http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박제선,심도식,이정호,정경일 江原大學校 産業技術硏究所 1997 産業技術硏究 Vol.17 No.-
The problem of deteriorated highway concrete slab is very serious all over the world. Before making any decision on repair work, reliable non-destructive evaluation is necessary. One of the dependable methods is to evaluate the in-situ stiffness of the slab by means of obtaining the natural frequency. By comparing the in-situ stiffness with the one obtained at the design stage, the degree of damage can be estimated rather accurately. In this paper, the numerical modeling of vibration analysis to three span continuous reinforced concrete bridge with elastic intermediate support is presented.
ICP(Inductively Coupled Plasma) 처리에 따른 n-type SiGe/Metal contact의 SBH(Schottky Barrier Height) 연구
김이곤,장호원,전창민,송영주,강진영,심규환,제정호,이종람 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.2
The effect of surface treatment of n-type SiGe using the inductively coupled plasma (ICP) was studied by current-voltage and x-ray photoemission spectroscopy measurements. The ICP treatment produced surface oxides and point defects at the surface of SiGe. The x-ray photoemission spectroscopy measurements showed that atomic ratio of Ge/Si was increased after the etching treatment. These results provide the evidence that Si vacancies were produced at the etched surface. Si vacancies acting as donor for electrons resulted in shift of Fermi level to near the conduction band. As a result, Fermi level could be pinned at such Si vacancies, leading to the remarkable reduction of Schottky barrier height and the reduced dependence of Schottky barrier height on metal work function. (Received September 7, 2004)
Girder의 강성을 고려한 복합 재료 교량 상판의 구조 거동
원치문,박제선,이정호,심도식 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-
Many of the bidge and building floor systems, including the girders and cross-beams, also behave a similar special orthotropic plates. Such plates are subject to the concentrate masses in the form of traffic loads, or the test equipments such as the accelerator in addition to their own masses. Analysis of such problems is usually very difficult. Most of the bridge slabs on girders have large aspect ratios. Finite difference method is used for this purpose, in this paper. The reuslt is compared with that of the beam theory.
홍창우,김태경,김경진,김성환,김남윤,심도식,이정호,윤청호,백민경,원치문,박제선,이주형,정경일 강원대학교 석재복합신소재제품연구센터 1996 석재연 논문집 Vol.1 No.-
콘크리트 구조물이 대형화됨에 따라 설계단면이 증대되어 상대적으로 많은 경제적 손실을 부담하게 된다. 따라서 단면을 감소시키면서도 소요의 하중에 안전한 구조물을 건설하기 위해서는 우선적으로 구조물 건설에 기초가 되는 고품질, 고내구성의 고강도 콘크리트 개발이 절실히 요구된다 본 연구에서는 일정 시멘트비 및 혼화재 비율하에서 소요의 워커빌리티가 확보되는 고강도 콘크리트를 시간과 온도의 변화에 따라 증기 양생하여, 압축, 인장, 휨강도 뿐만 아니라 파괴특성을 실험적으로 연구하였다. 시료 제작시 시멘트 입자 사이의 공극 및 불연속 영역을 충전하여 고밀도화하기 위한 콘크리트용 혼화재로 시멘트 비표면적이 상당히 작은 초미립 분말인 실리카흄을 이용하였다. 또한 AE감수제 및 고성능 유동화제를 사용하여 혼화재의 첨가에 의하여 발생될 수 있는 워커빌리티의 감소를 방지하였다. 실험결과에 의하면 일정 양생 지속 시간하에서 온도의 증가에 따라 콘크리트의 압축, 인장 및 휨강도가 전반적으로 증가하였다. 동일하게 일정 온도하에서 양생 지속시간이 커짐에 따라 강도들이 증가됨을 알 수 있었다. 따라서 상대적으로 높은 온도와 긴 지속 양생 조건하에서 파괴에 대한 저항력이 크게 나타났다. The compressible, tensible, and flexibleresistance of the high strength concrete is analyzed by the experimentation in the present study. For the test, we cure several samples with the silica fume as a mixture being become dense the spaces between the particle of cement under the variation of both the temperature and the curing-interval. Then, the superplasticizer and the ezcon are also used to satisfy the required workability for construction. The compressible, tensible, and flexible resistances to a stress are increased as increasing the temperature and the time interval for the curing. Therefore it is concluded that the overal fractural and mechanical properties is improved by mixing the silica fume into the cement.
