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[논문]억지말뚝을 이용한 자립식 흙막이 공법의 해석기법 개발
권정근,임종철,김창영 釜山大學校生産技術硏究所 2008 生産技術硏究所論文集 Vol.67 No.-
억지말뚝을 이용한 자립식 흙막이 공법은 많은 실험과 현장적용을 통해 경제적이며 효율적인 공법으로 입증되었다(김,2006). 그러나 지반공학적인 이론적 확립이 되어 있지 않았다. 이에 이론적인 해석기법의 개발을 위해 실제 시공여건을 반영한 단계굴착을 통한 실내모형실험이 수행되었다. 본 연구에서는 단계굴착에 따른 흙막이 벽체 및 억지말뚝의 거동과,단계굴착에 따른 흙막이 벽체와 억지말뚝에 작용하는 토압과 응력을 분석하였다. 그 결과를 바탕으로 지반의 파괴 메카니즘을 제안하였으며 연결부,엄지말뚝,억지말뚝의 해석기법을 개발하였다.
오리엔탈나리의 球根 收穫時期와 低溫處理 期間이 生育에 미치는 影響
金熙峻,金正萬,金致善,柳汀,崔泳根,文炳永 한국화훼연구회 2001 화훼연구 Vol.9 No.1
This study was carried out to determine the effect of the duration of chilling treatment and the lifting time of bulbs on growth of Lilium Oriental hybrids for product of cut flower in the type of forcing or semiforcing culture in Korea. "Casablanca", "Acapulco" and "Le Reve" in lilium Oriental hybrids were used in these experiment and carried out from 1999 to 2000 in Iksan, Korea. The bulbs for experiment were lifted on August 27, September 27 and October 27 and the all of them were chilled at 5±1℃ for 0,8,10,12 weeks. Development of the bulbs lifted on October 27 was superior than that of lifted bulbs on August 27 in the three cultivars. The bulbs lilted lately and chilled for a long time were sprouted more earlier and grown faster. In order to increase bulb sprouting until 100%, the duration of chilling treatment of bulbs was need for 12 weeks on August 27, 10 weeks on September 27 and above 8 weeks on October 27. The flowering according to the duration of chilling treatment and the lifting time of bulbs was same above. Consequently, the bulbs should be chilled at 5±1℃ for chilled for 10 weeks at late September and 8 weeks in producted bulbs at late October in earlyㆍMidseason variety fur product of cut flower hut bulbs of late variety should be chilled for 12 weeks at late September and 10 weeks at late October.
일란성 쌍태 중 일측 태아의 인어체기형 (Sirenomelia)
정상근 ( Jeong Sang Geun ),김현철 ( Kim Hyeon Cheol ),김유신 ( Kim Yu Sin ),김윤아 ( Kim Yun A ),김조영 ( Kim Jo Yeong ),김지연 ( Kim Ji Yeon ),신승주 ( Sin Seung Ju ),김낙근 ( Kim Nag Geun ),강혜윤 ( Kang Hye Yun ),박정선 ( Park 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.4
Sirenomelia is a lethal congenital malformation characterized by single or fused lower limbs associated with other severe genitourinary and lower gastrointestinal tract anomalies. Associated anomalies include malformation of vertebrae and pelvis, oligohyd
김영근(Yeong Geun Kim),루비라하디얀(Lubi Rahadiyan),정효민(Hyo Min Jeong),정한식(Han Shik Chung),김무근(Moo Geun Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
This paper presents the development and testing of cascade refrigerator system for achieving super-low temperature condition. This experiment study shows the pressure and evaporation condition in the second stage to the temperature characteristics of the cascade refrigeration system. Compressor inlet pressure of low-pressure stage was worked in the vacuum condition and over-atmospheric pressure. Evaporation condition was tested in the vacuum condition and atmospheric pressure. Two different types of refrigerants are utilized for this system, R-22 is applied for the high stage, and R-170 for the low-pressure stage.