생물반응기 배양산삼근의 생육 및 Ginsenoside 변이

이재근 강원대학교 2006 국내석사

This study was carried out to investigate the suitable media, kinds and concentration of growth regulators for establishing bioreactor culture system using in vitro cultured Mountain grown ginseng The root growth was obtained from root cultures on liquid SH medium containing different concentrations of cytokinin and auxin. The effect of cytokinin and auxin in root growth differed depending on each culture or acession. The better growth regulators were low level of cytokinin and high level of auxin for root growth in Mountain grown ginseng. Investigations for a finding the optimal culture medium showed that SH application was better than more factorial composition between MS and WPM. For the induction of Mountain grown ginseng root, SH medium supplemented with 4 mg IBA/L was selected for best suspension cultures. Inoculum size of root 10 g was superior to 520 g for biomass and ginsenoside production. Specifictly, ginsenoside contents on Mountain grown ginseng were higher than those on cultivated ginseng. The growth of Mountain grown ginseng roots under 1700 lux condition was decreased until 10% compared to the 3400 lux condition. In conclusion, I suggested that growth and development of ginseng adventitious roots were most important of culture conditions and operating bioreactor skills.

산불피해 복구를 위한 정부지원액이 지역경제에 미치는 파급효과 분석 : 산업연관분석을 중심으로

李在根 강원대학교 2008 국내석사

본 연구는 2000년 4월 대형 산불이 발생한 동해안지역 중 피해규모가 큰 상위 3개 지역인 삼척시, 고성군, 동해시를 선정하여 정부지원액이 지역경제에 미치는 파급효과를 분석하였다. 분석방법은 산업 간의 연관관계를 정량적으로 분석할 수 있는 산업연관분석을 이용하였다. 지역별 파급효과는 생산유발효과, 고용유발효과, 소득유발효과를 이용하여 분석하였다. 파급효과를 분석한 결과를 다음과 같이 요약하였다. 1. 삼척시의 총 생산유발액은 1,119.5억원으로 그 중 직접유발액은 696.3억원으로 나타났다. 농수산업의 총 생산유발효과는 61.3억원, 임업의 총 생산유발효과는 947.5억원, 건설업은 96.9억원, 공공행정 및 국방은 13.7억원으로 나탄ㅆ다. 고성군의 총 생산유발액은 163.4억원으로 나타났다. 농수산업의 총 생산유발효과는 9.7억원, 임업은 100.8억원, 건설업은 36.9억원, 공공행정 및 국방은 15.9억원으로 나타났다. 동해시의 총 생산유발액은 181.2억원으로 나타났다. 농수산업은 15.8억원, 임업은 130.7억원, 건설업은 29.7억원, 공공행정 및 국방은 5억원으로 나타났다. 2. 삼척시의 정부 지원으로 인한 고용유발효과는 총 999명으로 직접적 효과는 297명으로 나타났다. 임업은 총 고용유발효과가 815명으로 직접 고용유발효과는 252명, 간접 고용유발효과는 563명이었다. 농수산업, 임업, 건설업, 공공행정 및 국방은 모두 간접 고용유발효과가 직접 고용유발효과보다 큰 것으로 나타났다. 고성군의 고용유발효과는 총 125명으로 나타났고 간접 고용유발효과가 112명으로 대부분을 차지하였다. 임업에서는 총 67명의 고용유발효과가 나타났으며, 그 중에서 간접 고용유발효과가 60명으로 나타났다. 동해시의 고용유발효과는 총 95명으로 고성군과 마찬가지로 간접 고용유발효과가 대부분을 차지하였다. 그 중에서도 임업의 간접 고용유발효과 비중이 가장 높게 나타났다. 3. 삼척시의 총 소득유발효과는 165.9억원으로 직접 소득유발효과가 60.4%인 100.2억원, 간접 소득유발효과가 39.6%인 65.7억원으로 나타났다. 직접 소득유발효과의 비중이 가장 높은 산업은 임업으로 나타났다. 고성군의 총 소득유발효과는 32.4억원으로 나타났다. 임업은 총 소득유발효과가 14.6억원으로 그 중 직접 소득유발효과가 9.9억원(68.2%)으로 나타났다. 동해시는 총 소득유발효과가 35.5억원이었고, 간접 소득유발효과는 16.6억원(52.1%)으로 나타났다. 임업은 직접 소득유발효과가 13.1억원(60.0%)으로 간접 소득유발효과보다 컸다. 4. 동해시는 공공행정 및 국방을 제외한 다른 산업에서 생산유발효과의 효율성이 높게 나타났다. 소득유발효과의 효율성 역시 동해시에서 가장 높게 나타났다. 생산유발효과는 소득유발효과에 비해 지역별로 적게는 2배에서 많게는 8배까지 높게 나타났다. 농수산업과 임업 부문의 고용유발효과의 효율성은 삼척에서 높았고 건설업과 공공행정 및 국방의 고용유발효과의 효율성은 고성에서 높게 나타났다. This study selected three areas of Samcheok City, Goseong-gun and Donghae City that had the largest damages caused by large-scale forest fires occurred in April, 2000, among east coast ares and analyzed the ripple effects of the amount of government funds on regional economy. For the analysis method, an input-output analysis that could analyze the correlation between industries quantitatively was used. The regional effects were analyzed in terms of production inducement effect, employment inducement effect and income inducing effect. The results of the effects could be summarized as below. 