회 2003 보건교육건강증진학회지 Vol.20 No.3

여성 팬츠 생산라인에서 공정편성 연구

김진선 ( Kim Jin-sun ),오순 ( Oh Soon ) 한국디자인트렌드학회 2014 한국디자인포럼 Vol.45 No.-

봉제 라인공정에서 생산효율을 높이기 위해서는 생산라인의 흐름을 일정하게 유지하고, 편성효율을 높이는 것이다. 이를 위하여 팬츠를 선정하고, 품목에 대한 공정 분석, 작업시간의 측정 및 산출을 통하여, 공정을 편성한 결과는 다음과 같다. 현장분석 결과, 업체의 1일 작업시간은 9시간이며, 작업자는 관리자를 포함하여 26명으로 구성되었다. 봉제작업은 스트레이트라인으로 운영되었으며, 일부 특수재봉기 공정은 외주에서 제작하고, 조립은 내부에서 실시하였다. 작업교체는 월평균 2~3회로 다음 작업의 준비나 여유가 부족하여 생산관리에 어려움이 있었다. 팬츠 1매는 83공정으로 구성되었으며, 순 작업시간은 2882.1초였다. 작업자별 평균은 준비 및 정리공정이 166.6초(BPT), 부분 및 조립 봉제공정의 작업자별 평균은 207.4초(BPT)였다. 1차 편성효율에서 기준율 85%를 충족시키지 못하여 재편성이 요구되었으며, 필요인원은 36명이었다. 2차 산출된 편성효율에서, 준비 및 정리공정의 편성효율은 97.3%(손실률 2.7%), 부분 및 조립공정의 편성효율은 87.6%(손실률 12.4%)로 산출되었다. 이상과 같이 라인작업의 공정편성은 작업자의 유휴시간을 최소화하기 위하여 공정을 배분하고, 작업자의 기능수준, 노력도 그리고 작업태도 등을 고려하여 편성함으로서 생산성을 향상시키고, 효율을 높일 수 있으리라 본다. This study aims to increase the maximum efficiency carried out process formation by operators evaluation and work improvement. To achieve this, analyzed women`s pants production line, measured working time of each processes, and estimated operator`s competency. The results of this study are as follows. 1. The field analysis of an object manufacturer`s, one day working hours of company is 9 hours, workers consisted of 26 persons included product manager. Sewing run the straight-line, special sewing machine processes made out of the company and assembly works were progressed with inside. The average work shifts was 2 or 3 times per month, so it made a difficult of production management. because of short time to work preparation or take a break. 2. Time measurement of each process resulted that the pants of 1 piece required for 83 processes, and the net working time was 2882.1s. The real working time was 3005.8s and operator`s average working time was 166.6s(BPT) in the arrangement and also it took 207.4s(BPT) in the assembly. The rates of used machines in net working time was 27.4% in arrangement process, 14.7% in special machines process and 57.9% in assembly process. 3. Formation efficiency was 83.1% in the arrangement process and 76.3% in the assembly process. So process reformation is required because all of both dissatisfied the basic rate 85%. Also, needed operators calculated to 36 persons. Observation centering around the first yielded efficiency and required workers, and in order to balanced formation of line, a processes shift and divisions carried out. As a result, the efficiency of preparation and arrangement process was 97.3%(loss rate : 2.7%) and the efficiency of piece and assembly process was 87.6%(loss rate :12.4%)