• Title/Summary/Keyword: Refining

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The bibliographical study on drug-processing about Pyritum (자연동(自然銅)의 수치법(修治法)에 대한 문헌적(文獻的) 고찰(考察))

  • Min, Pyoung-gee;Seo, Young-bae
    • Journal of Haehwa Medicine
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    • v.10 no.1
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    • pp.47-53
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    • 2001
  • In the result of investigating traditional chinese medical literatures to understand drug-processing about Pyritum, we could reach conclusions as follows: 1. Pyritum are divided into fresh Pyritum, calcining Pyritum, tempered Pyritum with vinegar by methods of drug-processing. 2. The methods of drug-procession about Pyritum like calcination, quenching, refining drugs with water or medicinal broth of Glycyrrhizae Radix(licorice), boiling with medicinal broth of Glycyrrhizae Radix(licorice) were used complicately. 3. Calcining Pyritum are grinded easily, convenient to apply a pill and powder and As, S are easily removed. Quenching Pyritum act on liver channel and then are reinforced the effects of relieving blood stasis, Pain and gushed out effecive ingredients. Refining Pyritum with water are reinforced the effect of tranquilizing the mind and clearing heat. above results indicates that using calcination, quenching and refining drugs with water together is the best method of drug-processing about Pyritum.

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A NOVEL METHOD FOR REFINING A META-MODEL BY PARETO FRONTIER (파레토 프론티어를 이용한 메타모델 정예화 기법 개발)

  • Jo, S.J.;Chae, S.H.;Yee, K.J.
    • Journal of computational fluids engineering
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    • v.14 no.4
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    • pp.31-40
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    • 2009
  • Although optimization by sequentially refining metamodels is known to be computationally very efficient, the metamodel that can be used for this purpose is limited to Kriging method due to the difficulties related with sample points selections. The present study suggests a novel method for sequentially refining metamodels using Pareto Frontiers, which can be used independent of the type of metamodels. It is shown from the examples that the present method yields more accurate metamodels compared with full-factorial optimization and also guarantees global optimum irrespective of the initial conditions. Finally, in order to prove the generality of the present method, it is applied to a 2D transonic airfoil optimization problem, and the successful design results are obtained.

A Method of Service Refinement for Network-Centric Operational Environment

  • Lee, Haejin;Kang, Dongsu
    • Journal of the Korea Society of Computer and Information
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    • v.21 no.12
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    • pp.97-105
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    • 2016
  • Network-Centric Operational Environment(NCOE) service becomes critical in today's military environment network because reusability of service and interaction are being increasingly important as well in business process. However, the refinement of service by semantic similarity and functional similarity at the business process was not detailed yet. In order to enhance accuracy of refining of business service, in this study, the authors introduce a method for refining service by semantic similarity and functional similarity in BPMN model. The business process are designed in a BPMN model. In this model, candidated services are refined through binding related activities by the analysis result of semantic similarity based on word-net and functional similarity based on properties specification between activities. Then, the services are identified through refining the candidated service. The proposed method is expected to enhance the service identification with accuracy and modularity. It also can accelerate more standardized service refinement developments by the proposed method.

Controlled Hydrodynamic Cavitation-assisted Nanoreactor for Less Chemical-Higher Yield in Neutralization of Vegetable Oil Refining Process (Less Chemical-Higher Yield 탈산공정을 위한 수력 공동현상 유도 나노리엑터)

  • Kim, Ji-In
    • Food Science and Industry
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    • v.51 no.2
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    • pp.114-126
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    • 2018
  • The production of high quality oil to meet new standard needs a 'next generation' innovative oil refining tool in paradigm shift. 'Nanoneutralization' using controlled hydrodynamic cavitation-assisted Nanoreactor is successfully being introduced and commercialized into edible oil industry and it plays a key driver for sustainable development of food processing. This emerging technology using bubble dynamics as a consequence of Bernoulli's principle by hydrodynamic cavitation in Venturi-designed multi-flow through cell is radically changing the conventionally chemical-oriented neutralization. Nanoneutralization derived by the creation of nanometer-sized bubbles formed through scientifically structured geometric channels under high pressure has been proven to improve mass transfer and reaction rate so substantially reduce the chemicals required for refined vegetable oil and to increase oil yield while even improving oil quality. More researches on science behind this revolutionary technology will help usto better understand the principle and process hence makes its potential applications expandable in extraction, refining and modification of fats and oils processing.

