http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박주용,양세일,최도영,장성철,이창하,최대기,Park, Ju-Yong,Yang, Se-Il,Choi, Do-Young,Jang, Seong-Cheol,Lee, Chang-Ha,Choi, Dae-Ki 한국화학공학회 2008 Korean Chemical Engineering Research(HWAHAK KONGHA Vol. No.
The dynamic characteristics of adsorption using an adsorption bed packed with Li-X zeolite (UOP) were studied through the breakthrough experiments of $H_2/CH_4$ (90:10 vol%), $H_2/CO$ (90:10 vol%) and $H_2/CO_2$ (80:20 vol%) mixtures. Effects of feed flow rate (6.24~10.24 LPM) and adsorption pressure (6.1 bar~10.1 bar) in the Li-X zeolite bed with 2.7 cm of inside diameter and 80 cm of bed length were observed. The smaller feed rate or the higher operating pressure, resulted in the longer of the breakthrough time and the breakthrough curve have tailing due to temperature variance in the bed. The adsorption dynamics of the Li-X zeolite bed were predicted by using LDF model with feed flow and pressure dependent diffusivity. The prediction and experimental data were analyzed with a nonisothermal, nonadiabatic model, dual-site langmuir (DSL) isotherm Li-X 제올라이트 흡착탑에서의 $H_2/CO_2$(80:20 vol%), $H_2/CO$(90:10 vol%), $H_2/CH_4$(90:10 vol%)의 이성분계 기체의 흡착 동특성을 연구하였다. 각 계에서 공급유속(6.24~10.24 LPM), 흡착압력(6.1~10.1 bar)에 대한 영향을 살펴보았다. 동특성 실험 결과 파과시간은 공급유속이 적을수록, 흡착압력이 높을수록 증가하였으며 탑 내부 온도의 영향으로 tailing 현상이 발생하였다. Li-X 제올라이트 흡착탑에서 공급 유량과 압력의 확산계수에 의한 LDF식을 사용하여 예측하였다. 본 연구에서는 비등온과 비단열상태, Dual-site langmuir 등온식과 고려하여 해석하였으며 실험 데이터와 비교하였다.
모바일 기반 스마트 조선소 품질관리 시스템에 관한 연구
박주용,문세영,류철호,황인혁,Park, Ju-Yong,Moon, Se-Young,Ryu, Cheol-Ho,Hwang, In-Hyuck 대한용접접합학회 2013 대한용접·접합학회지 Vol.31 No.4
In the smart life era where the majority of economically active population uses mobile devices, smart devices have formed a new service market. In this study, we developed a shipyard quality management application using mobile devices such as smart phones and tablet PCs. For this purpose, the problems were derived through the analysis of the quality management work on shipyard and the considerations were extracted to build a smart work environment by analyzing the case studies of smart work in other industrial fields. Among the shipyard quality management work, functions thought to be highly utilized when converted to a mobile system has been developed as a mobile application. The application was developed by applying an object-oriented component-based development (ooCBD) methodology, and is expected to improve the user experience and the efficiency of quality management operations in shipyard.
박주용,조효제,이지훈,임영진,Park, Ju-Yong,Jo, Hyo-Jae,Lee, Jee-Hoon,Lim, Young-Jin 한국시뮬레이션학회 2011 한국시뮬레이션학회 논문지 Vol.20 No.2
The purpose of this study is 3 dimensional modeling of lower part of drilling system in offshore rig and simulation of drilling process. Recently, shipbuilding companies have been focusing on offshore rigs due to their high added-value and the reduced demand of new shipbuilding. In most cases, however, the basic design, installation and management of offshore rig are carried out by foreign companies. Therefore, it is difficult to obtain the knowledge and information of drilling system. In this study drilling devices, BOP(Blowout Preventor) and cementing job and mud circulation related components are included as the main components of offshore rig. The structure and function of them were analyzed from a viewpoint of object-oriented technique. On the basis of this analysis they were modeled in the 3 dimensional structure with 3D software tool such as CATIA and 3DVIA Composer. The drilling process was simulated according to the scenario of drilling operation. This simulation system can be effectively used for an educational tool for students and engineers in ocean plant industries. 본 논문은 해양구조물 rig의 굴착시스템의 하부 부분의 3차원 모델링과 굴착과정의 시뮬레이션에 있다. 최근 조선사들은 높은 부가가치성과 신조의 감소로 인해 해양구조물 rig에 관심이 집중되고 있다. 그러나 대부분의 경우 해양구조물 rig의 기본 설계, 설치 및 운영은 외국회사들이 수행하고 있다. 따라서 굴착에 대한 지식과 정보를 얻기가 쉽지 않다. 본 논문에서는 해양구조물 rig의 핵심장비로 굴착장비, 폭발방지장치인 BOP, 시멘트 작업 및 머드 순환 장치 관련 장비들을 포함하였다. 이들의 구조와 기능은 객체지향기술 관점에서 분석하였다. 이 분석에 기초하여 3차원 소프트웨어 도구인 CATIA와 3DVIA Composer 를 이용하여 이 장비들을 모델링하였다. 굴착과정은 굴착작업의 시나리오에 따라 시뮬레이션되었다. 이 시뮬레이션 시스템은 해양플랜트 산업분야의 엔지니어와 학생들에게 교육도구로 유용하게 활용될 수 있다.
