• Korean Journal of Fisheries and Aquatic Sciences
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• v.27 no.5
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• pp.501-508
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• 1994

This study was undertaken to get basic data for the cold-waterless transportation of live fish. The optimal cold temperature of plaice, Paralichthy olivaceus was determined by checking the changes of dissolved oxygen and ammonia in the sea water and the survival times during storage at various temperatures. After determination of optimal temperature for transportation, the changes of serum components and muscle components of live plaice were also carried out during storage at cold($5^{\circ}C$)-waterless conditions and the recovery conditions($10\%$ density at $15^{\circ}C$). At higher storage temperature, decreases in dissolved oxygen and the increases in ammonia in seawater were observed. In addition, the survival time was short at low temperature($0^{\circ}C\;and\;3^{\circ}C$). Almost all of the serum components(hemoglobin, glucose, LDH, GOT and GPT) of live plaice gradually increased during storage in cold-waterless conditions, and then those values decreased to the initial levels after $3{\sim}10hrs$ storage in conditions of recovery. The concentration of ATP in the muscle steadily decreased during storage in cold-waterless conditions. The contents of ADP and IMP seemed to be directly related to the extent of ATP breakdown. ADP and IMP thus showed a gradual increase during storage. The level of lactate in the muscles gradually increased during these storage times, also. On the other hand, the levels of those components in the muscle entirely recovered to their original levels within $3{\sim}6hrs$ storage after they were returned to conditions of recovery. The ratio of ATP to the ATP and its related compounds${ATP/(ATP+ADP+AMP+IMP){\times}100}$ in the muscle showed $45\%$ after 18hrs storage in cold-waterless conditions. Otherwise, ratios returned to their original levels within $3{\sim}6hrs$ of storage in recovery conditions.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.4 no.1
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• pp.1-27
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• 2009

The bio-technology industry is a technology-intensive high value added area where R&D and securing core technology are important. Many countries across the world are nationally supporting and nurturing this industry as a next generation growth engine. This study aims to introduce development plan for the bio-tech industry in Korea through analyzing factors for the development of bio-tech industry by using Analytic Hierarchy Process (AHP) and to set the priorities among such factors. The analysis shows that key element for the development of bio-tech industry is technological capacity in the present and in the year of 2015. It also shows that it is essential to have government support and investment in strengthening R&D and cooperative system of industry, academia and research institute for the development of basic original technology. In addition, it suggested 5 plans for the development of bio-tech industry in Korea including securing new technologies in bio-tech industry, improving efficiency of R&D management system, protecting and culturing traditional bio-tech industry, creating emerging markets and efficiently providing support to nurture bio-venture companies.

• Journal of Radiation Industry
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• v.7 no.1
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• pp.37-43
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• 2013

We examined the forage quality to provide the basic information for the utilization of blackberry by-products (leaf and stem) among thirty-five mutant lines derived from gamma-ray. The leaves had higher crude protein (CP) contents than stems. In addition, the leaves showed broad ranges of variation in crude fat, crude fiber and crude ash. The overall forage quality of the stems were similar to those of the original variety. The mean of neutral detergent fiber (NDF) content of leaves and stems in mutant lines were 25.88% and 58.98%, respectively. Also, the mean of acid detergent fiber (ADF) content of leaves and stems in mutant lines were 15.43% and 49.27%, respectively. Forage quality grades of all blackberry leaf were special quality class. However, the blackberry stem ranked $1^{st}$ to $5^{th}$ in quality class. The stem diameter was negatively ($P{\leq}0.05$) correlated with the moisture and crude protein. Also, the fruit length was highly negatively ($P{\leq}0.01$) correlated with the RFV (relative feed value) in blackberry leaf. The one hundred fruit weight was highly negatively ($P{\leq}0.01$) correlated with the crude ash. Based on these results, the by-products of blackberry could provide high quality forage for feeding of live stock.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.28 no.2
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• pp.69-73
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• 2018

Crystal growth of ${\alpha}-Fe_2O_3$ nanosized particles of 80~90 nm in size, which were hydrothermally prepared from 0.03 M $FeCl_3$ solution at $100^{\circ}C$, was investigated in Pb-containing and Pb-free frit. By heating ${\alpha}-Fe_2O_3$ nanosized particles in two frits at $800^{\circ}C$, the average diameter of particles in frits was increased to 200~210 nm and 150~160 nm, respectively, and the crystal growth due to the aggregation and sintering of several ${\alpha}-Fe_2O_3$ particles was observed. Formation ratios of larger particles over 100 nm in diameter were 54 % in Pb-free frit and 85 % in Pb-containing frit. After heating ${\alpha}-Fe_2O_3$ particles in frits at $800^{\circ}C$, 7~9 nm in average diameter of pores were formed in particles. Theses pores were derived from the porous structure of original ${\alpha}-Fe_2O_3$ particles and confined in particles during sintering.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.1
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• pp.159-170
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• 2021

As the main purpose of R&D changes from the center of knowledge creation to the center of economic value creation through technology transfer and commercialization, public technologies can also secure economic feasibility as well as make a social contribution. Korea has been focusing on fostering core human resources who can lead the commercialization of basic and original research results by launching the 'Support project for exploring startups linked with public technology-based markets' since 2015 in order to promote public technology startup. This study is based on the results of a survey for the purpose of analyzing the performance of this project. In addition, this study derived four factors related to the I-corps project performance from the results of this survey and verified the relationship between these factors through structural equation model analysis. In summary, it was confirmed that 'Application Level' and 'Business Model,' which are positively affected directly from 'Entrepreneurship Learning,' have positive effects on 'Financial Resources'. Furthermore, the indirect effect of 'Entrepreneurship Learning' on 'Financial Resources' was verified. In particular, the high level of impact of 'Entrepreneurship Learning' on 'Application Level,' and the impact of 'Application Level' on 'Business Model' and 'Financial Resources' were also positive.