Jeong Joon Ahn,Hee Jin Shim,Yeon Ho Je,Sang-Guei Lee,Kwang-Ho Kim,Byung Rae Jin,Hong-HyunPark 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05
This study was conducted to investigate the insecticidal capacity of several recombinant baculoviruses to P. xylostella and S. exigua larvae. NeuroBactrus was constructed as follows: the cry1-5 of Bacillus thuringiensis 2385-1 was inserted into Autographa californica multicapsid nucleopolyhedrovirus (AcMNPV) genome by fusion of polyhedrin-cry1-5-polyhedrin under the control of polyhedrin gene promoter, and insect-specific neurotoxin from the scorpion Androctonus australis (AaIT) under the control of early promoter from Cotesia plutellae bracovirus was introduced by fusion of orf603 partial fragment in the opposite direction of polyhedrin gene, respectively. Other recombinant baculoviruses derived from the NeuroBactrus - NBt-DelA (deleted AaIT), NBt-Del5 (deleted cry1-5), and NBt-DelA5 (deleted AaIT and cry 1-5) - were manufactured in serial passages in vitro. The data were analyzed by SPSS. The value of LC50 was lower when P. xylostella larvae fed on cabbage coated with NeuroBactrus (4068.4) than when it fed on cabbage coated with AcMNPV (4.5x106). Survival time (ST50) of P. xylostella larvae (2.54days) was shorter when it fed on cabbage coated with NeuroBactrus than when it fed on cabbage coated with other recombinant baculoviruses (7.54days, 7.68days, and 8.26days) and AcMNPV (9.67days). S. exigua larvae presented the same results.
Gas-Flow Sensor using Optical Fiber Bragg Grating(FBG)
Shim, Joon-Hwan,Cho, Seok-Je,Yu, Yung-Ho,Sohn, Kyung-Rak Korean Institute of Navigation and Port Research 2008 한국항해항만학회지 Vol.32 No.9
We have proposed and demonstrated an gas-flow sensor using optical fiber bragg grating(FEG). The flow sensor has no electronics and no mechanical parts in its sensing part and the structure is th11s simple and immune to electromagnetic interference(EMI). The FEG sensor was consisted qf the sensing element and a coil heater. The metal coil was used to supply the current to the FEG. While some currents supply to the coil, the refractive index of the FEG under the coil is changed and thus the wavelength shift of fiber optic sensor was induced In this work, the wavelength shift according to flow-rate was experimentally studied and was used to evaluate the gas flow-rate in a gas tube. As a result, it was possible to measure the flow-rate in a linear range from 5 to $20{\ell}/min$ with a resolution of approximately $1{\ell}/min$ at the applied currents of 100 mA and 120 mA. The measured sensitivities were $15.3\;pm/\ell/min$ for 100 mA and $20.2\;pm/\ell/min$ for 120 mA.
Shim, Hee-Jin,Choi, Jae-Young,Li, Ming-Shun,Wang, Yong,Roh, Jong-Yul,Woo, Soo-Dong,Jin, Byung-Rae,Je, Yeon-Ho 한국응용곤충학회 2009 Journal of Asia-Pacific Entomology Vol. No.
A novel recombinant baculovirus, designated AcB5A, was constructed to develop an improved baculovirus insecticide with additional beneficial properties. Bacillus thuringiensis crystal protein gene (cry1-5) and an insect-specific neurotoxin gene (AaIT) were introduced into the Autographa californica multicapsid nucleopolyhedrovirus (AcMNPV) genome by fusion of polyhedrin-cry1-5-polyhedrin under the control of polyhedrin gene promoter, and by insertion of AaIT under the control of early promoter of ORF3004 from Cotesia plutellae bracovirus. RT-PCR analysis with total RNA from AcB5A-infected cells indicated that cry1-5 and AaIT genes were normally transcribed. The 150 kDa of polyhedrin-Cry1-5-polyhedrin fusion protein was produced by AcB5A and occluded into polyhedra produced by the recombinant virus. This protein was activated when treated with trypsin to form a crystal protein of approximately 65 kDa. The AcB5A showed a high level of insecticidal activity against Plutella xylostella larvae and a significant reduction in the lethal time against Spodoptera exigua larvae compared to those infected with wild-type AcMNPV. The expression level of the fusion protein decreased after in vivo passage as a result of homologous recombination between the two polyhedrin genes.