• Title/Summary/Keyword: Property of Matter

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Fundamental Studies on the Characteristics of the Surface Electrokinetic Behavior of Particulate Matter as an Extensive Property (입자성 물질의 크기성질로서의 표면 전기적 특성 규명에 대한 기초연구)

  • O, Se-Jin;Kim, Dong-Su
    • Journal of Korean Society of Environmental Engineers
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    • v.32 no.6
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    • pp.581-586
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    • 2010
  • Generally, electrokinetic potential has been considered as an intensive property. In other words, electrokinetic potential is not affected by the amount of particulate matter. Montmorillonite, one of essential inorganic matter, was chosen to measure electrokinetic potential. The result of electrokinetic potential measuring experiment showed that the value observed to decrease as the amount of montmorillonite clay increased. This is due to the fact that total ions that adsorbed per unit mass were decreased as the amount of montmorillonite was increased. As a result, electrokinetic potential is considered as an extensive property. By using these results, total interaction energy of suspension was also checked, and revealed that total interaction energy was decreased as the amount of montmorillonite increased.

Property of Carboxylic Polyester Powder Coatings with Different Hardeners (경화제에 따른 열경화성 분체도료의 물성 비교)

  • Choi, Seung-Ok;Kim, Eun-Mi;Yoo, Jung-Hee;Jeong, Noh-Hee
    • Journal of the Korean Applied Science and Technology
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    • v.28 no.3
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    • pp.351-358
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    • 2011
  • It was researched to be alternative of TGIC type hardener with human hazard element as PT 910 mix powder paint with hardener. Generally PT 910 was compared with TGIC & Epoxy resin of hardener to be used at thermosetting powder paint. We inquired a property of matter for paint through Gel time, glass transition temperature, melting point and a property of matter for film through a property of adhesion, a property of tolerance, softness, gloss, acid-resistant, alkali-resistant, salt water spray-resistant, facilitation climatic. When PT 910 is used of hardener, it was shown the excellent results in gel time, softness, salt water spray-resistant, fracilitation climatic and the similar results in melting point, a property of tolerance, a property of adhesion, gloss, acid-resistant, alkali-resistant, as compared with the powder paint used by TGIC hardener. The glass transition temperature was little low. But there was slightly different results. After the study results, we reached the conclusion that thermosetting powder used by PT 910 is alterative to by TGIC hardener.

IMPLIED WARRANTY Concerning the Intellectual Property Infringement in the Field of the Information Technology(IT) (정보통신(IT) 분야에서의 제 3자 지적재산 침해에 따른 IMPLIED WARRANTY에 관한 고찰)

  • Jo, Ji-Hong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.36 no.5B
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    • pp.484-489
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    • 2011
  • Most of IT small businesses in Korea are companies which usually take parts from the technically advanced companies and assemble the parts into a complete whole for big companies. Intellectual property-related issue of IT small businesses in Korea is not the direct action or claim but the matter of contract concerning the 3rd party intellectual property infringement or the matter of each of the applicable law on the implied liability issues. Because bargaining power of the IT small businesses is not as big as the technically advanced companies, they can not receive explicit guarantees. Therefore, government-affiliated organization should concern about this matter of contract.

Regression Analysis on the Dispute Cost Property in Apartment Housing Claims (비용항목의 희귀분석을 통한 공동주택 하자분쟁의 비용특성연구)

  • Kang, Yu-Mi;Kim, Beop-Su;Park, Jun-Mo;Choi, Jeong-Hyun;Seo, Deuk-Seok;Kim, Ok-Kyue
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2010.05a
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    • pp.225-228
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    • 2010
  • It is an social issue that is various claim related on the defect of apartment house. The cost of defect repair is the most important matter that residents dispute constructers with the huge time wasting and cost loss. For resolve the matter of defect claim, it must to be analyze to the cost property that study and find to pending issue about the cost of defect repair. Therefore this study is investigated the cost property of defect repair relation on correlation analysis and regression analysis around the judgement cost. Consequently, cost of the judgment is associated with cost of the accusation and cost of the defect repair, is recognizable as them that is closely connected. Meanwhile, the more time of take effect and time of lawsuit increase, the more cost of the judgment decrease by draw the regression equation. On the contrary, there are same aspects in the case on the cost of the accusation and cost of the defect repair.

