• KSBB Journal
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• v.23 no.5
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• pp.375-380
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• 2008

We made an experiment of keeping extension of raw and semi-dried flounder (Pleuronectes herzensteini). Effect of with(WG) or without gill (OG), drying degree (20% drying：20D, 40% drying：40D) and storage temperature (5 and $10^{\circ}C$) and 0.1% chitosan-ascorbate (CA) treatment of vacuum packaging flounder on growth of contaminated microorganism during storage for 10 days were investigated. Total aerobacter (TA) in the OG-treated raw flounder was $0.3{\sim}0.5$ log cycle lower than that of WG-treated flounder and also, number of coliform (CF) and E. coli (CO) in OG were lower compared with WG. Number of TA,. Especially, the TA was $0.42{\sim}1.20$ log cycle lower compared with raw flounder. The TA of the raw flounder stored at $5^{\circ}C$ compared to $10^{\circ}C$ was $0.6{\sim}1.3$ log cycle lower. The growth of total aerobacter, coliform (and E. coli separated from raw flounder in tryptic soy broth were completely inhibited by 0.1% CA. But the growth of TA in the raw and 20% dried flounder was 1.5 log cycle inhibited by 0.1% CA, and the growth of CF and CO were also slightly inhibited. We did value raw sample that treated CA 0D and 20D, and did vaccum packaging at the $10^{\circ}C$ for 10 days, Sensory quality such as appearance, freshness, and texture and overall acceptability after cooking of the 0.1% CA-treated raw and 20% dried flounder were evaluated from good to very good, while CA non-treated products were evaluated to moderate.

• Journal of Sport and Applied Science
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• v.2 no.1
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• pp.1-10
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• 2018

Today, the population of cycle participants is consistently increasing. Cycling is becoming not only a form of physical exercise but also a form of tourism in which cycle activities are related to visiting a particular destination. With the perspective of participation sport tourism, the purpose of this study is to investigate how the level of cycle tourists' participation affects their quality of life. An online survey link was sent to cycle participants to collect data. Out of the total 337 respondents, a total of 226 samples were used for the final analysis, disregarding those that were found to be inadequate or unreliable. For data analysis, frequency analysis, reliability test, validity, correlations, and regressions were employed with SPSS 22.0. For our first result, we found that the level of cycle participation did not significantly affect the quality of physical life. Second, the level of cycle participation did not have significant effect on the quality of mental life. Third, the level of cycle participation behavior did not have a significant effect on the quality of social life. Fourth, the level of cycle participation behavior did not have a significant effect on the quality of environmental life. Conclusions and political implications are discussed.

• Applied Biological Chemistry
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• v.10
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• pp.101-105
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• 1968

The effect of concentration of carbon and nitrogen sources on the sporulation and the life cycles of three strains of Zygosaccharomyces was investigated. The results are as follows: 1) The good sporulation of Zygosaccharomyces bisporus, delbruekii, and Z. steineri was obtained on solid medium containing 0 to 0.001% of nitrogen and 10 to 20% of glucose. The high content of nitrogen was detrimental to sporulation and asci were formed under 0.01% of nitrogen. 2) It is widely accepted that the life cycle of Zygosaccharomyces proceeds in the following way: Ascospore...Vegetative cells...Conjugation of vegetative cells...Sporulation...Ascopores But zygotes of Z. bisporus proceeded to vegetative cells when transfered to the suitable medium for vegetative reproduction, and then formed asci.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.43 no.5
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• pp.551-556
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• 2010

The large jellyfish Nemopilema nomurai causes serious damage to fisheries, particularly around the seas of Korea and Japan. Decreasing this damage requires knowledge of the distribution and abundance of jellyfish. Acoustic technology using quantitative echosounders is one method of studying the distribution and abundance of jellyfish. Such methods are commonly used worldwide because they have the advantage of providing substantial information about all water layers in a wide area in a short time. However, in order to conduct an acoustic survey, the acoustic characteristics of the target organism must be known. These can be altered by a number of factors, including pulsation, swimming angle, frequency and size. Accordingly, this study determined the variation in target strength according to pulsation of N. nomurai. Data were analyzed for two jellyfish with bell diameters in air of (a) was 32.0 and (b) 25.0 cm. The pulsation cycle of jellyfish (a) was 1.5~2.0 sec and the target strength (TS) cycle was 1.0~2.5 sec, while jellyfish (b) had a pulsation cycle of 1.0~1.5 sec and TS cycle of 1.0~3.0 sec. The variation width of the TS with the change in pulsation was 7.8 dB (-72.4~-64.6 dB) for jellyfish (a) and 10.3 dB (-71.6~-61.3 dB) for jellyfish (b). The variation in bell diameter was about 0.28 and 0.35, respectively. These results confirmed that the variation in bell diameter caused by pulsation is closely related to the variation in TS.