1. A total amunt of production inducement effect in Samcheok City was 111.95 billion won, out of which the amount of its direct inducement was 69.63 billion won(62%). A total amount of production inducement effect in agriculture and fishery industry was 6.13 billion won, the one in forestry was 94,75 billion won, the one in construction industry was 9.69 billion won and the one in public administration and national defense services was 1.37 billion won. A total amount of production inducement effect in Goseong-gun was 16,34 billion won. It was found that it was 0.97 billion won in agriculture and fishery industry, 10.08 billion won in forestry, 3.69 billion won in construction industry, 1.59 billion won in public administration and national defense services. A total amount of production inducement effect in Donghae City was 17.62 billion won. It was noted that its agriculture and fishery industry created 1.58 billion won, its forestry 13.07 billion won, its construction industry 2.97 billion won and its public administration and national defense services 0.5 billion won. 2. It was estimated that the employment inducement effect in Samcheok City thanks to governmental support was 999 persons and its direct effect included 297 persons. In forestry, a total amount of employment inducement effect was 815 persons and its direct effect created 252 persons and its indirect effect created 563 persons. It has been shown that the indirect employment inducement effect in agriculture and fishery, forestry, construction industries and public administration and national defense services was larger than their direct effect. The employment inducement effect in Goseong-gun turned out to be a total of 125 persons, out of which its indirect effect included 112 persons. In forestry, a total of 67 persons were employed, among which 60 persons were employed by its indirect effect. The employment inducement effect in Donghae City amounted to 95 persons and most of employment was done by its indirect effect in the similar way as Goseong-gun. Among the said fields, the indirect employment inducement effect in forestry was the highest. 3. A total amount of income inducing effect in Samcheok City amounted to 16.59 billion won and its direct effect was 60.4% which amounted to 10.02 billion won, while its indirect effect was 39.6% which amounted to 6.57 billion won. The highest direct income inducing effect turned out to be in forestry. A total of income inducing effect in Goseong-gun amounted to 3.24 billion won. A total of income inducing effect amounted to 1.46 billion won in forestry, among which its direct effect was 0.99 billion won(68.2%). A total of income inducing effect in Donghae City reached 3.55 billion won, among which its indirect income inducing effect amounted to 1.66 billion won(52.1%). The direct income inducing effect in forestry reached 1.31 billion won(60.0%)., which was larger than its indirect effect. 4. It has been found that the efficiency of production inducement effect in the industries other than public administration and national defense was high in Donghae City. The efficiency of income inducing effect was highest in Donghae City. It turned out that the production inducement effect was two to eight times higher in some regions than in others compared to income inducement effect. While the efficiency of employment inducement effect in the fields of agriculture and fishery industry and forestry was high in Samcheok City, that of employment inducement effect in the fields of construction industry and public administration and national defense services was high in Goseong-gun.

