Antiplatelet and antithrombotic activities of Chungpesagan -tang

Park EK,Han YO,Han MS,Kim DH 대한약학회 2000 大韓藥學會 總會 및 學術大會 Vol.49 No.-

Effects of a Shroud Tube on Flow Field and Particle Behavior Inside a Bag-Filter Vessel

Park, Seok Joo,Choi, Ho Kyung,Park, Young Ok,Son, Jae Ek Taylor Francis 2003 AEROSOL SCIENCE AND TECHNOLOGY Vol.37 No.9

<P>A shroud tube was used to decrease the amount of particles toward the bag filters from whole particles entering a filter vessel. The effects of the shroud tube on the flow field and particle behavior inside the vessel were studied. The air mixed with dust particles enters the vessel through a tangential inlet duct. Some of the particles are deposited on the inside wall of the vessel and the surface of the shroud tube. The other ones are collected on the filter surface or passed through it. The particles deposited on the wall surfaces fall into a hopper by gravity, and those collected on filters are removed by back pulse-jet flow. Computational simulation was performed to know the prereduction rate of particles by deposition on the wall surfaces for the different shroud tubes. The experiment was accomplished with some shroud tubes suggested by the results of computational simulation, and the experimental results were compared qualitatively with the computational results. The shroud tube blocked the direct transport of particles toward the bag filters and reduced the particle loading onto the filters. The particle loading was reduced when the upper region of the vessel was not blocked by the shroud tube more than when the vessel was blocked wholly with the filters from the upper end wall. However, the re-entrainment of the particles removed from the filters by the back pulse cleaning increased when the upper region of the vessel was not blocked by the shroud tube more than when the vessel was blocked wholly with the filters from the upper end wall.</P>

EFFECT OF ENTRAINMENT ON COMBUSTION EFFICIENCY OF HIGH ASH ANTHRACITES IN FLUIDIZED BED COMBUSTORS

Park, Won Hoon,Choi, Jeong Hoo,Park, Yeong Seong,Park, Young Ok,Son, Jae Ek 한국화학공학회 1985 Korean Journal of Chemical Engineering Vol.2 No.2

미국에서의 이민자선교와 북미지역교회 “브리지 커뮤니티 교회”의 선교전략

박익휘 ( Park Ek Ikheuy ) 한국복음주의선교신학회 2022 복음과 선교 Vol.59 No.-

이 연구는 북미의 지역 교회가 어떻게 이민자에게 선교하는지에 대한 선교전략 보고서입니다. 이 선교전략 보고서를 구축하기 위해 성경신학에서 민족지학에 이르기까지 간학문적 연구방법을 선택하였습니다. 우선 이 연구는 성경이 이민자들에게 다가가기 위한 사례를 구축하는 방법을 탐구합니다. 사마리아에 대한 예수님의 타문화 전략을 다루고 룻기에 나타난 이민자 선교의 성경적 모델을 제시합니다. 또한, 지역 교회가 증가하는 지역이민자 인구를 쉽게 간과하는 이유를 이해하기 위해 이 문서는 타문화 선교의 발전에 대한 역사적 이해를 제공하고 이러한 이해가 어떻게 적용되었는지 탐구합니다. 마지막으로 이 연구는 교회가 이민자 인구를 다루는 방법을 밝히기 위해 펜실베니아주 랜스데일의 Bridge Community Church(BCC)를 대상으로 민족지학적 연구를 통한 전략을 제시합니다. The purpose of this paper is to explore how the local church reaches out to immigrants. This mission strategy paper explores how the Bible builds the case for reaching immigrants. In this first section, I will suggest Jesus’s cross-cultural strategy to the Samaritan village and provide a biblical model of immigration according to the book of Ruth. Second, to understand why many churches neglect local immigrant populations, this paper will provide a historical understanding of the development of cross-cultural missions and explore how those understandings were applied. Third, this paper will examine an ethnographic study in Lansdale, Pennsylvania, at the Bridge Community Church [BCC] to reveal how the church addresses the immigrant population. Finally, this paper will suggest three main strategies under these approaches (biblical, historical, ethnographic) that BCC may apply.