Study on Refining Technique of Raw Lacquer (I) - Properties of Raw Lacquer, Refined Lacquer and Film according as Their Collecting Places and Seasons - (옻칠의 정제기술에 관한 연구(I) - 생산지·생산시기에 따른 생칠과 옻칠의 특성 및 도막 특성 -)

  • Song, Hong-Keun;Han, Chang-Hoon
    • Journal of the Korean Wood Science and Technology
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    • v.29 no.1
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    • pp.31-42
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    • 2001
  • In this study, we obtained fundamental data about Korean raw lacquer's physical and chemical properties to produce high quality lacquer. The tested raw lacquers were obtained from Won-ju in Korea, Shanxishang, Guizhoushang, Anhuishang in China. The drying time of refining lacquers, tensile strengths of dried films and uniformity of films are measured. The refined lacquers were prepared by experimentally scaled refining equipment. Films of lacquer were applied on glasses by film applicator. This films were tested by universal strength test machine. The films were pictured by scanning electron microscopy and confocal microscopy to define the uniformity of them. The refining method were not different among three different kind of raw lacquers which were different their collecting time and places. But the viscosity of them were quite different. When black refined lacquer is made with iron powder, the adding time of iron powder is critical to control the viscosity of it. The refining times, viscosity and tensile strength of refined lacquers were not depended the method of refining condition but the place of collecting of raw lacquer.

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Changes of Corrective Astigmatism Values Depending on Position of Circle of Least Confusion in Astigmatic Refining Test Using Cross Cylinder (크로스실린더를 이용한 난시정밀검사에서 검사 전 최소착란원 위치에 따른 난시교정값의 변화)

  • Kim, Sang-Yeob;Lee, Min Jae;Lee, Kang Cheon;Lee, Tae Hui;Moon, Byeong-Yeon;Cho, Hyun Gug
    • Journal of Korean Ophthalmic Optics Society
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    • v.20 no.3
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    • pp.349-354
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    • 2015
  • Purpose: To investigate the changes of corrective values of astigmatism caused by the position of circle of least confusion on retina in refining astigmatic test using cross cylinder. Methods: 62 subjects (115 eyes) aged $22.24{\pm}2.48$ years participated for this study. After astigmatic test using a radial chart, refining test was performed using a cross cylinder in a condition of maximum plus to maximum visual acuity (MPMVA). Astigmatic refining test was repeatedly performed in each condition of which S+0.75 D, S+0.50 D, S+0.25 D, S-0.25 D, S-0.50 D, and S-0.75 D are added to spherical lenses of MPMVA. The measured values were compared with the values in MPMVA condition. Results: As compared with values in condition of MPMVA, change of astigmatic axis was increased with add the power of (+) spherical lenses and (-) spherical lenses. In same spherical condition, change of astigmatic axis was decreased with increment of astigmatic power (p<0.05). The corrective power of astigmatism was reduced with increment of (+) spherical lenses (p<0.05), and was raised with increment of (-) spherical lenses compared with the power in MPMVA condition. In case of adding (+) spherical lenses, difference of astigmatic power increased with increment of corrective astigmatism power in same test condition. Conclusions: In order to obtain a proper values for corrective astigmatism, position of circle of least confusion should be accurately adjusted before the performing an astigmatism's refining test.

Leaching Characteristics of Arsenic and Heavy Metals and Stabilization Effects of Limestone and Steel Refining Slag in a Reducing Environment of Flooded Paddy Soil (담수된 논토양의 환원 환경에서 비소 및 중금속의 용출특성과 석회석 및 제강슬래그의 안정화 효과 검토)

  • Yun, Sung-Wook;Kang, Sin-Il;Jin, Hae-Geun;Kim, Ha-Jin;Yu, Chan
    • Journal of agriculture & life science
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    • v.45 no.6
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    • pp.251-263
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    • 2011
  • In order to investigate treatment effects of limestone and steel refining slag for paddy soils contaminated with arsenic and heavy metals, a lab-column test was carried out under reducing environments of flooded paddy soils. In conditions of the flooded paddy soils, at the point of time when iron and manganese were reduced and leached rapidly, heavy metals also leached rapidly, and some leachate samples from an untreated soil exceeded regulatory standards. On the contrary, all samples from soils treated with limestone 5% and steel refining slag 5% respectively were below the regulatory standards, showing much lower heavy metal concentrations than in the untreated soil. Arsenic increased continuously during the observation period according to its typical characteristics, and along with decreasing redox potential, arsenic was expected to leach as $H_3AsO_3$-of form $A^{3+}$ with high mobility and strong toxicity. Limestone and steel refining slag showed high treatment effects against heavy metals present in soil and steel refining slag especially showed the high treatment effects against arsenic.