• Journal of Korea Water Resources Association
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• v.44 no.9
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• pp.753-763
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• 2011

Allocated water storage of dam at the planning and design stage does not seem to be maintained well at the operation stage because of unexpected critical reasons. A dam is likely to be subject to negative effects caused by changes of dam operation conditions and it is hardly avoidable. Therefore, it must be timely improved to recover its original functions and looked for better alternatives to keep its original roles. Specifically the improper management of river condition degrades flood control capability in a dam and river eco-system. The dam downstream river improvement work is needed for normalizing dam functions and its valuations. This study focuses on estimating water use benefits from recovering its own effective storage buffer restricted for flood control. As the results, the water supply and the hydropower benefits in Imha, Daechung and Youngdam Dam are recovered totally by 19.9 million $m^3$/year and 20.8 GWh/year respectively. Also those results are used for the basic information of the economic analysis in the dam downstream river improvement work.

• Korean Chemical Engineering Research
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• v.50 no.5
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• pp.885-889
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• 2012

In this study, amine and metal oxide additives were investigated to improve $CO_2$ adsorption capacity of activated carbons (ACs). The characteristics of surface modified ACs were studied by X-ray photoelectron spectroscopy (XPS), $N_2$ adsorption, X-ray diffraction (XRD), and BET. Amine surface treatment decreased specific surface area and pore volume of ACs, but increased alkalinity by the incorporated nitrogen functional groups. Adsorption capacities of amine functionalized ACs was larger than original ACs, because basic group which can react with $CO_2$ was grafted on the ACs surface. Presence of copper oxides on ACs also enhances the carbon dioxide adsorption. The copper oxides could increase the adsorption rate of carbon dioxides due to the acid-base interaction (or electron acceptor-donor interaction). It was found that copper oxide loading was a promising method to improve the $CO_2$ adsorption capacity of ACs.

• Membrane Journal
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• v.18 no.2
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• pp.109-115
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• 2008

To remove total dissolved solid (TDS) from wastewater, a carbon membrane system was prepared, using carbon membranes made from conductive activated carbon and poly(vinylidene fluoride) (PVDF). Using 100 ppm aqueous solutions of NaCl, $Na_2SO_4,\;MgCl_2,\;MgSO_4$, the basic properties of the carbon membranes used were studied. For the treatment of the real dye wastewater supplied from Kyungin Corp., a pilot scale carbon membrane system was also prepared, which was consisted of 240 plies of carbon membranes of $20cm{\times}20cm$ (length${\times}$width). Using the real wastewater with different TDS such as 941, 2050, 2810, 3830, 4960, 6030 ppm, prepared by the dilution of the original wastewater with pure water, the performance of the pilot scale carbon membrane system was studied. The effect of the operational conditions was studied.

• Journal of Korean Medical classics
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• v.30 no.2
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• pp.59-81
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• 2017

Objectives : This paper studies the pulse diagnosis as found in Youksimanpil, which is a series of medical charts containing 150 diagnosis records of Yi Suki, a doctor who was active in Joseon during the 17-18th centuries. Through this effort, the paper aims to shed light on how pulse was utilized in the Korean medicine, and in process tries to reveal the essence of Korean medicine's treatment method. Methods : 60 charts where pulse method was used are selected in Youksimanpil and a table is created with them. Figures are drawn to explain four steps of pulse-sensing from the simple method to highly advanced method. Charts are presented with the corresponding original texts and their translations. With these efforts, the paper attempts to reveal the broad understanding of the doctor of Joseon period who consistently kept to the most basic principle of pulse diagnosis. Results : The efficiency of pulse diagnosis depends on the unity and simplicity in diagnosis and prescription. There were continued efforts between the doctors in Joseon to collect and compare the experiences they gained from clinical practices in order to organize their findings and form a system. These are: (1) individual pulse, (2) patternized pulse, (3) balance between left and right pulses, (4) balance between pulse and body, and (5) the doctor's extemporaneous diagnosis. In that efforts, they protect the principle of holistic diagnosis, which is one of Korean medicine's core principles. Conclusions : Thanks to the existence of medical charts that presents in detail how the texts of Donguibogam were applied in real clinical practices, today we can see Korean medicine's highly advanced synergy between textual knowledge and clinical experiences as recorded in the form of charts.

• The Journal of the Korea Contents Association
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• v.18 no.9
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• pp.535-543
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• 2018

The traditional culture, which is a historical product possessed by each country, represents the competitiveness of the country and becomes a national resource. Raw lacquer has a very long history and tradition in China. Lacquer, which is the basic material of Raw lacquer. Also it is a natural paint which has the functions of preservation, insectproof and waterproof used from ancient times in Asia, not only in China but also in Korea and Japan. Such Raw lacquer using lacquer has a long history and it is becomes to a tradition. On the other hand, Its value and meaning are being faded by oilpaintings and watercolors. Much effort and research are needed to become more popular. I would like to introduce the lacquering technique in illustration as one way. There are a lots of expression techniques in the present illustration, but lacquer expression is rarely seen. In the illustration, lacquering technique is a modern reinterpretation of traditional culture by combining modern technology with traditional culture. In this paper, a Raw lacquer with a long tradition of soul is informed to the public and it is a way to bring attention to the beauty of lacquer and reproduce the original expression technique as an illustration to enhance the understanding of traditional culture, I hope that Raw lacquer will be used in the field.