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일방향 응고법을 이용한 Mar M-247LC 초내열합금의 액상 물성 측정
김현철,이재현,서성문,김두현,조창용,Kim, Hyeon-Cheol,Lee, Jae-Hyeon,Seo, Seong-Mun,Kim, Du-Hyeon,Jo, Chang-Yong 한국재료학회 2001 한국재료학회지 Vol.11 No.9
Directional solidification experiments have been carried out at the solidification rates from 0.5 to 50$\mu\textrm{m}$/s in Mar M-247LC superalloy in which several important liquid properties were estimated by analyzing the interface stability and temperature gradient at the solid/liquid interface. The diffusion coefficient in the liquid was estimated by employing the constitutional supercooling criterion. The temperature gradients changed with solidification rates and latent heat of solidification. The thermal conductivities of solid and liquid could be estimated by heat flux balance at the solid liquid interface.
온도별 구리금파리(Lucilia sericata)의 발육
김현철,김수정,윤지은,조태호,최병렬,박정규,Kim, Hyeon-Cheol,Kim, Soo-Jung,Yun, Ji-Eun,Jo, Tae-Ho,Choi, Byeong-Reol,Park, Chung-Gyoo 한국응용곤충학회 2007 한국응용곤충학회지 Vol.46 No.1
Maggot therapy는 1900년대 초부터 압박성 욕창, 당뇨나 괴사에 의한 궤양, 수술 후 감염된 상처, 화상 등의 상처치료에 다시 사용되기 시작하였다. 환부에 처리할 적절한 발육단계의 무균유충을 생산하고, 증식 보존용 계통을 유지하는 데 필요한 자료를 얻기 위하여 온도별(15.4, 20.6, 22.5, 26.2, 29.1, $33.0^{\circ}C$) 발육실험을 수행하였다. 간배지(liver agar medium)에서 알기간과 1령 및 2령 기간은 $33.0^{\circ}C$에서 각각 9.0시간, 14.0시간, 18.6시간으로 가장 짧았다. 3령 기간과 번데기 기간은 $29.1^{\circ}C$에서 각각 285.0시간과 171.0시간으로 가장 짧았다. 온도별 발육기간을 기초로 각 발육단계의 발육영점온도와 유효적산온도를 산출하였다. 암수 성충은 대개 1개월 이상 생존하였고, 암컷은 일평생 2.7회 산란하였으며, 총 338.5개의 알을 낳았다. Maggot therapy (MT) has been re-introduced for non-healing wounds such as pressure sore, diabetic and necrotic ulcers, as well as infected surgical wounds, burn, and trauma injuries since early 1990s. For the production of sterile maggot of proper developmental stage, Lucilia sericata were studied on developmental periods of immature stages on liver agar medium under six different temperatures such as 15.4, 20.6, 22.5, 26.2, 29.1, and $33.0^{\circ}C$, and adult longevity and egg Production under $29^{\circ}C$. The periods of eggs and larvae of the 1st and the 2nd instars were shortest at $33^{\circ}C$ by 9.0, 14.0 and 18.6 hours, respectively. The periods of the 3rd instar larvae and pupae were shortest at $29.1^{\circ}C$ by 285.0 and 171.0 hours, respectively. Developmental zero point and total effective temperature far the development of each stage were calculated based on the developmental periods. Adults of both female and male lived more than one month. Females laid an average of 338.5 eggs through 2.7 times of egg laying throughout her lifetime.
방사선 검사 관련 의료장비와 PACS 간의 연동을 위한 DICOM 및 Non-DICOM 인터페이스 방안
김현철,Kim, Hyeon-Cheol 대한디지털의료영상학회 2002 대한디지털의료영상학회논문지 Vol.5 No.1
This thesis describes the effective interfacing methods of PACS Modality based on the system installation and operating experiences. PACS(Picture Archiving and Communication Systems) is a system for medical image archiving and communication using large storage device and high-speed network. The standard communication protocol of PACS is DICOM(Digital Imaging and Communication in Medicine) based on TCP/IP and point-to-point protocol. However, there are many Non-DICOM Modalities and DICOM Modalities having problems. First, we had interfaced almost modalities, Fuji CR, GE CT, MRI, Angio, Fluoro, Phillips Angio, Shimadzu Fluoro, Ultrasound PACS, with the main PACS in the Seoul S Hospital as large scale hospital. And we manipulated the intelligent image distribution and the CT, MRI Interfaces never experienced before in the Anyang J Hospital and the Chungju C Hospital as mid or small scale hospital. Technically, we developed both the DICOM Interface and the Non-DICOM Interface. At the last, the DICOM Worklist and the DICOM Print Interface were implemented in the Seoul B Hospital, the Bucheon SJ Hospital and the Seoul K Hospital independently with PACS. The Oracle, Sybase and MS-SQL are used as database, and UNIX, Macintosh, MS Windows as operating systems. And the Visual C++ and UNIX C are the main programming tools. We have used UTP, coaxial and fiber optic Gable under 10/100 mbps LAN for networking.