• Journal of Environmental Science International
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• v.15 no.8
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• pp.727-735
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• 2006

In this study, the PHYTO-PAM-fluorometric method was used to evaluate the ETR$_{max}$ in terms of sensitivity to DIN/DIP against 14 microalgae: Prorocentrum micans, Heterocapsa triquetra, Gymnodinium impudicum, Cymnodinium catenatum, Amphidinium caterae, Chlorella vulgaris, Chroococcus minutus, Microcystis aeruginosa, Chlorella ellipsoidea, Nannochloris oculata, Oocystis lacustris, Chroomonas salina, Gloeocystis gigas, and Prymnessium parvum. We found that P. micans, H. triquetra, and A. caterae exposed to the maximum level of DIN/DIP were significantly smaller in the ETR$_{max}$ than that of the minimum and moderate mixture. Unlikely the ETR$_{max}$, the initial slope alpha was not significantly different at the level of 60 DIN/DIP. In G. catenatum, the moderate levels of 15 and 20 in DIN/DIP were found to be significantly different from the ETR$_{max}$ at Chl-Ch4. Gymnodinium impudicum had a higher value than that of the ETR$_{max}$ than that of dinoflagellates used in this study, ranging from 306.1 (Ch4, DIN/DIP: 10) to 520.1 (Ch4, DIN/DIP: 30). The ETR$_{max}$ value obtained from other microalgae was similar to C. impudicum at any of the ratios of DIN/DIP and channels. Consequently, the influence of offshore water current assures us of the suppression of photosynthesis and electron transport rate in dinoflagellates. Gymnodinium impudicum has not been researched in the area of red tides in Korea, but it will be enough to creat the massive algal blooms in the future because of higher potential photochemical availability.

• Proceedings of the Korea Contents Association Conference
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• 2012.05a
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• pp.407-408
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• 2012

요약은 이 연구는 다양한 식이 섭취와 일회 지구성 운동으로 야기되는 근육(백색 비복근) 내 AMP-activated protein kinase(AMPK), Extracellular signal-regulated kinase(ERK 1/2)와 p38 mitogen-activated protein kinase(MAPK)의 신호전달체계를 구명해 보고자 실시되었다. 실험에 사용된 쥐(Sprague-Dawley)는 총 160마리로 크게 일반 탄수화물 식이(CHO; 40마리), 포화지방 식이(SAFA; 40마리), 단일불포화 식이(MUFA; 40마리)와 다불포화 식이(PUFA; 40마리)로 나누어 연구를 진행하였다. 운동 프로그램은 일회 지구성 운동으로 30분 운동 후 5분 휴식의 사이클을 지속적으로 6번 반복하여 총 3시간의 지구성 수영 운동을 실시하였고, 분석을 위한 조직 샘플링은 운동 전, 운동 후 0시간, 1시간, 4시간, 24시간에 걸쳐서 이루어졌다. 연구의 결과는 서로 다른 식이 섭취와 운동에 따른 AMPK의 신호전달 단백질의 발현은 유의한 치이가 나타나지 않았다. 그러나 서로 다른 식이를 섭취한 쥐의 근육에서 ERK 1/2(p<.01)와 p38 MAPK(p<.001)의 신호전달 단백질의 발현은 유의한 차이를 보였다(p<.05). 흥미로운 결과는 운동에 대한 유의한 차이는 AMPK, ERK1/2와 p38 MAPK 모두 유의한 차이를 보이지 않았다는 것이다. 결론적으로 일회 지구성 운동보다 서로 다른 식이의 섭취가 근육 내(백색 비복근)의 대사적 변화를 일으키는데 주도적인 영향을 미칠 수 있음을 시사할 수 있다.

