• 한국식생활문화학회지
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• 제7권2호
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• pp.157-171
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• 1992

This study attempted to investigate the effect of housemaker's interest in dietary life on the knowledge of cooking principles and cooking methods, and on the daily meal management. Housemakers whose age ranged from 20 to 50 were surveyed in their residence. The results of this study were as follows. First, the level of interest in dietary life was positively related with ages, education and income levels. Moreover, housemaker who did not work or did not take care of relatives had higher level of interest in dietary life than those who did. Second, most housemakers bought foods and prepared a meal by themselves. The average time spent in preparing meals was 2 to 3 hours, and the number of side dishes cooked per day expect for the main dish was 5.46 percent of the total respondents ate out more than once a month for a 'family tie'. Third, there was no relation between the knowledge of cooking principle and the variables such as ages, education and income levels. Fourth, the level of the knowledge of cooking method about Korean traditional dishes was positively related with ages, education and income levels. In addition, housemakers who did not work or did not take care of relatives had less knowledge of Korean traditional dishes than those who did. Finally, the interest in dietary life was significantly correlated with the knowledge of cooking principle and cooking method of Korean traditional dishes.

• 한국환경과학회지
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• 제22권2호
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• pp.163-171
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• 2013

The aggregate risk assessment on xylene and ethylbenzene was carried out according to the guidance established newly in 2010 with the purpose of providing information for risk management. In human exposure assessment, the results indicated that lower ages were exposed more and that, in the interior space at home, the highest level of human exposure occurred via inhalation. At outdoor spaces, exposures via inhalation and drinking were less than 1%. In human health risk characterization, xylene showed HI(Hazard Index) < 1 in all ages. When reasonable maximum exposure(RME) was applied, HI for young children was 0.64. The HI of ethylbenzene was also below 1(0.02~0.04) in all ages, indicating no potential risk. From this study, it is considered that xylene need to be continous monitoring with interest because this substance may be more sensitive on young age group. In additon, to reduce the uncertainty of the risk assessment, the korean exposure factors on young age group such as infant, children had to be established as soon as possible.

• 생약학회지
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• 제46권3호
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• pp.250-259
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• 2015

Advanced glycation end products (AGEs) have been implicated in diabetic complications. In this study, the inhibitory effect on AGEs formation of 156 Korean herbal medicines has been evaluated. Among them, 15 Korean herbal medicines were showed to have significant effect (IC₅₀: <10 μg/ml) compared to positive reference, aminoguandine (IC₅₀: 76.47±4.81 μg/ml). Especially, four herbal medicines, Alnus firma (leaves, IC₅₀: 3.25±0.10 μg/ml), Juncus decipiens (whole plants, IC₅₀: 4.30±0.44 μg/ml), Smilax china (stems, IC₅₀: 3.55±0.21 μg/ml), and Vicia amoena (Aerial parts, IC₅₀: 4.25±0.06 μg/ml) showed more potent inhibitory activity approximately 8-24 fold) than the positive control aminoguanidine.

• 생약학회지
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• 제46권3호
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• pp.268-278
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• 2015

In this study, 80 herbal medicines from Vietnam have been investigated with an in vitro evaluation system using advanced glycation end products (AGEs) formation inhibitory activity. Of these, 10 herbal medicines (IC₅₀: <5 μg/ml) were found to have significant AGEs formation inhibitory activity. Particularly, herbal medicines Strobilanthes pateriformis (aerial parts), Rhodamnia dumetorum (twigs), Glochidion rubrum (twigs), Dipterocarpus obtusifolius (twigs), Bombax ceiba (twigs), Amesiodendron chinense (twigs), Bauhinia coccinea (twigs), Lithocarpus laouanensis (twigs), Bauhinia bracteata (twigs) and Connarus paniculatus (twigs), showed more potent inhibitory activity (approximately 16-31 fold) than the positive control aminoguanidine (IC₅₀: 76.47 μg/ml).

• 한국임상수의학회지
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• 제28권4호
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• pp.415-421
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• 2011

Currently, various diseases reside in Korean swine farms and affect production performance of the farms greatly. These damages from disease are further aggravated by the concurrent infection of other disease. In this study, y investigating the distribution of porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus type 2 (PCV2), Salmonella spp. in farms, correlation between the damage and the prevalence of disease was analyzed. Ten selected Korean swine farms that uses PCV2 vaccine were tested for presence of antibody and antigen of PRRSV, PCV2, Salmonella spp. per ages of pigs, 4weeks, 7weeks, 11weeks and 17weeks, respectively. The results were analyzed by dividing the farms in to groups with MSY above 19, and that with MSY below 19. Then calculating the distribution of disease each ages of pigs. Farms with MSY below 19 showed high prevalence of disease by PRRSV, PCV2 and Salmonella spp.. In this group, the detection rate of PCV2 and Salmonella spp. was increased by the activation/viremia of PRRSV in the young ages of pigs. The results are proved that the correlation between disease prevalence and production performance in Korean swine farms were very significant. The prevalence of PRRSV is more important index which influence to the productivity in current prevalence of diseases.

