• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.19 no.3
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• pp.331-338
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• 2021

Extensive studies have been conducted on thermal conductivity of bentonite buffer materials, as it affects the safety performance of barriers engineered to contain high-level radioactive waste. Bentonite is composed of several minerals, and studies have shown that the difference in the thermal conductivity of bentonites is due to the variation in their mineral composition. However, the specific reasons contributing to the difference, especially with regard to the thermal conductivity of bentonites with similar mineral composition, have not been elucidated. Therefore, in this study, bentonites with significantly different thermal conductivities, but of similar mineral compositions, are investigated. Most bentonites contain more than 60% of montmorillonite. Therefore, it is believed that the exchangeable cations of montmorillonite could affect the thermal conductivity of bentonites. The effect of bentonite type was comparatively analyzed and was verified through the effective medium model for thermal conductivity. Our results show that Ca-type bentonites have a higher thermal conductivity than Na-type bentonites.

• Bulletin of the Korean Mathematical Society
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• v.57 no.3
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• pp.583-595
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• 2020

Let HE_I, HE_II, HE_III and HE_IV be the first, second, third and fourth type Loo-Keng Hua domain respectively, 𝜑 a holomorphic self-map of HE_I, HE_II, HE_III, or HE_IV and u ∈ H(𝓜) the space of all holomorphic functions on 𝓜 ∈ {HE_I, HE_II, HE_III, HE_IV}. In this paper, motivated by the well known Hua's matrix inequality, first some inequalities for the points in the Bers-type spaces of the Loo-Keng Hua domains are obtained, and then the boundedness and compactness of the weighted composition operators W_𝜑,u : f ↦ u · f ◦ 𝜑 on Bers-type spaces of these domains are characterized.

• Asian-Australasian Journal of Animal Sciences
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• v.17 no.3
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• pp.428-433
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• 2004

The aim of this study was to investigate the histochemical parameters of muscle fibers, and to estimate the correlation between these histological parameters and carcass traits in pigs. A total of 230 crossbred Duroc$\times$(Yorkshire$\times$Landrace) pigs (149 gilts and 81 castrated male pigs) was evaluated. Carcass traits (carcass weight, backfat thickness, and loin eye area), muscle fiber size (crosssectional area, diameter, and perimeter), muscle fiber number (density of fibers/$mm^2$ and total number of fibers), and fiber type composition (percentages of myofibers and relative areas of each fiber type) were evaluated. Mean cross-sectional area (CSA) and type IIB fiber CSA were positively correlated to carcass weight, backfat thickness and loin eye area. Mean fiber CSA was mostly related to type IIB CSA (r=0.98) as a result of the high percentage of type IIB fibers in the longissimus muscle. Correlations between fiber diameters and perimeters were also high, and showed similar results with CSA. Mean fiber density was negatively correlated to carcass weight (r=-0.24), backfat thickness (r=-0.18) and loin eye area (r=-0.27). To the contrary, total fiber number was positively correlated with carcass weight (r=0.27) and loin eye area (r=0.53). Carcass weight and loin eyZe area were not significantly related to muscle fiber composition. For backfat thickness, there was an opposition between type IIA percentage, which was positively related and type IIB percentage, which was negatively related. Fiber type composition of type I and IIA fibers were negatively correlated to that of type IIB fibers (r=-0.67 to -0.74). In the present study, carcass weight and loin eye area were positively correlated to CSA and negatively correlated to fiber density. But, these relationships were generally low. The fiber density was strongly affected by muscle fiber size and the total fiber number was affected either by CSA of muscle fiber and loin eye area. Fiber type composition was much more related to their numerical abundance than their CSA.

