붕어의 폐사에 미치는 合成洗劑의 急性毒性

이정렬(Lee Jeong-Yeol),김영길(Kim Young-Gill),김종연(Kim Jong-Yeon),김을배(Kim Eul-Bae) 군산대학교 수산과학연구소 1988 水産科學硏究 Vol.- No.4

Short-term acute toxicity of synthetic detergent(harmful and non-harmful detergents) to crusian carp, Carassius auratus was examined by static bioassay. The crusian carp was exposed to 10 different concentration of synthetic detergent for 240 hours in order to determine median lethal concentration(LC50). In case of harmful detergent, the 100% mortality was showed within 72 and 24 hours for 14 and above 20 ppm, but showed below 30% for until 10 ppm. For the non-harmful detergent, 80% of mortality was appeared for 450 ppm only The 48hr, 96hr and 240hr of median lethal concentration was found 12.85ppm, 11.86ppm !ind lO.36ppm respectively. The permissible toxicant concentration of acute toxicity to crusian carp was 1.19ppm. Gill tissue of dead crusian carp showed necrosis and blood vessel also damaged Epithelium of gill lamellae showed pronounced change in even 8 ppm below. During the test period, gills of survival animals appeared also change for non-harmful detergent. So, animals showed effection of detergent even though animals exposed to non-harmful detergent for long times.

大蛤, Metetrix lusoria의 窒素 代謝

이정렬(Lee Jeong-yeol) 군산대학교 수산과학연구소 1989 水産科學硏究 Vol.- No.5

主要 養殖對象 種인 大蛤을 材料로 實驗室에서 混合餌料(Nitzchia closterium+Monochrysis lutheri)를 攝餌시키고 窒素背泄率과 排出의 量 및 含窒素量을 測定하여 大蛤의 窒素代謝能을 조사하고 窒素收支를 推定하였다. 먹이로부터 成長에 利用된 窒素의 量은 6.15~14.90%이었고 으로 2.77~9.72%, 그리고 82.33~84.13%가 窒素代謝生物로 排泄되었으며 同化效率은 크기가 작을수록 높게 나타났다. 攝餌에 쓰인 에너지는 큰 個體보다 작은 個體일수록 더 많이 消費하였다. 酸素消費의 SDA는 平素보다 2.1~2.8倍였고, 排泄窒素의 SDA는 1.3~1.5倍였다. 自然産大蛤에서 排泄의 窒素量은 1日 平均 3.69~23.77㎍N으로 이를 攝餌窒素量으로 換算하면 0.067~1.866㎎N이고 瀘水量은 0.005~30.778ℓ에 상당하는 것으로 推定되었다. The nitrogen metabolic activity and nitrogen budget for Meretrix lusoria were estimated investigating the rate of nitrogen excretion, amounts of Ceces α nd nitrogen contents of Cecal material after being fed with mixed cultures of microalgae(Nitzchia closterium and Monochrysis lutheri). The amount of nitrogen avaiJable for growth was 6.15 to 14.90% of total ingested nitrogen. Fecal nitrogen and nitrogen excreted as final product of N-metabolism were 2.77 -9.72%, 82.33-84.13% respectively of total ingested nitrogen Weight-specific assimilation rates were inversely related to body size. Energetic expenses for feeding sman size grouDs were higher than of large ones. The rate of oxygen can sumption and nitrogen excretion were 2.1 to 2.8 limes and 1.3 to 1.5 limes respectively of routine rate. The nitrogen contents of feces excreted by individuals within 1 day were 3.69 to 23.77㎍ N and after conversion into ingestion equivalents and filtration rates were estimated to be 0.061 to 1.866mg Nand 0.005 to 30.778ℓ respectively

西海 沿岸의 養殖場 環境調査 -1.庇仁灣 김 養殖場의 水質環境

이정렬(Lee Jeong-yeol),김영길(Kim Young-gill),김용호(Kim Young-ho),김종연(Kim Jong-yeon) 군산대학교 수산과학연구소 1989 水産科學硏究 Vol.- No.5

