• 제목/요약/키워드: Pennsylvania State

검색결과 314건 처리시간 0.022초

Recent Development in Ultrasonic Guided Waves for Aircraft and Composite Materials

  • Rose, Joseph L.
    • 비파괴검사학회지
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    • 제29권6호
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    • pp.525-533
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    • 2009
  • Emphasis in the paper is placed on describing guided wave successes and challenges for applications in aircraft and composite materials inspection. Guided wave imaging methods discussed includes line of sight, tomography, guided wave C-scan, phased array, and ultrasonic vibration methods. Applications outlined encircles lap splice, bonded repair patch, fuselage corrosion, water loaded structures, delamination, and ice detection and de-icing of various structures.

램제트 엔진의 점화 천이에 관한 연구 (Ignition Transient Mechanism in an Entire Integrated Rocket Ramjet Engine)

  • 성홍계
    • 한국추진공학회지
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    • 제4권2호
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    • pp.12-20
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    • 2000
  • The numerical analysis, including chemical reaction of an entire ramjet engine is studied to understand the ignition transient mechanism and the dynamic characteristics of the Integrated Rocket Ramjet System comprehensively. Details of how a subsonic combustion environment is established from the supersonic ram air after removal of the inlet port cover, are examined during the ignition transient. Various physical processes are investigated systemically, including ignition, flame propagation, flame dynamics, and vorticity evolution.

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The Dual-Channel, Pulse-Counting Pierce-Blitzstein Photometer-The PBPHOT: Our Last Paper with Bob Koch, and Additional Technical History

  • Ambruster, Carol;Hull, Tony;Koch, Robert H.;Mitchell, Rich;Wolf, George;Smith, Bob
    • Journal of Astronomy and Space Sciences
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    • 제29권2호
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    • pp.195-198
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    • 2012
  • The dual channel Pierce-Blitzstein photometer (PBPHOT) was productively used at the Flower and Cook Observatory to provide 60 years of study of binary systems and other cosmic objects. We review the history of this instrument, discuss its calibration, and recall some personal and professional interactions with Professor Robert H. Koch.

중앙대학교 부설 한국인적자원개발전략연구소 국제학술세미나-글로벌시대의 전략적 인적자원개발

  • 한국대학교육협의회
    • 대학교육
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    • 통권147호
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    • pp.114-116
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    • 2007
  • 중앙대학교(총장 박범훈)는 글로벌인적자원개발대학원(원장 이희수)의 주관으로 2007년 5월 3일 아트센터 9층 멀티미디어세미나실에서 교육인적자원부 수도권대학 특성화 지원사업의 일환으로'글로벌시대의 전략적 인적자원개발'이라는 주제의 국제학술세미나를 개최하였다. 이날 세미나에는 미국 교육학회장을 역임한 세계적 석학인 The Pennsylvania State University의 Kyle Peck 교수 등을 비롯하여 교육인적자원부, 한국직업능력개발원, 중앙대학교, PSI 컨설팅 등 관.산.학.연의 핵심 인사가 참여하였다. 다음은 기조연설 및 주제발표의 내용을 정리한 것이다.

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Advances In Air-Cooled Heat Exchanger Technology for Residential Air-Conditioning

  • Webb Ralph L.;Kim Nae-Hyun
    • International Journal of Air-Conditioning and Refrigeration
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    • 제13권4호
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    • pp.184-195
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    • 2005
  • This paper describes the recent work on advanced technology concepts applied to air cooled heat exchangers for residential air-conditioning. The concepts include vortex generators for the air-side, micro-fin or flat tubes for the refrigerant-side. Advances in understanding of heat transfer mechanisms, predictive models are discussed.

SWAT를 이용한 델라웨어강 유역의 수질모델링 (Water Quality Modeling in the Delaware River Basin by SWAT(Soil and Water Assessment Tools))

  • 조성민;이명우
    • 환경영향평가
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    • 제4권2호
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    • pp.39-57
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    • 1995
  • 이 논문은 미국 Pennsylvania의 델라웨어강 유역에서의 토지이용으로 인한 영향을 평가하기 위하여 수질모형 SWAT (Soil and Water Assessment Tool)를 GIS등과 결합하여 (Arc/info 와 GRASS)사용하였다. 이 논문에서는 GIS를 수치수질모형과 결합하여 사용하였으며 그 대상지역은 $250km^2$의 Brodhead Creek 유역이다. 수질모형에 사용된 자료는 1:250,000의 DEM (Digital Elevation Model)에서 추출된 자료와 토양자료 및 관측된 유량 및 질산염 농도와 관련된 자료이다. 그리고 DEM자료, Curve Number 및 기타 입력변수의 민감도를 분석하였다.

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Polymeric nanoparticles as dual-imaging probes for cancer management

  • Menon, Jyothi U.;Jadeja, Parth;Tambe, Pranjali;Thakore, Dheeraj;Zhang, Shanrong;Takahashi, Masaya;Xie, Zhiwei;Yang, Jian;Nguyen, Kytai T.
    • Biomaterials and Biomechanics in Bioengineering
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    • 제3권3호
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    • pp.129-140
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    • 2016
  • This article reports the development of biodegradable photoluminescent polymer (BPLP)-based nanoparticles (NPs) incorporating either magnetic nanoparticles (BPLP-MNPs) or gadopentate dimeglumine (BPLP-Gd NPs), for cancer diagnosis and treatment. The aim of the study is to compare these nanoparticles in terms of their surface properties, fluorescence intensities, MR imaging capabilities, and in vitro characteristics to choose the most promising dual-imaging nanoprobe. Results indicate that BPLP-MNPs and BPLP-Gd NPs had a size of $195{\pm}43nm$ and $161{\pm}55nm$, respectively and showed good stability in DI water and 10% serum for 5 days. BPLP-Gd NPs showed similar fluorescence as the original BPLP materials under UV light, whereas BPLP-MNPs showed comparatively less fluorescence. VSM and MRI confirmed that the NPs retained their magnetic properties following encapsulation within BPLP. Further, in vitro studies using HPV-7 immortalized prostate epithelial cells and human dermal fibroblasts (HDFs) showed > 70% cell viability up to $100{\mu}g/ml$ NP concentration. Dose-dependent uptake of both types of NPs by PC3 and LNCaP prostate cancer cells was also observed. Thus, our results indicate that BPLP-Gd NPs would be more appropriate for use as a dual-imaging probe as the contrast agent does not mask the fluorescence of the polymer. Future studies would involve in vivo imaging following administration of BPLP-Gd NPs for biomedical applications including cancer detection.