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The Analysis of Underpotential Deposition by Multilayer Adsorption Model

  • Lee, J.B.;Duby, Paul F.
    • Journal of the Korean institute of surface engineering
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    • v.27 no.6
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    • pp.335-339
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    • 1994
  • The underpotential deposition of zinc was investigated on carbon steel and nickel. The relationship be-tween the deposition potentials and the corresponding amounts of charge for deposited layers shows a very similar trend to the multilayer adsorption mechanism. The experimental results fit a mathematical model de-rived on the basis of the BET equation for the underpotential deposition.

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Things Fall Apart? Thailand's Post-Colonial Politics

  • McCargo, Duncan
    • SUVANNABHUMI
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    • v.9 no.1
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    • pp.85-108
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    • 2017
  • This paper argues that Thailand's internal colonial model is facing severe challenges: no longer is it so possible to suppress local and regional identities, or to submerge ethnic difference in an all-embracing but potentially suffocating blanket of "Thainess." In recent decades, Thailand's diverse localities have become increasingly assertive. This is most acutely the case in the insurgency-affected southern border provinces of Pattani, Yala, and Narathiwat, but also applies in the "red' (pro-Thaksin) dominated North and Northeast. As the old ruling elite faces serious legitimacy challenges, Thailand's emerging post-colonial politics may require a radical rethinking of the relationship between center and periphery.

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STRATEGIES TO REDUCE ENVIRONMENTAL POLLUTION FROM ANIMAL MANURE: PRINCIPLES AND NUTRITIONAL MANAGEMENT - A REVIEW -

  • Paik, I.K.;Blair, Robert;Jacob, Jacqueline
    • Asian-Australasian Journal of Animal Sciences
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    • v.9 no.6
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    • pp.615-635
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    • 1996
  • The animal industry must be environmentally sound to ensure its long-term sustainable growth. Livestock wastes mostly manure, can be a valuable resource as well as a potential hazard to environment. The first option of manure management is developing an 'environmentally sound' feeding program and feeds so there are less excreted nutrients that need to be managed. Once the manure is produced it can be best utilized as a fertilizer of a soil conditioner. In many countries the amount of manure that can be spread on land depends on the nutrient requirements of the crop being grown. The laws specify maximum application rates and not animal stocking rates. Farmer who reduce the N and P component of manure can release pressure on the environment without having to reduce the number of animals. There are alternative system for housing and manure treatment which generate manure that are easier to handle and have less pollutants or more economic value. Treated animal waste may also be used as a feedstuff or fuel source. Most of the options of waste management result in increased costs to implement. It is necessary to assess the economics in order to find an acceptable compromise between the increased costs and the benefit to the environment. Animal welfare is also becoming more and more of an issue and it will lead to systems where animals are kept in less confined environment. The new system will have a great impact in the waste management system in the future.

Development of Digital Watermarking Technology to Protect Cadastral Map Information

  • Kim, Jung-Yeop;Lee, Hyun-Joon;Hong, Sung-Eon
    • Journal of Korean Society for Geospatial Information Science
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    • v.18 no.3
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    • pp.57-65
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    • 2010
  • This research aimed to prevent illegal distribution and reproduction of digital cadastral map information using digital watermarking. To this end, a digital watermarking was developed in consideration of the properties of cadastral maps and based on watermarking methods, after which its performance was evaluated. A watermark key and a one-way function was used to compensate for the algorithm and, therefore, watermarking security, based on the existing research results. In these ways, the present method meets the requirements for fidelity, robustness, false positive rate and the maintenance of consistent topology. The advanced techniques suggested in this paper were devised so as to be suitable for vector data such as GIS and navigation data as well as cadastral maps. Moreover, if the existing methodology is further improved, it could be expected to be used even more widely.

An Analysis of the Rainfall-Runoff of Natural Watershed Using the Hydraulic Routing Method (수리학적 추적 방법을 이용한 자연하천의 강우유출 해석)

  • Kwon, Hyun-Han;Moon, Young-Il
    • Journal of Korea Water Resources Association
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    • v.38 no.7 s.156
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    • pp.555-564
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    • 2005
  • In this study, a simple rainfall-runoff model was proposed by using the hydraulic routing model that requires relatively few parameters. The parameters of this model were estimated by the watershed characteristics data, and were applied to the Soyang watershed and Ui stream watershed by using the kinematic wave for overland flow and dynamic wave routing for channel routing. In order to demonstrate validity, the proposed approach was compared to the HEC-1 model for the Soyang watershed. As the results of modeling have shown, the hydraulic model shows reasonable results similar to that of the HEC-1 model. This model also represents good results for the Ui stream watershed. Hence, even if this model is a simple rainfall-runoff model using general methodology, it is competitive to the natural watershed. However, it is still difficult to estimate the roughness coefficient and the catchment width, and therefore this model is in need of such supplements.

