• Journal of the Korean Society of Food Science and Nutrition
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• v.28 no.2
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• pp.403-408
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• 1999

This study was conducted to investigate chemical properties, quality stability and utilization of approved sardine surimi(ASS) which is developed our laboratory. The product yield of the ASS was about 3 times higher than that of usual sardine surimi(SS). The proper addition concentration of sodium bicarbonate was 0.1% for the neutralization of the ASS. The content of salt soluble protein nitrogen in the ASS was about the half of that in the SS, while the content of water soluble protein nitrogen was 2.4 times higher in ASS. The total amount of free amino acids in the ASS was about 11 times higher than that of the SS. Predominant free amino acids in the ASS were histidine, taurine, glutamic acid and alanine, and those four amino acids occupied 94% of total amount of free amino acids. During cold storage at 21oC for 6 months, the quality of ASS was more stable than that of SS in judging from changes of water soluble and salt soluble protein nitrogen, AV and POV. Quality of fish burger, fish sausage and fried fish paste processed in accordance with commercial processing preparation using the ASS or SS exclusively and mixtures which other white meat fish surimi(alaska pollack, hair tail and sole) were proportionallly added to each of two types of sardine meat were evaluated. In case of fish burger, the product processed from the ASS only were superior.

• Journal of the Korean Home Economics Association
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• v.26 no.3
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• pp.79-91
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• 1988

The present survey was designed to find out the utilization status of korean traditional cookies and the evaluation degrees of their commercial products' quality subjects. The subjects were housewives randomly selected who lived in Seoul, Deajeon, Youngju city (Kyoung Buk Province area), and Sechon khun (Chung Nam province area). We performed this survey from November 16 to 28, 1987 by questionnaire method. The results obtained can be summarized as follows; 1) In the subjects' home, 25 kinds of Korean traditional cookies were used. All of them Youmilkwa and Kangjeong type were used more frequently than the other types and Jeonkwa, Dasik, and Suksilkwa were used scarcely. 2) Korean traditional cookies which were showed more than 20% of utilization ratio were follows; Yackwa (74.4%), Sanja (26.8%), Taraekwa (22.6%), Seban-kangjeong (21.7%). 3) On New Year's day, Korean traditional cookies were used more frequently than harvest festival day but their utilization ratio of western cookies was follows; New Year's day was 10%, and harvest festival day was 6.2%. 5) On ceremonial day, Youmilkwa and kangjeong type were used more frequently than jeonkwa, Dasik, and Suksilkwa type. 6) All of ceremonial days, korean traditional cookies were used most frequently on the 60th birth day and their utilization ratio was extremely low on the 100th day after birth, 1st birth day, and funeral day. 7) Generally western cookies were used more frequently than Korean traditional cookies on the birth day of children and adults. 8) Convinience (64.8%) was the most favored cause purchasing the commercial products but many subjects (37.0%) wanted to make the Korean traditional cookies at home. 9) All the quality properties of commercial products, taste, package, and storage property were favored but price and hygienic property were poorly evaluated by subjects. The evaluation about taste and package property of commercial products was affected by academic career (p<0.05), and shelf life was affected by age (P<0.01) significantly. And hygienic property was significantly affected by age and academic career respectively. (P<0.01).

• KIEAE Journal
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• v.1 no.1
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• pp.17-26
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• 2001

The purpose of this study is to develop an underground Building. Population tends to concentrate in large cities. In result, the cities lacks housings. Underground space may be a attractive space by being able to gain alternative energy and get a cheap site, protect environment at the same time. The earth or ground is a useful medium for a long-term heat source and storage of it's heat. Also the underground space has the status of stabilization, the lower heating load and the similar heat transfer coefficient of the inside wall surface comparing to that of residential space. Utilization of underground space has many advantages to cope with lack of building sites and energy conservation, etc. As a result, it is expected to provide a useful information for the practical use of Underground building.

• Solar Energy
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• v.15 no.3
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• pp.3-14
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• 1995

The Direct Contact heat Exchanger(DCHX) has been widely studied in the chemical industry for many years due to its inherent simplicity as a counter-current divice for heat and mass transfer. In many solar systems, the DCHX unit can be combined with the thermal storage unit, or alternatively, it can be used separately from the storage unit, much like an external(to storage) closed heat exchanger system. In the present work, the spray column type of direct contact heat exchangers are studied extensively to harness the solar energy for hot water and spaced heating. Some of the major considerations that are involved in the design of heat exchangers in this study are that : working fluid is a hydrocaabon(such as Texaterm) or water which is either lighter or heavier than storage medium. The experimental data have revealed some interesting characteristics concerning the application of DCHXs for solar energy utilization. These experiments are carried out in the line of solar heating system, major results are as follows : 1) the flow and aspect of working fluid drop for maxium heat transfer 2) efficiency and volumetric heat transfer coefficient of D.C.H.X with a heavier working fluid are higher than those of D.C.H.X with a lighter working fluid.

• Economic and Environmental Geology
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• v.53 no.4
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• pp.491-504
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• 2020

Given the continued climate change and global warming, various technologies for greenhouse gas reduction were discussed worldwide as all 195 countries participated in the Paris Agreement on the reduction of greenhouse gases. The agreement was adopted at the 21st Conference of Parties to the UNFCCC (COP21), which was held in Paris, France, in December 2015, and it revealed that reducing CO₂ is the most efficient method of greenhouse gas reduction. Accordingly, carbon capture/utilization/storage (CCUS) technology has been noted as a means of making practical contributions to CO₂ reduction, and research and development (R&D) activities in many countries are active in the field of CCUS technology. Therefore, this study aims to provide a basis for CCUS R&D and strategic support measures by analyzing patent trends in technologies related to CCUS. The patent analysis collected a total of 10,137 patents in the United States, Korea, Japan, Europe, and China; the number of patents in the United States was the highest according to patent analysis by country. According to an analysis by technology, capture-related technology was high at 60%, but given the recent increase in technology related to utilization, technology demonstration, R&D, and policy support should be continued.

