• Journal of Sasang Constitutional Medicine
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• v.32 no.3
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• pp.64-71
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• 2020

Objectives To report an improved case with Taeeumin Mahwangjeongcheon-tang on the patient with chronic bronchitis caused by an inhalation injury. Methods The patient had been suffered from cough, sputum, dyspnea, and chest discomfort for 15 years. He was diagnosed as Taeeumin Esophageal Cold Pattern and was given Mahwangjeongcheon-tang according to Sasang constitutional medical theory. The clinical asthma measurement scale in oriental medicine(CAMSOM-V), quality of life questionnaire for adult Korean asthmatics(QLQAKA), and Spirometry were performed to evaluate the improvement of his symptoms. Results The clinical asthma measurement scale in oriental medicine(CAMSOM-V) improved from 16 to 14 points and the quality of life questionnaire for adult Korean asthmatics(QLQAKA) improved from 55 to 67 points. In spirometry, forced vital capacity improved from 3.07 to 3.59, and forced expiratory volume in 1sec improved from 2.59 to 2.84 after 4 weeks. Conclusion This report suggests that Mahwangjeongcheon-tang is effective for chronic bronchitis.

• Child Health Nursing Research
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• v.28 no.4
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• pp.291-298
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• 2022

Purpose: This study aimed to identify students' awareness of the use of a chatbot (A-uC), a type of artificial intelligence technology, for violence prevention among elementary school students. Methods: The participants comprised 215 students in the fourth to sixth grades in Chuncheon, South Korea, and data were collected via a self-reported questionnaire. Results: The mean A-uC score was 3.43±0.83 out of 5 points. The mean scores for the 4 sub-dimensions of the A-uC tool were 3.48±0.80 for perceived value, 3.44±0.98 for perceived usefulness, 3.63±0.92 for perceived ease of use, and 3.15±1.07 for intention to use. Significant differences were observed in A-uC scores (F=59.26, p<.001) according to the need for the use of chatbots in violence prevention education. The relationships between intention to use and the other A-uC sub-dimensions showed significant correlations with perceived value (r=.85, p<.001), perceived usefulness (r=.76, p<.001), and perceived ease of use (r=.64, p<.001). Conclusion: The results of this study suggest that chatbots can be used in violence prevention education for elementary school students.

• Journal of Food Hygiene and Safety
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• v.31 no.3
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• pp.210-215
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• 2016

This study was performed to provide basic data of Cirsium setidens Nakai by cultivars that will be applied for development of functional foods and ingredients. We assessed pectiolinarin content, total flavonoids content and antioxidant effects (DPPH radical scavenging activity and ORAC assay) of C. setidens Nakai. Our results showed that the pectolinarin and total flavonoids contents of C. setidens Nakai by cultivars ranged from $3.95{\pm}0.05$ to $7.29{\pm}0.07mg/g$ and from $40.42{\pm}0.91$ to $76.70{\pm}2.24mg$ pectolinarin equivalent (PNE)/g, respectively. Among C. setidens Nakai by cultivars, the pectolinarin content was highest in GW-D extract. Futhermore, the DPPH radical scavenging activity of C. setidens Nakai ranged from 31.25 to 81.93%, respectively. The oxygen radical absorbance capacity (ORAC) value was highest in GW-D and GW-E extracts (514.49 and $501.73{\mu}M\;TE/g$, respectively). These results suggest that C. setidens Nakai extract could be considered as a good sources of natural antioxidants and functional food ingredients.

• Food Science and Preservation
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• v.15 no.4
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• pp.606-611
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• 2008

Myungran Jeotkal, Korean fermented seafood, and its ingredients(hot red pepper powder, ginger, garlic, and seasoning mix) were irradiated with 0, 0.5, 1.0, 2.0, and 5.0 kGy of gamma rays and stored at 4C for 4 weeks to determine changes in microbiological and sensory characteristics. Water activities of Myungran Jeotkal, hot red pepper powder, ginger, garlic, and seasoning mix were 0.89 0.56, 0.98, 0.99, and 0.07, respectively. Myungran Jeotkal was observed to be initially contaminated. Total aerobic bacteria, yeast and mold, and coliform levels were 6.7, 4.3, and 3.6 log CFU/g, respectively. Irradiation at 2 kGy afforded approximately a 4 log reduction in total aerobic bacteria, and a 3 log drop in both yeast and mold levels and coliform bacteria(P<0.05). No viable microbial cells were detected in Myungran Jeotkal after 5 kGy of irradiation(at a detection limit of 101 CFU/g). The total aerobic bacterial level in red pepper powder was 6.3 log CFU/g and this component, of the tested ingredients, contributed most to the microbial contamination of Myungran Jeotkal. The initial count of total aerobic bacteria, 6.3 log CFU/g, was significantly reduced to 4.5 log CFU/g after irradiation(P<0.05). Sensory evaluation showed that gamma irradiation of up to 5.0 kGy did not adversely affect overall acceptability of Myungran Jeotkal or its ingredients during cold storage. Therefore, gamma irradiationwas effective to extend the shelf-life of Myungran Jeotkal.