소결금속섬유필터의 기초 성능 특성

손재익,박영옥,임정환,서정민,김상도,박석주,최호경,박현설 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.4

소결금속섬유필터에 대한 압력손실, 먼지통과율, 부분집진효율 등의 기초 여과성능특성을 수행하였다. 두 종류의 필터가 적용되었고, 두 필터의 공극률 및 두께는 동일하고, 통기도와 여과정밀도는 다른 물리적 특성을 가지고 있다. 기초성능특성은 300×300 ㎜크기의 필터를 실험할 수 있는 필터성능실험장치를 가지고 조사하였다. 시험용 먼지로는 AC fine dust가 사용되었다. 압력손실은 여과속도와 먼지부하가 증가함에 따라 증가하였다. 먼지층 형성 초기 단계에는 여과포의 공극내에서 단일섬유 주위에 먼지입자가 응집되어 수지상 형태로 부착형성되었고, 먼지부하가 증가하여 가교형성에 의해 먼지층 형성이 진행된다. 균일먼지층 형성단계는 먼지부하가 계속 증가하여 먼지층 형성에 의해 여과포의 공극이 완전히 채워지고, 여과포 전체표면에 먼지층이 일정하게 포집되는 단계로 진행되었다. 먼지통과율은 먼지부하 초기단계에는 여과속도 증가에 따라 급격하게 증가하였고, 먼지부하가 증가함에 따라 급격하게 감소하였다. 압력손실 및 먼지통과율은 먼지부하 및 여과속도와 같은 운전변수로 상관관계식을 도출하였다. 상관관계식으로부터 계산된 압력손실 및 먼지통과율은 실험치와 잘 일치함을 알 수 있었다. 부분집진효율은 먼지부하에 따라 증가하였다. Basic filtration characteristics including pressure drop, penetration and fractional collection efficiency were investigated for sintered metal fiber filters. Two filters were applied. It was found that the porosity, weight and thickness were same, the air permeability and filtering accuracy were different. The performance test of fabric filter was investigated using a flat sheet filter testing unit, which can be applied to the filter of 300×300 ㎜ size. The test dust was AC Fine Dust. The pressure drop increased with filtration velocity and dust loading. The initial stage of dust cake formation was a growing process of particle dendrites on a single filament in the pore and the second stage was a bridge formation process with increasing dust loading. The final stage was a process of constant deposition of dust on a fabric surface under heavy dust loading conditions. The penetration sharply increased with filtration velocity in the intial stage of dust loading. It sharply decreased with dust loading, but the rate of decrease gradually diminished under heavy dust loading conditions. The pressure drop and penetration have been correlated in terms of operating variables such as dust loading and filtration velocity. The pressure drop and penetration calculated from the correlation equation have been compared with the experimental data and the agreement between the two data was fairly good. The fractional collection efficiency increased with dust loading.

산전초음파진단에 의한 골형성부전증 1 예

박용원(YW Park),정인배(IB Chung),김재욱(JU Kim),양영호(YH Yang),한은경(EK Han),박찬일(CI Park) 대한산부인과학회 1989 Obstetrics & Gynecology Science Vol.32 No.10

최근저자들은 제태기간 36주에 초음파진단에 의해 선천성 골형성부전증을 경험하였기에 문 헌적 고찰과 함께 보고하는 바이며, 이를 경험으로 많은 저자들이 보고한 바와 같이 임신 14주이후부터 숙련된 초음파 술자에 의한 의례적인 시행이 산전관리의 필수적 검사임을 강 조하지 않을 수 없다. osteogenesis imperfecta is a clinical , genetically biochemically radiologically heterogenous group of inherited connective tissue disorder characterized by bone fragility and other evidence of connective tissue involvement. One of these , the perinatal form on OI tyep II is rare disorder characterized by poorly ossified calvaria, beaded rib and short, bowed limbs. we recentrly exeprinced a case of OI type II diagnosed in utero by ultrasonography and confirmed by postnatal radiograph and autopsy. We present the case with the review of the literatures

Association of Novel Domain in Active Site of Archaic Hyperthermophilic Maltogenic Amylase from<i>Staphylothermus marinus</i>

Jung, Tae-Yang,Li, Dan,Park, Jong-Tae,Yoon, Se-Mi,Tran, Phuong Lan,Oh, Byung-Ha,Janeč,ek, Š,tefan,Park, Sung Goo,Woo, Eui-Jeon,Park, Kwan-Hwa American Society for Biochemistry and Molecular Bi 2012 The Journal of biological chemistry Vol.287 No.11