• Journal of Korean Physical Therapy Science
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• v.18 no.3
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• pp.1-7
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• 2011

Background : Respiratory muscle weakness has serious clinical consequences. Vital Capacity is the volume of air that is normally exchanged in a single breath. It varies widely with pulmonary health and overall fitness. Purpose : The purpose of this study was to investigate the variation of vital capacity(VC) according to the effects of Kinesio taping and balloons blowing. Methods : Twenty-one non-smokers were participated in this research and these subjects were randomly assigned into three groups; a balloons blowing group(n=7), a Kinesio taping group(n=7), and a balloons blowing and Kinesio taping group(n=7). This experiment was done from June 22, 2009 to July 5, 2009. In order to measure the VC variation effects of Kinesio taping, balloons blowing, and both intervention, an windmill type spiropet was used. The collected data were analyzed statistically by using a paired t-test and ANCOVA. Results : The results of this study were as follows; 1) In the case of balloons blowing, there was a significant difference, 3.35% increase of VC, between before and after 2 weeks experiments(p<.01). 2) In the case of Kinesio taping, there was a significant difference, 11.66% increase of VC, between before and after 2 weeks taping intervention(p<01). 3) In the case of both balloon blowing and Kinesio taping, there was a significant difference, 15.84% increase of VC, between before and after 2 weeks both interventions(p<.01). 4) After 2 weeks experiment, the improvement of VC was shown a significant difference with intergroup(p<.05). Conclusion : From these results, it was revealed that balloons blowing or Kinesio taping, or both interventions were effective to improve VC of healthy adults.

• Korean Journal of Food Science and Technology
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• v.33 no.2
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• pp.252-255
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• 2001

This study was performed to investigate the influence of dietary mulberry leaf on the intestinal microflora in rats. Rats were fed each experimental diets containing 1%, 10% of mulberry leaf powder for 4 weeks. Total viable counts and the numbers of Bifidobacterium, Lactobacillus, Clostridium, E. coli and Staphylococcus were determined by nonselective media and various selective media. A decrease in the intestinal population of Clostridium was shown in dietary mulberry leaf group. The E. coli and Staphylococcus populations decreased in dietary mulberry leaf group compared with control group. Methanol extract and fractions of mulberry leaf were subjected to an in vitro screening test for their growth-inhibitory activity. Methanol extract and Water fraction of Mulberry leaves showed weak growth-inhibition of Clostridium perfringens. These results indicate that the composition of gastrointestinal microflora was improved by treatment of mulberry leaves in SD rats and was very effective for growth inhibition of the intestinal harmful bacteria in intestine. Therefore, the mulberry leaves as a newly bio-material can be a useful material for physiologically functional food.

• Journal of the Earthquake Engineering Society of Korea
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• v.13 no.1
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• pp.9-16
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• 2009

For reinforced concrete members, bond strength is one of the important factors between the two materials: the concrete and the reinforcing element. The bond strength of Aramid Fiber Reinforced Polymer (AFRP) rebar was tested using the pull-out method. Presented were comparison results of the bond strength between AFRP rebar and deformed steel bars from the test. Embedded lengths and diameters of the rebar were taken into account as parameters. The bond stress-slip responses and failure modes of AFRP rebar were evaluated. It was found that the bond stress-slip responses of AFRP rebar were similar to those of deformed steel bars. As the diameter of rebar increased, the pull-out load increased. In addition, it was shown that the bond strength of an AFRP rebar was approximately 54% compared with that of a deformed steel bar.

• Journal of Environmental Science International
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• v.16 no.7
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• pp.799-804
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• 2007

Oil spill caused severe effects on the marine fauna and flora due to direct contact of organisms with the oil and even in regions not directly affected by the spill. This study was conducted to understand the effects of the oil spill accidents and the use of dispersant on the red tide of Cochlodinium polykrikoides. Crude oil produced in Kuwait, bunker-C, kerosene and diesel oil, and a chemical dispersant produced in Korea, were added with a series of 10 ppb to 100 ppm in the f/2-Si medium at $20^{\circ}C$ under a photon flux from cool white fluorescent tubes of $100\;mol\;m^{-2}\;s^{-1}$ in a 14: 10 h L:D cycle for the culture of C. polykrikoides. In low concentrations of ${\leq}$ 1 ppm of examined oils no impact on the growth of C. polykrikoides was recorded, while in high concentration of ${\geq}$ 10 ppm, cell density was significantly decreased with the range of 10 to 80% in comparison with the control. The growth of C. polykrikoides after the addition of the dispersant and the mixtures combined with oils and a dispersant of ${\geq}$ 10 ppm appeared to decrease, whereas the growth of C. polykrikoides exposed to ${\leq}$ 100 ppb showed little serious impact. However, almost all the C. polykrikoides cells were died regardless of a dispersant and combined mixtures within a few days after the addition of high concentrations.