To understand the effects of oceanographic condition on the harvest of laver and establish the basic environmental data for cultivation farm of laver, a sedes of survey was carried out in Biin Bay, west coast of Korea from January to June. 1987. Flood current running northward with the velocity of O.25~0.30m/s at outer of Oryok-to and westnorthward with O.20m/s at mouth of bay. At ebb tide, the current flow southward with O.25-0.35m/s at around Oryok-to and ' outheastward with 0.25m/s at mouth of bay. Water quality was nearly normal as unpolluted sea water except the concentration in TSS which showed higher than 2nd class criterion of sea water quality. The amount of nutrients(nitrate and phosphate) were lower during the culitivation periods of laver. Total 54 species of phytoplankton and 14 species of zooplankton were identified from all sample collected. Dominant species were Eucampia zodiacus, Skeletonema costatum.Coscinodiscus sp. as phytoplankton and Noctiluca scinitillans, Acartia clausi as zooplankton. The total standing crop of phytoplankton was ranged of 3,000 to 1,375,400 cell/ℓ and that of zooplankton was 300 to 50,600 individuals/ℓ. Average content of chlorophyll a in Biin Bay was 2.82㎎/㎡. Total nitrogen content and chlorophyll a in cultured laver sampled from Biin Bay were higher in Feburary in all and C, D farm's quality index of laver were better than the other farms.

西海沿岸의 養殖場 環境調査 3. 扶安 백합 養殖場 環境

이정렬(Jeong-Yeol LEE),김영길(Young-Gill KIM) 군산대학교 수산과학연구소 1994 군산대학교 수산과학연구소 연구논문집 Vol.2 No.-

In puan area the environmental surveys were carried out at two farms of hard clam, Meretrix lusoria from April 1987 to November 1978 in order to know wheather the farm environments could be rehabilitated for the cultivation of hard clam or not. The range of temperature of surface seawater was 10.7~27.4℃. pH 7.6~8.2, salinity 22.3~30.3 ppt, COD 0.20~4.71mg/l, sulfide 0.04~0.22μg-at./ㅣ, suspended solid 34.8-199.3mg/l, chlurophyll a 3.71~49.02mg/m³, TIN 2.01~24.47μg-a5./ㅣ, phosphate 0.60~11,03 μg-at./I, and silicate 4.04~476.36μg-at./ㅣ. The range of temperature ot substratum(bottom soil) was 14.2~29.7℃, pH 8.3~9.5, water content of substratum was 0.28~0.49 mg/g dried mud, COD 2.80~50.94mg/g dried mud, total organic matter 1.05~1.97%, concentration of total Kjedhal nitrogen 31.9~194.9 μg./ㅣ dried mud, and sulfide 0.032~0.133mg/g dried mud. Fine sand was dominant ranging over 92~95% and silt and clay was 2.8~8.1% of the composition of substratum. Some residual agricultural chemicals, α, β, r-BHC. heptachlor, heptachlor-epoxide, aldrin, DDE. DDT and dieldrin were detected in hard clams collected from Puan areas. Especialy, more chemical were detected during the period of rainfalls. From above results, it is considered that the hard clam frams were not yet recovered from deteriorated conditions for aquaculture.

도재 수리시스템에 따른 도재와 복합레진의 전단결합강도

김경규,신상완,이정렬,김영수,Kim, Kyoung-Kyu,Shin, Sang-Wan,Lee, Jeong-Yeol,Kim, Young-Su 대한치과보철학회 2007 대한치과보철학회지 Vol.45 No.4