• Journal of Digital Convergence
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• v.17 no.2
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• pp.101-111
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• 2019

The construction of a "cold-chain cluster," which is a complex of cold-storage warehouses is emerging as an issue in the logistics industry. The Incheon Port Authority, in partnership with Korea Gas Corporation, is carrying out a project to build a cold-storage cluster using cold energy generated in the Songdo LNG receiving terminal. This study proposes a method of activating the cold-storage cluster using the CFPR methodology. An analysis of major factors showed that the most important factor was stability and profitability, which scored 0.281. For sub-factors, sustainable trade volume was the highest in importance, followed by rent level, the sustainability of LNG cold energy utilization technology, competition with general cold-storage warehouses, and exclusion of duplicate investments in facilities. For the future study, the evaluation of complex of cold-storage warehouses using major factors drawn out from this study is needed.

• Journal of Multimedia Information System
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• v.4 no.1
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• pp.19-26
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• 2017

The compression of video for both full HD and UHD requires the inclusion of extra vertical lines to every video frame, named as the DTV essential hidden area (DEHA), for the effective functioning of the MPEG-2/4/H encoder, stream, and decoder. However, while the encoding/decoding process is dependent on the DEHA, the DEHA is conventionally viewed as a redundancy in terms of channel utilization or storage efficiency. This paper proposes a block mode DEHA method to more effectively utilize the DEHA. Partitioning video block images and then evenly filling the representative DEHA macroblocks with the average DC coefficient of the active video macroblock can minimize the amount of DEHA data entering the compressed video stream. Theoretically, this process results in smaller DEHA data entering the video stream. Experimental testing of the proposed block mode DEHA method revealed a slight improvement in the quality of the active video. Outside of this technological improvement to video quality, the attractiveness of the proposed DEHA method is also heightened by the ease that it can be implemented with existing video encoders.

• Korean Chemical Engineering Research
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• v.57 no.4
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• pp.539-546
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• 2019

Global warming has mentioned as one of the international problems and these researches have conducted. Carbon Capture, Utilization and Storage (CCUS) technology has improved due to increasing importance of reducing emission of carbon dioxide. Among of various CCUS technologies, mineral carbonation can converted $CO_2$ into high-cost materials with low energy. Existing researches has been used ions extracted solid wastes for mineral carbonation but the procedure is complicated. However, the procedure using seawater is simple because it contained high concentration of metal cation. This research is a basic study using seawater-based wastewater for mineral carbonation. 3 M Monoethanolamine (MEA) was used as $CO_2$ absorbent. Making various concentrations of seawater solution, simulated seawater powder was used. Precipitated metal carbonate salts were produced by mixing seawater solutions and $rich-CO_2$ absorbent solution. They were analyzed by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Thermogravimetric Analysis (TGA) and studied characteristic of producing precipitated metal carbonate and possibility of reusing absorbent.

• Food Science and Biotechnology
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• v.15 no.4
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• pp.543-548
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• 2006

The effects of food grade fructooligosaccharide (FOS), isomaltooligosaccharide (MOS), galactooligosaccharide (GOS), and inulin on the growth of five strains of bifidobacteria in fermented milk were investigated. Their effect on culture viability during refrigerated storage was also determined. FOS showed the highest growth-promoting activity for all bifidobacteria except for Bifidobacterium bifidum. Growth rates of B. adolescentis, B. breve, and B. infantis were stimulated by oligosaccharides and inulin, whereas B. longum growth was stimulated by the oligosaccharides but not inulin. In contrast, growth of B. bifidum was enhanced only by inulin. Both acetic and lactic acid production by Bifidobacterium spp. was also enhanced in the presence of 5.0% oligosaccharides. The viability of bifidobacteria cultured with oligosaccharides and inulin, particularly with FOS, was significantly higher than control cultures after 4 weeks of refrigerated storage. The utilization of oligosaccharides is likely to enhance the growth rate, activity, and viability of bifidobacteria.

• Korean Journal of Food Science and Technology
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• v.8 no.3
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• pp.136-140
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• 1976

To investigate the preservability of Tongil, three types(rough, brown and milled rice) of Tongil and the common variety (being composed of typical varieties) in Korea were stored at a ambient and a low temperature $(15^{\circ}C)$ warehouse from April to October of each year for three years (1972-1974). The results obtained are described as follows; 1) Temperatures of atmosphere and the natural temperature warehouse changed in the same way. 2) Similar changes of relative humidity were observed in atmosphere and both warehouses. 3) Equilibrium moisture content of Tongil at $25^{\circ}C$ was 0.55 % lower in rough and brown rice. 0.33% lower in milled rice than each type of the common variety. 4) Weight loss rate in the natural temperature storage and in the low temperature storage was 1.35% and 0.74% after 6 month storage. 5) The change of fat acidity in browe rice was greater than any others (rough and milled rice). 6) Hardness of Tongil was 1.64kg higher than that of the common variety. 7) Germination rate was about the same during the low temperature storage, but that of brown of the natural temperature storage was abruptly decreased to $23%{\sim}37%$ after August. As a result, it is possible Tongil is applicable to the long-term storage of rice due to Tongil's superior preservability.