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미세조류 옥외배양 시스템을 이용한 돈분 액체 비료의 영양염류 제거 및 바이오디젤 생산
최종은 ( Jong Eun Choi ),김병혁 ( Byung Hyuk Kim ),강시온 ( Zion Kang ),오희목 ( Hee Mock Oh ),김희식 ( Hee Sik Kim ) 한국환경생물학회 2014 환경생물 : 환경생물학회지 Vol.32 No.1
에너지 소비의 증가와 화석 연료의 감소로 인해 바이오디젤과 같은 재생 가능한 대체 에너지 자원이 관심을 받고 있다. 미세조류를 이용한 바이오디젤은 기존의 농작물과 경쟁하지 않는 것과 더불어 많은 장점을 갖고 있다. 본 연구에서는 미세조류 배양의 생산 비용 절감과 축산 폐수 처리라는 두 가지 목표를 충족시키지 위해 돈분 액체 비료를 사용하였다. 옥외 배양 시스템(Small Scale Raceway Pond; SSRP)과 희석된 돈분 액체 비료를 이용하여 단일 미세조류 Chlorella sp. JK2, Scenedesmus sp .JK10 과 혼합 토착 미세조류 CSS를 20일 동안 각각 배양하였다. 미세조류 혼합균주인 CSS의 바이오매스 생산과 지질 생산성은 각각 1.19±0.09 g L-1, 12.44±0.38mg L-1 day-1로 단일 종에 비해 2배 이상 높았다. 돈분 액체 비료의 TN, TP의 제거율 역시 혼합 토착 미세조류 CSS에서 93.6%, 98.5%로 단일 종의 이용에 비해 30%이상 높은 제거 효율을 보여주었다. 이를 통해 돈분 액체 비료는 미세조류 배양에 필요한 N과 P를 제공하며, 미세조류를 이용한 SSRP를 통하여 영양염류를 제거할 수 있는 가능성을 확인하였다. 또한 미세조류 배양을 위한 생산 비용의 감소로 경제성 있는 바이오디젤의 생산 가능성을 확인하였다. Due to the rapid energy consumption and fossil fuel abundance reduction, the world is progressively in need of alternative and renewable energy sources such as biodiesel. Biodiesel from microalgae offers high hopes to the scientific world for its potential as well as its non-competition with arable lands. Taking consideration to reduce the cost of production as well as to attain twin environmental goals of treatment and use of animal waste material the microalgal cultivation using piggery manure has been tested in this study. Unialgal strains such as Chlorella sp. JK2, Scenedesmus sp. JK10, and an indigenous mixed microalgal culture CSS were cultured for 20 days in diluted piggery manure using Small Scale Raceway Pond (SSRP). Biomass production and lipid productivity of CSS were 1.19±0.09 g L--1, 12.44±0.38 mg L--1 day--1, respectively and almost twice that of unialgal strains. Also, total nitrogen and total phosphorus removal efficiencies of CSS was 93.6% and 98.5% respectively and 30% higher removal efficiency compared to the use of unialgal strains. These results indicate that the piggery manure can provide microalgae necessary nitrogen and phosphorus for growth thereby effectively treating the manure. In addition, overall cost of microalgal cultivation and subsequently biodiesel production would be significantly reduced.
구강안면의 감각자극과 구강운동이 병행된 중재가 신생아중환자실의 미숙아에 구강수유 및 발달에 미치는 효과
최종배 ( Jong-bae Choi ),양종은 ( Jong-eun Yang ) 대한신경치료학회 2019 신경치료 Vol.23 No.2
Purpose The purpose of this study was to investigate the effects of sensory stimulation and oral motor exercise program on oral feeding and development in premature infants. Methods Eight of the experimental group had sensory stimulation and oral motor exercise and 7 control subjects who performed oral motor exercise alone. There are 15 people in total. They were randomly assigned to two groups according to the order in which they visited, through a random number table using a computer program. The mediation period was 5 days for 4 weeks, 20 minutes for the experimental group and 15 minutes for the control group. Results In the comparison of pre - and post - intervention effects between the two groups, amount of oral feeding, Weight, Neonatal Oral Motor Assessment Scale (NOMAS) jaw, and tongue grade showed significant changes in both groups. Comparisons of pre - and post - intervention changes between the two groups showed significant changes in the amount of oral feeding in the experimental group. Conclusion Both the experimental group with sensory stimulation and oral motor exercise and the control group with oral motor exercise program showed positive effects on oral feeding and development. The effects of oral motor exercise program and sensory stimulation intervention were more effective in increasing oral feeding than oral motor exercise alone.
