강원도 화천군 수달(Lutra lutra) 서식지의 식생 구조

서형수 ( Hyung Soo Seo ),신영섭 ( Young Seob Shin ),이경은 ( Kyung Eun Lee ),김윤미 ( Yoon Mi Kim ),전미나 ( Mina Jeon ),남택우 ( Taek Woo Nam ),한성용 ( Sung Yong Han ),정연숙 ( Yeonsook Choung ) 한국하천호수학회 2014 생태와 환경 Vol.47 No.special

In order to determine whether vegetation would be one of the factors for the selection of otter home range, vegetation structure and other potential factors were studied in Hwacheon, Korea. Thirteen sites, otter’s activity found and not found, were investigated in North Han River and connected tributary streams of Hwacheon-gun. Three types of vegetation were classified by cluster analysis, which is short grass, tall grass and shrub type. Vegetation zone of each channel is composed of either one type, or mosaic of tall grass and shrub type. Short grass type is common in Lake Paro and upper North Han-river where water level is highly variable throughout a year. Therefore, annual species such as Persicaria nodosa, Fimbristylis dichotomam and Chenopodium ficifolium are the most dominant. Shrub type is common at the downstream sites of Jichon stream and along mainstream of North Han River down Lake Paro. A shrub species, Salix koreensis, is the most common. Tall grass type is dominant occupying the most vegetation zone of the tributary channels. Phragmites japonica is absolutely dominant. Due to its dense cover, a few plant species are co-existed. Otter activity was found in all three vegetation types and no marked activity was found at some sites of tall grass type. There is no difference in species composition and physiognomy between tall grass sites with and without otter activity, while it shows significant difference in fish availability between two groups. Overall we found that home range of otters in the region is along the mainstream and downstream of tributary streams with high fish availability in all vegetation types and in various human activity levels.

감광제용 Diazide 유도체의 합성과 감광 특성에 관한 연구

이한섭 용인대학교 자연과학연구소 2002 自然科學硏究所論文誌 Vol.7 No.1

Naphthoquinone diazide derivatives members of quinone diazide compound that are utilizable as photosensitive polymer material were synthesized, and photoresist were prepared by mixing these derivatives with a matrix resin at various weight ratios. Photosensitive characteristics of photoresist were studied by examining UV and IR, relative sensitivity using a Gray scale method, and SEM to alalyze if they can be used as photosensitive material in printing process. Experimental results showed that, by UV, NQD derivatives were photo - converted and developer-soluble photoresist were produced, The mixing ratio of 1 : 4(by mass) of NQD + ballast and m-cresol novolak gave rise to the highest dissolution rate. In addition, photoresist obtained at this condition resulted in the most superior sensitivity and contrast.

천연 Gum의 생체적합성에 대한 연구

이한섭,최성부 용인대학교 자연과학연구소 2008 自然科學硏究所論文誌 Vol.13 No.1

Natural gum films were prepared by solution blending method in the weight ratio of natural gums(Xanthan, Locust bean and Guar) for the purpose of useful bio-compatibility materials. The possibility of bio-compatibility materials, which prepared from natural gums as a skin substitute of rats were evaluated by measuring biodegradability. This biodegradable films were inserted in the back of rats and their of biodegradability were investigated by hematological change evaluation as a function of time to the bio-transformation. These values of bio-compatibility materials films, which prepared from natural gums measured in this study were some stable results at short period with those of ideal skin with bio-compatibility materials.

아닐린으로부터 탈아미노반응과 니트로반응을 이용한 이소퀴놀린(Isoquinoline) 유도체의 합성

이한섭,최성부 용인대학교 자연과학연구소 2008 自然科學硏究所論文誌 Vol.13 No.1

This study is to develop a new synthetic method for the nitroarenes vis non-electrophilic substitution. Direct nitration at the C-1 position of isoquinoline has never been reported and substitution in isoquionoline under the normal nitration condition occurs at C-5 and C-8. We have demonstrated a facile one-step sythetic method for the nitration of isoqunolines at the C-1 position, which involves the electrophilic attack of a DMSO-Ac2O complex, followed by nucleophilic addition of nitrate ion the this intermeddiate. Since the reaction is simple and mild, this method has preparative merit since 1-nitroisoqunolines are nto readily accessible by other methods. Application to the synthesis of poly nitroarenes from the corresponding anilines was also described.

한국어판 병동매일행동척도 개발

임호섭,신경철,함웅,채정호,김한오,정찬호 大韓神經精神醫學會 1997 신경정신의학 Vol.36 No.2

Objectives : Patient's behavior features are important factors which influences the clinical judgement including diagnosis. However, most psychiatrists build up a picture of patients' behavior from an amalgamation of their own brief observations and nurses' reports, which often lack in the objectiveness. Several behavioral scales have been developed to alleviate this difficulty, but the poor efficiency and reliability of these scales have made them less useful. The recently developed Ward Daily Behavior Scale is an objective tool for evaluating all the daily noteworthy behaviors of patients, and is easily applicable to wide ranges of diagnoses and ages. This study tried to prove the reliability and validity of the Ward Daily Behavior Scale-Korean version. Methods : The 112 patients, 63 males and 49 females, at a chronic psychiatric inpatient ward were selected as subjects. Experienced and unexperienced nurses rated patients' behaviors independently with the Ward Daily Behavior Scale-Korean version, after observing behaviors of subjects for 8 hours during day duty time. And then we tested the inter-rater reliability, internal consistency, and concurrent validity of this scale. Results : The Ward Daily Behavior Scale-Korean version proved to be both reliable and valid for measuring of behaviors of psychiatric inpatients. Conclusions : The Ward Daily Behavior Scale-Korean version will be a valuable tool to observe and quantify patients' behavior in psychiatric wards.

