• 보존과학연구
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• s.13
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• pp.69-80
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• 1992

A great numbers of cultural properties destroyed though attack by insect pests and microorganisms. Biodeterioration damage is particularly serious in this country because many cultural propertiese are made of organic materials. Recently, there are various countermeasures of biodeterioration or alternative methods are reported, such as Gamma Radiation, Micro-wave Irridation, Freezing, Inert Atmosphere (Oxygen-less atmosphere), and Environmental Control. However its practical application are limited and some difficulties for treatment of large objects. Fumigation is one of the most useful and effective methods of control biodeterioration because it gives less damage of cultural properties but rapidly eradicate infesting organisms at one action. This paper evaluated selected fumigants and fumigation methods with emphasis on the following paragraph:1) Effectiveness of selected fumigants on insects and microbes involved inbiodeterioration.2) Physical and chemical characters of selected fumigants.3) Less toxic new alternative fumigant and its mixtures.4) Inert atmosphere (Oxygen-less atmosphere)5) Methods of fumigation : Sealed fumigation, Covered fumigation and Vacuum fumigation (Reduced-pressure fumigation)

• Journal of Ginseng Research
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• v.16 no.3
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• pp.235-260
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• 1992

• Journal of Korean Society on Water Environment
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• v.22 no.1
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• pp.166-171
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• 2006

The objectives of the present paper were to investigate the concentration of total coliform in wastewater effluents and the effect of water chemical and physical characters in it. The most correlated parameter with total coliform was COD. It means that the wastewater treatment efficient effects on total coliform concentration. And we developed predictive model for the total coliform concentration. The estimated parameters for model were COD, temperature, nitrite, chloride, Mn and regression model equation was determined; log (Total Coli.) = 1.861+0.065[COD]+0.038[temperature]-0.0004[$Cl^-$]+3.697[Mn]-0.32 [$NO_2-N$] The developed model provided very strong correlation ($R^2:0.82$) between total coliform and regression equation. The parameters having high sensitivity were COD and temperature. So the study indicated that if the temperature and COD of wastewater effluent were known, we would estimate the concentration of total coliform and decide the most effective usage of chlorine.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2003.05a
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• pp.786-790
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• 2003

The purpose of this research is to observe that the acoustic characters of classroom have some difference by several conditions. TSP has used to measure impulse response and such physical indexes as RT(Reverberation Time), D$\sub$50/, and STI(Speech-Transmission-Index) are computed by it. we investigate difference under some conditions such as when students were present at each classroom and when was not so, and when professor used a microphone and unused it. In this study, we found that reverberation time when people take a seat is lower than was not so. we wish to help one who work for construction industry, as they build a kind of classroom

• Elastomers and Composites
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• v.7 no.1
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• pp.53-58
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• 1972

Sublimatographic study on the method of test for sulfur in the petroleum and rubber products was as following results: (1) The relation between the heating temperature$(t_h)$ and the vacuum condensing point(V.C.P.) of sulfur at different degree of vacuum appeared as Fig.4. The results were in good agreement with those expected from the $t_h-V.C.P$ curves of sublimatographic separation of sulfur. (2) The relation between the degree of vacuum and the V.C.P. at different heating temperature of sulfur appeared as follows; $$tv.c.p.=\alpha+{\beta}logP_{va}$$ (3) The V.C.P of sulfur could be physical property comparing with melting point and boiling point. (4) The relation between the V.C.P. and the quantity of sublimation of sulfur becomes quantitative as Fig.7.

• Journal of the Korean Institute of Rural Architecture
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• v.8 no.2
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• pp.27-35
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• 2006

The park in city, is more than just ecological function, contributes emotional refinement and psychological stability to citizens, and give satisfaction of social and recreational activities to the citizens. And it is the place of leisure and the place to raise up the quality of urban environment. Especially, the neighborhood park among urban parks occupies the most important position as a leisure space for local resident, but it can not perform its purpose and function as a leisure space, due to its too formal and insufficient facilities. This study, approaching from point of physical method, intends to make types through classifying each parks by built-type and installed facilities which affect human-beings, approaching from point of human-beings, intends to make the using-type analysis of park-users, and the questionnaire.By grasping of their requirements regarding to the characters and facilities what they want, willing to present the fundamental data for effective utility-activating method of small-scaled neighborhood park.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2002.11a
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• pp.209-214
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• 2002

