• Title/Summary/Keyword: U-Product

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How the Korean Fashion Industry is Viewed by WWD USA (미국 패션전문 일간지 WWD에 드러난 한국 패션산업에 대한 인식)

  • Lee, Yu-Ri;Medvedev, Katalin;Hunt-Hurst, Patricia;Choi, Yun-Jung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.12
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    • pp.1915-1926
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    • 2008
  • Although we know that images of a country or an industry are influential factors in product evaluation, there has been little discussion about the channels through which consumers form a country or an industry image. Guided by the assumption that the image of the Korean fashion industry conveyed through U.S. media will likely affect the evaluation of Korean fashion products, we decided to examine articles published between January 1998 and June 2008 in Woman's Wear Daily(WWD), a prestigious U.S. daily trade newspaper covering all aspects of the national and international fashion business. By using the "Korean", we found 329 relevant articles. Through content analysis, we identified the aspects of the Korean fashion industry that have been considered salient to U.S. fashion media professionals. We set up categories based on the contents of the articles that discussed segments of the supply chain of the fashion industry. We found more comments on the Korean fashion industry as fiber and fabrics supplier or apparel manufacturer than in any other categories, which reflects that South Korea has been traditionally one of the most attractive sourcing countries for the U.S. fashion business. We identified significantly less coverage on the designing, branding, marketing, and retailing aspects of the Korean fashion industry. Due to economic boom in Korea, the country's fashion industry is recognized as having a highly fashion-conscious market that can afford the world's premium brands. However, the industry is viewed as being rather vulnerable to changes in the macro economic environment.

The measurement of oxygen and metal ratio of simulated spent fuels by wet and dry chemical analysis (습식 및 건식법에 의한 모의 사용후핵연료의 O/M비 측정)

  • Choi, Ke Chon;Lee, Chang Heon;Kim, Won Ho
    • Analytical Science and Technology
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    • v.16 no.2
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    • pp.117-124
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    • 2003
  • Oxygen to metal ratio has been measured by wet and dry chemical analysis to study the properties of sintered $UO_2$ pellets and $U_3O_8$ in the lithium reduction process of spent pressurized water reactor fuels. Uranium dioxide pellets simulated for the spent PWR fuels with burnup values of 20,000~60,000 MWd/MtU were prepared by mixing $UO_2$ powder and oxides of fission product elements, pelleting the powder mixture and sintering it at $1,700^{\circ}C$ under a hydrogen atmosphere. For wet chemical analysis, the simulated spent fuels were dissolved with mixed acid (10 M HCl : 8 M $HNO_3$, 2.5 : 1, v/v) using acid digestion bomb technique. The total amount of uranium and fission products added in the simulated spent fuels were measured using inductively coupled plasma atomic emission spectrometry. Weight change of the simulated fuel during its oxydation was measured by thermogravimetry and then the O/M ratio result was compared to that obtained by wet chemical analysis. Influence of $Mo_{0.4}-Ru_{0.4}-Rh_{0.1}-Pd_{0.1}$, quaternary alloy, on the determination of O/M ratio was investigated.

A Study on the Remedy System for Breach of Contract of U.K. and U.S. in the International Commercial Transactions (국제물품거래상 계약위반의 구제제도에 관한 고찰 - 영미법을 중심으로 -)

