• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.274-280
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• 2008

The study of subjects were 8 persons. The study measured VO2max of each person and substituted METs at exercise intensity of both VO2max 50% and VO2max 70% in accordance with energy consumption formula to set exercise time at energy consumption of both 300kcal and 600kcal. And, the study substituted inclination and rate at exercise intensity that was measured at preliminary test. T, B, NK cell varied depending upon aerobic exercise to have no significant difference of exercise intensity at relative ratio of T, B, NK lymphocyte of all of lymphocytes and to have significant difference of Expenditures Calorie (p<.01) and interaction (p<.05) by T cell and Expenditures Calorie (p<.01) by B cell and Expenditures Calorie (p <.001) and interaction (p<.05) by NK cell.

• Korean Journal of Environmental Agriculture
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• v.40 no.1
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• pp.40-48
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• 2021

BACKGROUND: Although the calcined oyster shell can be used as a calcium-rich adsorbent for phosphate removal, information about it is limited. The purpose of this study was to evaluate the phosphate adsorption characteristics and its mechanism using calcined oyster shells. METHODS AND RESULTS: In this study, calcined oyster shell (C-OS600) was prepared by calcining oyster shells (P-OS) at 600℃ for 20 min. Phosphate adsorption by C-OS600 was performed under various environmental conditions. Phosphate adsorption by C-OS600 occurred rapidly at the beginning of the reaction, and the time to reach equilibrium was less than 1 h. The optimal isotherm and kinetic models for predicting the adsorption of phosphate by C-OS600 were the Langmuir isotherm and pseudo-second order kinetic model, respectively, and the maximum adsorption capacity derived from the Langmuir isotherm was 68.0 mg/g. The adsorption properties of phosphate by C-OS600 were dominantly influenced by the initial pH and C-OS600 dose. In addition, SEM-EDS and FTIR analysis clearly showed a difference in C-OS600 before and after phosphate adsorption, which proved that phosphate was adsorbed on the surface of C-OS600. CONCLUSION: Overall, the calcined oyster shell can be considered as an useful and effective adsorbent to treat wastewater containing phosphate.

• Journal of the Korea Convergence Society
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• v.10 no.7
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• pp.87-92
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• 2019

This study was to investigate the convergence relationship of self-esteem, empathy ability and interpersonal relationship ability of 351 dental hygiene students in Jeollabuk-do area. The data were analyzed using SPSS software program 22.0. In case of interpersonal relationship ability, there were significantly different means with health state(p=0.005) and major satisfaction(p=0.004). Self-esteem, empathy ability and interpersonal relationship ability was positive correlated(r=0.600, p<0.01). The factors influencing interpersonal relationship ability were self-esteem and empathy ability(p<0.001). The explanatory power of the study was 38.0%. It is necessary to develop a dental hygiene education program for improving self-esteem, empathy ability and interpersonal relationship ability.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.3
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• pp.361-381
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• 2016

This study proposed two topical relevance models, simple and complex models, using EEG/ERP techniques. In the simple model regarding simple search tasks, N300 and P3b components are used. The N300 is specific to the semantic processing of pictures and the P3b reflects mechanisms involved in the decision about whether an external stimulus matches or does not match an internal representation of a specific category. In the complex model regarding complex search tasks, on the other hand, N400 and P600 components are used. The N400 reflects activation of an amodel system that integrates both image-based and conceptual representations into a context, whereas the P600 is related to complex cognitive processes. Our research results can be used as a source to design an EEG-based interactive multimedia system.

• Asian-Australasian Journal of Animal Sciences
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• v.25 no.4
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• pp.452-461
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• 2012

Four, ruminally fistulated crossbred (Brahman${\times}$native) beef cattle with initial body weight of $420{\pm}15kg$ were randomly assigned according to a $4{\times}4$ Latin square design. The dietary treatments were mulberry leaf pellet (MUP) supplementation at 0, 200, 400 and 600 g/hd/d with rice straw fed to allow ad libitum intake. All steers were kept in individual pens and supplemented with concentrate at 5 g/kg of body weight daily. The experiment was 4 periods, and each lasted 21 d. During the first 14 d, all steers were fed their respective diets ad libitum and during the last 7 d, they were moved to metabolism crates for total urine and fecal collection. It was found that increasing MUP levels resulted in linearly increasing rice straw and total intakes (p<0.05). Ruminal temperature and pH were not significantly affected by MUP supplementation while $NH_3$-N concentration was increased (p<0.05) and maintained at a high level (18.5 mg/dl) with supplementation of MUP at 600 g/hd/d. Similarly, viable total bacteria in the rumen and cellulolytic bacteria were enriched by MUP supplementation at 600 g/hd/d. However, the rumen microbial diversity determined with a PCR-DGGE technique showed similar methanogenic diversity between treatments and sampling times and were similar at a 69% genetic relationship as determined by a UPGMA method. Based on this study, it could be concluded that supplementation of MUP at 600 g/hd/d improved DM intake, ruminal $NH_3$-N, and cellulolytic bacteria thus iimproving rumen ecology in beef cattle fed with rice straw.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.6 no.3
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• pp.399-405
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• 1996