• Journal of Korean Medical classics
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• v.26 no.3
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• pp.99-109
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• 2013

Objective : The purpose of this study is to extend indications of Four-Constitution Medicinal formulas by comparing with formulas on Dongeuibogam(東醫寶鑑), focusing on their composition. Method : 1. We analyzed the composition of Sanghan formulas(傷寒方) and non-classical formulas(後世方) which are mentioned on Donguisusebowon(東醫壽世保元), focusing on their composition. 2. We analyzed the composition of formulas on Dongeuibogam(東醫寶鑑) comparing with Bojungyikgi-tang for So-Eum type. Result & Conclusion: 1. Je-Ma Lee didn't say the Sanghan formulas(傷寒方) and non-classical formulas(後世方) with criterion of composition on his book. 2. We finally selected one formulas(Insamhwanggi-tang) and its effect as similar formulas with Bojungyikgi-tang for So-Eum type.

• Journal of the Korean housing association
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• v.14 no.5
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• pp.19-26
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• 2003

The purpose of this paper is to examine and analyse the features of plan type and space composition of the Siheyuan(courtyard house) which is one of the most remarkable types of the traditional dwellings in China. With the passage of time this house developed into one of the chinese house style. The technique of Siheyuan's spatial composition goes so far back in the New Stone Age. The relics of this are the colony layout, the system of four sides, the layout type of a palace, the picture of lacquered ware, the pictured brick, the earthenware of house type, the cave painting, the paintings of painters and others. The fundamental spatial conception of it arranges one or more courtyards to compose, sometimes in a very complex way, a general walled compound. The main longitudinal axis is mainly north-south, but the chief buildings, or halls are always placed transversely to it. These rectangular buildings mayor may not connect, by means of open galleries variously planned, with rows of smaller buildings flanking the courtyards on both sides. On this system, enlargement is never carried out by adding to height, but by continual duplication of existing units, and growth in breadth or preferably depth. The need for family security is thought to have led to the development of this rectangular houses with walls mainly blank on the outside, defensible entrances, and public service facilities in the center of the houses.

• Journal of Welding and Joining
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• v.14 no.6
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• pp.93-100
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• 1996

Effect of a flux composition on weld metal toughness in submerged arc welding with 60kgf/$\textrm{mm}^2$ grade C-Mo type wires was investigated and interpreted in terms of weld metal microstructure and hardenability. Flux workability was also studied by characterizing a weld bead profile. Compared to other weld metals, .weld metal used alumina basic flux with nickel showed lowest oxygen content, highest hardenability and the most acicular ferrite. The highest impact toughness of that weld metal, however, was attributed to the tough matrix due to the nickel rather than to the larger amount of acicular ferrite. Manganese silicate flux had better workability than alumina basic flux, showing broader welding conditions resulting in a depth-to-width ratio of 0.5. The composition of oxides in the weld metal was dependent on the flux composition, showing MnO-SiO$_2$-TiO in manganese silicate flux and MnO-SiO$_2$-Al$_2$O$_3$-TiO in alumina basic flux. MnO-SiO$_2$composition in both oxides was similar to a tephroite.

• Journal of the Korean housing association
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• v.10 no.4
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• pp.11-21
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• 1999

The purpose of this study is to analyze the interrelation of architectural composition and type of windows and doors in Korean traditional architecture. Windows and doors type, in Korean traditional architecture, is one of the important element which used to playa great role in building's physical fasade, so that used to subjected the building as a whole. In this study, the investigations on the totally 88 Korean Buddhist Temples are made, and the analysis are made according to the physical size of buildings (length and height of JUGAN), composition of JUGAN, and existence of RUGAK. The result of this study indicates that there are outstanding typical differences of traditional windows and doors in advance to variation in the physical size of building, though there are numerous interrelation between typical differences of traditional windows and doors and composition of building as a whole.

