• 펄프종이기술
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• 제31권5호
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• pp.12-17
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• 1999

This study was to evaluate applications of the alkalophilic enzymes from Coprinus cinereus 2249 with old newsprint(ONP). A enzymatic deinking process based on alkalopholic enzymes was investigated . It was found that alkalophilic enzymes could effectively deink old newsprint. When applied on deinking of the old newsprint, it increases the freeness and brightness due to effect of hydrolysis at 0.1% enzyme concentration . Also, the physical properties of deinked pulp were improved.

• 펄프종이기술
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• 제36권1호
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• pp.9-15
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• 2004

Micro inorganic solids and dissolved materials contained in the white water of linerboard process was obtained by centrifugation, and their characteristics were analyzed along with their effects on the mechanical properties of linerboard. Micro inorganic materials had little influence on tensile index and ZDT of UKP sheets. They showed rather a positive effect on mechanical properties of KOCC sheets due to adsorbed polymer. Mechanical properties of KOCC sheets decreased remarkably when the concentration of dissolved materials increased especially above 4000 ppm.

• 기술혁신학회지
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• 제5권3호
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• pp.396-411
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• 2002

This is an analysis of international mobile displays industry. There has been severe competition in market and technology. In technology, There has been competition between Japan, USA and Korea. On the other hand, there has been competition in the products market between Korea, Japan and Taiwan. Recently Korea has catched-up Japan in mid-size display industry. The response of Japanese firms are as follows: technological collaboration with Taiwanese firms in mid-size and concentration in small and large size displays. New competition, however, has started, since new technologies such as TFT-LCD and OELD have been used in products.

• 펄프종이기술
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• 제32권1호
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• pp.65-71
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• 2000

Chitosan oligosaccharide, chitosan polysaccharide and monolaurin were used to impart the antimicrobial properties onto paper for food products . Staphylococcus aureus (ATCC 25923) was used as test microorganism and shake flask test was carried out in order to examine the antimicrobial activity of each sample. Chitosan oligosaccaride showed the greatest antimicrobial effect among them and gave the promising result even at the concentration of 0.005%. Its antimicrobial power was enhanced when it is used with nomolaurin together. Chitosan oligosaccharide improved the tensile strength of antimicrobial paper.

• Journal of Applied Biological Chemistry
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• 제60권1호
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• pp.73-78
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• 2017

본 연구는 잣나무(Pinus koraiensis) 잎을 열풍건조, 음지건조, 동결건조하여 물과 80 % ethanol을 추출용매로 사용하여 추출물이 미용식품의 소재로서의 기능성을 증명하고자 실시하였다. Total phenolic compounds는 WE에서는 17.93 mg/g로 음지건조가 가장 높았고, EE에서도 20.63 mg/g로 음지건조 추출물이 가장 높은 용출량을 나타내었다. DPPH, ABTS radical 전자공여능 측정 결과, WE는 열풍건조에서 90.45, 99 %, EE에서는 음지건조가 96.2, 99 %의 높은 활성을 나타내었다. PF 측정 결과, 음지건조 잣나무 잎 추출물에서 WE는 9.63 PF, EE에서는 10.48 PF의 결과를 나타내었고, TBARs 측정 결과, 동결건조 잣나무 잎의 WE에서 82.07 %와 음지건조 잣나무 잎의 EE에서는 89.39 %의 가장 높은 높은 활성을 나타내었다. 주름개선 효과를 측정 결과, elastase 저해 활성은 동결건조 잣나무 잎 EE에서 71.46 %, collagenase 저해 활성은 음지건조 잣나무 잎의 EE에서 97.48 %로 가장 높은 저해 활성을 나타내었다. Melanin 생합성을 억제할 수 있는 tyrosinase 저해 활성은 음지건조 잣나무 잎의 EE 저해 활성이 63.03 %로 가장 높았다. 이러한 결과로 폐자원으로 여겨지는 잣나무 잎을 음지건조 하였을 때 항산화능뿐만 아니라, 주름 및 미백 활성이 특히 높은 것으로 보아 향후 잣나무 잎이 기능성 미용 소재 산업에 활용가치를 기대할 수 있었다.