  • Han, Nak-Hyun
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.42
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    • pp.33-66
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    • 2009
  • Common law makes a distinction between partial breach and material breach. Attempted definitions of material breach are notoriously unsatisfactory, and the concept of partial breach does not necessarily bear an inverse relationship to substantial performance. This study will review the basic structure of common law contract remedies together with how these remedies are reflected in UCC Article 2 for sale of goods contracts. The matter is complicated because availability of remedy depends on the seriousness of the breach, and the right to cure, and (for sale of goods) these in turn depend on whether the contract is an installment contract or a single performance contract. Common law jurisdictions relegate specific performance of contracts to a last place in the hierarchy of contract remedies. Common law lawyers should recognize that this is the result of historical accident and not the product of some kind of superior intellectual effort. Not only is the attitude of civil law systems toward specific performance quite different, but for international sales contracts in developing nations, a remedy system based on the notion that substitute contracts are readily available(and therefore damage remedies are appropriate) is unrealistic. English common law courts were largely restricted to remedies in the form of monetary damages. For that reason the primary contract remedy at common law has never been specific performance. Rather, common law courts have struggled to develop an appropriate measure of monetary damages for breach of contract. Today, specific performance is viewed as an equitable remedy rather than common law. In the United States the dual court system has been abolished by a merger of law and equity courts into a single court structure. However some historical distinction linger on. The most important is that jury trials are generally not available in actions that seek equitable relief. If a plaintiff seeks in personam relief, such as specific performance of a contract, the action will be viewed as equitable and there will be no entitlement to a jury. Further, equitable relief will be granted only in those situations where the plaintiff pleads and proves that the remedy at law is inadequate. The purpose of this study aims to analyze the remedy system of breach of contract of U.K. and U.S. in the international commercial transactions with criterion of commercial rationality.

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Removal of Seabed Multiples in Seismic Reflection Data using Machine Learning (머신러닝을 이용한 탄성파 반사법 자료의 해저면 겹반사 제거)

  • Nam, Ho-Soo;Lim, Bo-Sung;Kweon, Il-Ryong;Kim, Ji-Soo
    • Geophysics and Geophysical Exploration
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    • v.23 no.3
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    • pp.168-177
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    • 2020
  • Seabed multiple reflections (seabed multiples) are the main cause of misinterpretations of primary reflections in both shot gathers and stack sections. Accordingly, seabed multiples need to be suppressed throughout data processing. Conventional model-driven methods, such as prediction-error deconvolution, Radon filtering, and data-driven methods, such as the surface-related multiple elimination technique, have been used to attenuate multiple reflections. However, the vast majority of processing workflows require time-consuming steps when testing and selecting the processing parameters in addition to computational power and skilled data-processing techniques. To attenuate seabed multiples in seismic reflection data, input gathers with seabed multiples and label gathers without seabed multiples were generated via numerical modeling using the Marmousi2 velocity structure. The training data consisted of normal-moveout-corrected common midpoint gathers fed into a U-Net neural network. The well-trained model was found to effectively attenuate the seabed multiples according to the image similarity between the prediction result and the target data, and demonstrated good applicability to field data.

THE EFFECT OF FLUORIDE PRETREATMENT ON SHEAR BOND STRENGTH BETWEEN ENAMEL AND FISSURE SEALANT (불소 전처리가 법랑질과 치면열구전색재의 전단결합강도에 미치는 영향)

  • Ryu, Phil-Jun;Jang, Ki-Taek;Kim, Chong-Chul
    • Journal of the korean academy of Pediatric Dentistry
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    • v.28 no.3
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    • pp.522-529
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    • 2001
  • This study seeks to know the effect of fluoride topical application on the shear bond strength between enamel and fissure sealant. On group 1,2,3,4, Teethmate A(unfilled sealant) and on group 5,6,7,8 Ultraseal XT(filled sealant) were used. Group 1 and 5 were not pre-treated with fluoride and group 2 and 6 were pre-treated with 1.23% APF for 4minutes. Group 3 and 7 were pretreated with 2.0% NaF for 4 minutes. and group 4 and 8 were pumiced with abrasive containing fluoride for 10 seconds. Prepared specimens were acid etched for 30 seconds using 35% phosphoric acid, and then sealant was cured to the specimen using a 3mm diameter by 2mm height mold. They went through thermocycling. Its shear bond strength was measured, and then acid etched both groups that were pretreated with fluoride and that were not pretreated with fluoride. Then we examined the surface of the specimen with EM and came up with these results. In groups using unfilled sealant(group 1,2,3.4) there were no significant differences between oops pretreated with fluoride and groups not pretreated with fluoride. In groups using filled sealant(group 5,6,7,8), groups 6 and 7(treated with 1.23% APF 2.0% NaF respectively) showed significantly lower shear bond strength, compared to group 5 (not pretreated with fluoride) and group 8 (pumiced with abrasive containing fluoride) (p<0.05).

