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휴전선 (休戰線) ( D . M . Z . line ) 부근 3폭탄호 내의 수생곤충상 (水生昆蟲相)
김재원,이유수 ( Jae Won Kim,Uu Su Lee ) 한국하천호수학회 1977 생태와 환경 Vol.10 No.3·4
There are many pools made by the explosions of bombs during Korean War in 1950. These pools near D. M. Z have been left alone for 25 years. We chose three pools of these, and investigated macro-living animals, aquatic insects, and plankton living in these three pools from March 1974 to Agust 1974. (1) The comparison mark of the depth and quantity of water of these pools is as follows: A pool B pool C pool. And the result of the analysis on the quality of water of these pools is A pool B pool C pool. These mean that A pool has changed meed more exteremely than B and C pool. (2) In spite of the macro-living animals of C pool beinng fewer than those of the others, the body-weight of macro-living animals of C pool is greater than those of the others. This means that C pool is superior to the others on the view point of food chain. (3) Lefua costata can live in all these three pools, and the individual number and body-weight of it is the greatest of all. Therefore it may be called dominant species. Cambaroides similis, Moroco Oxycephalus, Misgurmus anguillii caudatus are the second. (4) As for the water insects, C pool is also superior to the others in respect of the individual number or body-weight of the insects. The insects living in these three pools are, for the most part, Hemiptera are flesh-eating insects and like to live in stagnant water. (5) Aquarius paludum, Ranatra chinensis, and Notonecta sp. live in all these three pools, and these sorts of insects classified as Hemiptera can fly. And other two or three sorts of insects live in A pool and B pool, or B and C pool. (6) Volvox aureus of phy to-plankton and Daphnia pulex of zoo-plankton are most numorous.
김재원,이규환,정달언 ( Jae Won Kim,Kiu Whan Lee,Dal Un Chong ) 한국하천호수학회 1978 생태와 환경 Vol.11 No.1·2
We investigated the aquatic insects living in the mountain streams of the valley of Mount Kye Ryong comparing with the plant vegetation of the valley, from February 20th 1975 to August 15th 1975. (1) As for the plant vegetation, we examined the quantity of the forest and grass vegetation on the ground of the both sides of the mountain streams of this valley. (2) For the purpose of this investigation, we examined the quality of water of the streams. (3) Through the examination on the quantity of the aquatic insects, we wrote the biotic index by means of Beck Tsuda Method. (4) It can be asserted that the mountain streams of this valley aren`t tainted, through the result of the examination on the aquatic insects of this area. (5) The forest and grass vegetation of this area have strong influence on the quality of water, and are closely related with the quantity of the water insects of this area. (6) On the view point of taxonomy, there are 61 sorts of the aquatic insects in this area: 21 sorts of the aquatic insects in this area:21 sorts of Trichoptera, 15 sorts of Ephemeroptera, 9 sorts of Plecoptera, 5 sorts of Odonata, 4 sorts of Coleoptera, 3 sorts of Hemiptera, 2 sorts of Diptera, one sort of Megaloptera, and one sort of Lepidoptera. (7) We think that this area is suited for the national park, paying due regard to the conditions of this area.
1P-206 Preparation of UV-Curable Gelatin Derivatives for Injectable Particles
김재원,이태훈,노승현,김신웅,손태일 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
Gelatin is main constituent of the skin, bone, and connective tissue of animal. It has properties such as biocompatibility and biodegradability. it is widely used to biomaterial for drug delivery. Therefore, gelatin derivative was used to form particle containing drug and to make sustained drug effect to injection site. Azido group was introduced into the gelatin for preparation of UV-curable Gelatin derivative. If Az-Gelatin particle form was injected into the body, it was slowly biodegraded and made a long-lasting effect on a certain site. 1H-NMR and FT-IR spectroscopy were demonstrated that azido group was introduced into Gelatin. The ability to encapsulate drug was confirmed by fluorescent protein using fluorescence microscope. Based on these characteristics, Az-Gelatin is expected to be application in medical field.
