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오늘 본 자료
Tetrachlorvinphos의 첨가 급여가 돈분 중 파리발생에 미치는 영향
전병수,곽정훈,김태일,권두중,유용희,김형호,한정대 한국축산환경학회 2000 축산시설환경학회지 Vol.6 No.1
A feeding trial with a total of 24 growing pigs of average 33.47kg body weigh was conducted to investigate effects of dietary supplementation with Tetrachlorvinphos on swine growth and fly control. The Experimental animals were divided into two groups of 12 gigs, 3 replicates of 4 animals each. Body weight gains and feed conversion rates were no differences between control and treatment. Maggot and fly populations were significantly reduced (P<0.05), respectively.
Preparation of Large Area $TiO_2$ Thin Films by Low Pressure Chemical Vapor Deposition
전병수,이중기,박달근,신세희,Jeon, Byeong-Su,Lee, Jung-Gi,Park, Dal-Geun,Sin, Se-Hui 한국재료학회 1994 한국재료학회지 Vol.4 No.8
Chemical vapor deposition using titanium tetra isopropoxide(TTIP) was employed to investigate effects of process parameters on the uniformity of $TiO_{2}$this films deposited on Indium Tin Oxide (ITO)coated glass. Deposition experiments were carried out at temperatures ranging from $300^{\circ}C$ to $400^{\circ}C$ under the pressure of 0.5~2 torrin a cold wall reactor which can handle 200mm substrate. It was found that the growth rate of $TiO_{2}$was closely related to the reaction temperature and the ractant gas compositions. Apparent activation energy for the deposition rate was 62.7lkJ/mol in the absence of $O_{2}$ and 100.4kj/mol in the presence of $O_{2}$, respectively. Homogeneous reactions in the gas phase were promoted when the total pressure of the reactor was increased. Variance in the film thickness was less than a few percent, but at high deposition rates film thickness was less uniform. Effects of reaction temperature on $TiO_{2}$ thin film characteristic was investigated with SEM, XRD and AES.
전병수,곽정훈,김태일,유용희,양창범,김형호,한정대 한국축산시설환경학회 1999 축산시설환경학회지 Vol.5 No.3
This study was carried out to improve septic tank for piggery wastewater treatment of small pig farm. Septic tank were consisted of screen tank, aeration tank with two steps, settling tank, and filtering tank. Aeration tanks were filled with ALC of ø4~5cm. All operation steps were performed by timer from influent to effluent. Septic tank decreased BOD by 94.7% from 4,298.3mg/$\ell$ to 226.3mg/$\ell$ and also decreased SS by 92.4%, from 2,231.3mg/$\ell$ to 161.0mg/$\ell$, respectively.