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      • A Study of Fashion Design using Mondrian's Neo-Plasticism - Using Textile CAD System -

        Row Young,Lee Youn-Hee The Costume Culture Association 2004 Fashion, industry and education Vol.7 No.2

        By introducing Mondrian's creative world into the field of fashion design, I examined how its application can satisfy not only visual expressions but also the desire of fashion design for its simplicity, individuality, and sensitivity. As a program developing designs and guiding how to produce, the textile CAD system helps to develop a variety of textile systems. In case of dying or textile printing, a variety of free expressions of print patterns and functional color simulations are possible by the configuration of colors or enlargement of design. It can also confirm the flexible simulation with a variety of color changes through the monitor by treating the knit design with dots. Especially in case of consulting for the design with ordering customers, the system is very speedy and effective, because it is possible to correct on the spot those complicated elements of designs and color sensation and see the prints in the light of marketing, processing and artistic value. Mondrian's Art, beauty of balance and proportion in the Mondrian's plastic forms, the changes of coloring and texture were added into vertical and horizontal lines and the divisions of faces for the dressmaking. Whether they were the reciprocal action of human body, texture and color or the reciprocal action of human body and colors, these changes will be interpreted differently, depending on the individuals' experiences and psychological moods of situations. The emphases of the sense are also different, depending on the activity and functionality.

      • KCI등재
      • SCIESCOPUSKCI등재

        SEPARATION OF PERILLYL ALCOHOL FROM KOREAN ORANGE PEEL BY SOLVENT EXTRACTION AND CHROMATOGRAPHY

        Row, Kyung Ho,Jung, Yong An 한국화학공학회 1998 Korean Journal of Chemical Engineering Vol.15 No.5

        Perillyl-alcohol, abundant mainly in oranges, has chemotherapeutic activity against carcinogenesis. The peel of Korean oranges was extracted by methanol, and the extract was partitioned by methanol-extract/water/chloroform, (20/5/30 vol%). To concentrate perillyl alcohol of the water-phase in the previous partition step, a glass column (2.5 i.d.×15 ㎝) with reversed-phase C_(18) packings (40-63 ㎛) was used. Finally, to obtain perillyl alcohol in a pure form, reversed-phase high-performance liquid chromatography (RP-HPLC) was applied. Mobile phases used were water, methanol, and acetonitrile. The flow rate of the mobile phase was 1 ㎖/min and UV wavelength was fixed at 205 nm. The resolution of perillyl alcohol from Korean orange peel was achieved on a μ-Bondapak C_(18) column (3.9×300 mm, 10 ㎛) and in-house chromatographic column packed with l.5 ㎛ C_(18) preparative packings. From the experimental results, the mobile phase composition was water/acetonitrile, (65/35 vol%) and the retention time of perillyl alcohol was 20.5 min in the analytical μ-Bondapak column. The effect of injection volumes was investigated in the preparative column.

      • Computational Algorithm to Predict Peak Profiles in Preparative High - Performance Chromatography

        Row, Kyung Ho,Larin, Alexander V 한국화학공학회 1996 NICE Vol.14 No.1

        the computational algorithm and the Prep-LEAR program have been performed on the basis of the LEA model of chromatography. This program intends for calculation of peak profiles in non-linear high-performance chromatography and uses unsimplied adsorption isotherm equations. The computational algorithm and program rave been tested by applying these to experimental data of thymine adsorption under conditions of reversed-phase high-performance liquid chromatography. The results of numerical calculations fur different sample sire introduced agree satisfactorily with experimental data and show the characteristic properties of high-performance chromatography. The usefulness of the Prep-LEAR program was confirmed by predicting peak profiles in preparative adsorption chromatographic processes.

      • Effect of Sample Sizes on Peak Shapes in Preparative Liquid Chromatography

        Row, Kyung Ho,Lee, Youn Yong 한국화학공학회 1992 NICE Vol.10 No.4

        Cyclobutane pyrimidine dieters and monomers of thymine were separated on a C_(18) reversed-phase high performance liquid chromatographic column. Using the two mathematical models, the effect of the sample sizes on peak shapes in preparative liquid chromatography was investigated. One of them is. he linear kinetic model, and the other is based on the nonlinear adsorption isotherm. In case of small injections of sample, the good agreements between the calculated value by the linear kinetic model and experimental data were achieved. However, when sample size is increased, this model lacks in the prediction of large concentration profile of sample. However, the nonlinear model permits the accurate prediction of the location of the component hand and the determination of the appropriate time to start and stop collection of the enriched fraction at the higher concentrations of monomer and the lower that of dimer. Therefore, extremely small amounts of dieter can be extracted from monomer solutions.