• Journal of Korean Society of Environmental Engineers
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• v.22 no.6
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• pp.1045-1053
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• 2000

The adsorption and desorption of herbicides such as napropamide and pendimethalin was studied in three kinds of soil. sandy loam. silty clay and loam. The results of batch tests performed with various shaking time, pH, organic matter content and temperature in soil were summarized as follows. The shaking times reached to the equilibrium of the adsorption and desorption for napropamide and pendimethalin in soil were 12 and 6 hours. respectively. For each soil. the adsorption rates of napropamide were 23.35%. 31.57% and 25.95%, the desorption rates of them were 18.42%, 13.42% and 15.89%, respectively. And the adsorption rates of pendimethalin were 59.61%, 77.26% and 64.02%, and the desorption rates of them were 3.23%, 2.93% and 3.07%, respectively. The adsorption isotherms with the Freundlich equation showed better consistency than those with the Langmuir one. The adsorption was affected by the organic matter content when it exceed 2.0%. But if the organic matter content is below 2.0%, it was affected by the clay content. When the organic matter content is 0.95~7.45%, the adsorption coefficients ($K_{fa}$) of napropamide and pendimethalin were 1.17~2.50 and 4.74~16.08 and the desorption coefficients($K_{fd}$) of them were 5.33~34.06 and 24.25~134.00, respectively. Because of the physical adsorption between herbicide molecules and soil surface, little effect of pH variation of soils was appeared for the adsorption and desorption. Because of the solubility of herbicide is related to the temperature, the adsorption rate was decreased and the desorption rate was increased with the temperature increase, respectively.

• Applied Chemistry for Engineering
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• v.29 no.6
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• pp.682-689
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• 2018

In this paper, the stability criteria of cosmeceuticals emulsion containing Broussonetia kazinoki extracts was established using the central composite design model. As optimization conditions of the emulsification using the central composite design model, concentrations of the emulsifier and emulsion stabilizer were used as a quantitative factor while emulsion stability index (ESI) and polydispersity index (PDI) were used as a reaction value. The targeted values of ESI and PDI were estimated as over 60% and the minimum number, respectively. Optimized concentrations of the emulsifier and emulsion stabilizer were 3.73 and 3.07 wt%, respectively, from the emulsification optimization based on ESI and PDI values. The estimated reaction values of ESI and PDI were 60% and 0.585, respectively. As concentrations of the emulsifier and emulsion stabilizer increased, the stability of the emulsion prepared tended to increase. The emulsifier was one of the most influential factors for ESI than the emulsion stabilizer. On the other hand, the PDI value was similarly affected by both the emulsion and emulsion stabilizer. The ESI of the cosmeceuticals emulsion prepared under experimental conditions deduced from the central synthesis planning model showed at least about 45% of the stability. However, all of the emulsions were separated after 4 weeks from the initial preparation. When the concentration of the emulsifier was more than 3.72 wt%, the ESI value was over 60%. Also the layer separation rate decreased with increasing the emulsion stabilizer concentration.

• Journal of the Korean Society of Radiology
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• v.16 no.6
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• pp.807-813
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• 2022

In order to foster creative convergence talents in the era of the 4th industrial revolution, universities are changing from knowledge-oriented education to competency-oriented education, and the maker education program is attracting attention as a new educational method. Through maker program education, we tried to find out the level of convergence, creativity, caring, and communication competencies. A survey was conducted from May 2nd to May 13th, 2022 for 2nd and 3rd grade students in the Department of Radiology and Sports and Leisure who participated in the Maker Education Program at S University in Daegu City. Research results Convergence competency is 3.35 ± 0.78 points before maker program education, 4.37 ± 0.61 points after education, creative competency is 3.28 ± 0.78 points before maker program education, 4.07 ± 0.69 points after education, and caring competency is 3.71 ± 0.80 points before maker program education Points, 4.25 ± 0.64 points after training, and communication competency were 3.61 ± 0.70 points before maker program training and 4.16 ± 0.63 points after training. There was a statistically significant level difference in all four competencies compared with before training, and the level after training was improved (p<0.05). Through the operation of the maker education program, it was possible to see the effect of cultivating convergence, creativity, caring, and communication competencies. The maker education program can be seen as education for nurturing creative convergence talents in the era of the 4th industrial revolution, and I think that various maker education programs should be operated for more university students.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.48 no.4
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• pp.225-231
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• 2022

