• PNF and Movement
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• v.15 no.3
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• pp.353-360
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• 2017

Purpose: This study aimed to measure static balance of low back pain patients while one-leg standing in abdominal compression belts. Methods: The study included 40 adult males and females at J university, divided into a low back pain patient group and a normal group through the Oswestry disability questionnaire (ODQ). The subjects were instructed to hold a one-leg standing posture for 15 seconds on a balance measurement plate while wearing an abdominal compression belt. Shifting distance (0.1 cm), mean velocity (cm/s), pressure, and contact area were analyzed using BioRescue (BioRescue, RMINGEIEIRIE, Rodez, France). The average value was used to measure the result 3 times for each condition. Results: Both normal and low back pain groups significantly decreased in the speed of sway while wearing the abdominal compression belt. Furthermore, the pressure of the center of motion significantly decreased in the low back pain groups while wearing abdominal compression belt. However, there were no significant differences in the speed of sway or the pressure of center of motion between groups after wearing the abdominal pressure belt. Conclusion: These results suggest that abdominal compression belts are one option for improving balance temporarily. However, balance after wearing abdominal compression vests depends on onset of back pain, age, and symptoms of pain in the groups with low back pain. Further research is needed to investigate muscle activity, dynamic balance, and the effect of the period of wearing abdominal compression belts in the variety of low back pain patients.

• Journal of the Korean earth science society
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• v.30 no.1
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• pp.96-110
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• 2009

The ESE (Earth Systems Education) teaching module was developed to teach an "Earth and Star" unit for the 8th grade (aged 14) students. The planet remodeling activity was developed as a sub-ESE teaching module. The main point of this activity was that students were supposed to remodel planets for life to live on. The purpose of this study was to visualize students' thought and to interpret their understandings through their drawings and writings. A framework of analysis with four categories was designed and applied to analyze students' cognitive structure. In order to explore students' cognitive contents, the analyzing factors were classified into two domains: subsystems of the earth systems and use of science & technology. Results revealed via the planet remodeling activity that students' cognitive characteristics were impacted by ESE activities such as Earth literacy.

• Journal of fish pathology
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• v.13 no.1
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• pp.7-13
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• 2000

Beginning in the summer of 1993, a serious mortality among cultured penaeid shrimp occurred in the western sea of Korea. The typical sign of this disease was white spots inside the surface of the carapace. Cytopathic effect (CPE) were not observed by virus in CHSE-214, RTG-2, but not by pH 11. A nonoccluded rod-shaped form virus was observed by electron microscopy in the lymphoid organ. The virion was bacilliform virus and sourrounded by a virion envelope. Its virion protein was found to be similar to hypodermal and hematopoietic necrosis virus (HHNBV) by analysis of virion proteins in SDS-PAGE. The genome of virus is double stranded DNA molecule whose full length was about 114kb. It was similar to penaeus acute viremia (PAV) of Japan.

• The Journal of the Korea Contents Association
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• v.8 no.8
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• pp.213-222
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• 2008

The goal of this research was to search for an optimum training program that increases archery performance skills in order to develop a performance training and support. For this research, by examining the existing sports statistics program, information management system, and other related documents, we were able to derive an athlete management realm as well as find archer factors. Also through a council we categorized the factors that constituted the training general management. The archery training general management system consists of six realms. First is the log-in and main screen realm. Second is the athlete information category. Third, the point of impact information category. Fourth, the shift-in-frequency analysis realm. Fifth, in the detailed analysis realm. Thus, the developed archery training general management system allows for a more generalized and scientific athlete management and support system. and it has turned out to be an adequate system for archer's performance.

• Korean Chemical Engineering Research
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• v.40 no.6
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• pp.757-762
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• 2002

The interest of incineration, which is one of the effective methods for municipal waste disposal, has gradually increased because the incineration could reduce the volume and weight of the waste, and produce useful energy from the waste. This study has developed the 3-dimensional numerical model, and applied for the investigation of combustion characteristics and optimized operating conditions in MSW incinerator in Gwangju. The model developed in this study has been verified through the comparison between the predicted and the measured temperature in combustion chamber which is operating. By predictive results, the Sangmoo incinerator has a good characteristics of combustion efficiency and a low emission by the second burning in the main flame zone, even though after burning zone produces incomplete products by which primary air is introduced not enough.