      • A Chromatographic Theory Based on the Concept of a Layer of Equilibrium Adsorption

        Row, Kyung Ho,Larin, Alexander V 한국화학공학회 1995 NICE Vol.13 No.6

        The LEA model has been analyzed by comparing to other chromatographic theoretical approaches. In the LEA model a layer of equilibrium adsorption, L serves as an effective kinetic constant. For the layer L. the concentration issuing from this layer is in equililhriur with the average value of adsorption on the whole layer at any moment of time. The value of L, is determined from all factors which broaden the chromatographic zone. Such an approach permits us to combine the features of the mass balance (solute Continuity in a chromatographic column), of the mass transfer phenomenon, and of the trdsorption isttherm into a single first order differential equation. Apart from other layer-by-layer models, the LEA modtl supposes that over the whole column a continuous (real) distribution of adsorption a (1, t) and conccruration c (L, t) is observed. The usefulness of the LEA rrudel in developing a chromatographic theory has horn discussed.

      • Simulation of the Combined Continuous and Preparative Separation of Three Close - Boiling Components in a Gas - Liquid Chromatography

        Row, Kyung Ho,Choi, Dae Ki,Lee, Youn Yong 한국화학공학회 1991 NICE Vol.9 No.1

        The catalytic oxidative coupling of methane to ethylene and ethane with manganese oxide catalysts promoted with alkali metal and alkali metallic-chloride has been studied at atmospheric pressure in a fixed bed flow reactor. The main studies of reaction were carrel out over maganese oxide catalysts promoted with sodium chloride and the structure and surface morphology of these catalysts was characterized by an X-ray diffraction and a scanning electron microscope. The powdered MnO₂ was changed into Mn₂O₃ and MnO₂ containing alkali metallic-chlorides was nut changed to n.?w ternary oxides but changed into Mn₃O₄, and/or Mn₂O₃, at higher calcination temperature(above 780℃). The optimum content of NaCl promoted was 10-20 wt%, an in over 10 wt%, the conversion and the selectivity were kept constant. The main factor on deactivation of catalysts was the loss of the promoter(NaCl). The addition of alkali metal salts to manganese oxide catalyst has enhanced C₂(C₂+C₂H_6) selectivity due to neutralizing acid sites more than the electronic factor. It was confirmed that chlorine in a kali metallic-chloride has enhanced the formation of C₂H₄ resulting in a good C₂-yield(up to 25.7%).

      • SCOPUSKCI등재

        High - Purity Separation of Phospholipids by Preparative High - Performance Liquid Chromatography

        Row, Kyung Ho,Kang, Duk Hui 한국공업화학회 2001 Journal of Industrial and Engineering Chemistry Vol.7 No.3

        Soybean lecithin (phospholipids), mainly phosphatidylethanolamine(PE), phosphatidylinositol(PI), and phosphatidylcholine(PC), is a commercial by-product of vegetable oil production. The purpose of this work was to investigate the effects of packing size in a chromatographic column, and to obtain the optimum mobile phase composition for preparative work. Normal-phase High-Performance Liquid Chromatography (HPLC) was applied. Hexane, methanol, and isopropanol(IPA) were used as the ternary mobile phases. With the commercially available Nova-Pak column (4 m packing size, 3.9 ㎜ i.d., 15㎝ length), the gradient condition of mobile phase composition was that hexane linearly decreased from 85 to 0 vol.% and IPA and methanol, linearly increased 10 to 30 and 5 to 70 vol.% in the following two steps during the total run time of 25 min at the mobile phase flow rate of 1.5 ㎖/min. For the three other preparative packing sizes experimented were 15, 5/20, and 25/40㎛, the optimum mobile phases were experimentally obtained. The resolutions between PE and PI, PI and PC with 15㎛ packings was better over the other two preparative packings. A slight change in mobile phase composition was observed to increase the resolution at the same mobile phase flow rate.

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