• 보존과학연구
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• 통권26호
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• pp.189-202
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• 2005

This study carried out to understand thermoluminescence dating of ancient tiles at Jinju Janghungri Kilin site. Also radiocarbon dating by the benzene synthesis method and Liquid scintillation counting method were performed for comparison for the agedetermination of charcoal sample at the obtained same site.1st and 2nd glow curve were obtained according to the typical method thermoluminescence. Plateau tests of revealed the proper temperature range to be $300~440^{\circ}C$ Palaeodose average values were formed to the 2.44Gy.Annual dose of ancient tiles was calculated from soil samples and ancient tiles it self by measuring alpha radiation dose, potassium concentrations and water contents respectively. Annual dose average values were calculated to be 7.012mGy/yr.The radiocarbon age(BP year) was converted to calibrated age(AD/BC year) using high precision curve. Radiocarbon ages were calculated to be AD 15~17 .Comparison of samples with their radiocarbon and thermoluminescence ages for revealed the in range the AD 15~17. This result means that the measured absolute ages are in good agreement with each other within the margin of error.

• 한국어류학회지
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• 제5권2호
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• pp.177-183
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• 1993

베링해 공해 및 알라스카만에서 표본된 명태의 동일 개체로부터 비늘과 이석을 사용하여 연령사정한 결과를 비교, 고찰하였다. 베링해 공해 명태 44~54cm 범위의 개체에 대한 연령사정 결과, 비늘연령은 4~9세, 이석연령은 4~18세로 나타났다. 동일개체의 두 연령형질간에 1~11세까지의 큰 차이를 보였으며, 특히 이식의 연령이 증가할수록 그 차이가 더욱 크게 나타났다. 알라스카만 명태 22~59cm 범위의 개체로부터 비늘 연령은 2~9세, 이석연령은 2~11세로 나타났다. 두 연령형질간의 연령사정 결과는 6세까지는 잘 일치하였고, 7세 이상에서는 이석에 의한 연령이 1~7세까지 높게 나타났다.

• KCI Concrete Journal
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• 제14권1호
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• pp.15-22
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• 2002

Stresses that develop due to differential shrinkage between polymer modified cement mortar (PM) and Portland cement concrete (PCC) in a repaired concrete beam at early ages were investigated. Interface delamination or debonding of the newly cast repair material from the base is often observed in the field when the drying shrinkage of the repair material is relatively large. This study presents results of both experimental and analytical works. In the experimental part of the study, development of the material properties such as compressive strength, elastic modulus, interface bond strength, creep constant, and drying shrinkage was investigated by testing cylinders and beams for a three-week period in a constant-temperature chamber. Development of shrinkage-induced strains in a PM-PCC composite beam was determined. In the analytical part of the study, two analytical solutions were used to compare the experimental results with the analytically predicted values. One analysis method was of an exact type but could not consider the effect of creep. The other analysis method was rather approximate in nature but the creep effect was included. Comparison between the analytical and the experimental results showed that both analytical procedures resulted in stresses that were in fair agreement with the experimentally determined values. It may be important to consider the creep effect to estimate shrinkage-induced stresses at early ages.

• 대한예방한의학회지
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• 제19권2호
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• pp.67-74
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• 2015

Objective : The aim of this study was to investigate fatigue-related factors including socio-demographic variables and life styles among workers in the automobile manufacturing industry. Method : The subjects were 22,937 individuals who had received health examination by Korean Medical doctors and responded to questionnaires for 8 months from March to November in 2011. The fatigue index was measured by heart rate variability (HRV) in an automobile manufacturing industry. A multivariate analysis with SPSS version 19.0 was used to examine the relationship between fatigue and other factors including ages, smoke consumption, drinking frequency, exercise frequency, occupational category, conjugal condition. Results : In comparison between normal and very bad level of fatigue, factors of ages, smoking, drinking, and exercise showed significant difference(p<0.05). In addition, when normal and bad fatigue were compared, ages, smoking, exercise also produced significant difference(p<0.05). Furthermore, in normal and good level of fatigue comparison, occupation and smoking yielded significant difference(p<0.05). Finally, in other comparisons between normal and very good fatigue, exercise, smoking and occupation revealed significant difference(p<0.05). Conclusion : The results of this study suggest that age increase affects fatigue negatively, whereas exercise and drinking of once or twice per a week can have positive correlations.

• 대한두경부종양학회지
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• 제26권1호
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• pp.33-36
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• 2010

Non-lymphoid mesenchymal neoplasms of salivary gland origin are rare, accounting for 1.4% of major salivary gland tumors. Of this group 30% were hemangiomas. Hemangiomas are the most common benign tumors in children, but are rare in old ages. 90% of hemangiomas arise in the first three decades of life. Hemangiomas are classified as capillary(including juvenile type), cavernous, or mixed in type. Salivary gland hemangioma is more common in the parotid(90%) and extremely rare in submandibular gland. We present two adult patients, 69 and 60 years of age, who were referred for palpable mass in the parotid area and submandibular area, respectively. After surgical removal of the lesion, histopathologic examination showed characteristic feature of cavernous hemangioma. The rarity of such a lesion in these locations in old ages have prompted this case report.