The present buried contact (BC) solar cell research at SAIT includes the development of a processing sequence suitable for production of the single sided (SS) BC solar cells. This paper presents some results for large area ($45cm^{2}$) SSBC cells fabricated on FZ and CZ silicon substrates. Cell efficiencies in excess of 18% fabricated on FZ, p-type, 0.5 ohm-cm, and over 16% on CZ p-type, 10~20 ohm-cm, wafers have been demonstrated. Both the FZ and CZ wafers were chemically textured. These results are preliminary and the exploration of double sided (DS) sequence, which is the future BC structure would lead to over 17% and 20% efficiency cells on CZ and FZ substrates respectively. The cost of solar cells can be reduced further if the many high temperature steps can be reduced to only one. This would be very advantageous to very poor quality substrates such as the CZ grown wafers.

• Journal of Korean Society of Environmental Engineers
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• v.36 no.6
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• pp.429-433
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• 2014

The objective of this study was to find optimum amount of bamboo smoke distillate (BSD) and reaction time (RT) for ammonia removal in food waste compost (FWC). BSD amount (30 to 90 mL BSD/600 g FWC) and RT (1 to 3 h) significantly affected the ammonia removal in FWC. Within the design boundaries, the optimum conditions for maximum ammonia removal (8.47 ppm $NH_3$/600g FWC) were 74 mL BSD/600 g FWC (0.123 mL BSD/g FWC) and 3 h RT. The BSD was effective on ammonia removal in FWC, rather than vinegar (p < 0.05). Our results proved a good potential of BSD to serve as an alternative deodorant for FWC.

• Microbiology and Biotechnology Letters
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• v.30 no.1
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• pp.8-14
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• 2002

Pseudomonas sp. S-47 is capable of degrading 4-chlorobenzoate to produce 5-chloro-2-hydroxymuconic semialdehyde (5C-2HMS) by the enzymes encoding by xylXYZLTE cluster. In this study, the resulting 5C-2HMS was confirmed to be transformed to 5-chloro-2-hydroxymuconic acid (5C-2HMA) by 5C-2HMS dehydrogenase. The xylG gene encoding 5C-2HMS dehydrogenase was cloned from the chromosomal DNA of strain S-47. The nucleotide sequence of xylG showed to be composed of 1,600 base pairs with ATG initiation and TGA termination codons. A deduced amino acid sequence of the 5C-2HMS dehydrogenase (XylG) exhibited 98％, 93％, and 89％ identity with those of the dehydrogenases from P. putida mt-2, P. putida G7, and Pseudomonas sp. CF600, respectively.

• Journal of Nutrition and Health
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• v.28 no.5
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• pp.387-396
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• 1995

This study was undertaken to investigate the effect of increase in the ratio of zinc to copper and alcohol consumption on serum lipid content in Sprague-Dawley male rats during five weeks. Sixty rats were divided into six groups, CZ < zinc 30ppm diet >, CZA < zinc 30 ppm diet plus alcohol 5% solution >, HZ < zinc 300ppm diet >, HZA < zinc 300ppm diet plus alcohol 5% solution >, SHZ < zinc 600ppm diet >, SHZA < zinc 600 ppm diet plus alcohol 5% solution >. High ratio of zinc to copper groups < HZ, SHZ > were significantly decreased in high-density lipoprotein (p<0.01) and increased in total cholesterol, triglyceride, total lipid in serum(p<0.001, p<0.001, p<0.01). Triglyceride levels of serum in alcohol groups < CZA, HZA, SHZA > were significantly higher (p<0.001) than non-alcohol group < CCZ, HZ, SHZ >. Copper levels of serum were reduced in group high ratio of zinc to copper. These results present that high ratio of zinc to copper increase cholesterol(p<0.001) and alcohol consumption increase triglyceride(p<0.001) in serum. This close association to lipid metabolism in rats draw attention to the potential significance of zinc and alcohol nutriture in relation to cardiovascular disease.

• Natural Product Sciences
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• v.9 no.4
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• pp.256-259
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• 2003

The pet ether extract of Caesalpinia pulcherrima, leaves was studied for its antinociceptive, anti-inflammatory and antipyretic property. The extract at doses of 50 and 200 mg/kg, p.o., significantly (p<0.05) reduced the number of writhing induced by acetic acid and inhibited the late phase (20-30 min) in formalin test in mice. The extract failed to increase the pain threshold level in tail immersion test in mice. In carrageenan induced paw edema in rats and in acetic acid induced increase in vascular permeability test in mice, the extract (50-600 mg/kg, p.o.) failed to produce any significant activity. While in cotton pellet granuloma test, the extract at doses of 200 and 600 mg/kg (p.o.) significantly (p<0.05) reduced the granuloma formation and was comparable to reference drug, dexamethasone. In ethylpheylpropiolate ear edema test 0.5 mg and 1 mg/ear application of extract significantly (p<0.05) inhibited ear edema. In yeast induced hyperthermia in rats, the extract did not produce any reduction in temperature. The results suggest that the extract acts peripherally to produce analgesic action and anti-inflammatory activity through steroidal mechanism.