• Korean Architects
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• no.5 s.146
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• pp.53-68
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• 1981

• Korean journal of dermatology
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• v.56 no.9
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• pp.568-569
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• 2018

• Journal of The Korean Society of Agricultural Engineers
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• v.52 no.3
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• pp.9-17
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• 2010

This study aims to evaluate a porous concrete using hwang-toh, blast furnace slag and blast furnace slag (BFS) cement instead of type I cement. The tests that were carried out to analysis the properties of porous hwang-toh BFS cement concrete included compressive strength, continuous void ratio, absorption rate, and pH value, repeated freezing and thawing test were conducted. Test results indicated that the performance in porous hwang-toh concrete are effective on the kaoline based binder materials. The pH value were shown in about 9.5 ~ 8.5. The compressive strength was increased and void ratio was decreased with increasing the kaoline based binder materials, respectively. The void ratio and compressive strength were in the range of about 21 ~ 30 %, 8 ~ 13 MPa, respectively. The increased in void ratio of more than 25 % is showed to reduce the resistance of repeated freezing and thawing. Also, the resistance of repeated freezing of thawing and the compressive strength of porous hwang-toh BFS cement concrete are independent with hwang-toh content and BFS cement amount. But, the void ratio was decreased with increasing the high volume hwang-toh contents (more than 15 %).

• The Journal of Korean society of community based occupational therapy
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• v.4 no.2
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• pp.11-22
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• 2014

Objective : The purpose of this study is to investigate the effect of mental practice with task activities through upper limbs movement speed and accuracy in ideomotor apraxia patient. Methods : As a single subject research design with multiple baseline across individuals, the patients were two ideomotor apraxia patients, employed in this study. The employed program included receiving mental practice and task activities, measuring change of the total performance times, time to put down the last cups and amount of water in cups for 4 weeks, including baseline and intervention periods. The subject were measured by Ideomotor apraxia test and MFT were analyzed. The analyses were performed using visually and two-standard deviation band method. Results : All subjects were a reduction in symptoms of apraxia, but noticeable change in upper limbs function was not there. Total time of performance from 376.67 to 355.24 seconds, 391.33 seconds to 434.60 seconds, reduced. Put down the cup of performance time from 15.67 to 13.30 seconds, 20.80 seconds to 10.73 seconds, reduced. The amount of water transferred from 52.38ml to 49.70ml, 50.89ml to 50.09ml, all results were closer to 50ml. Conclusion : As a result of this study, mental practice with task activities can be an effective method to ideomotor apraxia patients. This study would serve a fundamental data on ideomotor apraxia patients to the further studies.

• Tuberculosis and Respiratory Diseases
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• v.60 no.3
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• pp.290-296
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• 2006

Background : IS6110 DNA fingerprint is a very useful tool for investigating the transmission of tuberculosis. The aim of this study was to identify the epidemiological situations within a given area (one province). Methods : The 681 Mycbobacterium tuberculosis isolates from patients, who were registered at health centers in Gyeonggi Province from May to December in 2004, were subjected to IS6110 DNA fingerprinting. Patients belonging to clusters were interviewed by health-workers to determine their previous contacts or household TB history. Results : The number of IS6110 copies of the 681 isolates showed diverse fingerprint patterns from 0 to 21 of which the most prevalent copy number was 10 from 120 isolates (17.6%). Thirty-three isolates (4.8%) belonged to the K strain, and 128 isolates (18.8%) belonged to the K family. There were 180 (26.4%) isolates belonged belonging to fifty clusters, of which two clusters were within household transmission. Forty-three (23.9%) out of 180 patients resided in an area under the same health center control. The rate of clusters in those aged 60-70 was higher than in any other age group ( 95% CI of RR : 1.072 ~ 1.988). Conclusion : This is the first report of an epidemiological survey based on a whole province using a DNA fingerprinting technique for M. tuberculosis. These results will be helpful in developing a program or policies to prevent the transmission of TB.