온도측정을 통한 정사각 채널내 단일봉과 평행한 유동의 부수로간 열혼합에 관한 실험적 연구
박주용(Ju Yong Park),신창환(Chang Hwan Shin),이치영(Chi Young Lee),인왕기(Wang Kee In) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
Dual-cooled annular fuel is being developed in KAERI. Dual-cooled annular fuel has small gaps between fuel rods compared to circular fuel rod. Because of this, a pulsation occurred between subchannels. In this paper, thermal mixing by pulsation occurred at the between subchannels in parallel flow to single rod in square channel has been performed through temperature measurement. With decreased of the distance between rod and wall, the thermal mixing effect was increased. In addition, the thermal mixing effect at subchannel was increased by mixing vane
박주용(Ju-yong Park),조효제,임영진,오형석(Hyoung-seok Oh),문세영(Se-young Moon) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5
The purpose of this study is implementation of the simulation for subsea production system. Subsea production system is installed under the environment of high pressure and low temperature. Most of processes of production are proceeded in the subsea equipments. Therefore, the understanding and study of subsea production system is very difficult because people cannot observe the process directly. The simulation system can be a solution for this difficulty, hi this research the information models and 3-D graphic model for the subsea equipments were built using the object-oriented technology and 3-D CAD. The entire system was implemented with help of simulation software, 3-DVIA Virtools. The simulation system of subsea production system was tested with several scenarios of production process. The test results showed that the simulation system is very useful for the understanding of subsea production system and can be a good education tool.
박주용(Ju-yong Park),조효제,임영진,오형석(Hyoung-seok Oh),문세영(Se-young Moon) 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5
The purpose of this study is implementation of the simulation for subsea production system. Subsea production system is installed under the environment of high pressure and low temperature. Most of processes of production are proceeded in the subsea equipments. Therefore, the understanding and study of subsea production system is very difficult because people cannot observe the process directly. The simulation system can be a solution for this difficulty. In this research the information models and 3-D graphic model for the subsea equipments were built using the object-oriented technology and 3-D CAD. The entire system was implemented with help of simulation software, 3-DVIA Virtools. The simulation system of subsea production system was tested with several scenarios of production process. The test results showed that the simulation system is very useful for the understanding of subsea production system and can be a good education tool.
퇴행성 요추 질환에 시행한 8도 케이지와 후방 요추체 간 유합술 후 요추 전만각 회복
김영태(Young-Tae Kim),조규정(Kyu-Jung Cho),박주용(Ju-Yong Park),양종혁(Jong-Hyuk Yang) 대한정형외과학회 2014 대한정형외과학회지 Vol.49 No.3
목적: 케이지를 이용한 후방 요추체 간 유합술을 시행한 퇴행성 요추 질환 환자에서 요추 전만각 회복과 골유합률에 대해 알아보았다. 대상 및 방법: 전만각 8° 케이지를 이용한 후방 추체 유합술과 척추경 나사못 고정술을 시행받은 61명을 대상으로 요추 전만각, 케이지가 삽입된 요추 분절각, 추간판 높이, 골유합률을 분석하였다. 결과: 케이지가 삽입된 분절은 3-4 요추 17예, 4-5 요추 54예, 5 요추-1 천추 20예였다. 유합한 분절 수는 1분절 32명, 2분절 27명, 3분절 2명이었다. 요추 전만각은 수술 전 33.6°, 수술 후 37.6°, 최종 추시 시 37.0o로 측정되어 수술 전에 비해 유의하게 증가하였다. 케이지가 삽입된 요추 분절각은 수술 전, 수술 후, 최종 추시 시 각각 3-4 요추가 7.0°-7.5°-6.8°, 4-5 요추가 6.5°-9.6°-8.2°, 5 요추-1 천추가 7.6°-8.3°-7.7o로 수술 직후에 비해 교정 소실은 보였으나 회복되는 양상을 보였다. 추간판의 높이는 수술 전에 비해 최종 추시 시 회복되었다. 골유합률은 95%의 환자에서 만족한 결과를 얻었다. 결론: 전만각 8° 케이지를 이용한 후방 추체 간 유합술 결과 요추 전만각 및 분절각이 수술 직후에 비해 일부의 교정 소실은 있었으나 수술 전에 비해서 회복되었다. Purpose: The purpose of this study is to determine how much lumbar lordosis is restored with an eight degree cage in posterior lumbar interbody fusion (PLIF) for degenerative lumbar spinal disease. Materials and Methods: A total of 61 patients who underwent PLIF using a metal cage with an eight degree lordotic angle were evaluated. Cases with complications such as subsidence of the cage or instrument failure were excluded from this study. Lumbar lordosis, segmental lordosis, disc height, and bony union were analyzed on the patients’ radiographs. Results: Cages were inserted at L3-4 in 17 patients, L4-5 in 54 patients, and L5-S1 in 20 patients. The number of fused level was 1 segment in 32 patients, 2 segments in 27 patients, and 3 segments in 2 patients. The lumbar lordosis was 33.6° before surgery, improved to 37.6° after surgery, and then was changed to 37.0° at the final follow-up. Segmental lordosis at which the cage was inserted was restored after surgery at L4-5 and L5-S1. Disc height was improved with surgery as well. Satisfactory bony fusion was achieved in 95% of the patients. Conclusion: PLIF using an eight degree lordotic cage for degenerative spinal disease resulted in restoration of lumbar lordosis and segmental lordosis, although these angles showed some loss of correction after surgery.