High-resolution three-photon biomedical imaging using doped ZnS nanocrystals

Yu, Jung Ho,Kwon, Seung-Hae,Petrá,š,ek, Zdeně,k,Park, Ok Kyu,Jun, Samuel Woojoo,Shin, Kwangsoo,Choi, Moonkee,Park, Yong Il,Park, Kyeongsoon,Na, Hyon Bin,Lee, Nohyun,Lee, Dong Won,Kim, Nature Publishing Group 2013 NATURE MATERIALS Vol.12 No.4

Three-photon excitation is a process that occurs when three photons are simultaneously absorbed within a luminophore for photo-excitation through virtual states. Although the imaging application of this process was proposed decades ago, three-photon biomedical imaging has not been realized yet owing to its intrinsic low quantum efficiency. We herein report on high-resolution in vitro and in vivo imaging by combining three-photon excitation of ZnS nanocrystals and visible emission from Mn<SUP>2+</SUP> dopants. The large three-photon cross-section of the nanocrystals enabled targeted cellular imaging under high spatial resolution, approaching the theoretical limit of three-photon excitation. Owing to the enhanced Stokes shift achieved through nanocrystal doping, the three-photon process was successfully applied to high-resolution in vivo tumour-targeted imaging. Furthermore, the biocompatibility of ZnS nanocrystals offers great potential for clinical applications of three-photon imaging.

凡用 마이크로 컴퓨터 開發을 爲한 順序的 接近方法 : CP/M Machine을 中心으로

朴香在,孫有翼 啓明大學校 産業技術硏究所 1986 産業技術硏究所 論文報告集 Vol.8 No.-

The methodology and development procedure of a 16-bit microcomputer running under CP/M operating system family are described in this paper. It emphasizes system design and implementation method in microcomputer system development including hardware components and operating system porting technology. Some salient features of the system are the use of 8086 microprocessor as CPU, Ieee 796 bus as hardware bus and CP/M-86 as operating system. The porting procedure of the operating system is also described.

열천칭을 이용한 국내 무연탄의 고유 연소반응에 관한 실험연구

박균영,손재익,박영철,박원훈 한국화학공학회 1987 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.25 No.4

석탄고유의 연소반응 기초자료를 얻기 위하여서는 연소반응이 율속인 영역에서 미시적 연소실험을 하여야 한다. 국내산 무연탄 중 대천탄(저질탄)과 함태탄을 대표 시료로 하여 열천칭(Thermogravimetric analyzer)으로 상압하, 온도 600-680℃에서 열분석한 결과, 대천탄은 활성화에너지 28.5㎉/g-㏖, 빈도인자 8.3×10^6㎝^(2.1)/g-㏖^(0.7)sec, 산소농도에 대한 반응차수 0.7을 가지며, 함태탄은 각각 27.0㎉/g-㏖, 3.8×10^8㎤/g-㏖.sec, 1.0으로 나타났다. 화학반응 율속조건을 만족시키기 위하여서는 시료의 크기를 탄종류에 따라 사전에 실험적으로 결정하는 것이 가장 중요하며, 석탄입자의 세공크기가 작을수록 시료의 크기도 작아야 한다. 연소반응 속도는 전환율에 따라 반응초기에는 증가하다가 최대값을 가진 후 서서히 감소하는 경향을 나타내는데, 이것은 반응유효 기공면적의 변화에 기인하는 것으로 판단된다. A microscale combustion experiment was performed under the chemical reaction control conditions in order to measure the intrinsic combustion kinetic data of coal. Daechon coal (low calorific value) and Hamtae coal (normal calorific value) are chosen as two representative Korean anthracites for themogravimetric analysis. Measured activation energy, frequency factor, and reaction order of oxygen concentration are 28.5㎉/g-㏖, 8.3×10^6㎝^(2.1)/g-㏖^(0.7)sec, 0.7 for Daechon coal; 27.0 ㎉/g-㏖, 3.8×10³㎤/g-㏖.sec, 1.0 for Hamtae coal, respectively, under atmospheric pressure, and between 600℃ and 680℃. It is found the most important to predetermine the sample mesh size of each coal, so that the chemical reaction control conditions are guranteed. The-reaction rates are observed to increase with time until they reach a maximum, then decrease slowly as reaction goes to completion. This phenomenon can be explained to be caused by the change of reaction surface area, i.e., by the change of pore structure as the reaction progresses.