• 기술혁신연구
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• 제11권1호
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• pp.79-97
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• 2003

R&D expenditure of Korean firms has been increasing drastically since 1980 and occupied 84% of total R&D expenditure in 1994. After 1994, however, the growth rate of industry R&D expenditure has dropped below single digit. R&D concentration rate of upper 20 companies declined from 61.9% in 1999 to 49.8% in 2001. The technology trade balance has diverged by 2.8 billion dollars in 2000 compared to around 0.3 billion dollars in 1985. We find several reasons on declining the industry R&D growth rate in Korea. First, we carefully say there might be an crowding out effect in increasing government R&D investment from Granger causality test between industry R&D and government R&D. Second, the decreasing benefit of tax credit since 1992 on industry R&D expenditure has caused the decrease of industry R&D growth rate. Third, the type of R&D cost becomes to similar to matured countries type of cost, which means the portion of capital expenditure has been decreased since late of 1980s. Therefore, industry R&D growth rate gets to saturation point. We draw several policy implications from the changing structure of business R&D of Korean company. Firstly, to stimulate industry R&D investment Korean government needs to strengthen tax credit policy. Secondly, to induce foreign direct investment Korean government needs to establish technology infrastructures and high quality of manpower. To utilize foreign technology resources Korean government need to introduce global R&D program executed by foreign scientist as an Project Leader.

• 한국IT서비스학회지
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• 제19권1호
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• pp.17-35
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• 2020

The Korea government has been pursuing various policies to find a new industrial growth engine based on ICT (Industry and Communication Technology). However, ICT industry recently faces a serious crisis due to a lack of fundamental competitiveness and capital and technological gap with other countries. Accordingly, it is necessary for ICT industry to recognize the rapidly changing competitive business environment and to establish appropriate value-based strategies. This paper analyses factors affecting value-based strategy in the Korean ICT industry using 10 years data set. The result shows that the value-based strategy in the Korean ICT companies has a significant influence on their financial performance. In addition, it is confirmed that the competition level in the industry has a significant moderating effect on this relationship. In addition, when the companies are categorized based on performance, it is confirmed that there is a significant difference in competition level and value-based strategy in each categories. The results of this paper are expected to suggest implications for the effective use of balanced value-based strategies in the ICT industry.

• 한국가구학회지
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• 제21권2호
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• pp.111-125
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• 2010

The furniture industry in Korea is characterized by its 42.6% of concentration in Gyeonggi Metropolitan area. When taking a look at the representative furniture complexes including Maseok, Ilsan, and Eojeong, the furniture complexes and stores were spontaneously generated at the outskirts of a city whose land cost is relatively cheap. As a consequence, they tend to be jumbled up and face to be moved or contracted forcefully owing to the new town development plan of Metropolitan areas. In contrast, Italia that is one of the advanced country in furniture industry, cultivates and develops furniture complexes in Brianza district by supporting them oriented in the metropolis Milano while hosting large-scale furniture exhibitions. Such attempts have advanced the position of the italian furniture industry into the most leading figure. In this extent, the furniture industry in Korea that is a traditional industry of Gyeonggi Province has to device a political measure and systematic measure for its cultivation as a way to secure the foundation to develop a high value-added product and foster its competitiveness. Such movements are suggested for the development of the furniture industry in Gyeonggi Province.

• 통상정보연구
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• 제7권4호
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• pp.351-365
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• 2005

Korean auto mobile industry has been contributed to development on national economy for last 30 years. Especially, The fact is that latest increasement of Korean automobile selling is worthy of notice in U.S. market which is the biggest automobile market of the world. But development of automobile industry unattainable nothing of helping of auto parts industry. So, when we discuss about growth of automobile industry, we also have to consider role of auto parts industry at the same time. The purpose of this study was to analyze exporting competition of Korean auto parts in U.S. market by using Index of Export Bias and Market Comparative Advantage Index. For attaining the purpose of study, we classified the Korean auto parts which exported to U.S. market and the world by using the six units classification of the Harmonized System(HS). Also we measured Index of Export Bias and Market Comparative Advantage Index. Analyzing period was 1998-2004. The results of Index of Export Bias indicated that HS Code No. 8708.50, 8708.91 represented over 3 numerical value and 8708.92, 8708.60, 8708.39, 8708.29 represented over 2 numerical value. Additional results indicated that the Korean auto parts which gained exporting competition in the U.S. market were HS Code No. 8708.70, 8708.93, 8708.92. The products which will have exporting competition in the U.S. market would be HS Code No. 8708.99,

• 방사선산업학회지
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• 제6권4호
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• pp.317-322
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• 2012

In this study, the preparation of a temperature-responsive poly(N-isopropylacrylamide) (PNIPAAm)-grafted surface was performed using an eco-friendly and biocompatible ion beam-induced surface graft polymerization. The surface of a perfluoroalkoxy (PFA) film was activated by ion implantation and N-isopropylacrylamide (NIPAAm) was then graft polymerized selectively onto the activated regions of the PFA surfaces. Based on the results of the peroxide concentration and grafting degree measurements, the amount of the peroxide groups formed on the implanted surface was dependant on the fluence, which affected the grafting degree. The results of the FT-IR-ATR, XPS, and SEM confirmed that the NIPAAm was successfully grafted onto the implanted PFA. Moreover, the contact angle measurement at different temperatures revealed that the surface of the PNIPAAm-grafted PFA film was temperature-responsive.