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성규제 한경대학교 2008 論文集 Vol.40 No.-
This paper aims to analyze the array characteristics of mobile direction finding antennas, and the variation of antenna characteristics according to the array structures and environments. We simulate antenna patterns to design direction finding system using commercial EM simulation tools, and compare the simulated results with the measured results of fabricated direction finding antennas
성규제 한경대학교 2009 論文集 Vol.41 No.-
The characteristics of the parallel composite right- and left-handed(CRLH) transmission lines are discussed. The dispersion relationship of both balanced and unbalanced parallel CRLH lines described, together with numerical calculations that demonstrate their potential.
시멘트 및 고성능AE감수제가 고유동콘크리트의 유동특성에 미치는 효과에 관한 실험적 연구
박선규,반성수,우영제,김규용,김무한 忠南大學校 産業技術硏究所 1998 산업기술연구논문집 Vol.13 No.1
The fluidity of high flowing concrete can be affected by numerous parameters which characterize either the cement or the admixture. The reactivity of a cement as determined by its chemical compositions (especially its C₃A content), its fineness and its content in sulfates and alkalies obviously plays a key role in rheology of high flowing concrete in fresh state. Specific properties of high range water reducing AE agent used to enhance the workability of high flowing concrete also exert important influence. The purpose of this experimental study is to investigate and analyze the effect of cement and high range water reducing AE agent in fluidity, setting, compressive strength of high flowing concrete. As a result, we found that fluidity of high flowing concrete is affected greatly by kind of cement and high range water reducing AE agent, also, there is harmonic character between high belite cement and polycarbonic acid high range water reducing AE agent.
성규제 안성산업대학교 2002 論文集 Vol.33 No.-
In this thesis, a Ka-band 3dB waveguide directional coupler is designed using broad-call coupling slots. It is analyzed using the mode matching method and the generalized scattering parameter of the cascaded structure is calculated. The designed coupler of 24.5GHz center frequency with 500MHz bandwidth has a coupling coefficient of 3.1dB. The characteristics of isolation and return loss is lower than -20dB.
이제혁,황규대,전억한 慶熙大學校 1994 論文集 Vol.23 No.-
Dyes released into the environment from the textile industries are considered to be serious to cause polution problem. 12 strains of the dye-degradable fungi were isolated from the soil and strain showing high activity for biodegradation of dyes used for investigation was selected from 12 strains and coded as F-2. F-2 strain was grown in the medium containing dye as a submerged culture at pH 7∼8 and 30℃ and a dye investigated was degraded at high level(80%) within 48hrs. Comparatively mild agitation speed of impeller(150rpm) was used for the cultivation of fungi F-2.
성규제 안성산업대학교 2000 論文集 Vol.32 No.-
In this thesis, the new coupling structure without coupling window between ceramic coaxial resonators is proposed to improve a process of manufacture. An elliptic bandpass filter using ceramic coaxial resonators is made on the microstrip coupling pattern. The 6-order bandpass filter of 883㎒ center frequency with 21.3㎒ bandwidth has a good agreement with the design characteristics.
염료제거능 곰팡이균주의 동정 및 염료 제거 특성에 관한 연구
이제혁,황규대,전억한 경희대학교 환경연구소 1995 環境硏究 論文集 Vol.6 No.-
F-2 isolates cultured on the agar plate containing the dyestuff has formed the clear zone around the strain. The morphology of F-2 was observed with microscope and identified as Penicillium janthinellum(subgenes Furcatum var. Divaricatum). The effects of pH on the absorbace of dyestuff almost not shown except above pH 12 and so the decrease of dye concentration during the incubation of Penjanthinellum is caused by the ability of Penjanthinellum that can remove the dyestuff. The pH and dry cell weight in the incubation of Penjanthinellum have changed after 18 hours and the decrease of the dye concentration in the medium has occured simultaneously. The rates of dye removal were good under the conditions of almost pH ranges except above pH 10 and 0.01g/100㎖ of dye was almost removed in over 3.0g/ℓ of starch concentration. In the case of l%(v/v) inoculum of Penjanthinellum in the 100㎖medium, 0.01g/100㎖ of dyestuff was almost removed in the 20 hours.
이제혁,황규대,전억한 경희대학교 환경연구소 1994 環境硏究 論文集 Vol.5 No.-
Dyes released into the environment from textile waste water are considered to be a serious polution problem because of the wide spread into environment with a variety of colorants. 12 strains of the dye-degradable fungi were isolated from the soil. Among 12 stains, F-2 showed the highest degradability if dye, was selected for the further dye-degradation study. As a result of the submerged culture of fungi, F-2, in the media containing dye stuff, the specific peak(542㎚) of dye in media was diminishd as cultibation time goes by. The optimum pH and temperature of F-2 were 7-8 and 30℃, respectively. More than 80% of dye in the reactor was removed within 48hts and the agatation speed in the reactor was shown to be optimal at this experoment. It is considered that after waste treatment of the textile waste water by F-2, drained water will not effect th pH of an aquatic condition.
Pen.janthinullum에 의한 염료의 흡착 제거 특성
이제혁,황규대,전억한 慶熙大學校 1996 論文集 Vol.25 No.-
Dyes released from dyestuff industry and textile industry causes various pollutional problems and poisonous to the organisms. The dye-adsorbable fungus has been isolated and identified as Pen.janthinellum. The optimal temperature and initial pH in the growth of Pen.janthinellum was 30℃ and 7, respectively. It is showed that dye (0.01g/100㎖) is removed completely in the culture broth. When starch as the carbon source is used, the removal of dye was 89% and so starch is available as carbon source for dye removal. And 3g/ℓ above of starch concentration is necessary for remonal of dye(0.01g/100㎖). Apollo Nylon Fast Red S2B., Nylon Fast Red M-E7B., Apollocion Red H-E7B., Apollocion Red H-E3B. was removed about 90.2, 89.3, 87.6, 85.6%, respectively. In the case of detergent addition, the impovement of adsorbability was not shown. It is identified that dead cells have the adsorbability of dye and assumed applications in the waste water treatment.