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Studies on the Natural dyes(II) - Dyeing of silk fibers by Gromwell color matter - (천연염료에 관한 연구(II) -자근색소에 의한 견섬유염색 -)

  • Cho Kyung Rae
    • Journal of the Korean Society of Clothing and Textiles
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    • v.13 no.4
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    • pp.370-379
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    • 1989
  • In previous paper, the optical behavior of coloring matter of Cromwell under several conditions were investigated. In this paper, the fading behavior of color solution extracted from Growell by methanol, dyeing properties of this color on the silk fibers in water and methanol, the three property of color of dyed silk fabrics, and fading behavior of dyed silk fabrics with Cromwell color under light and washing were discussed.

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Measurement of Gas Solubility and Mechanical Property for Bumper Polymer (범퍼용 수지의 gas용해도 및 물성 측정)

  • 이정주;차성운;이경수
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.1366-1369
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    • 2003
  • Today, the industries use polymer material for many purpose. Specially, it is important in automobile industry because tile costs of polymer hold high proportion of the overall cost. If we reduce the weight of automobile, fuel efficiency of car is raised and cost of bumper is lower. Therefore there are many efforts to reduce of car currently. The purpose of this paper is to reduce polymer used in car bumper.

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A Study on the Seller's Liability under Article 42(1) of the CISG (CISG 제42조 (1)항의 매도인의 책임에 관한 소고)

  • Heo, Kwang Uk
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.60
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    • pp.47-77
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    • 2013
  • The way for seller to procure the goods for selling is to produce the goods at his own factory and to buy the manufactured goods from the other company. In order to produce the goods for selling the seller have to obtain the resource from the domestic company or overseas. In the middle of producing the goods to sell, seller may breach the right of a third party based on intellectual property rights. That is to say, seller may use the machine that has not itself been patented and use a process which has been patented by a third party. Seller may manufacture the goods which themselves are subject to the third party industrial property rights. Nowadays it is stressed the importance of intellectual property rights such as a patent, brand, and design. These factors consist of the core elements of the competitiveness of the goods. Many embedded software have been used in the various sector. So the disputes regarding to the intellectual property rights is gradually increasing in number. Article 42 of CISG defines the seller's delivery obligations and liabilities in respect to third party intellectual property rights and claims. It contains a special rule for this similar kind of defective in title, which tries to provide an proper solution to the complex problems caused by such rights and claims in international transactions. When seller will apply this clause to the business fields, there are several points to which seller should give attention. First, Intellectual property is general terms in intangible property rights, encompassing both copyright and industrial property. Which matter fall within the scope of intellectual property? The scope of intellectual property can be inferred from the relevant international conventions, which are based on broad international consensus. Second, Article 42 of CISG governs the relationship between the seller and the buyer, that is to say, questions of who has to bear the risk of third party intellectual property rights. The existence of such intellectual property rights, the remedies available and the question of acquiring goods free of an encumbrances in good faith are outside the scope of the CISG. The governing law regarding to the abovementioned matters is needed.

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Formation and Deformation of the Fluid Mud Layer on Riverbeds under the Influence of the Hydrological Property and Organic Matter Composition (하천 수문 특성과 유기물 성상 변화에 따른 하상 유동상 퇴적물 거동 연구)

  • Trung Tin Huynh;Jin Hur;Byung Joon Lee
    • Journal of Korean Society on Water Environment
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    • v.40 no.2
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    • pp.79-88
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    • 2024
  • This study employed field measurements and biogeochemical analysis to examine the effects of seasonal conditions (e.g., temperature and precipitation) and human intervention (e.g., dam or weir construction) on the chemical composition of dissolved organic matter, flocculation kinetics of suspended particulate matter, and formation of the fluid mud layer on riverbeds. The results indicated that a water environment with a substantial amount of biopolymers offered favorable conditions for flocculation kinetics during an algal bloom period in summer; a thick fluid mud layer was found to be predominated with cohesive materials during this period. However, after high rainfall, a substantial influx of terrigenous humic substances led to enhanced stabilization of the particulate matter, thereby decreasing flocculation and deposition, and the reduced biopolymer composition served to weaken the erosion resistance of the fluid mud on the riverbed. Moreover, a high-turbulence condition disaggregated the flocs and the fluid mud layer and resuspended the suspended particulate matter in the water column. This study demonstrates the mutual relationship that exists between biogeochemistry, flocculation kinetics, and the formation of the fluid mud layer on the riverine area during different seasons and under varying hydrological conditions. These findings are expected to eventually help inform the more optimal management of water resources, which is an urgent task in the face of anthropogenic stressors and climate change.