• Journal of the Korean Society of Propulsion Engineers
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• v.18 no.4
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• pp.33-42
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• 2014

Flame behaviors and interaction between pilot and main flames in a dual swirl combustor were investigated experimentally and numerically. Under the condition of fixed swirl angle of $45^{\circ}$ for main flame, the swirl angle of pilot flame, total heat release rate and equivalence ratio of main flame were used as major parameters. As a result, detailed flame stability diagram of dual swirl combustor was identified in terms of 5 flame modes with the changes in total heat release rate and equivalence ratio of main flame. It was found that the swirl angle of pilot flame plays the most important role in the changes in flame location and overall flow structure inside the combustor, and thus leads to the significant change in the interaction between pilot and main flame.

• Journal of the Korea Convergence Society
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• v.8 no.9
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• pp.265-270
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• 2017

This study purposed to investigate harmonic compositions and progressions that are appropriate for emotion vocabulary. In study 1, eight(8) professional music therapists were asked to provide harmonic compositions and progressions reflecting the tonal characteristics of emotion vocabulary and the rationales. Various attributes of harmonic compositions and progressions were examined and the content analysis were administered. In study 2, the obtained data on study 1 were evaluated by 124 music therapy and music majors for the validity. In the first study, analyzed results showed that 'happy' vocabulary utilized major, tonic, consecutive chord changes, 'angry' vocabulary utilized minor, augmented, $9^{th}$, $11^{th}$, unsolved $7^{th}$ chord progression, 'sad' vocabulary utilized minor, diminish, chromatic chord progressions. In the second study, there was statistically significant difference with 'happy' vocabulary. These results can provide basic evidences for musical ideas of harmonic compositions and progressions to better communicate emotional aspects of lyrical messages when composing melody in a song.

• Journal of fish pathology
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• v.12 no.1
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• pp.56-62
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• 1999

Since 1998, mass mortality of the Japanese flounder has widely occurred in the south and west coastal area of Korea. A new serotype birnavirus was isolated during the investigation of the cause of the disease. By the electromicroscopic examination, the isolated virus particles appeared hexagonal and unenveloped with an average diameter 52 to 56 nm. Birnavirus specific fragment was amplified by RT-PCR. High yield of virus (10.3 to 10.8 log $TCID_{50}/ml$) was produced in CHSE-214. RTG-2 and RTE-2 cells. Typical birnavirus CPE was observed in these cells. On the contrary, the virus CPE was not shown in the FHM and EPC cells. By a cross-neutralization test with IPNV Ab, IPNV Sp, IPNV VR-299 and MBV Y6, the isolated virus was closely related to marine birnavirus (MBV).

• Proceedings of the KOR-BRONCHOESO Conference
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• 1976.06a
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• pp.88.2-89
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• 1976

Clinical observation is made on the total 205 cases of foreign bodies in the air and food passages. The entire foreign body cases that had visited ENT Dept. of Han Gang Sacred Heart Hospital from January, 1972 to March, 1976 are included in this study. The results summarized are as follows: 1) The majority of the cases of foreign bodies are found in the food passage, 200 cases (97.6%) while in the air passage only 5 cases was present. 2) The most common foreign bodies in the esophagus was coin (90%) and in the air passage, the sorts of foreign bodies are bean, peanut, plastic bullet, corn and towel clip. 3) In the locality of foreign bodies, the first narrowing is the most frequent site in the esophagus. 4) The majority of the cases with esophageal foreign body is male (M:F 1.4 : 1), in the air passage (M:F 3:2). 5) The patients with esophageal foreign body visited within 3 days in 87%, and with trachiobronchial foreign body visited within a day in all cases.

• Journal of the Korean Recycled Construction Resources Institute
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• v.7 no.1
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• pp.50-56
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• 2019

This study aims to make artificial stone by recycling blast furnace slag powder, red mud and recycled aggregate, which are known as industrial waste. Recycled aggregate is a typical construction waste, and various recycled products such as concrete block are being sold. In this study, we tried to make artificial stone mixed with waste such as recycled aggregate, and experimented with the use of artificial stone and further study. As the red mud replacement ratio increased, the absorption ratio, fluidity and air content of the matrix were measured to be decreased, and the strength and density were found to increase. The fluidity and absorption ratio decreased with increasing the replacement ratio of recycled aggregate, and the air quantity, rate of aggregate on the surface, density and intensity increased to a certain level. Therefore, this study intends to make artificial stone using recycled resources and conducted basic experiments for further study.