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      • KCI등재SCOPUS

        동진강 수계 농업용수 수질평가

        엄미정(Mi Jeong Uhm),최정식(Jeong Sik Choi),한수곤(Soo Gon Han),김갑철(Kab Cheol Kim),문영훈(Young Hun Moon) 한국환경농학회 2000 한국환경농학회지 Vol.19 No.2

        This study was conducted to monitor the irrigation water qualities along Dong-Jin river watershed. The water quality was surveyed at 6 sites from April to september during 1994∼1998. And the results were as follows : In July and August, water quality was better than that of any other months due to dilution with rainwater. Whereas, it became worse in April but it involved lower contents than limitted contents affected to the crop damage. Content of inorganic components was higher at Jeong-up and Won-pyeong stream. The reason for it that Jeong-up stream was deteriorated with sewage water from Jeong-up city, and Won-pyeong stream has narrow width. Water quality in upstream of Dong-Jin river, was evaluated best conditions in all sampling sites. For investigated period, water quality got worse from 1994 to 1995 but it was getting better to 1998 after 1995, especially at Jeong-up stream. The total equivalent of cation and anion was the highest at April through all months and at Jeong-up stream in sampling sites. Equivalent ratio of cation to anions(∑C/∑A) was higher at May than any other months and lower at Won-pyeong streams than any other sites. The value of most inorganic components was highly correlated with those of other components. But the value of NO₃^--N was not correlated with that of most components, and PO₄^(3-)-P was not correlated with COD, NH₄^+-N, NO₃^--N, SO₄^(2-_.

      • SCOPUSKCI등재

        Cheek Flap을 이용한 안면부 재건

        한예식,홍인식,이정윤,안희창 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.4

        There are several technique for facial reconstruction using local, regional and distant flaps. Most of these techniques require multiple stages, leave poor color match, and create serious complications at donor site. Since 1959, a wide variety of defects in the eyelid and cheek have been reconstructed with Mustarde's cheek flap. This can mobilize a large area to be rotated into the defect, and effectively cover a relatively large defect with minimal distortion and with good color match. Advantage of the cheek flap include easy accessibility and operative technique. In the old age group that present most commonly with eyelid malignancies, there is sufficient laxity of the skin, and therefore, abundant tissue is available to reconstruct the lower lid. Problems which can develop with this flap include hematoma, infection, or flap necrosis early in the postoperative course. Late complications include problems resulting mainly from skin tension and gravity, causing ectropion or lateral canthal distortion. The author experienced excellent functional and esthetic result form 15 cases of facial reconstruction with Mustsarde's cheek flap. We reviewed history and surgical techniques of this flap referring the literature.

      • KCI등재후보
      • 연령에 따른 개구리 피부에 대한 주사전자현미경적 연구(Xenopus laevis)

        한성수,고정식 순천향대학교 1983 논문집 Vol.6 No.4

        Surface structure of the abdominal skins of young (one year old) and aged (five and a half year old) frogs, Xenopus laevis, have been observed by scanning electron microscopy. Pieces of the skin were taken from the central area of the abdomen, fixed in Karnovsky's fixative (phosphate buffer, pH 7.3) and post-fixed in 1% osmium tetroxide (phosphate buffer, pH 7.3). Following fixation, the tissues were dehydrated in graded concentrations of ethanol and amyl acetate (1:1), and were followed by gradual increase in the volume of amyl acetate until a total substitution (100% amyl acetate) was achieved. Amyl acetate in the tissues were replaced with liquid CO₂, and dried in a "Polaron" critical point dryer. Blocks of tissues were oriented, mounted and attached by silver conducting paint on specimen stubs. All specimens were coated with gold in a vaccum evaporator. The samples were studied in a JSM-U3 scanning electron microscpe operated at an acceleration voltage of 15 KV. Observed results were as follow; 1. Based on the surface morphology two types of epidermal cells (Type I and Type II) are recognized. 2. Type I cells are smooth-surfaced and more numerous than type II cells that have irregular surface terrains which appear to result from collections of mucoid substances over areas of crowded microridges. 3. Both type of epithelial cells have numerous microridges of 100~110 nm throughout the surface in young frogs. 4. The microridges in aged frogs are more numerous and wider (160~170nm) than in young ones, and tend to produce variously modified appearance in aged frogs. 5. Along the periphery of epithelial cells are discrete marginal microridges which in young frogs are bridged by interconnecting cross-links.