• The korean journal of orthodontics
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• v.23 no.4 s.43
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• pp.725-734
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• 1993

Nitinol wires are now widely used in the orthodontic field because of their unique shape memory effect and superelasticity. But sometimes Nitinol wires are deformed in clinical use. Fatigue load is possible cause of Nitinol deformation. To determine the effect of fatigue load to the mechanical properties of Nitinol, various fatigue cycle$(1\times10^4,\;2\times10^4,\;3\times10^4,\;4\times10^4,\;5\times10^4,\;1\times10^5)$ were applied to $0.017\times0.025$ inch Nitinol. The results obtained were as follows ; 1. Applied load increased as fatigue cycle increased in three point bending test. 2. Maximum tensile strength and elongation decreased as fatigue cycle increased. 3. Tn SEM, brittle fracture pattern was increased when fatigue cycle increased.

• Korean Journal of Food Science and Technology
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• v.22 no.6
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• pp.711-715
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• 1990

Continuous column chromatographic separation of lysozyme from egg white was investigated. A weak acid type cation exchange resin, Duolite C-464, was used because of high lysozyme recovery and ease of column operation in this experiment. The resin was equilibrated at $pH\;7.9{\pm}0.1$ in Na+form. Continuous lysozyme separation was processed by repeating cycles(one cycle : resin equilibration, flow egg white, rinse, lysozyme elution) in automated preparative Liquid Chromatography(LC) system(column size ; i.d. 50 mm, resin bed volumn ; 1020 ml). At comparison of UV levels in rinse end point and elution end point of every cycle, the UV levels of rinse end point are maintained below 30% for 19 cycles and that of elution end point are also maintained below 30% for 17 cycles, stably, but was increased above 50% after 18 cycle. That indicated the eluting ability of lysozyme was reduced conspicuously after 18 cycle in continuous cycling process. The recovery of lysozyme was maintained above 90% from one to 17 cycle, but was decreased to 72% and 65% in 18 cycle and 19 cycle, respectively.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.40 no.3
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• pp.177-185
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• 2022

A method of restoring the occluded area was proposed by referring to images taken with the same types of sensors on high-resolution optical satellite images through deep learning. For the natural continuity of the simulated image with the occlusion region and the surrounding image while maintaining the pixel distribution of the original image as much as possible in the patch segmentation image, CycleGAN (Cycle Generative Adversarial Network) method with ConvNeXt block applied was used to analyze three experimental regions. In addition, We compared the experimental results of a training patch size of 512*512 pixels and a 1024*1024 pixel size that was doubled. As a result of experimenting with three regions with different characteristics,the ConvNeXt CycleGAN methodology showed an improved R² value compared to the existing CycleGAN-applied image and histogram matching image. For the experiment by patch size used for training, an R² value of about 0.98 was generated for a patch of 1024*1024 pixels. Furthermore, As a result of comparing the pixel distribution for each image band, the simulation result trained with a large patch size showed a more similar histogram distribution to the original image. Therefore, by using ConvNeXt CycleGAN, which is more advanced than the image applied with the existing CycleGAN method and the histogram-matching image, it is possible to derive simulation results similar to the original image and perform a successful simulation.

• The Korean Journal of Physiology
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• v.15 no.1
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• pp.45-51
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• 1981