• Fashion & Textile Research Journal
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• v.7 no.2
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• pp.135-142
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• 2005

Through the formative analysis of the traditional jokakbo, we have composed surface composition that was made by a perfect square, triangle, a weather vane type, vertical type, cint$\tilde{a}$mani type, and a mixed rectangular. And we have composed that was made by vivid tone, pale tone, and so on, and finally analyzed image, preference rate of them. First, the cause of composition for the image of stimulant was composed by the cause of simplicity characteristics, interesting characteristics, rigid-flexibility characteristics, and modern characteristics. Secondly, the image of clothes was revealed as a simple image of perfect square, a feminine image of cint$\tilde{a}$mani type, a modern image of mixed rectangular in the case of large pattern. And in the case of small pattern, perfect square was revealed as a simple image, cint$\tilde{a}$mani type was revealed as a feminine image, triangle with achromatic colored weather vane type and pale tone was revealed as an interesting image, achromatic colored and pale toned a weather vane type, vivid toned vertical type was revealed as a modern image. Lastly, it revealed that the preference rate against clothes is related with the cause of simplicity characteristics, interesting characteristics, and rigid-flexibility characteristics in the case of large patterns, and especially in the case of large patterns and small patterns, the clothes of pale tone are more preferred. And achromatic colored mixed rectangular and chromatic colored cint$\tilde{a}$mani type are more preferred by the large patterns, and chromatic colored and pale toned weather vane type is more preferred by the small patterns.

• Korean Institute of Interior Design Journal
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• v.23 no.5
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• pp.131-138
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• 2014

The purpose of this study is to examine spatial composition elements of the public sector through medium-sized first class urban hotels of Korea and Japan, the two countries with geopolitical closeness and high cultural and economic correlation, and to provide data needed for devising future urban hotel plans. The scope of this study included case studies on medium-sized first class urban hotels (10 urban hotels with concours composition type in the public sector) located in downtowns of Korea (5 hotels) and Japan (5 hotels). The study was conducted by analysis of drawing based on review of preceding studies and literature, and on-site survey. The results of survey and analysis on physical spatial elements shown in medium-sized urban hotels of Korea and Japan with concours composition type among composition types in the public sector are as follows. First, as a result of analyzing spatial elements of medium-sized urban hotels in the public sector, an in-depth checklist must be prepared with consideration on intimate correlation between elements to devise a construction spatial plan for urban hotel in the future. Second, as a result of comparatively analyzing area ratio for each function (public sector, sales sector and service sector) through area analysis on the lower floors of medium-sized urban hotels, reference data for planning were found in regards to spatial composition ratio of the public sector. Third, as a result of analyzing spatial elements of lobby hall and traffic line of visitors on the lower floors of medium-sized urban hotels in the public sector, there was a substantial difference between hotels of Korea and Japan.

• Journal of the Korean Institute of Rural Architecture
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• v.25 no.3
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• pp.17-25
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• 2023

The purpose of this study is to analyze the location and space composition of small elderly care facilities in gyeongsangnam-do and to present a desirable direction for planning small elderly care facilities. As a research method, the location and spatial composition of 82 facilities for elderly care facilities with a capacity of 10 to 29 installed in Gyeongsangnam-do were investigated. In particular, the location, site area, total floor area, and composition of major rooms of small elderly care facilities were analyzed. The results of the survey and analysis are as follows. First, as for location characteristics, 56.1% of the suburban and rural types, 28.1% of the urban area type, and 12.2% of the mountain type were found in order. Second, in the connection between location and spatial composition, stand-alone facilities accounted for 53.7%, and complex types accounted for 46.3%. Third, the average number of admissions was 23.1, and facilities corresponding to the size of 26-29 admissions were the largest at 41.0%. The total floor area per person was 28.3m². Fourth, in terms of the spatial composition of facilities, stand-alone facilities accounted for 53.7%, and complex types accounted for 46.3%. Fifth, by the number of people in the bedroom, 49.4% were installed in the order of a four-person room, 25.0% in a three-person room, 18.7% in a two-person room, and 3.5% in a one-person room. In addition, in the bedroom lifestyle, 84.1% of the bed type and 15.9% of the bed + sitting type were found.