      • 연령에 따른 개구리 피부의 형태학적 연구(Xenopus laevis)

        한성수,고정식 순천향대학교 1983 논문집 Vol.6 No.4

        Age differences in the skin structure have been studied in young (one year-old) and aged (five and a half years-old) frog, Xenopus laevis. Pieces of the skin were taken from the central area of the back and abdomen, fixed in Karnovsky's fixative (phosphate buffer, pH 7.3) and post-fixed in 1% osmium tetroxide (phosphat buffer, pH 7.3). The sections 1㎛ in thickness were made on a LKB-III ultramicrotome, and were stained with toluidine blue. In order to assess the general level of metabolic activities in epidermal cells, pieces of the skin from the frogs of the two age groups were incubated in amphibian physiological saline containing 50μCi/ml of 5-³H-uridine with a specific activity of 25.9 Ci/m mole (New England Nuclear). The labeling was carried out for 30minutes at 20。±1℃. Sections 1㎛ in thickness were cut on a LKB-III ultramicrotome and mounted on glass slides. The mounted slides were coated with Kodak NTB-3 unclear track emulsion in routine manner, exposed for a period of 1 or 2 weeks, and developed with Kodak D-19. The tissues were studied with light microscope. Observed results were as follow; 1. The epidermis in young frogs is made up of an average of 6.3 and 4.7 layers of epithelial cells at abdominal and back skin, respectively. 2. In aged frog, the number of epithelial cell layers at abdominal and dorsal surfaces increases to 8.8 and 5.6. 3. The thickness of the dermis(spongiosum) in aged frogs is decreased 25% on the abdominal side (from 267㎛ to 207㎛), but is increased by 11% on the dorsal side (from 275㎛ to 305㎛). 4. The nucleolar index and radioactive index, by epithelial cells are drastically reduced in aged frogs.

      • KCI등재후보
      • SCOPUSKCI등재

        一段階 耳介成形術을 利用한 小耳病 再建例

        한예식,이정윤 大韓成形外科學會 1987 Archives of Plastic Surgery Vol.14 No.1

        Total ear reconstrucion has been one of the most difficult problem in plastic surgeon. It required multiple procedures, prolonged hospitalization, high cost, and the final appearance of the reconstructed ear was still far from normal. In 1983, Song and co-workers studying the blood supply to the skin of the auricular area, presented another method of single stage total ear reconstruction. We operated 3 anotic patients with Song`s one stage total ear reconstruction procedure and agreed that this procedure solved some problems, especially shortening of multiple procedures, in classic Tanzer`s procedure. But, another problems were noted in Song`s procedure. 1. One stage technique will require minor secondary procedures for good final results. 2. Post auricular skin grafted area was larger than Tanzer`s procedure. 3. Definition of the cartilage framework was obtuse in early postoperative period, because the contraction of the skin graft and fixation of the skin flap were simultaneously occured. 4. This procedure may have high complication rate.

      • KCI등재후보
      • 어메니티 실천사례 분석과 농촌어메니티계획 과제

        황한철,김정식 한경대학교 2003 論文集 Vol.35 No.-

        Recent years have been widely discussed rural amenity as well as ecological restoration, green tourism, friendly nature, environmental preservation and so on, as way of addressing the various issues in sustainable rural development. After a review of the related preceding researches and practical cases on amenities at home and abroad, this study explores the applicable possibilities of rural amenity in order to vitalize rural economy and rural life. There are most of researches on urban amenities such as settlements, parks, watersides environment and so on. We suggest that rural amenity planning including to rural society, economy, infrastructure should be devised how to preserve rurality and rural vitalization.

      • 농촌마을 정체성의 개념 정립과 확립 방안 모색

        김정식,황한철 안성산업대학교 2002 論文集 Vol.34 No.-

        This study defined the concept of village identities and suggested its establishment schemes for the purpose of preserving rurality and rural vitalization. Rural village's identity was established with the sameness which involved the meaning of continuity and identification, and with the characteristics of individuality which had an uniqueness and an excellence in a space and place of village level. Keeping and raising the village identity is able to stir up the resident self-conceit and do a thing worthy of a village. The establishment schemes for village identity were suggested as follows: 1. To find and maintain the history identity such as historic facts, persons, places and relics; culture identity such as traditional games, festivals and events; landscape identity such as natural landscape, resident landscape, architectures and agricultural landscape; industry identity such as rural tourism resources, special products and so on. 2. To maximize the village speciality and discrimination about various resources, landscape, geographical features and so on. 3. To create the positive village's image through the comprehensive analysis and evaluation of village's characteristics with participatory approaches.

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