The aim of this study was to investigate the pulmonary function tests of athletes related to Running, Swimming, Cycle, Taekwando, Wrestling, Boxing, Yudo, Badminton, Base-ball, Soccer, Hand-ball, Basket-ball and Volley-ball. Subjects were 269 athletes from 18 to 22 years of age. They were college students and citizens. The results are as follows: 1) Frequency of breath: (cycles/min., $M{\pm}S.D$) Running shows $13{\pm}3.6$, Swimming $12{\pm}3.2$, Cycle $13{\pm}3.4$, Taekwondo $12{\pm}4.0$, Wrestling $14{\pm}2.5$, Boxing $15{\pm}4.5$, Yudo $13{\pm}3.2$, Badminton $14{\pm}5.7$, Base-ball $15{\pm}6.2$, Soccer $13{\pm}2.5$, Hand-ball $14{\pm}2.5$, Basket-ball $12{\pm}5.6$, Volley-ball $12{\pm}4.2$(Table 2, Fig. 1). 2) Vital capacity: (1, $M{\pm}S.D$) Running shows $4.29{\pm}0.634$, Swimming $4.30{\pm}0.608$, Cycle $4.08{\pm}0.718$, Taekwondo $4.32{\pm}0.595$, Wrestling $4.40{\pm}0.663$, Boxing $4.45{\pm}0.779$, Yudo $4.58{\pm}0.389$, Badminton $3.98{\pm}0.556$, Base-ball $3.99{\pm}0.617$, Soccer $4.42{\pm}0.728$, Hand-ball $4.23{\pm}0.397$, Basket-ball $4.28{\pm}0.426$, Volley-ball $4.60{\pm}0.620$(Table 2, Table 3, Fig. 2). 3) Tidal volume: (ml, $M{\pm}S.D$) Running shows $615{\pm}180$, Swimming $603{\pm}121$, Cycle $529{\pm}189$, Taekwondo $726{\pm}112$, Wrestling $512{\pm}90$, Boxing$622{\pm}134$, Yudo $583{\pm}89$, Badminton $672{\pm}121$, Base-ball $714{\pm}97$, Soccer $579{\pm}89$, Hand-ball $507{\pm}69$, Basket-ball $628{\pm}133$, Volley-ball $597{\pm}144$(Table 2, Fig.3). 4) Breath holding time : (sec., $M{\pm}S.D$) Running shows $64{\pm}18.8$, Swimming $81{\pm}23.0$, Cycle $54{\pm}13.6$, Taekwondo $55{\pm}11.8$, Wrestling $78{\pm}12.5$, Boxing $63{\pm}9.6$, Yudo $71{\pm}14.4$, Badminton $62{\pm}9.8$, Base-ball $58{\pm}8.9$, Soccer $65{\pm}10.9$, Hand-ball $66{\pm}7.6$, Basket-ball $62{\pm}8.8$, Volley-ball $57{\pm}13.4$(Table 2, Fig.4).

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.11
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• pp.44-55
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• 2019

This study was undertaken to examine changes in the performance of nurses before and after initial cardiac arrest, and compare the performance, confidence, and satisfaction between two groups: group 1, Rapid Cycle Deliberate Practice simulation method; group 2, traditional simulation method. The participants were 122 nurses (group 1: 62, group 2: 60). Data were collected from March 18 to 29, 2019 and analyzed using the SPSS Version 23.0 program, by applying descriptive statistics, Fisher's exact test, t-test, Wilcoxon sign rank test, and Mann-Whitney U-test. Comparing the educational effects of the traditional simulation training vs. RCDP simulation training, some items of performance were significantly different (z=-2.02, p=0.044 / z=-2.42, p=0.015 / z=-3.03, p=0.002), but no difference was observed in the levels of confidence (z=0.388, p=0.699) and satisfaction (t=0.72, p=0.476) between the two groups. This study confirms that both training methods are effective teaching modules for enhancing the nurse's ability to perform resuscitation with confidence. Hence, we suggest applying the appropriate simulation method, according to the subjects included during education, and contents in the training of Advanced Life Support for nurses. Effectiveness of the modules can be ascertained by applying the RCDP simulation training method in various fields.

• Korean Chemical Engineering Research
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• v.59 no.3
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• pp.393-398
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• 2021

In order to optimize the performance of a lithium-ion battery, a performance prediction modeling technique that considers various degradation factors is required. In this work, mathematical modeling was carried-out to predict the change in discharging behavior and cycle life, taking into account the cycle aging of lithium-ion batteries. In order to validate the modeling, a cycling test was performed at the charge/discharge rate of 0.25C, and discharging behavior was measured through RPT (Reference Performance Test) performed at 30 cycle intervals. The accuracy of cycle life prediction was improved by considering the break-in mechanism, one of the phenomena occurring in the BOL (beginning of life), in the model for predicting the cycle life of lithium-ion batteries. The predicted change in cycle life based on the model was in good agreement with the experimental results.