• Title/Summary/Keyword: 송영봉

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A Study on Noise and Vibration Characteristics of Pipe Structures (파이프 구조물의 소음 및 진동특성 연구)

  • 류봉조;임경빈;이규섭;송영봉;공용식;오부진
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.05a
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    • pp.334-337
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    • 2002
  • The paper presents noise and vibration characteristics of three kinds of pipe materials (PVC pipe, cast-iron pipe and newly developed pp pipe). In order to measure structure bone noise, impact force using small balls was applied to earth pipe. It was confirmed that structure bone noise can be reduced by more large damping materials. Also, transmission loss of pipes depending on the frequency ranges was investigated by using sound source through speakers.

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Docetaxel and Cisplatin as Induction Chemotherapy in Locally Advanced Head and Neck Cancer (국소 진행성 두경부암 환자에서의 Docetaxel과 Cisplatin 유도화학요법)

  • Cho Eun-Hee;Cho Keun-Hyok;Song Young-Bong;Choi Ik-Sung;Choi Jae-Won;Nam Seung-Hyun;Kim Bong-Seog
    • Korean Journal of Head & Neck Oncology
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    • v.21 no.2
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    • pp.126-131
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    • 2005
  • Objectives: To evaluate the efficacy and safety of induction chemotherapy with docetaxel and cisplatin in locally advanced head and neck cancer. Materials and Methods: Between June 1998 and December 2004, 30 patients were enrolled and among them, 20 patients were evaluable. Patients were treated with docetaxel $75mg/m^2$ and cisplatin $60mg/m^2$ on day 1 every 21 days. Results: The median age was 71(range 54-80) years old. All 20 patients were male. Nineteen patients had pathologically squamous cell carcinoma and 1 had undifferentiated carcinoma. Fourteen of 20 patients(70%) demonstrated an objective response with two(10%) achieving a complete clinical response and eleven(60%) a partial response. The median response duration was 5.3(1.6-32.1) months and the median time to progression was 5.6(1.4-33.8) months. The median overall survival of all patients was 14(range 2.2-34) months. The median overall survival of responders was 17.5(range 5-34) months and that of non-responders was 3.2(range 2.2-23) months, but it was not statistically significant(p=0.106). During a total of 92 cycles, granulocytopenia worse than CTC(Common toxicity criteria) grade 2 occurred in 6%, thrombocytopenia in 2%, and anemia in 3%, respectively. Non-hematologic toxicities were minor and easily controlled. Conclusion: The induction chemotherapy of docetaxel and cisplatin has moderate efficacy with acceptable toxicities in patients with locally advanced head and neck cancer.

Study on Application of Wave Travelling Effect and Local Site Effect to Design Standard for Analysing Seismic Behavior of Long-Span Cable-Stayed Bridge (장대사장교의 지진거동 분석시 지반특성 및 파동전달효과를 고려한 설계기준 적용에 대한 고찰)

  • Park, Youn-Soo;Song, Young-Bong;Hyun, Ki-Hwyun;Lee, Soon Nam;Yang, Won Yeol
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.12 no.1
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    • pp.167-174
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    • 2008
  • Number of long-span bridge construction has been increased recently so that seismic consideration of design has become significant. To adapt such significance to design, seismic design in the newly revised 'Cable Steel Bridge Design Handbook' specifies some of wave travelling effect and local site effect. In this study, a cable-stayed bridge with main span of 500m is analysed having variables of uniform excitation, wave travelling effect, and wave travelling effect plus local site effect. Result shows that wave travelling effect in cable-stayed bridge affects considerably to its seismic response under weak soil condition even though the span length is relatively short. What's more, regardless of soil type, the seismic response has become higher for analysis with wave travelling effect and local site effect than with wave travelling effect only. Consequently, in seismic response analysis of long-span bridge, consideration should be given to application of wave travelling effect and local site effect.