한국주택은행의 개인주택자금 대출금리와 시장실세금리의 장기적 관계에 관한 검정

이재근 서강대학교 경제대학원 1996 국내석사

취득세 신고납부제도의 조세회피에 관한 연구

이재근 서울大學校 行政大學院 1998 국내석사

알루미늄 합금 (Al.1100-O) 鎔接材에서의 疲勞龜裂 成長擧動에 관한 硏究

이재근 朝鮮大學校 産業大學院 1994 국내석사

The objective of this thesis is to investigate the influence of welding residual stresses on the fatigue growth behavior of cracks located transverse to the weld bead. For this purpose, G.T.A. (Gas Tungsten Arc) welding was performed on the Al. Alloy 1100-0 plate and the same initial crack is made on HAZ(Heat Affected Zone), weld metal and base metal respectively. C.T.(Compact Tension) specimens were used as experimental material. Initial welding residual stresses were measured by using strain gage sectioning method. All specimens were tested under constant amplitude load with stress ratio R=0.1. The results obtained from the experimental studies are as follows: 1. The number of repeat cycles required to the final fracture is the largest in the case of base metal specimen located to the edge of welding bead followed by parent metal specimen and then HA2 and weld metal specimens (HA2 and weld metal are almost same). 2. The distribution of initial welding residual stresses differs with the location of welding bead. HA2 and weld metal specimens are affected by tensile stresses while the base metal specimen is strongly influenced by compression residual stresses. 3. The fatigue life of PWHT(Post Weld Heat Treatment) specimens is close to that of parent metal and also the crack growth rate of PWHT is the same as the parent metal specimen's due to relaxation of residual stresses. 4. Paris' law, da/dN=C(Δk)^(m), is satisfied in region I1 (i.e. a region of stable growth state of the fatigue crack) moreover, the welding residual stresses do not affect the value of m. 5. It is possible to predict fatigue crack growth behaviors and the fatigue life, using numerical analysis together with distribution of initial residual stresses and the values of C and m obtained from fatigue testing.

Growth of Carbon Nanotube Forests for Fiber Application

이재근 포항공과대학교 일반대학원 2015 국내박사

Carbon nanotube (CNT) fiber has gained attention as a new material to replace commercial carbon fibers. However, the research level is primitive, so a thorough basic studies are necessary to surpass the properties of carbon fibers. As a model system for such academic studies, CNT forest is appropriate. In this study, CNT forests were synthesized necessary for CNT fiber applications. In the first part, we studied the growth of spinnable CNT forests. For the production a strong CNT yarn from a CNT forest, it is desirable to spin the CNT yarn from a tall CNT forest. Unfortunately, the waviness in the lower region of CNT forests that appears after prolonged growth times was revealed to decrease the spinnability. Raman analysis indicated that the wavy morphology is an intrinsic characteristic of individual CNTs. Thus, to grow taller spinnable CNT forests, optimum growth conditions should be maintained for as long as possible, to avoid producing wavy region. Another important aspect in growing spinnable CNT forests is the growth termination process. If the termination process is slow, a wavy region is produced at the bottom of the CNT forest, which dramatically decreases its spinnability. It is therefore desirable to blow off the residual C2H2 gas with an excessive Ar flow, to prevent the production of a wavy bottom region. In the second part, we studied the growth kinetics of tall CNT forests. The growth of CNT forests has been limited to the centimeter scale due to insufficient understanding of their growth kinetics. To investigate the growth kinetics of CNT forests, we characterized the mass transport phenomena arising during CNT forest. We formulated the hypothesis that such growth is mass transport limited and proposed a model describing this mass transport. According to our model, the effects of diffusion boundary layers on the growth rate are significant. The initial growth rate is expected to increase with the velocity of the bulk gas flow as the boundary layer thickness decreases. To test this prediction, CNT forests were grown at various total gas flow rates in the range 170 sccm to 1700 sccm, which correspond to flow velocities in the range 0.79 cm/s to 7.9 cm/s. The initial growth rate was found to increase from 1.4 mm/h to 3.5 mm/h as the total flow rate increases from 170 sccm to 1700 sccm. Thus there is a clear inverse proportionality between the initial growth rate and the thickness of the diffusion boundary layer, which confirms that the growth of CNT forests is mass transport limited. These results provide new insight into the growth kinetics of CNT forests. The precise control over the growth of CNT forest was required as the CNT forest becomes important as a model system for CNT fiber studies. The study provides a better understanding on the growth of CNT forests. Spinnable CNT forest and tall CNT forest as tall as 1.8 cm were successfully grown. The research is expected to contribute to the research for the improvement of mechanical properties of CNT fibers.