Purpose: This in vitro study evaluated shear bond strengths of surface treatment porcelains with four porcelain repair systems simulating intraoral bonding of composite resin to feldspathic porcelain or pressable porcelain. Material and methods: Eighty Porcelain disks were prepared. Group A: forty disk specimens were fabricated with Feldspathic Porcelain($Omega^{(R)}900$, Vident, Menlo Park, CA, USA). Group B: forty disk specimens were fabricated with Pressable Porcelain(IPS Empress 2 ingot, Ivoclar-Vivadent, Schaan, Liechtenstein, Germany). Each groups was divided into 4 subgroups and composite resin cylinders were bonded to specimen with one of the following four systems: Clearfil Porcelain Bond(L. Morita, Tustin, CA, USA), Ulradent Porcelain Etch. (Ultradent, Salt Lake City UT, USA), Porcelain Liner-M(Sun Medical Co., Kyoto, Japan), Cimara Kit(Voco, Germany). After surface conditioning with one of the four porcelain repair systems substrate surfaces of the specimen were examined microscopically(SEM). Shear bond strengths of specimens for each subgroup were determined with a universal testing machine (5mm/min crosshead speed) after storing them in distilled water at $37{\pm}1^{\circ}C$ for 24 hours. Stress at failure was measured in $MP_a$, and mode of failure was recorded. Differences among four repair systems were analyzed with two way ANOVA and Duncan test at the 95% significance level. Results: In the scanning electron photomicrograph of the treated porcelain surface, hydrofluoric acid etched group appeared the highest roughness. The shear bond strength of the phosphoric acid etched group was not significantly(p>0.05) different between feldspathic porcelain and pressable porcelain. But in no treatment and roughened with a bur group, the shear bond strength of the feldspathic porcelain was significantly higher than that of the pressable porcelain. In hydrofluoric acid etched group, the shear bond strength of the pressable porcelain was significantly higher(p<0.05). Conclusion: 1. Treatment groups showed significantly greater shear bond strengths than no treatment group(p<0.05). 2. Group with more roughened porcelain surface did not always show higher shear bond strengths. 3. In phosphoric acid etched group, there was no significant difference in shear bond strength between feldspathic porcelain and pressable porcelain(p>0.05). However in the other groups, there were significant differences in shear bond strengths between feldspathic porcelain and pressable porcelain(p<0.05).

언더컷이 있는 치아에서 개별 치아 트레이가 인상채득에 미치는 영향

서광원,신상완,이정렬,Seo Kowang-Won,Shin Sang-Wan,Lee Jeong-Yeol 대한치과보철학회 2004 대한치과보철학회지 Vol.42 No.1

Problem : The several studies were reported to the effects of individual tooth tray with the parallel tooth, but not reported to the effect of individual tooth tray with severe undercut in impression making. Purpose : The purpose of this study is to examine the effect of individual tooth tray; 1) the accuracy of impression in terms of distance. 2) reproducibility of pocket. Material and methods : In this study, a metal model with 3 teeth including tooth prepared 30-degree undercut and gingival crevice of the depth 5mm, width 0.4mm was cast. Impressions of the metal model were taken in 5 times used 4 kinds of impression materials with individual tooth tray and another impression taking were made with conventional method without individual tooth, used same materials, procedure. The stone models were made. Distances between abutments were measured with a Micromeasurescoup-mm. Result : The following results were obtained ; 1. In the comparisonof inter-abutment distance between parallel tooth without individual tooth tray, 4elastomeric materials have not significant difference to the metal model(p>0.05). 2. In the comparisonof inter-abutment distance with undercut tooth without individual tooth tray, 4elastomeric materials have a significant difference to the metal model(p<0.05), especially polyether's dimensional change is large. 3. If individual tooth tray was used to take impression in abutment teeth with severe undercut, more stable results was achieved easily than conventional method. (p>0.05). 4. It is not true that the pressure of impression material with individual tooth tray increased to gingival sulcus. Conclusion : By the results, I knew the fact that individual tooth tray was useful impression method on the teeth with severe undercut for the dimensional stability. Also, I could not confirm the fact that individual tooth tray would increase the penetrating pressure into cervice.

