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- 저자 : Jong Cheol Joo(주종철) (검색결과 3 건)
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Evaluation of Organic Sudangrass for Feed Value, Silage Quality and Palatability in Korea
김종덕,심금섭,주종철,이현진,전경협,윤영유,오응용,이효원,Kim, Jong-Duk,Shim, Keum-Seob,Joo, Jong-Cheol,Lee, Hyun-Jiun,Jeon, Gyeong-Hyeop,Youn, Young-You,Oh, Eung-Yong,Lee, Hyo-Won Korean Association of Organic Agriculture 2011 韓國有機農業學會誌 Vol.19 No.S
The main nutritional problem of sorghum${\times}$sudangrass hybrid (Sorghum bicolor${\times}$Sorghum sudanese) silage is low quality and palatability. This experiment was conducted to evaluate whether organic com grain and crushed rice addition of sorghum${\times}$sudangrass hybrid silage increases forage quality of the silage. The sorghum${\times}$sudangrass hybrid silages with added com grain and crushed rice were similar to conventional com silage in moisture content. However organic sorghum${\times}$sudangrass hybrid silage had low pH values. Silage added with gain and byproduct had higher crude ash, acid detergent fiber (ADF) and neutral detergent fiber (NDF) contents than control com silages, while its non-fiber carbohydrate (NFC) and total digestible nutrients (TDN) showed the opposite results. Lactic acid, butyric acid and lactic percentage of total organic acid (L/T) of sorghum${\times}$sudangrass hybrid silages were higher than those of com silage, but acetic acid was higher than control. In vitro dry matter digestibility (IVDMD) of com silage was higher than other sorghum silages. Feed intake of sorghum${\times}$sudangrass hybrid silage added with crushed rice was highest among silages. Therefore, these data indicate that crushed rice and com grain added sorghum${\times}$sudangrass hybrid silage could be recommended as the most effective treatment for increasing silage quality and palatability.
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효율적인 목장관리를 위한 마이크로 컴퓨터 이용에 관한 연구
이정구(Jeong Koo Lee),주종철(Jong Cheol Joo) 한국축산학회 1989 한국축산학회지 Vol.31 No.3
This study was performed to standardize various forms related dairy record keeping, to standardize the procedures computing and adjusting 305 day, 2X, ME lactation record from sample-day production, and to develope Dairy Farm Management System(DFMS) for the improvement of practical animal management by utilizing micro-computer. The DFMS system developed from this study consists of the 11 kinds of input-forms, the 6 kinds of operation-forms to put into, the 7 kinds of input-forms resulted from the above operation, the 12 kinds of output-forms summarized the results of analysis, and the 2 kinds of files related to keep the data permanently.
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동시 스퍼터링법에 이용하여 제작한 TiO<sub>2</sub>와 Ag/TiO<sub>2</sub> 광학 박막의 특성
김상철,한성홍,김의정,이충우,주종현,김구철,Kim, Sang-Cheol,Hahn, Sung-Hong,Kim, Eui-Jung,Lee, Chung-Woo,Joo, Jong-Hyun,Kim, Goo-Cheol 한국광학회 2005 한국광학회지 Vol.16 No.2
고주파 마그네트론 동시 스퍼터링법을 이용하여 $TiO_2$ 박막에 Ag를 도핑한 $Ag/TiO_2$ 박막을 제작하고, 열처리 온도에 따른 박막의 물리적, 화학적 특성을 조사하였다. XRD 측정 결과로부터 금속을 도핑한 박막이 순수 $TiO_2$ 박막보다 결정크기가 더 작은 것을 확인하였으며, SEM 측정 결과로부터 $Ag/TiO_2$ 박막은 순수 $TiO_2$ 박막보다 골자의 크기가 작고 균일하다는 것을 알 수 있었다. 제작된 박막은 가시광선 영역에서 높은 투과율을 나타내었다. $600^{\circ}C$에서 열처리한 박막은 아나타제 결정상이 나타났으며, $900^{\circ}C$에서 열처리한 박막은 아나타제와 루타일상이 혼합되어 나타났다 특히, $900^{\circ}C$에서 열처리한 경우 아나타제에서 루타일로의 상전이에 따른 밴드갭 에너지의 변화에 의해 박막의 흡수단이 장파장 영역으로 이동하였다. 또한 박막 내의 흡수와 산란효과에 의해 투과율이 감소하였다. $Ag/TiO_2$ 박막의 광활성은 순수 $TiO_2$ 박막보다 우수함을 알 수 있었다. Ag-doped $TiO_2$ thin films were prepared by RF magnetron co-sputtering method, and their physical and chemical properties were examined as a function of calcination temperature. XRD results showed that the crystallite size of Ag-doped films was smaller than that of the $TiO_2$ thin films. SEM results showed that the particle size of $Ag/TiO_2$ film was smaller and more uniform than pure $TiO_2$ film. The films had high transparency in the visible range. The films calcined at $600^{\circ}C$ were the anatase phase, and the films calcined at $900^{\circ}C$ were a mixture of anatase and rutile phases. The absorption edge of films calcined at $900^{\circ}C$ was red-shifted. This is due to the augmented absorption resulting from the phase transformation from anatase to rutile phase. And the transmittance of films decreased by the light scattering and absorption in the films. Photocatalytic activity of $Ag/TiO_2$ thin films was higher than that of the pure $TiO_2$ thin films.
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