Study of Silk Lousiness (II) (견사 Lousiness에 관한 연구(II))

  • 최병희;김낙정;박광의;남중희
    • Journal of Sericultural and Entomological Science
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    • v.4
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    • pp.63-68
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    • 1965
  • This treatise was carried out to study the hereditary phenomenon of silk lousiness and the interaction of genes related with silk lousiness. It was also studied how to improve the silk lousiness of general raw silk by refining process because the selective process was found as unsatisfactory method. The conclusions reached were as follows. A. Conclusions related with genetic problem. 1. The decreased effects of the lousiness were 11 % in the F$_1$ hybrids. 2. Lousiness was considered to inherit as the incomplete dominance. 3. The effects of the lousiness gene were additive, and the lousiness of raw silk might be influenced by more than two genes. 4. The quantitative characters of cocoons were not genetically correlated with the occurrence of lousiness. 5. Lousiness could not be said to occur more in the heavy-cocoon strains. 6. The microscopic lousiness test of this paper showed the same result of the international exforiation test. B. Conclusions related with lousiness improvement. 1. Raw silk was able to be refined by the employment of 0.2% cationic softener solution for 30 minutes at 95$^{\circ}C$, supressing the occurrence of lousiness. 2. Anionic chemical softener was not available for silk refining process. 3. The above cationic softener refining prosess did not cause any physical defect for the silk fiber. 4. Soap refining process caused silk lousiness easily.

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Study on Refining Technique of Raw Lacquer (II) - Refining and Mechanical Properties of Refined Lacquer according as Mixing Rate of Components - (옻칠의 정제기술에 관한 연구(II) - 조성분 배합에 따른 정제특성 및 기계적 성질 -)

  • Song, Hong-Keun;Han, Chang-Hoon
    • Journal of the Korean Wood Science and Technology
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    • v.29 no.1
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    • pp.43-51
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    • 2001
  • When percentages of the component of raw lacquer were changed by adding each components that is urushiol, polysaccharide and glycoprotein, the physical properties of refined lacquer were changed and the period of refining also were changed. When polysaccharide component extracted from raw lacquer was added in raw lacquer, the period of refining was shortened about 1/3 times and this refined lacquer film was dried faster than the refined lacquer which was not added any other components. When urushiol extracted from raw lacquer was added in raw lacquer, the transparency of dried film was improved. A case of Guizhoushang was improved of the tensile strength of dried film. When both urushiol and polysaccharide were added in raw lacquer, the drying time of refined lacquer was shortened and the tensile strength of them also was improved.

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Refining of Squid Viscera Oil (오징어 내장유의 정제)

  • Ha, Jin-Hwan;Lee, Eung-Ho;Kim, Jin-Soo
    • Applied Biological Chemistry
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    • v.40 no.4
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    • pp.294-300
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    • 1997
  • As a part of basic investigation for utilizing by-products derived from marine food processing more effectively as a food source, refining of viscera oil of squid caught off Newzealand were investigated. In the process of refining, degumming with 3% of phosphoric acid at $60^{\circ}C$ for 30 min was effective in removing phosphatides, and optimal condition to neutralize was treating with 0.6% excess of 20% sodium hydroxide solution at $80^{\circ}C$ for 20 min. Bleaching was optimized by adding 10% activated clay and treating for $100^{\circ}C$ for 20 min under vacuum, and deodorizing was done by steam destillation at $180^{\circ}C$ for 60 min under 4 torr of vacuum. Acid value, peroxide value and chromaticity of refined squid viscera oil were 0.20, 0.8 meq/kg and 0.019, respectively. The ratio of polyenoic acid composition to saturated acid composition of refined squid viscera oil was 1.28 and its major fatty acids were 16 : 0, 18 : In-9, 20 : 5n-3 and 22 : 6n-3.

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