다양한 CAD/CAM 시스템으로 제작된 3 본 고정성 가공의치 지르코니아 코어의 변연 및 내면 적합도 평가

허중보,김우식,김하영,김종은,이정렬,김영수,전영찬,신상완,Huh, Jung-Bo,Kim, U-Sic,Kim, Ha-Young,Kim, Jong-Eun,Lee, Jeong-Yeol,Kim, Young-Su,Jeon, Young-Chan,Shin, Sang-Wan 대한치과보철학회 2011 대한치과보철학회지 Vol.49 No.3

연구 목적: 본 연구는 다양한 CAD/CAM 시스템에 의해 제작된 지르코니아를 이용한 3-unit 브릿지 코어의 적합도를 "Replica Technique"으로 측정하여 기존 제품들의 내면 및 변연 적합도를 평가해 각 시스템의 적합 특성을 알아보고 임상 적용에 참고 자료로 활용하고자 시행하였다. 연구 재료 및 방법: 상악 좌측 제1소구치를 결손치로 하고 상악 좌측 견치, 상악 좌측 제2소구치를 지대치로 하는 3-unit 고정성 가공의치를 구현한 티타늄 모형을 제작하고, 40개의 실험 모형을 제작하였다. 각 모형을 10개씩 분류하고 Cerasys$^{(R)}$ (C군), Dentaim$^{(R)}$ (D군), KaVo Everest$^{(R)}$ (K군), $Lava^{TM}$ (L군)시스템으로 각각 지르코니아 코어를 제작하였다. 제작된 코어는 각 지대치마다 내면에 16개의 점을 선택하고 "Replica Technique"을 이용하여 각 포인트의 간극을 측정하였고 부위별 측정치를 비교, 평가하였다. Two-way ANOVA와 Dunnett T3 analysis를 이용하여 통계 분석하였다(${\alpha}$=.05). 결과: 모든 시스템에서 변연의 외부보다 내부에서 조금 더 큰 간극을 보이는 특징을 보였다. K군의 경우 전반적인 적합도는 우수하였으나 절단부위의 간극이 아주 크게 나타나는 특징을 보였고, C군의 경우 변연부위의 간극은 K군와 비교하여 크지만(P<.05) 전반적인 내면 간극이 다른 시스템에 비해 균일한 특징을 보였다. 축벽의 간극에서는 모든 시스템, 모든 절단부위에서 $100\;{\mu}m$ 미만의 우수한 적합도를 보였다. L군와 C군의 경우 변연의 외측부와 내측부의 간극차이가 적었으나 KaVo Everest$^{(R)}$와 Dentaim$^{(R)}$의 경우 마진 내측이 외측보다 간극이 큰 특징을 보였다(P<.05). 변연과 내면적합도로 나누어 분석하였을 때 K군과 C군이 D군과 L군보다 상대적으로 더 좋은 변연 및 내면 적합도를 보였고(P<.05) 두 지대치 중 견치가 제2소구치보다 더 좋은 적합도를 보였다(P<.05). 결론: 대부분의 시스템에서 변연 부위의 적합도는 임상적으로 허용 가능한 범위에 있었다. 변연 간극과 내면 간극 모두에서 지대치 중에 견치에서보다 제2소구치에서 더 큰 간극을 나타내었다. 또한 대부분의 시스템에서 축벽보다는 교합면 쪽 간극이 상대적으로 크게 형성되었다. Purpose: This study was aimed to compare the margin and internal fitness of 3-unit zirconia bridge cores fabricated by several CAD/CAM systems using replica technique. Materials and methods: Three unit-bridge models in which upper canine and upper second premolar were used as abutments and upper first premolar was missed, were fabricated. Fourty models were classified into 4 groups (Cerasys$^{(R)}$ (Group C), Dentaim$^{(R)}$ (Group D), KaVo Everest$^{(R)}$ (Group K), $Lava^{TM}$ (Group L)), and zirconia cores were fabricated by each company. Sixteen points were measured on each abutment by replica technique. Statistical analysis was accomplished with two way ANOVA and Dunnett T3 (${\alpha}$=.05). Results: In most systems, there was a larger gap on inter margin than outer margin. In the Group K, overall fitness was excellent, but the incisal gap was very large. In the Group C, marginal gap was significantly larger than Group K, but overall internal gap was uniform (P<.05). The axial gap was under $100\;{\mu}m$ in all system. The difference between internal and external gap was small on Group L and C. However, internal gap was significantly larger than external gap in Group D (P<.05). The fitness of canine was better than second premolar among abutments (P<.05). Conclusion: The marginal and internal gap was within the clinically allowed range in all of the three systems. There was a larger gap on second premolar than canine on internal and marginal surface. In most systems, there was a larger gap on occlusal surface than axial surface.