고경도재료의 조형방전에 의한 가공 특성

이재근 경남대학교 산업대학원 2001 국내석사

沿岸에서 複合生活團地計劃에 관한 硏究

이재근 한국해양대학교 대학원 2003 국내석사

In coastal areas of our nation, environmental pollution and the destruction of ecosystem have been deepening due to the concentration of manufacturing facilities and the development of big cities. Also, the utilization efficiency of coastal areas have been lowered and the potential of the areas was not fully displayed because the harbor, industrial and tourism spaces were located individually without a comprehensive blueprint on the areas. The problem is that the demand for the water friendly coastal area and comfortable oceanic living space is expected to be increased remarkably. And the need for oceanic environment preservation will be increased due to the continuous growth of coastal cities and the increase in population in the future, too. Accordingly, it is required to plan ocean living complexes to accomodate comfortable and pleasant environment, paving the way to meet the demand for the ocean based living space, and the requirements for ocean production activities, culture and leisure at this knowledge information industry era. The purpose of this study is to plan the oceanic living complexes. We have recognized the necessity of the ocean living complexes through the prospect of social change and then selected some example areas in the southern coast to prepare the program. As a result, we have selected Woongcheon district (suburban type) in Jinhae City, Kyungnam Province, Wolpo district (island type) in Namhae-gun, Kyungnam Province and Gawoodo district (fishing village type) in Kangjin-gun, Chonnam Province, etc., leading to prepare ocean living complex plans appropriate to the situation of each district. The following is the conclusion of this study; 1.We have suggested the ocean living complex as a new concept of oceanic dwelling place to utilize our coastal space and its natural resources environment friendly, as well as satisfying the requirement for comprehensive living space in the forthcoming future through the complex. 2.We have defined the living complex model as the suburban type, the fishing village type and the island type. 3.We have selected example areas of the living complex primarily in southern coast, such as the foregoing Woongcheon district, Gawoodo district and Wolpo district, etc. 4.We considered each area's geographical, social and economical situation in preparing the appropriate oceanic living complex. For example, Woongcheon district is a suburban type model, Gawoodo district is a fishing village type model and Wolpo district is a island type model. 5.It is our understanding that the above three areas should be designated as the semi-city districts by changing the homeland use planning law to implement our living complex plan. 6.When it comes to the regulation regarding the implementation of the ocean living complexes in the three areas, we can go ahead by adding the ocean living complex district to the Coastal Area Management Law or the Basic Law of Maritime & Fishery because the laws cover both sea and land. In the long run, however, it is desirable to have a separate legislation on the oceanic living complex.

혈청 LDL 콜레스테롤이 낮은 환자의 임상적 특징과 뇌출혈 발생 위험도 : The Characteristics of the Subjects with Very Low Serum Low Density Lipoprotein Cholesterol and the Risk of Intracerebral Hemorrhage in Those Subjects