Interior Designs of Rural American Housing and the Satisfaction Rates of Koreans Living in the Housing Units - A Case Study of Koreans Residing in Columbia, Missouri - (미국 지방 주택의 실내 인테리어와 거주 한국인의 만족도 - 미주리주 컬럼비아시에 거주하는 한국인을 중심으로 -)

  • Shin, Kyung-Joo;Jang, Sang-Ock;Rhee, Jee-Heon
    • Korean Institute of Interior Design Journal
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    • v.17 no.6
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    • pp.41-51
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    • 2008
  • The purpose of this article is to offer a guideline for residence planning for Koreans living in the United States. To achieve the goal, this article examines the Korean family's satisfaction rates of interior design and living conditions of houses in American cities, with a case study of families in Columbia, MO. A total of 105 valid samples(126 collected) out of 200 survey questionnaires distributed was acquired and processed with the statistical-aid software SPSS PC+ window version 14.0. The survey was analyzed using frequency, percentages, means, standard deviations, and multiple response analysis. The results are as follow: 1) Most of the Koreans preferred interior design and environment similar to their previous Korean residences. 2) Participants were not satisfied with partial/indirect lightings typical in the United States and desired more bright illuminating lights. 3) Participants kept their habit of taking off shoes indoors while living in the United States, therefore when designing a house for Koreans living in the U.S., designers should take this into account when designing for Korean residents. 4) Among the American interior elements, storage such as walk-in closets and bathroom cabinets were highly demanded by Koreans, thus possibly to be adopted to Korean houses. Researchers expect the results of this study would contribute to supplying comfortable and convenient living environments to those Koreans living in the United States.

Effect of Activation Method and Culture Medium on the Development of Porcine Nuclear Transfer Embryo using Fetal Fibroblast

  • Im, Gi-Sun;Yang, Byoung-Chul;Park, Jin-Ki;Kim, Hyun-Ju;Chang, Won-Kyung;R. S. Prather;B. N. Day
    • Proceedings of the KSAR Conference
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    • 2001.03a
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    • pp.66-66
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    • 2001
  • Since the first birth of pig derived from embryonic cells by nuclear transfer, many researches to produce cloned pig have been carried out. Recently, two reports about the birth of somatic cell cloned pigs using in vivo oocytes and also Betthauser et al. (2000) reported the birth of somatic cell cloned pigs using in vitro oocytes. So here we investigated the effect of activation method and culture medium on in vitro development of porcine nuclear transfer embryo using fetal fibroblast. Oocytes derived from slaughter house obtained ovaries were matured for 42 to 44 h in TCM 199. Matured oocytes were denuded using 0.1% hyaluronidase and then Oocytes with the first polar body were used for enucleation by aspirating the first polar body and adjacent cytoplasm in TCM 199 supplemented with 7.5 $\mu\textrm{g}$ cytochalasin B. Petal fibroblast cells were prepared from 35 days old fetus. To be used as donor cells, fetal fibroblast cells were serum starved for 3 to 5 days and then isolated into single co:1 by trypsinization. Nuclear transfer embryos were fused using 2 times 1.25㎸ for 30$mutextrm{s}$. Fused NT embryos were activated with calcium ionophore (CI) and 6-dimethyl-aminopurine (6-DMAP). Activated oocytes were cultured in NCSU 23 or BECM 3 for 6 days. There was no significant difference between chemical activation and no chemical activation for blastocyst development rate(11.6 vs. 14.8%). However, cell number was significantly higher when NT embryos were activated with CI and 6-DMAP (31.2 vs. 22.6). When NT embryos were cultured in NCSU 23 or BECM 3, blastocyst development rate was 16.4 and 13.2%, respectively, and cell number was 31.5 and 24.1, respectively. These results suggest that chemical activation after fusion and culture in NCSU 23 could increase cell number of porcine NT embryos.

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Using Enzyme Supplemented, Reduced Protein Diets to Decrease Nitrogen and Phosphorus Excretion of Broilers

  • Jacob, Jacqueline P.;Ibrahim, Sami;Blair, Robert;Namkung, Hwan;Paik, In Kee
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.11
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    • pp.1561-1567
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    • 2000
  • An experiment was conducted to investigate the effect of dietary protein levels and supplementation of phytase and pentosanase in wheat-soybean meal diet on the performance and output of N and P in broilers. Addition of phytase alone or in combination with pentosanase to reduced or control protein diets did not affect average final body weight of mixed sexes. However, addition of phytase and pentosanase in combination to reduced protein diets in male broilers significantly depressed body weights. Intestinal viscosity of 21d broilers was significantly decreased by addition of phytase and pentosanase alone or in combination. Tibia ash content was significantly increased by phytase supplementation. Supplementation of phytase alone and in combination with pentosanase to reduced protein diets significantly decreased P in manure and daily output of P. Daily N output was lowest in the reduced protein diet supplemented with phytase and pentosanase combination. The retention of DM, N and P was highest in the reduced protein diet supplemented with phytase and pentosanase combination. In conclusion, supplementation of phytase alone or in combination with pentosanase to reduced protein diets can decrease output of N and P. But the combination of the enzymes has no beneficial effects on the performance of broilers, especially those on wheat-soybean meal diet with reduced protein level.

A Study on the Archival Graduate Programs in the Schools of Library and Information Science in English-Speaking Canada (캐나다의 기록학 대학원 교육프로그램에 관한 연구)

  • 정연경
    • Journal of Korean Library and Information Science Society
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    • v.33 no.4
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    • pp.37-59
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    • 2002
  • The purpose of this study is to identify useful factors for the curriculum development of the archival program in Korea by analyzing archival graduate programs of the Schools of Library and Information Science in English-speaking Canada. Name and history of the schools, degrees, credits, required and elective courses, practice, research, md faculty of archival prgrams, and the official guidelines of ACA and SAA are compared by analyzing web sites and literature review. It is found that Canadian LIS schools offer independent archival programs with a separate MAS degree or a specialization. University of British Columbia, the first LIS school that has a separate MAS degree program, provides a systematically developed curriculum. It also reveals that Canadian archival programs are based on their own principle·md SAA guidelines because ACA guidelines are out of date. Based upon the analysis of the archival programs in Canada, the current situations of the archival graduate programs in Korea are compared and several suggestions ale made f3r the direction of successful archival education in Korea in the end.

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