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Development of a new forage winter oat cultivar for the mid-southern region of Korea
Ouk-Kyu Han,Tae-Il Park,Hyong-Ho Park,Tae-Hwa Song,Kee-Jong Kim,Jong-Jin Hwang,Seong-Bum Baek,Dea-Wook Kim,Jung-Il Ju,Young-Jik Jang,Nam-Geon Park,Young-Up Kwon 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
’Dahan’ (Avena sativa L.), a winter oat for forage use, was developed by the breeding team at the Department of Rice and Winter Cereal Crop, National Institute of Crop Science (NICS), RDA in 2011. It was derived from an original cross between the F1 hybrid of ‘Sprinter’ and ‘73625’ and ‘Gwiri26’ (PA7507-37). Subsequent generations followed by the cross were handled in bulk and pedigree selection programs at Suwon. A line, ‘SO99027-GB-B-113-4-4-3’, was selected for cold tolerance and good agronomic characteristics and designated as a line name of ‘Gwiri75’. The line ‘Gwiri75’ was subsequently evaluated for cold tolerance, earliness, and forage yield in four different locations, Yesan, Iksan, Kimjae, and Jeju, from 2009 to 2011 and finally named as ‘Dahan’. Over 3 years, the average forage dry matter yield of ‘Dahan’ harvested at milk-ripe stage was 15.6 MT ha-1, compared with 14.1 MT ha-1 of check cultivar ‘Samhan’. Though similar in heading date to the check cultivar, ‘Dahan’ had tall plant length and lodging resistance. The feed value of ‘Dahan’ was superior to the check cultivar in percent total digestible nutrients (TDN) and TDN yield per ha. ‘Dahan’ is recommended primarily for winter planting use in the areas where daily minimum mean temperatures are averaged higher than -6 ℃ in January, and excluded in mountain area where frost damage is presumable.
On the exact sequences of tensor products
Kwon, Tae-In,Kwon, Eun-Ouk 昌原大學校 基礎科學硏究所 1996 基礎科學硏究所論文集 Vol.8 No.-
단위원을 가지는 환 R 상의 모든 자유우가군 F 와 좌 R - 가군들의 모든 완전열 ?? 에 대하여 항등자기준동형사상을 가지는 tensor 곱의 열?? 또한 완전열임을 밝히려고 한다.
여수석유화학산단 산업폐수 재이용을 위한 블로우 다운 (Blow Down)수 발생현황 조사
권태옥 ( Tae Ouk Kwon ),문일식 ( Il Shik Moon ) 한국물환경학회 2005 한국물환경학회지 Vol.21 No.3
Purpose of this research is to quantitatively and qualitatively investigate the blow down wastewater produced from Yeosu Industrial Complex. Approximately, 38,325,000 tons/year of wastewater is produced, processed and finally discharged. Six representative companies, namely, A, B, C, D, E, F were chosen for this study. Each company produce over 5,000 tons/day of wastewater. In total, 6,844 tons/day of blow down water is produced from these six companies, put together. However, companies A and C produce about 24% and 37% of blow down water, respectively. It was found that the blow down water had favorable qualities, except for its high conductivity, ranging from 230 to 1,700 μs/㎝. It was evident that, this water can be suitable for reuse, for industrial purposes, if a suitable treatment, for example, RO membrane process is adopted to remove high conductivity.
Highly entangled hollow TiO<sub>2</sub> nanoribbons templating diphenylalanine assembly
Han, Tae Hee,Oh, Jun Kyun,Park, Ji Sun,Kwon, Se-Hun,Kim, Sung-Wook,Kim, Sang Ouk Royal Society of Chemistry 2009 Journal of materials chemistry Vol.19 No.21
<P>We introduce a biotemplating approach for creating highly entangled hollow TiO<SUB>2</SUB> nanoribbons by combining peptide assembly with an atomic layer deposition process. An aromatic peptide of diphenylalanine was readily assembled into a hierarchical organogel consisting of highly entangled nanoribbons. Unlike ordinary biomaterials, the peptide nanoribbon framework exhibited a high level of thermal stability, such that it may undergo the further functionalization process of vacuum deposition without significant damage to its nanoscale structure. A nanoscale layer of anatase TiO<SUB>2</SUB> was deposited on the nanoribbon framework by means of atomic layer deposition. After pyrolysis, a highly entangled nanotubular TiO<SUB>2</SUB> framework was created successfully. The highly entangled TiO<SUB>2</SUB> architecture exhibited UV-switchable wetting properties.</P> <P>Graphic Abstract</P><P>Owing to high thermal stability of diphenylalanine assembly, a nanoscale layer of TiO<SUB>2</SUB> could be deposited on the surface of the xerogel framework assembled from diphenylalanine <I>via</I> an atomic layer deposition process. After the calcination of the peptide framework, highly entangled hollow TiO<SUB>2</SUB> nanoribbons were successfully created. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b819254e'> </P>
Thiruvenkatachari, Ramesh,Ouk Kwon, Tae,Shik Moon, Il Taylor Francis 2005 Separation science and technology Vol.40 No.14
<P>A pilot scale, slurry type photocatalytic reactor, followed by submerged hollow fiber microfiltration (MF) membrane hybrid system was evaluated for simultaneous and complete destruction of toxic organic chemical bisphenol A (BPA) and separation of photocatalyst TiO 2 ; in order to obtain a reusable quality water. With simple modification to the treatment operation, the effect of photocatalytic reaction at modest variations in temperature was examined. Adsorption pretreatment was carried out prior to photocatalysis (UV/TiO 2 ). BPA adsorption ability on TiO 2 was very less (about 15%) at 25°C. However, adsorption pretreatment followed by photocatalytic oxidation (UV/TiO 2 ) at an elevated nearly constant temperature (about 70°C) helped in increasing the BPA degradation efficiency. The effect of ozone introduction into the treatment stream was also analyzed. Applying ozone along with UV/TiO 2 , brought about a synergistic effect on BPA degradation. Within 3 h, entire 10 ppm of BPA and the by‐product organic compounds were completely removed. TiO 2 particle separation performance using hollow fiber membrane was enhanced by adopting a two‐stage coagulation/sedimentation pretreatment. With initial turbidity of 4000 NTU, the turbidity of the final permeate water was well below 0.1 NTU. Almost complete removal of particles was achieved. Some of the main advantages of this hybrid treatment system include, large‐scale treatment, complete and efficient BPA and its organic intermediates degradation, TiO 2 easily separated after treatment and capable for reuse as it is free from chemical coagulant contaminants, reusable quality water is obtained, and the system has the potential for continuous operation with simple process modifications.</P>