키틴에 의한 염색폐수 색도처리에 관한 연구

이한섭 龍仁大學校 自然科學硏究所 1999 自然科學硏究所論文誌 Vol.4 No.1

Chitin, which are known as final biomasses, a kind of natural resources, and chemically structural properties of chitin and treatment system using chitin for dyeing waste water were investigated. Experimental results showed that the specific surface area were increased and particle size were decreased a little in accordance with the repeating number of treatments, and chitin Ⅰ, treated 4 times, with specific surface area 34.82 ㎡/g and geometric mean particle size 18.25 ㎛ was manufactured. The specific surface area was increased because chains of chitin molecules were cut, and therefore its low molecular weights were resulted. In order to understand the adsorption capacity of water, tea bag method was utilized. It was observed that the maximum water content reached above 20 minutes after dipping in distilled water and the water contents were increased with the repeating number of treatments of chitin. The removal efficiency of suspended solids and the variations of turbidity showed high efficiency regardless of the the repeating number of treatments of chitin, and COD values treated with chitin were rised at the beginning on the contrary but the removal efficiency on COD was increased in proportion to the repeating number of treatments of chitin in case of liquid separated by filtration. The repeating number of treatments of chitin had a little effect on the removal efficiency of colority but stirring speed had a great effect on this, which are most hard to treat dyeing waste water. Colority was decreased to 40~60 ADMI as much as the application of effluence standard(60~80 ADMI), and chitin Ⅰ showed the good removal efficiency of colority than that of commercial Aldrich.

탄화수소계 대체세정제를 이용한 스크린 인쇄 세정효율에 관한 연구

이한섭 龍仁大學校 1997 용인대학교 논문집 Vol.14 No.-

Many alternatives cleanser to 1,1,1-TCE & CFC-113 used as cleanser for industrial parts are developed because the cleanser is scheduled to phaseout after 1996. Also, existing cleaner using screen printing are the organic solvents including aromatic compounds carried with poisonous and stench. Besides, cleaning method of current screen printing are for the most part mixed cleaning method of dipping and polish using duster. Accordingly, it had a bad effect to the working environment and the workers body. Therefore, using alternative hydrocarbon cleanser to 1,1,1-TCE & CFC-113 used as cleanser for industrial parts be substituted for existing cleanser against screen printing ink measured the cleaning efficiency according to gravimetric analysis method and property change of gassamer according to Image Analyzer.

Glutaraldehyde를 이용한 설파제의 합성과 지속성에 관한 연구

이한섭,최성부 용인대학교 자연과학연구소 2007 自然科學硏究所論文誌 Vol.12 No.1

Dual actions are the most recently used delivery system in drug study. Dual-action agents are unique chemical entities comprised of two different type of antibacterial compounds covalently linked together in a single molecule in such a way that both components are able to exert their bactericidal properties. Crosslinked sulfadiazine-sulfanilamide such as antibiotics is synthesized by synthetic handle with glutaraldehyde. As a result, New synthetic antibacterial agent exhibited the broad antibacterial activities against Gram(+) and Gram(-) of 4 strains and a long durability supposing that the stomach and blood.

환경친화성을 고려한 인쇄용 감광성 고분자 특성 연구

이한섭 龍仁大學校 2003 용인대학교 논문집 Vol.21 No.-

Naphthoquinone diazide derivatives members of quinone diazide compound that are utilizable as photosensitive polymer material were synthesized, and photoresist were prepared by mixing these derivatives with a matrix resin at various weight ratios. Photosensitive characteristics of photoresist were studied by examining UV and IR. relative sensitivity using a Gray scale method, and SEM to analyze if they can be used as photosensitive material in printing process. Experimental results showed that, by UV, NQD derivatives were photo-converted and developer-soluble photoresist were produced. The mixing ratio of 1:4(by mass) of NQD+ballast and m-cresol novolak gave rise to the highest dissolution rate. In addition, photoresist obtained at this condition resulted in the most superior sensitivity and contrast.

지방족 C -아민류 추출제에 의한 유기산의 반응 추출

이한섭,강안수,류운형 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

The effects of extractant species, concentration, solvent and temperature on the degree of extraction were investigated, and also the effects of concentration of stripping phase and temperature on the degree of re-extraction were investigated in physical and reactive extraction system using equilibrium extraction unit. The used organic acids were acrylic acid, methacrylic acid, pyruvic acid, α-ketoglutaric acid, and the extractants were n-octylamine(OA, primary amine), di-n-octylamine(DOA, secondary amine), tri-n-octylamine(TOA, tertiary amine) and Aliquat 336. (TOMAC, quaternary ammonium salt). N-butylacetate(n-BAc), methyl-isobutyl-ketone(MIBK), chloroform, xylene and kerosene were used as solvents. The effect of the degree of re-extraction was investigated using alkaline solution of NaOH and Na₂CO₃. We found that the degree of extraction for reactive extraction was 2∼9 times than that for physical extraction and that the effect of extractants on the degree of extraction of organic acid was the order of OA>TOMA>DOA>TOA. And the degree of extraction was increased with increasing the concentration of extractants. In solvent effect, solubility parameter was more effective than dielectric constant of solvent, and the degree of extraction increased as the difference of solubility parameter of solvent and solute decreased, therefore the order was kerosene>xylene>chloroform>MIBK>n-BAc. Also, the degree of re-extraction increased with decreasing basicity of stripping phase, therefore, the degree of re-extraction for re-extraction of organic acid was higher in Na₂CO₃solution than in NaOH solution. As a result of the effect of temperature, the degree of extraction was decreased and re-extraction was increased with increasing temperature, respectively.