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        검색결과 4,608

        4501.
        1998.06 KCI 등재 서비스 종료(열람 제한)
        This study aims at suggesting a concepturla model of personnel elitism, and at evaluating the model based on a shipping company case. Specifically, it asks whether the company has met the conditions nessary for the attainment of personnel litism prescribed by the conceptural model. In order to evalutate the model, questionnaire and interview methods were adopted. The area of survey includes the quality of personnel , the efficiency level of work processes. and the level of work load. This study concludes that the rationalization of work processes and training and development of personnel are necessary for a company to realize personnel elitism.
        4504.
        1998.04 KCI 등재 서비스 종료(열람 제한)
        Organics matters including algae are the major contaminants of Nak-dong river and it`s concentration is more increasing now. The use of coagulants has been incresed for the effective treatment of drinking water, and aluminum coagulants have been the most widely used in raw water treatment. However, when inorganic metal coagulant is excessively used for long period, it would result in secondary problems, such as increasing sludge production, enhancing the cost of water treatment process, and increasing concentration of residual metal, especially aluminum. Therefore, recently, in order to reduce the use of metal coagulant and enhance the coagulation effectiveness, several alternative coagulants, such as polymeric inorganic coagulants and organic polymers, have been used in water treatment plants. The objectives of this research were (1) to determine optimum dosage concentration and compare the coagulation efficiency at various pH ranges with alum alone, alum+cationic polymer, and alum+anionic polymer, (2) to evaluate the amount of alum reduced by using organic polymer, (3) to maximize removal efficiency of organic matter and minimize the concentration of residual aluminum.
        4505.
        1998.03 KCI 등재 서비스 종료(열람 제한)
        It is one of the most important factors Seafarers Ducation Quality Assurance and Management in Higher Maritime Educational Institution. The educational process and result of Higher Maritime Educational Institution should be evaluated according to the 1995 Amendments to the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers(STCW), 1978. Actually above-mentioned evaluation is deemed to make foundation in order to enhance the efficiency of shipboard education by surveying the satisfaction of shipboard training for nautical part cadets by the group. In this paper, we carried out the questionnaire survey to study satisfactory value and the reason of dissatisfaction of 113 cadets being trained on board the Training Ship in Maritime College of Korea Maritime University(K. M. U.). The results were calculated by frequency and percentage ; the significance of difference among Department groups like Maritime Transportation Science, Maritime Police and Ship Operating Systems Engineering was analysed by 2 inspection. The major results of above analysis were as follows : First training chance for dadets was very little for being overflowed on board the training ship of the K. M. U. Second, special type of Training Ship HANBADA and HANNARA made the adaptability to merchant vessel's handling restricted. Third, cadets could not manage ratings directly, therefore the education in regard to seafaring management was limited to the theoretical instruction which leads to the low level of satisfaction. And lastly, low value of satisfaction for Drydocking Education in Shipyard was caused by cadet's leaving the Training Ship on account of the safety problems including ship and cadets.
        4506.
        1998.02 KCI 등재 서비스 종료(열람 제한)
        The effects of organophosphorus and carbamate pesticides were examined inhibition of the acetylcholinesterase activity in the chicken brain with enzyme - inhibition methods. The acetylcholinesterase activity in chicken brain determined by the Ellman method was 167 μmol/min/g protein. The optimum pH of acetycholinesterase was 8.2. pI_50 of acetycholinesterase by some organophosphorus were 3.80M of phosphorodithioate, 4.04M of phosphorothioate, 6.33M of phosphate, and 6.60M of phosphrothiolate. pI_50 of acetycholinesterase by some carbamates were 5.10M of XMC, 5. 90M of carbofuran, 6.16M of isoprocarb, 6.30M of carbaryl, 6.47M of BPMC, and 6.77M of propoxur. pI_50 of carbamates selected was similar to that of phosphorothioate and phosphate organophosphates
        4507.