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Study of morphology on the Oxidation and the Annealing of High Burn-hp $UO_2$ Spent Fuel (고연소도 사용후 핵연료의 가열산화와 고온가열을 통한 미세조직 변화고찰)

  • Kim Dae Ho;Bang Jae Geun;Yang Yong Sik;Song Keun Woo;Lee Hyung Kwon;Kwon Hyung Moon
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.3 no.4
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    • pp.301-307
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    • 2005
  • The morphology of the high burnup $UO_2$ spent fuel, which was oxidized and annealed in a PIA (Post Irradiation Annealing) apparatus, has been observed. The high burnup fuel irradiated in Ulchin Unit 2, average rod burnup 57,000 MWd/tU, was transported to the KAERI's PIEF. The test specimen was used with about 200 mg of the spent $UO_2$ fuel fragment of the local burnup 65,000 MWd/tU. This specimen was annealed at $1400^{\circ}C$ for 4hrs after the oxidation for 3hrs to grain boundary using the PIA apparatus in a hot-cell. In order to oxidize the grain boundary, the oxidation temperature increased up to $500^{\circ}C$ and held for 3hrs in the mixed gas (60 ml He and 100 ml STD-air) atmosphere. The amount of 85Kr during the whole test process was measured to know the fission gas release behavior using the online system of a beta counter and a gamma counter. The detailed micro-structure was observed by a SEM to confirm the change of the fuel morphology after this test. As the annealing temperature increased, the fission products were observed to move to the grain surface and grain boundary of the $UO_2$ matrix. This specimen was re-structured through the reduction process, and the grain sizes were distributed from 5 to $10\;{\mu}m$.

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Analysis and Improvement of Experiments for Electrolysis of an Aqueous CuCl2 Solution in High School Science Textbooks (고등학교 과학 교과서에 제시된 염화구리(II) 수용액의 전기분해 실험의 분석 및 개선)

  • Park, Guk-Tae;Jo, Yeong-Ja;Lee, Ji-Yeong;Park, Gwang-Seo
    • Journal of the Korean Chemical Society
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    • v.50 no.4
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    • pp.328-337
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    • 2006
  • purpose of this study was to find out problems in experiments for electrolysis of an aqueous CuCl2 solution in high school science textbooks and to suggest an improved experiment considering students' capability of experimenting and laboratory safety in high schools. For this study, the experiments for electrolysis of an aqueous CuCl2 solution presented in 11 high school science textbooks were classified by their experimental methods. After high school chemistry teachers performed the experiments as presented in the high school science textbooks, an analysis was performed on problems of the experiments, and an improved experiment was devised. According to the results of this study, in the experiments for electrolysis of an aqueous CuCl2 solution using a U type tube and a U type tube with branch, reaction velocity of the electrolysis was slow, therefore, a side reaction was generated. In the experiment using a beaker, reaction of each electrode could not be observed separately. And in the experiment using an electrolysis instrument, it was difficult to identify property of the reaction product. In the improved experiment using a reaction vessel of ㅂshape, reaction velocity of the electrolysis was fast, reaction of each electrode could be observed separately, and the side reaction decreased. From these results, it was suggested that the improved experiment would help high school students understand scientific conception regarding electrolysis.

Optimization of Growth Medium Composition for Overproduction of Bacillus licheniformis Amylase in Recombinant Escherichia coli (Bacillus licheniformis amylase(BLMA)의 생산성 향상을 취한 재조합 대장균의 배지 최적화)