수수 × 수수 교잡종의 수확시기가 원형 곤포사일리지의 품질에 미치는 영향
최기춘(Ki Choon Choi),정민웅(Min-Woong Jung),김원호(Won Ho Kim),김천만(Cheon Man Kim),윤세형(Sei Hyung Yoon),최은민(Eun Min Choi),김종근(Jong Geun Kim),이상문(Sang Moon Lee),최종만(Jong Man Choi),김혁기(Hyuck Gi Kim),임영철(Young Chu 한국초지조사료학회 2011 한국초지조사료학회지 Vol.31 No.2
본 연구는 수확시기가 수수×수수 교잡종 원형 곤포사일리지의 품질에 미치는 영향을 구명하기 위하여 천안에 위치한 국립축산과학원 자원개발부에서 수행되었다. 수수 × 수수 교잡종 SS405를 이용하여 숙기별 2회 (출수기 및 완숙기)에 걸쳐 수확을 하여 사일리지로 조제하였다. 숙기가 진행됨에 따라 수수 × 수수 교잡종원형 곤포사일리지의 조단백질은 증가하는 경향을 보였으나 NDF 및 ADF 함량 그리고 TDN 함량은 비슷한 수준을 유지하였다. 그리고 숙기별 in vitro 건물소화율도 비슷하였다. 숙기별 사일리지의 pH는 3.8~4.4을 유지하였으며, 출수기의 pH는 완숙기의 보다 높았다. 수수 × 수수 교잡종 원형 곤포사일리지의 수확시기가 늦어짐에 따라 젖산 함량은 증가하였으나 초산 함량은 감소하였다 (P<0.05). 그리고 출수기의 원형 곤포사일리지의 초산 함량은 트랜치 사일리지보다 증가되었다 (P<0.05). 완숙기에서는 제조방법에 따라 젖산과 초산 함량은 큰 차이를 보이지 않았다. 이상의 결과를 종합하여 볼 때 양질의 수수 × 수수 교잡종 원형곤포 사일리지 조제를 위해서는 출수기와 완숙기 사이에 수확하여 사일리지를 만드는 것이 사일리지 발효를 향상시킬 수 있다. This study was performed to investigate the effects of harvest stage of sorghum × sorghum hybrid (SSH) on nutritive values and quality of round baled SSH silage manufactured with SSH grown in paddy land of Department of Animal Resources Development, National Institute of Animal Science, RDA. SSH “SS405” was harvested at two different growth stages (heading and ripen stage) and ensiled at each harvest stages. Crude protein content of round baled SSH silage increased with delayed harvest maturity, but contents of ADF (acid detergent fiber), NDF (neutral detergent fiber), TDN (total digestible nutrient) and in vitro dry matter digestibility (IVDMD) was not changed. The pH in round baled SSH silage ranged from 3.8 to 4.4 at two different harvest stages, and pH in heading stage was higher than that of ripen stage. The content of lactic acid of round baled SSH silage increased with delayed harvest maturity (P<0.05), but the content of acetic acid decreased (P<0.05). The contents of lactic acid and acetic acid in ripen stage were not influenced by manufacture method of silage. The content of acetic acid in round baled SSH silage of heading stage increased as compared to that of trench SSH silage (P<0.05). Therefore, this study suggest that round baled SSH silage manufactured in both heading and ripen stage can improve the silage fermentation.
최종관(Jong Kwon Choi ),강신은(Shin Eun Kang) 중앙법학회 2015 中央法學 Vol.17 No.3
「Act on acquisition of and compensation for land, etc. 「 for public works projects」(AACL) provides that project operator acquire and compensate for land etc. for public works projects. AACL, provides things in takings jurisprudence, is different from Civil act. Because the concept of things is messily provided, things is understood and provided in classified as things of in a narrow sense, obstacle, things of in a broad sense There is the opposition between relocation principle and acquisition principle for compensation of obstacle. AACL adopted the relocation principle. In view of the compensation practice and realistic changes for obstacle, however, relocation principle must be changed to acquisition principle. In case obstacle was determined a price compensation and given a relocation decision, the Supreme Court judged that project operator can’t acquire ownership. But project operator can remove obstacle at his ownexpense and owner must endure removal. Therefore, in case he did not acquire ownership and has lost obstacle, he did nor burden liability for damages. Even if the Supreme Court reached a right conclusion denying liability for damages of project operator, the process was not squarely logic leading to the conclusion. It was originated from illogical and unsystematic AACL. So the provisions of the takings and compensation for obstacle will be logically and systematically improved.