이재근 제주대학교 대학원 2012 국내석사

Aims : Further studies about hypocholesterolemia are warranted. Some studies revealed an association between hypocholesterolemia and intracerebral hemorrhage (ICH). In the present study, we aimed to evaluate the clinical characteristics of the subjects with very low serum low density lipoprotein cholesterol (LDL-C) and compare the risk of ICH by statin use or statin non-use group in the subjects. Methods : From our hospital records, we evaluated the clinical characteristics of subjects with LDL-C ?T 40 mg/dL. The exclusion criteria were systemic infectious or inflammatory diseases, trauma, brain tumor, type 1 diabetes, acute systemic illness, pregnancy, thrombolytic therapy in the hospital when the lipid profiles were measured. Results : Among a total of 34415 subjects who were presented to the laboratory to measure serum LDL-C, 250 subjects had serum LDL-C 40 mg/dL or less that we defined as very low level. Nearly half of the subjects had very low LDL-C level without history of statin use, usually due to alcohol intake or various chronic illnesses including liver diseases, end stage renal disease (ESRD). ICH occurred in 4 subjects with very low LDL-C, all of whom had no history of statin use. Among various clinical factors, ESRD was related with ICH in subjects with very low LDL-C. Conclusions : We found about 1% of subjects whose LDL-C was measured in a hospital have LDL-C 40mg/dL or less. Among them, half of the subjects had no history of hypolipidemic therapy. ICH incidence tended to be higher in this spontaneous group than in statin users.

영어 비제한적 관계절에 대한 형태통사적 접근

이재근 忠南大學校 大學院 2018 국내박사

English relative clauses are headed by wh-elements such as which, who(m), and whose. In general, they are following main clauses and bear some relation to a particular constituent in preceding clauses. English relative clauses are divided into two usages. One is restrictive, and the other is non-restrictive. Restrictive relative clauses(RRC) directly modify a constituent, or head, in the main clause. Non-restrictive relative clauses(NRRC) add some further meanings into a constituent in the main clause. We can easily tell NRRC from RRC with comma and the existence of a pronunciation pause. This dissertation focuses on NRRC in English.. Chapter 2 deals with the previous studies related to the formation of English relative clauses. Kayne(1994) gives a detailed account of relative clauses based on his Linear Correspondence Axiom(LCA). According to him, a head noun in the main clause is positioned in the surface position after being promoted from the original position of a relative clause. So, this theory is called Promotion theory. It has elucidatory forte with respect to Idiom chunks, Pronominalization, and Reconstruction effects. But the examples which Kayne gives are not the right wh-elements in relative clauses. Furthermore his explanation impose an NP in DP position. Lastly, in his theoretical frame there is no distinction between RRC and NRRC. Other than Kayne, Chomsky(1977) proposes Wh-movement theory about relative clauses. According to the theory, wh-operator based generated in the relative clause moves into spec-C and then it is interpreted by the Predication-Agreement relation. Chapter 3 aims to examine unique features of NRRC in English. RRC can show auxiliary contraction and split of idiom chunks and be focused or negated. However, NRRC can not. Unlike RRC, NRRC has such a various kind of head as NP, DP, AP, PP, VP, or CP. Wh-elements in NRRC do not seem to have quantificational nature.(Authier & Reed, 2005). That is why what Lasnik & Stowell(1991) call Weak Crossover can not apply to NRRC. All things being considered, RRC has an X’-adjunction structure, NRRC has an XP-adjunction structure. In the latter part of this chapter, pied-piping can happen as a means to overcome some kinds of restriction, such as Island effects in RRC. But in NRRC, pied-piping assumes different aspects that include i) the pied-piping of various constituents involving VP, AP, non-finite clause with PRO, ii) massive pied-piping. Chapter 4 deals with P-marker of NRRC and the nature of wh-element in NRRC. Wh-elements in NRRC has little intrinsic meaning in itself and has the function of merely signaling the afterthought. A wh-element that appears in NRRC is a wh-expletive like it and there. Especially, NRRC is made by a syntactic operation called Sideward Movement(SM). The reason wh-element in NRRC is wh-expletive includes i) that wh-element in NRRC has only one minimal feature [±HUMAN], ii) that it is only a partial spell-out of wh-feature(Authier & Reed, 2005), iii) that in fragment sentences, it can be a kind of discourse anaphora, iv) that wh-expletive appears in clefts v) that there are so many wh-expletive elements in languages other than English. In sum, NRRC is made by the use of SM from another workstation, and wh-element in NRRC is a kind of wh-expletive.