김재원,Atsushi Tamura,Sachiko Tsukita,박성수 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.99 No.-
Immature cell monolayers are vulnerable to tensile strain, which can cause severe diseases includingfibrosis, cancer, and atherosclerosis. However, little is known about how immature cell monolayersrespond to tensile strain. To study the effect of tensile strain on the morphology of cells in immaturemonolayers, we developed a miniaturized stretching device that allows stable real-time imaging ofchanges in cell shape induced by uniaxial static stretching of up to 20%. Upon stretching, the shape of cellsin the immature (2 day-cultured) monolayer changed dynamically, unlike in the mature (7 day-cultured)monolayer. Dynamic changes in the immature cell monolayers induced by tensile strain can be explainedby the increase in di-phosphorylated myosin light chain (pp-MLC), which initiates actomyosincontraction. We suggest that our stretching-observation system can be used to investigate themorphological response of epithelial cell monolayers to tensile strain.
Preparation of UV-curable alginate derivatives for drug immobilization on dressing foam
김재원,김은혜,한가득,노승현,편도기,伊藤喜浩,나재운,이재관,손태일 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.54 No.-
The purpose of this study was to develop dressing foam with drug immobilization abilities by using Azidophenyl alginate (Az-alginate). We characterized prepared Az-alginate. Through the patterning test, immobilization of drug was confirmed. Degrees of photo-curing were identified by the photo-curing ratio test. Cytotoxicity test confirmed that Az-alginate was biocompatible. The protein releasing test measured the degree of drug released according to the concentration of Az-alginate. By examination of the water absorbency and moisture vapor transmission rate, characteristics of the dressing foam with photo-cured Az-alginate were measured. From the results of these tests, Az-alginate can be applied to the dressing foam.
김재원,강남현,박영도,김동철,강문진 대한금속·재료학회 2014 대한금속·재료학회지 Vol.52 No.4
In this study, the effect of the material strength grades of cold rolled dual phase 590, 780, and 980 MPasteels on the weld strength of gas metal arc welding lap joints is investigated. With increasing strengthgrades of the base metal, the bead geometry is similar for identical welding currents and speeds. However,the failure location changes from a base metal to a fusion zone and the joint efficiency decreases withincreasing material strength grades. This is attributed to the changes in the location of minimum hardnessthat result from the heat-affected zone softening phenomena. Joint efficiency is related to the ratio betweenthe base metal hardness and minimum hardness of the welds. A prediction formula for joint efficiency (η) isobtained in terms of proportion of base metal hardness and minimum hardness (HMIN/HBM) as follows:η = 0.801 (HMIN/HBM) + 20.0.
남한강상류의 (南漢江上流) 어류상과 (魚類相) 수생곤충상 (水生昆蟲相)
김재원,이병기 ( Jae won Kim,Pyong Ki Ree ) 한국하천호수학회 1975 생태와 환경 Vol.8 No.3·4
(1) This investigation had been made by the writers, KIM and REE, from the 30th of Jul. in 1972 till the 25th of Aug. in 1975. (2) Investigated fauna of fish and water insects in the mountain streams of the Han river. (3) Water temperature was as follows; in the spring 5∼10℃, in the summer 26∼27℃ C, in the winter 2∼3℃. (4) Collected 16 species of mountain stream fishes in Dong River(east side river) and 20 species in Suh River(west side river). (5) These fishes were separated into those living in the abyss or rapids and some are recognized living in both the abyss and rapids. (6) In winter rapids fish is more abundance than in summer, above all Liobagrus andersonii` Gobiobotia brevitarta and Coreoperca herzi is much more abundance. (7) In opposition to it, in summer rapids, Microphysogobio longidorsalis is much more abundance than in winter rapids. (8) Coreoleuciscus splendidus were not able to be collected in summer. rapids but were collected in abundance in winter rapids. (9) 63 species of water insects collected are as follows; Ephemeroptera …… 20 Plecoptera…… 2 Trichoptera …… 20 Hemiptera …… 1 Diptera …… 5 Megaloptera …… 1 Coleoptera …… 4 Other animals …… 6 Odonata …… 4 Total …… 63 (10) Among these 25 non mentioned species are included. (11) In quantitive collection of water insects, both at the upper part of the streams individual number, body weight, and species number were much higher than at the lower part of the streams. (12) The reason is thought to be the dirtiness from the removed water of the cement factory and the colliery near by.