This research analyzes the types of resident's satisfaction and the preferred rental housing types in Gwangju. The results are summarized as follows : This study devided the characters of resident's satisfaction into four factors and classified the types of residents into three specific groups by the factors of resident's satisfaction : high dwelling density and management improvement demanding type, medium size and general satisfaction type, environmental improvement demanding type The first type includes the lowest income group and relatively high income group coincidently. They need wider living space or want improvement of the level of management service. The second type omnipresently satisfies not only medium sized living space but also other items. This type will be regarded as the inducement standard for the rental housing policy. The third type includes the lowest group in economic and physical level who wants the general upgrade of living space and management level. And, residents need long-term rental housing and wider housing area by 5 pyong.

• Journal of the Korean Society of Mechanical Technology
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• v.13 no.1
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• pp.1-9
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• 2011

The present study aimed to compare and analyze the particulars of and difference in medical expenses and their composition ratio for 2,026 patients hospitalized at 2 types of medical institutions (443 at a clinic and 1,583 at a hospital) in Jeonju-si, Jeollabuk-do under coverage of automobile insurance during 2009. From the analysis, it became evident that there were differences in individual characters of inpatients covered by automobile insurance, and details, composition and composition ratio of medical treatment for them depending on types of medical institutions. There was no difference, however, between the total and average medical expenses per capita even when markup rate was applied to the automobile insurance by types of hospitals. The ratio of radiotherapy and physical therapy in the composition of medical expenses was found to be extraordinarily high in clinics compared to that of hospitals. The composition ratio of the fixed cost including charge for hospitalization also turned out to be fairly high in all medical institutions.

• PNF and Movement
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• v.9 no.2
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• pp.21-27
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• 2011

Purpose : The purpose of this study was to investigate PNF exercise, the athletic performances and the ability of exercise capacity in Taekwondo. Methods : This is a literature study with books and articles, seminar note and books for PNF international course. Results : The PNF exercise was efficient at improving flexibility and muscle strengthening in Taekwondo athletes. Kinematic characters of Yupchagi and Dollyuchagi in Taekwondo were analogous to Lower extremity Flexion-Abduction-Internal Rotation patterns in PNF, and the kinematic character of Apchagi was to analogous to Lower extremity Flexion-Adduction-External Rotation pattern in PNF. Movements of Upper extremities and Lower extremities during kicking were similar to PNF patterns. The PNF is efficient at improving athletic performances and the ability of exercise capacity in Taekwondo. Conclusion : The result of this study showed that PNF patterns and kicking that is one of the basic movement in Taekwondo have many similarities. With that PNF patterns was the training methods to improve flexibility and muscle strengthening, PNF patterns are considered to improve athletic performances and the ability of exercise capacity in Taekwondo.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.10 no.3
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• pp.14-24
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• 2007

The purpose of this study was to investigate how the landscape characteristics and the physical factors of landscape would affect the preference for the Gapcheon in Daejeon Metropolitan City. The Gapcheon was divided in three sections of the outskirts, Expopark areas, and residential complexes. After selecting seven landscape points where the sections could be expressed best, photographs were taken both in the upstream and downstream direction. The questionnaire used to evaluate the river's landscape included 20 items of adverbs that described the form of the river and one item to rate the overall preference. By analyzing the 14 pictures taken, the occupancy rates of the landscape elements in terms of the sky, river, vegetation of the river, mountain, and artificial structures. Image factor analysis was conducted for each of the sections in order to analyze the landscape characteristics of the Gapcheon, and then regression analysis was conducted in order to analyze the relationships among the physical factors influencing the preference of the landscapes. The results were as follows : Factors that compose the visual characters of urban river were classified be the aesthetic factor, the emotional factor and the situation factor. These 3 factors showed a 65.8% total variance. The river landscape with the biggest preference was the one from the Daedeok Grand Bridge as the occupancy area of the mountain, sky, and river was large and distributed evenly and the vegetation of the river was in a good harmony with the surroundings. After carrying out regression analysis to examine the relationships between the visual preference of Gapcheon and the physical factors of landscape(the sky, river, vegetation of the river, mountain, and artificial structure), the following regressions model was made : PRE=5.906+0.017(river)-0.053(artificial structure)-0.060(vegetation of the river) (R-square=0.48).