• Title/Summary/Keyword: specific deposit

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The Effect of Current on Characteristics of Stellite 12 Alloy Overlayer by PTA Process (PTA법에 의한 스텔라이트 12 합금 육성층의 특성에 미치는 전류의 영향)

  • Jung, B.H.;Kim, M.K.;Ahan, Y.S.;Kim, M.Y.;Lee, S.Y.
    • Journal of Power System Engineering
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    • v.5 no.3
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    • pp.88-94
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    • 2001
  • Stellite 12 alloy-powders were overlaid on 410 stainless steel valve seat using plasma transferred arc(PTA) process. Variation of the microstructure, hardness, wear and corrosion of overlaid deposit with current change was investigated. The deposit showed hypoeutectic microstructure, which was consisted of primary cobalt dendrite and networked $M_7C_3$ type eutectic carbides. As current increased, the amount of eutectic carbide decreased and its dendritic secondary arm spacing increased. Hardness of the deposit was decreased with increase of current. Stress relief heat treatment at $600^{\circ}C$ for two hours resulted in slight increase of hardness in the deposit and showed uniform hardness distribution in base metal without any hardened layer in HAZ. Specific wear decreased with increase of sliding distance. The deposit of high hardness with a lot of eutectic carbide showed relatively low specific wear. Initial corrosion current density of the deposit in 0.1N sulfuric acid was lower than those of 410 stainless steel, and showed a little variation with PTA current.

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The adaptive filter configuration for down stream of Naktong river (낙동강 하류원수에 적합한 여과지의 여재구성)

  • 김상구;류동춘
    • Journal of Environmental Science International
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    • v.4 no.5
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    • pp.481-488
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    • 1995
  • This study was carried out to evaluate the variations of headloss rate and of specific deposit to depths with effective size of media and configuration of filter layer during algae blooming period. 0.51mm size media was disqualified because most of headloss occurred rapidly below 5cm from surface layer however 0.91mm size media acted deep filtration more than 20cm from top, as result 0.91mm sixte media filter had 2~3 times longer filtration time than 0.51mm sixte media filter, but 0.91mm size media have break-through potentiality. multi-layer filter with 1.02mm anthracite and 0.51mm sand had large deposit volume in upper layer that could longer filtration time, moreover smaller media in lower layer that could protect break-through.

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Macroeconomic and Bank-Specific Variables and the Liquidity of Jordanian Commercial Banks

  • AL-QUDAH, Ali Mustafa
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.12
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    • pp.85-93
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    • 2020
  • This study aimed to explore the impact of macroeconomic (Real GDP growth (GDPG), Inflation rate (INF)) and bank -specific variables (profitability (ROA), capital adequacy (CADEQ), non-performing loans (NPL), deposit growth (DEPG)) on the liquidity (lIQ) of 13 listed Jordanian commercial banks for the period 2011-2018. Panel data analysis, Pooled least square, fixed effects model and random effects model, Lagrange multiplier test, and Hausman test were used. The random effects model output shows that, macroeconomic variables have a significant impact on Jordanian commercial banks liquidity since inflation has a positive impact while GDPG has a negative impact on banks (LIQ). On the other hand among the bank-specific variables capital adequacy and deposit growth have a positive significant impact on banks (LIQ), while (NPL) and (SIZE) have a negative significant impact on Jordanian commercial banks liquidity. But ROA has a negative insignificant impact on (LIQ). The findings of the study suggest that commercial banks departments need to pay attention to the economic and internal variables of banks in order to maintain acceptable levels of liquidity.

Suggesting the Reasonable Legal Deposit Operating Plan through Analyzing the Legal Deposit Process of National Libraries of the World (국내외 국가도서관 납본절차 분석을 통한 납본업무의 합리적 운영방안 도출)

  • Noh, Young-Hee
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.20 no.4
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    • pp.173-189
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    • 2009
  • All publications of a country is a cultural heritage with the spirit of humanity, each National Library has to collect and preserve all publications produced in each country. Acquisition activity(Collection development) of each National Library is supported by a powerful legal deposit system. Therefore, this study has analyzed the legal deposit systems of the world countries, especially focussed whether or not the compensation for legal deposit, whether or not any sanction against not-depositing, Fine collection procedures against not-depositing, and the specific process for legal deposit. Based on these investigations, this study was to seek ways to contribute the legal deposit rates of National Library. It has proposed the following suggestions; Performing of legal deposit duty by itself, developing the system for supporting the legal deposit, establishing newly of legal deposit department, and improving the compensation for the legal depositor.

The adaptive filter configuration for down stream of Naktong river (낙동강 하류원수에 적합한 여과지의 여재구성)

  • Kim, Sang-goo;Ryou, Dong-choon;Lee, Yung-sik;Son, Jin-eun
    • Journal of Environmental Science International
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    • v.4 no.5
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    • pp.95-95
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    • 1995
  • This study was carried out to evaluate the variations of headloss rate and of specific deposit to depths with effective size of media and configuration of filter layer during algae blooming period. 0.51mm size media was disqualified because most of headloss occurred rapidly below 5cm from surface layer however 0.91mm size media acted deep filtration more than 20cm from top, as result 0.91mm sixte media filter had 2∼3 times longer filtration time than 0.51mm sixte media filter, but 0.91mm size media have break-through potentiality. multi-layer filter with 1.02mm anthracite and 0.51mm sand had large deposit volume in upper layer that could longer filtration time, moreover smaller media in lower layer that could protect break-through.