Objectives: This study aims to evaluate the efficacy and safety of two types of sandblasted with large-grit and acid-etched (SLA) surface implants with different surface roughness. Patients and Methods: This study was conducted based on a clinical record review of 55 patients (mean age, 53.00 years). A total of 80 SLA surface implants was placed. Among the 80 implants, 38 implants placed in 29 subjects had surface roughness (Ra) of 3.09 ㎛ (test group, TG), while the other 42 implants placed in 31 subjects had a surface roughness (Ra) of 2.50 ㎛ (control group, CG). A comparison was made of implant primary/secondary stability; success and survival rates; marginal bone loss; and soft tissue assessment including probing pocket depth (PPD), plaque index (PI), gingival index (GI), and bleeding on probing (BOP) between the groups at 1 year after implant placement. Results: Among the implants that were initially registered, 1 from the TG and 4 from the CG dropped out, leaving 37 implants in the TG and 38 implants in the CG to be traced and analyzed. Although 1 TG case showed unstable primary stability, all cases showed stable secondary stability. Success and survival rates at 1 year after implant placement were 100% in both groups. Marginal bone loss was 0.07 mm and 0.00 mm for the TG and CG, respectively, but the difference was not significant. Among the several parameters for evaluation of soft tissue, the TG showed lower PI at 1 year after implant placement (TG=0.00, CG=0.29; P=0.0004), while the remaining categories showed no significant difference between the groups. Conclusion: This study shows that the two types of SLA implants with different surface roughness have no difference in efficacy or safety. Therefore, both of the implants can be used safely and with promising outcomes.

• Journal of Animal Science and Technology
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• v.55 no.1
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• pp.67-74
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• 2013

To know the emission amount of greenhouse gases from bedding materials of cowshed floor, the emission rates of methane ($CH_4$) and nitrous oxide ($N_2O$) gases from a simulated cowshed floor (SCF) with sawdust that manure loading rate into the bedding material could be accurately controlled were assessed in this study. The manure loading rates of Korean beef and Holstein dairy cattle into the SCF of $0.258m^2$ surface area with 10 to 15 cm height sawdust were $1.586kg/m^2/d$ and $3.588kg/m^2/d$, respectively, and those were calculated on the basis of "Standard model for sustainable livestock" and "Data for excretion amount of manure from livestock". All experiments were done in triplicates in three different seasons (May to July, Sep. to Nov., and Feb. to Apr.) using 12 SCFs. The effects of bedding material thickness on $CH_4$ and $N_2O$ emission from SCFs for both Korean beef cattle and Holstein dairy cattle were not statistically significant (p<0.05). Emission amount of $CH_4$ and $N_2O$ per square meter of SCF for Holstein dairy cattle was 7.5 and 1.2 times higher than that of Korean beef cattle, respectively. The yearly $CH_4$ amount per head was 17.7 times higher in Holstein dairy cattle, obtaining 130.4 g/head/year from SCF for Holstein dairy cattle and 7.4 g/head/year from SCF for Korean beef cattle, and $N_2O$ was also 3.8 times higher in Holstein dairy cattle (3,267 g/head/year in Korean beef cattle and 14,719 g/head/year in Holstein dairy cattle). However, the $N_2O$-N per loaded nitrogen into SCF was higher in Korean beef cattle, having 0.2148 and 0.1632 kg $N_2O$-N/kg N in Korean beef cattle and Holstein dairy cattle, respectively, and those values were 3.07 and 2.33 times higher than that of Intergovernmental Panel on Climate Change (IPCC) 2006 guideline (GL) (0.07 kg $N_2O$-N/kg N).

• Journal of the East Asian Society of Dietary Life
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• v.22 no.5
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• pp.649-656
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• 2012

We investigated the quality characteristics of dohwaju (fermented with peach flowers and branches, a Korean traditional alcoholic beverage) containing different sub-ingredients. During fermentation, the inner temperatures of the added sub-ingredient treatments were higher compared to non-treatment, and only peach branches treatment. showed the highest inner temperature. There were no significant differences in the physicochemical results among the treatments. pH decreased from the first mashing day to the second and then increased slightly until fermentation was terminated. Total acidities showed opposite patterns as compared to pH level. Amino acid contents, soluble solids, and alcohol contents increased steadily until the end of fermentation, whereas reducing sugar contents showed the opposite trend. In a preference survey, DB (only peach branches)-treated dowhaju showed the highest evaluation in terms of taste and overall acceptability with walues of $5.07{\pm}1.38$ and $5.57{\pm}1.16$, respectively. Based on the results of this study, we concluded that only peach branches treatment is optimal for the manufacture of dowhaju. We expect that the quality of dowhaju can be improved by providing basic information concerning its manufacture.