프로펠러 날개의 동적 구조해석 시스템 개발

노인식(Nho, In Sik),이정렬(Lee, Jeong Yeol),이현엽(Lee, Hyun Yup),이창섭(Lee, Chang-Sup) 대한조선학회 2004 大韓造船學會 論文集 Vol.41 No.2

상가건물임대차제도의 환산보증금 제한에 대한 고찰 - 부동산중개업자에 대한 설문조사를 통하여 -

유선종(Yoo Seon Jong),이정렬(Lee Jeong Yeol) 한국부동산학회 2005 不動産學報 Vol.24 No.-

1. CONTENTS (1) RESEARCH OBJECTIVES This dissertation clarifies the purpose of business section building rental protective law with an issue of business section building rental system to the center, indicates other concrete problems with it, and offers legislative improvement. (2) RESEARCH METHOD I straighten up the characteristics of business section building rental system conceptional by viewing and analyzing the existing domestic and foreign books and studies. Then, I draw a problem and examine an improvement plan. I inquired into nation real estate intermediation businessman for a trouble experience of a change of rent, a change of lease, a lessee and a lesser and a trouble content analysis of a lessee and a lesser after the business section building rental protective law enforcement. I look into contents and standards of existing business section building rental protective law, compare with reformed bill contents of the Democratic Labor Party-and draw an improvement plan on a basis of the examination result of real estate brokers. (3) RESEARCH RESULTS The regional distribution of the subjects shows that most of the respondents(30.7%) run real estate intermediation in the Capital area and 35.3% of those, in Gyeonggi area. And business opening periods also shows 33% of respondents have started their business from between 1990 and 1999. The recent starters after 2002 also hold a high rate of 24.2%. 2. RESULTS The result of the survey is matched with the plan in which the regulations that protective range be restricted within lease of under a certain degree of security money should be abolished and their application should be extend to all the business section buildings. Because it was desirable that I partly reduced a rental guarantee rise limit, the ceiling good will problem appeared in hire guarantee rise rate 12%. On the rental troubleshooting committee installation, 82.5% agree to the necessity. 3. KEY WORDS Business Section Rental Building System, Real Estate Broker, Questionnaire, Guarantee

협업 컴포넌트 상호운용성을 위한 J2ME 기반 아키텍처 모델링

최성만(Seong-Man Choi),이창목(Chang-Mog Lee),유철중(Cheol-Jung Yoo),장옥배(ok-Bae Chang),이정렬(Jeong-Yeol Lee) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.2Ⅱ

기존의 사용자 및 전사적인 조직의 시스템은 대부분 혼합 및 이질적인 컴퓨팅 시스템을 가지고 있다. 이러한 결과 시스템들 간에 원활하게 작동할 수 있도록 많은 이질적인 인프라의 구축 및 비용이 들어가고 있다. 이런 결과 상호운용성의 문제점이 중요하게 대두되었다. 본 논문에서는 협업 컴포넌트 상호운용성을 위한 J2ME 기반 아키텍처 모델을 제안하였다. 협업 컴포넌트 상호운용성을 위해서 다수의 벤더 환경에서 환경에 대한 기술을 구축할 아키텍처를 정의하였다. 이러한 아키텍처들은 크게 네트워크, 데이터, 애플리케이션, 관리로 이루어진다. 이러한 결과 컴포넌트의 재사용성으로 인해 기존의 다양한 웹 애플리케이션 환경에서 활용이 가능하고 확장도 용이하게 하였다. 또한 모바일 협업 플랫폼 인프라 구축 및 운영비를 절감할 수 있다.