A Study of the Electroless Ni-W-B Depsition on Alumina Ceramics (Alumina Ceramics상의 무전해 Ni-W-B 도금에 관한 연구)

  • 유능희;강성군
    • Journal of the Korean institute of surface engineering
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    • v.22 no.4
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    • pp.161-167
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    • 1989
  • Effects of bath composition on electroless deposition of Ni-W-B from sulphate solution were invesrigated in terms of deposition kinetics, electro resistivity and composition of deposit film. The microstruigated and crystataine structure of the films were also studied using a scanning electron microscope and X-ray diffractometer. The deposition rate increased linearly with increasing the concentration of nickel sulphate in bath solution, wheras the rate decreasing with sodium citrate. The rate was also affected by sodium tungstate, which was maaximum at the concentration of 0.06 M/1 in sodium tungstate, The content of W in the deposit increased with increased with increasing the sodium citrate had on opposite effect on the composition of W and B in the deposit. The crystal change film from armorphous to cryatallicne nature by heat treatments was proved by the reduction of specific resistance and X-ray diffration.

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Experimental Investigation and Modeling of the Specific Enthalpy Distribution in a Spray Cone

  • Ellendt, N.;Uhlenwinkel, V.
    • Proceedings of the Korean Powder Metallurgy Institute Conference
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    • 2006.09a
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    • pp.58-59
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    • 2006
  • In Spray Forming, specific enthalpy is a key parameter in the deposition process as it influences the thermal condition of the impinging droplets as well as that of the deposit surface. An empirical model for the distribution of specific enthalpy in the spray cone was developed as an easy to handle alternative to numerical models with which the descriptive partial differential equations are solved numerically. The model results were compared with the experimental data to validate its applicability.

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A Study on Improving Methods of Legal Deposit and Compensation of Books in Korea (도서의 납본과 보상제도 개선방안에 대한 고찰)

  • Kim, Na-Young;Oh, Il-Seok
    • Journal of the Korean Society for Library and Information Science
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    • v.50 no.3
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    • pp.513-532
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    • 2016
  • Legal deposit is a system that a person who publishes in the country a work shall deposit a certain copies of publications in designated libraries or institutions in order to preserve and transfer national knowledge and culture heritage. Under "Libraries Act" and "National Assembly Library Act", depositors shall present books to the Library and the Library shall properly compensate him/her for such copies presented. This study focuses on presentation and proper compensation of books. This study has reviewed laws and regulations about them in major countries and our country, and analyzed the current status and some problems of our country. This study has analyzed the constitutionality of legal deposit, the refusal of copies presented, and the meaning of proper compensation through analyzing cases on legal deposit. Based on these analyses, it has proposed the modification of regulations on presentation and proper compensation of books, the establishment of specific rules on proper compensation, and the penalties on unfair presentation.

A Practical App개ach of Stress Path Method for Rational Settlement Estimation of Saturated Clay Deposit : Part I (Evaluation and Use of Characteristic Deformation Behaviors) (포화 점성토지반 침하량의 합리적 평가를 위한 실용적인 응력경로법 적용방법 : Part I (특성변형거동의 평가와 활용))

  • Kim Chang-Youb;Chung Choong-Ki
    • Journal of the Korean Geotechnical Society
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    • v.21 no.4
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    • pp.83-98
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    • 2005
  • In this paper, a conceptual approach of the stress path method was newly proposed for a rational estimation of settlements of saturated clay deposits. In the proposed approach, settlement-related characteristic deformation behaviors of a specific clay deposit, which can cover all probable stress changes expected in the field, are experimentally evaluated in advance. Then settlements of various structures constructed on the deposit are easily estimated with only the characteristic deformation behaviors and without any additional experimental effort. In Part I of this paper, in order to provide practicality to the new conceptual approach, we developed a detailed procedure which is capable of evaluating characteristic deformation behaviors of a saturated clay deposit with only a limited number of tests and easily predicting deformations under a given stress change using the characteristic deformation behaviors. The applicability of the developed procedure was clearly shown by presenting an actual application example.

The Improvements of Preferred Right on the Housing Lease Protection Act (주택임대차보호법상 최우선변제권에 대한 개선방안)

  • Park, Jong-Ryeol;Joung, Soon-Hyoung
    • Journal of the Korea Society of Computer and Information
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    • v.17 no.8
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    • pp.135-144
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    • 2012
  • The Preferred Right that recognized in Housing Lease Protection Act Article 8 Paragraph 1 is a legal security right. The case of a small tenant whose security deposit is less than a specific sum of money to lease housing, he can get preferential payment about his a specific sum of money of security deposit in an auction procedure. Like this the Preferred Right can protect the homeless commoner also it ignores the existing legal system. But the Preferred Right has the right function that contribute to stability of homeless people's housing, on the other hand, it has the adverse function that damages to several interested parties in an auction procedure by using legal preferential protection. So, about these problems, the improvement way will propose in this study.