        1998.02 KCI 등재 서비스 종료(열람 제한)
        This study was conducted to establish mass propagation system from the axillary bud culture of chrysanthemum zawadskii H. which was used as material of medicinal plants. Shoot egeneration was better on MS medium with NAA and BA. The optimum concentraions of growth regulator for shoot regeneration differed depending on accessionsof C. Zawadskii. Shoot regeneration in Keungucheolcho was better on MS Medium with NAA 0.01mg/1 and BA 0.1mg/1 while Hyangrobonggucheocho was better with NAA 0.1mg/1and BA 0.3mg/1. Addition of NAA into medium was effective for induction of root from shoots regenerated. Shoot multiplcation was more effective when 10mg/1 spermine was added into medium than when other polyamines were treated ino medium . Randomly and specifically amplified polymorphic DAC banding patterns based on polymerase chain reaction (PCR) analysis were used to assess the genetic variation of plants regenerated from in vitro culture.
        4509.
        1997.12 KCI 등재 서비스 종료(열람 제한)
        규산시용 유무에 따라 생산된 미질을 평가하기 위하여 평택통 미사질양토(배수가 약간 불량한 보통답) 조건인 영남농업시험장 동일비료 장기 연용 시험구(29년차)의 비료 3요소구, 3요소+규산시용구, 3요소+퇴비시용구에서 1995년도 생산된 화남벼의 미립에 대한 등숙색택, 미립의 외관 및 미질 관련 특성을 분석 한 결과를 요약하면 다음과 같다. 1. 규산시용구에서는 정조의 백도치가 높고 선황색으로 색도가 높아 등숙색택이 좋아졌으며 반점립과 그을름립비율이 낮아졌다. 2. 규산시용으로 현미 중 피해립, 청미 및 변색립율이 떨어져 완전미율이 6.1∼7.5% 증가되었고 백미 중 완전미율도 1.8∼3.5% 증가되었으며 심ㆍ복백미율도 낮았다. 3. 규산시용으로 아밀로스 함량, 단백질 함량 및 요드정색도는 낮아졌고 아밀로그램의 최고점도, Breakdown및 식미품질분석계에 의한 식미치는 높아져서 식미를 향상시키는 요인으로 작용되었다.
        4510.
        1997.12 KCI 등재 서비스 종료(열람 제한)
        파종기(播種期)와 생육초기(生育初期) 관수(灌水)가 삼도시호(三島柴胡)의 수량(收量)에 미치는 영향(影響)을 구명(究明)코자 1995년부터 1996년까지 시험(試驗)을 수행(遂行)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 봄파종 시호(柴胡)의 출현일수(出現日數)는 파종후(播種後) 10일 간격으로 20mm씩 3회 관수한 시험구에서 38일로 무관수구(無灌水區)의 54일에 비하여 16일 단축(短縮)되었다. 2. 입모율(立毛率)은 10일간격 20mm씩 3회 관수한 시험구에서 64%인데 비하여 자연강우시 46%, 무관수에서는 25%로 아주 저조하였다. 3. 파종기(播種期)에 관수(灌水)한 경우 지상부(地上部) 및 지하부(地下部)의 생육(生育)이 무관수(無灌水) 및 자연강우(自然降雨)에서 보다 양호(良好) 하였으며 10a당 수량(收量)은 10일 간격 20mm 3회 관수한 경우 58kg으로 자연강우, 무관수에 비하여 각각 20%, 94%의 증수효과(增收效果)가 있었다. 4. 생육초기(生育初期)(5~6월) 10일 간격으로 30mm씩 6회에 걸쳐 관수한 것이 가장 효과적(效果的)이었다.
        4520.
        1997.10 KCI 등재 서비스 종료(열람 제한)
        The interfacial characteristics between various heavy metals and hydrous FeS were investigated. Heavy metals which have lower sulfide solubilities than FeS undergoes the lattice exchange reaction when these metal ions contact FeS in the aqueous phase. For heavy metals which have higher sulfide solubilities than FeS, these metal ions adsorb on the surface of FeS. Such characteristic reactions were interpreted by the solid solution formation theory. The presence of ligand such as EDTA reduced largely metal removal efficiency due to formation of metal-ligand complex in the solution. In an attempt to elucidate the interfacial characteristics, zeta potential of the hydrous FeS in the absence and in the presence of various metal ions were measured and analyzed.