• Journal of Environmental Science International
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• v.16 no.10
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• pp.1119-1125
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• 2007

We examined the horizontal distribution of salinity and the concentrations of DIN and DIP after heavy rain-fall events in coastal areas of South Korea from Yeoja Bay to Narodo and from Gwangyang Bay to Geomodo to determine whether fresh water actually flows into areas of Cochlodinium polykrikoides red tides and to observe its effect on the growth of this organism after heavy rainfall. Following heavy rainfall (155 mm) in the Yeosu and Suncheon regions, the average salinity was 21 and 29 psu at Yeoja Bay and in the coastal waters of Narodo, respectively. After 126 mm of rainfall, the values were 19 and 25 psu in the coastal waters of Yeosu and Geomodo, respectively. This may have been caused by an influx of fresh water, after the rainfall event, into the open sea coastal areas around Narodo and Geomodo from the Dong and Seomjin Rivers, which are about 3540 km away. After the rainfall, the concentrations of $NH_4-N,\;NO_2-N$, and $PO_4-P$ were slightly increased; however, the concentration of $NO_3-N$ was greatly increased and diffused throughout the coastal areas of Narodo and Geomodo, which frequently experience C. polykrikoides blooms. The influence of $NH_4-N,\;NO_2-N$, and $PO_4-P$ on the occurrence of C. polykrikoidesred tides in coastal areas around Narodo and Geomodo after heavy rainfall does not appear to be great. Instead, the occurrence C. polykrikoides red tides in the coastal areas of Narodo and Geomodo seems to be facilitated by $NO_3-N$.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.04a
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• pp.385-388
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• 2008

Modern society is experiencing a high population density and a centralization of facilities. The clear trends in the construction field are aggrandizement, elevation and specialization of building structures. Such trends require improvements of skills in raising material performances, structuring, planning, designing, and increasing construction capacities. In order to procure high performance materials and construction techniques, a top-quality concrete should be used since it takes up a large part of the material. In recent years, active researches have been done on the ultra high strength concrete. Therefore, this experimental study is strength management to fixed quantity in the field of ultra-strong concrete.

• Archives of Craniofacial Surgery
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• v.18 no.3
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• pp.172-178
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• 2017

Background: The conventional cervicofacial flap may cause the aesthetic problem of sideburns with a mismatched shape and arrangement. We developed a modified method with the goals of minimizing the destruction of the shape and arrangement of the sideburns and minimizing complications in comparison with the conventional method. Methods: The incision line was designed to descend just in front of the sideburns, without passing through them, and then to ascend with the sideburns posteriorly when a cervicofacial flap is performed, unlike the conventional method. Patients in whom this method was applied (group B) and patients who underwent surgery using the conventional method (group A) were investigated in a retrospective study. The method was evaluated by assessing changes in the arrangement of the sideburns and patients' satisfaction, and differences in the complication rate. Results: In group A, 23 of the 31 patients experienced changes in the arrangement of their sideburns. Most patients who experienced a change in the arrangement of their sideburns were dissatisfied with the change. The patients in group B did not experience such changes, and the defects were well reconstructed. Most of them were satisfied with the final sideburn arrangement. Conclusion: A novel method was used to preserve the sideburns while performing a cervicofacial flap. As a result, the appearance of the sideburns was well preserved and the satisfaction of patients was also high. Moreover, this technique could also prove useful for reconstruction without any increase in complications compared to the conventional method.

• Tuberculosis and Respiratory Diseases
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• v.41 no.6
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• pp.670-675
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• 1994

Lipoid pneumonia is a chronic inflammatory reaction of the lungs that results from the aspiration of vegetable, animal, or mineral oils. The most frequently implicated agent is mineral oil used as a laxative and to reduce dysphagia. Lipoid pneumonia is suggested when there is a history of chronic oral or intranasal use of an oil- or lipid-based product. The characteristic findings of lipid materials in CT or MRI are used in the diagnosis of lipoid pneumonia. The presence of lipid-laden macrophages in the sputum, bronchoalveolar larvage or pulmonary parenchymal biopsy confirms the diagnosis. Sputum study is simple and inexpensive. We report a case of lipoid pneumonia of 75 year old male with cough and sputum, confirmed by sputum study, and review the literature.