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강인규,강신성,임학상,Kang, Inn-Kyu,Kang, Shin-Sung,Lim, Hak-Sang 대한의용생체공학회 1992 의공학회지 Vol.13 No.2
Attachment and growth of mouse flbroblast cells on block copolypeptides were studied in the pres once or absence of serum proteins. Cells are rapidly attached to she polymer surface within 30 min regardless of substrate in the presence of serum. The number of flbroblast cells attached on the poly mer surface coated by collagen was larger than thats on the bare surface. Attachment of cells Is as a whole suppressed to a low level by the addltion of sodium azide in the absence of serum. Thls suE gests that the active attachment of cells requires the biological metabolism taking place on polymer substrates. In the presence of serum protein, flbroblast cells are more rapidly grown on the bolck co polymer consisting of poly(T-benzyl L-glutamate) (PBLG) and polyoxypropylene(POP) than on other block copolymers. These results were in agreement wish the data obatlned by an Inverted ml croscope.
환경보호를 위한 국민신탁법과 자연환경국민신탁의 특징과 문제점에 관한 소고
이근영(Lee, Keun Young),임학상(Lim, Hak Sang) 충북대학교 법학연구소 2017 法學硏究 Vol.28 No.2
National Trust Act that includes the aspects of cultural heritages was enacted and announced in March 24, 2006 in line with the needs of legislation to support a series of national trust movements that have been waged spontaneously and intensive efforts of Ministry of Environment and environmental organizations. This conveys a problem that the national trust movements in Korea have been dualized to the movement by 2 National Trust Corporations which are the special corporations in accordance with National Trust Act and the one by pure private movements. Accordingly, the opinions insisting revision have raised. This paper focuses on reviewing the character and problems of National Trust Act and National Nature Trust to protect environment and suggesting a revision as a preliminary discussion to amend the act. Especially, this paper suggested the amendment of National Trust Act, Article 2, Paragraph 2 to “National Trust is defined as a legal relation that does preserving or managing activities in private sector to improve life quality of future generation in addition to current generation by acquiring cultural heritages and national environmental heritages that are valuable to preserve from the people, company and group in a form of donation, giving and trust to preserve/manage, or buying them with donated/given/trusted/consigned property and contributions to preserve/ manage or by preserving/managing them in a form that is not acquisition. The Trust Act defines the trust as fiduciary relationship. Likewise, National Trust specifies “…… preserving and managing activities” but it will be desirable to define it as “National Trust Activity” and National Trust as “legal relation that conducts …… preserving/managing activities”. Also, it is suggested to amend “donated/given/consigned” to “donated/given/trusted/consigned property” to include trust. In light of legal nature of National Trust Corporation, there are theories like Anstaltsperson and public corporation which is the special corporation. However, given that National Nature Trust considers autonomous character as an association, it will be hard to see it as Anstaltsperson which does not hold a general assembly but does have users. National Trust Corporation is a special corporation that a special act assigns corporate entity as a public corporation, not a Anstaltsperson. In addition, with the aspects of having a strong character of autonomous association, it should be a special corporation in accordance with National Trust Act. In regards to Preservation Agreements, there is a theory that it is unofficial administrative action or public law contract but all theories are based on the fact that the legal nature of National Trust Corporation is Anstaltsperson. Preservation Agreements specifies its definition as “Contract on preservation and management signed by National Nature Trust, land owner, occupant and its agent for the natural environmental heritage that needs preservation and preservation” (Preservation Agreement Regulation, Article 2): it clarifies that Preservation Agreement is a “Contract”. And, as existing theory insists, National Trust Corporation signs this preservation agreement at an equal position with the land owner. Considering this, Preservation Agreement should be interpreted as judicial contract. Of course, there is a supporting regulation (Ref. Article 16) that could partially fund the cost directly used for preserving/managing the property of the preservation agreement within the budgetary scope of the nation and local government for the corporation and group which signed the preservation agreement with National Trust Corporation but it could not be the cause of regarding preservation agreements as unofficial administrative actions. Rather, it is just to stipulate political support by the government for pro bono activities.
저품위 석탄을 충전한 칼럼실험에서의 바이오가스 생산에 관한 연구
윤석표(Seok Pyo Yoon),임학상(Hak Sang Lim),윤여명(Yeo Myeong Yun) 유기성자원학회 2017 유기물자원화 Vol.25 No.1
저급탄을 충전한 칼럼실험에서 미생물과 영양물질을 공급한 상태에서 미생물에 의한 메탄가스 발생을 유도하기 위하여 볏짚을 추가로 공급하여 장기간 바이오 가스 발생 특성을 관찰하였다. 충전한 석탄 대비 볏짚의 무게비가 0.04 이하에서는 유의미한 가스의 발생이 없었으며, 0.08에서는 약 90일간 바이오 가스가 발생되었으나, 최적 조건에서의 vial 실험 결과와 비교하면 투입한 볏짚 무게당 바이오 가스의 발생량이 5 % 수준에 불과하였다. 따라서 원위치에서 석탄을 채굴하지 않은 상태에서 바이오 가스를 생산하기 위해서는 볏짚 : 석탄의 비율이 1:3 이상의 조건에서 분해액의 COD 농도가 2000 mg/L 이상이 되도록 운전하는 반응조를 지상 혹은 지중에 설치할 필요가 있다. 또한 석탄과 볏짚을 충전한 칼럼실험 후의 지중수는 볏짚만을 투입한 vial 내 용액과 함께 파이로시퀀싱 방법으로 미생물 군집 분석을 실시하여 두 시료 간의 우점하는 미생물 종을 비교하였다. Bacteria의 균일도와 다양성 측면에서 석탄 충전탑이 보다 다양한 종분포를 이루고 있으며, 이는 결과적으로 메탄 생성에는 불리한 미생물 분포임을 나타낸다. In a column experiment with low rank coal, rice straw was additionally supplied to induce methane gas generation by microorganisms in the state of supplying microorganisms and nutrients, and long-term biogas production characteristics were observed. When the weight ratio of the rice straw to coal was 0.04 or less, there was no significant gas generation. At 0.08, the biogas was generated for about 90 days. However, the methane gas generation was only 5% compared with the vial test result at optimum condition. Therefore, in order to produce biogas in the coal deposit in situ, a reactor that operates at COD concentration of 2000 mg/L or more at a ratio of 1:3 or more of rice straw to coal should be installed on the ground or under the ground. Liquid from the column filled with coal and rice straw and a liquid from vial containing rice straw were analyzed by microbial community analysis using pyrosequencing method, and compared the dominant microbial species among the two samples. In terms of the uniformity and diversity of the bacteria, the coal-filled column showed various species distribution, which has shown to be a disadvantageous microbial distribution to methane production.