  • Nam, Seung-Hun;Lee, Woo-Jong;Byun, Tae-Gang;Seo, Jin-Ho;Park, Kwan-Hwa
    • Korean Journal of Food Science and Technology
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    • v.26 no.4
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    • pp.411-416
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    • 1994
  • The research is concerned with optimization of growth medium composition in an attempt to improve the product yield of Bacillus licheniformis amylase (BLMA) in recombinant E. coli containing the BLMA gene. BLMA has the catalytic activity of producing branched oligosaccharides from starch. The medium optimization was performed in flask cultures based on the Box and Wilson method. The optimized medium is composed of tryptone 18.0 g/l, yeast extract 22.4 g/l, NaCl 5.3 g/l and glucose 2.1 g/l. In a jar fermenter culture with the conventional LB medium, the recombinant E. coli yielded 1.39 g/l of final dry cell mass and 5.11 U/ml of enzyme activity. In the optimized medium, however, the final cell mass was increased to 6.01 g/l and the enzyme activity to 23.2 U/ml. Medium optimization improved cell mass by 4.3 times and enzyme activity by 4.5 times. Such an increase in enzyme activity is mainly due to an enhancement of cell mass.

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Material Characteristics of Forge Welded Bar and By-product through Reproduction Experiment to the Refining and Forge Welding Process (정련·단접 공정 재현 실험을 통해 생산된 소재 및 부산물의 재료학적 특성)

  • Oh, Min Jee;Cho, Hyun Kyung;Cho, Nam Chul;Han, Jung Uk
    • Journal of Conservation Science
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    • v.34 no.2
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    • pp.87-96
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    • 2018
  • This study analyzed the influence of folding time on the forge welded bar and hammer scale produced using the traditional refining and forge welding reproduction experiment. In the case of the forge welded bar, increasing the forging time decreased the percentage of impurities and porosity from 26.09% to 1.8%. Additionally, the hardness increased by an average of 36.88 HV. In other words, the microstructure gradually became more precise. For the hammer scale, the amount of T Fe increased with forging time. X-ray diffraction analysis revealed the presence of quartz, fayalite, $w{\ddot{u}stite$, and magnetite. The amount of quartz decreased as the forging time increased. In addition, as the forging time increased, the granular $w{\ddot{u}stite$ changed into a cohesive, long, white band. The results provide information on the characteristics of the forge welded bar and hammer scale produced in the refining and forging process. This information can be used as technical data for ancient steel making processes as well as for future technological systems.

Spectrometry Analysis of Fumes of Mixed Nuclear Fuel (U0.8Pu0.2)O2 Samples Heated up to 2,000℃ and Evaluation of Accidental Irradiation of Living Organisms by Plutonium as the Most Radiotoxic Fission Product of Mixed Nuclear Fuel

  • Kim, Dmitriy;Zhumagulova, Roza;Tazhigulova, Bibinur;Zharaspayeva, Gulzhanar;Azhiyeva, Galiya
    • Nuclear Engineering and Technology
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    • v.48 no.1
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    • pp.274-284
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    • 2016
  • Purpose: The purpose of this work is to describe the spectrometric analysis of gaseous cloud formation over reactor mixed uranium-and-plutonium (UP) fuel $(U_{0.8}Pu_{0.2})O_2$ samples heated to a temperature $>2,000^{\circ}C$, and thus forecast and evaluate radiation hazards threatening humans who cope with the consequences of any accident at a fission reactor loaded by UP mixed oxide $(U_{0.8}Pu_{0.2})O_2$, such as a mixture of 80% U and 20% Pu in weight. Materials and methods: The UP nuclear fuel samples were heated up to a temperature of over $2,000^{\circ}C$ in a suitable assembly (apparatus) at out-of-pile experiments' implementation, the experimental in-depth study of metabolism of active materials in living organisms by means of artificial irradiation of pigs by plutonium. Spectrometric measurements were carried out on the different exposed organs and tissues of pigs for the further estimation of human internal exposure by nuclear materials released from the core of a fission reactor fueled with UP mixed oxide. Results: The main results of the research described are the following: (1) following the research on the influence of mixed fuel fission products (radioactive isotopes being formed during reactor operation as a result of nuclear decay of elements included into the fuel composition) on living organisms, the authors determined the quantities of plutonium dioxide ($PuO_2$) that penetrated into blood and lay in the pulmonary region, liver, skeleton and other tissues; and (2) experiments confirmed that the output speed of plutonium out of the basic precipitation locations is very small. On the strength of the experimental evidence, the authors suggest that the biological output of plutonium can be disregarded in the process of evaluation of the internal irradiation doses.