• Journal of Life Science
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• v.29 no.2
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• pp.152-157
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• 2019

Porphyra yezoensis is a red algal species in the genus Porphyra. The phenetics and genetic diversity of four populations of P. yezoensis in Korea were reconstructed using random amplified polymorphic DNA (RAPD) markers. Overall, 55 fragments were generated among the tested P. yezoensis array with 20 OPERON primers. A total of 30(54.5%) of these bands were polymorphic. The OPA-18-02 band was amplified in the samples of Nakdong population and absent in them of other three populations. The OPA-20-02 band was only amplified in the Seocheon population. Both bands exhibited distinctive patterns in specific populations. The effective number of alleles per locus (Ae) ranged from 1.161 to 1.293 with a mean of 1.366. The Seocheon population had a high expected diversity (0.163). The Nakdong population was an isolated endemic and intertidal zone. Thus the narrow distributed Nakdong population had a low expected diversity (0.092). Shannon's index of phenotypic diversity (I) of the Seocheon population (0.238) was the highest among all populations. Total genetic diversity ($H_T$) varied between 0.132 for OPA-02 and 0.420 for OPA-19. The interlocus variation of genetic diversity ($H_S$) was 0.059 for OPA-18 and 0.339 for OPA-19. On a per locus basis, the proportion of total genetic variation due to differences among populations ($G_{ST}$) ranged from 0.012 for OPA-11 to 0.762 for OPA-18 with a mean of 0.415, indicating that 42% of the total variation was found among these populations. In an assessment of the proportion of diversity present within this species, 58.5% (100%-41.5%) of genetic variation resided within the populations studied. The Nm was estimated to be low (0.705).

• The Korean Journal of Pesticide Science
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• v.17 no.4
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• pp.302-306
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• 2013

We report the dietary exposure to rotenone in the Korean population and children (1-18) through consumption of lettuce and cucumber. To obtain the residue data, we analyzed using the GC-NPD and HPLC-DAD method. Rotenone residues in samples were as follows; lettuce 0.16-1.15, cucumber < 0.001-0.006. The average dietary intake was determined using result from the 2009 Korea National Health and Nutrition Examination Survey Data. The risk index (RI) was calculated using rotenone residues and dietary intakes. The lettuce and cucumber showed the highest at 18.41%, 0.00, respectively. RI fell below 100 of %RfD showing no risks in these vegetables. Therefore, the risk assessment on the detected rotenone was evaluated as safe level.

• Korean Journal of Environment and Ecology
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• v.34 no.5
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• pp.372-395
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• 2020

This study aimed to elucidate the distribution of vascular plants in Mt. Goryeo in Ganghwa-gun, Korea. The results of 14 field surveys from March 2018 to August 2019 identified 629 total taxa, representing 568 species, 10 subspecies, 45 varieties, two forms, and four hybrids in 371 genera and 112 families. The plant formation of Mt. Goryeo is the deciduous broad-leaved and conifer mixed forest, which is the common one in the middle part of the Korean Peninsula. Most parts of the mountain are covered with a young secondary forest, mainly composed of Quercus and Pinus spp. Out of the 629 taxa, 314 were first recorded in the region, six were endemic to Korea, four were listed on the Korean Red List of threatened species, 63 were floristic target plants, and 58 were invasive alien plants. The percentages of the naturalized index (NI) and urbanization index (UI) were 9.2% and 15.5%, respectively. The area showed a high plant diversity with many rare plants and phytogeographically important plants. This study discussed in detail conservation strategies to ensure biodiversity and effective management of Mt. Goryeo. The study results can be used as the reference for the preparation of biodiversity conservation and the establishment of management measures.

• Journal of Korean Biological Nursing Science
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• v.12 no.1
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• pp.39-47
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• 2010

Purpose: The purpose of this study was to investigate the health status, nutritional status, and nutrient intakes of Korean female elderly who are members of a local church in Seoul, Korea. Methods: The subjects were 59 female who are aged >65 yr. We investigated the nutritional status of the subjects using anthropometric and biochemical measurements. Interview was conducted to obtain the information regarding the health status. We also obtained dietary intake of these subjects to figure out the nutrient intakes. Results: The mean age of the subject was 74.0 yr old. Based on the WHO standard (obesity, body mass index, BMI ${\qeq}25$), we categorized the subjects to the obese and the non obese groups. The number of subjects in the obese group was 34 (57.6%). The mean Diastolic BP (p=.002), BMI (p<.001), waist circumference (p<.001), hip circumference (p<.001), blood level of transferrin (p=.038), and nutrient intakes of calcium (p=.026), potassium (p=.046), folate (p=.038) and vitamin E (p=.031) were higher in the obese group than in the non obese group. The subjects with hypertension was 67.5%. The presence of hypertension was correlated with BMI (p<.05). The number of subjects with hypercholesterolemia was 17 (28.8%). The level of cholesterol was correlated with BMI (p<.05) and wasit/hip ratio (p<.05). Conclusion: The female elderly in our study had higher prevalence of obesity which is a risk factor for hypertension and hypercholesterolemia. The nutrient intake of high sodium, high cholesterol, and low dietary fiber of these subjects suggests that there is an urgent need to develop an well planned nutritional education program for female elderly.

• Economic and Environmental Geology
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• v.34 no.3
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• pp.283-299
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• 2001

The middle cover soils and clay liners collected from the Kumheung landfill in Gongiu City were analysed for As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sr, Ti and Zn concentrations using 0.] N HCl digestion and total/sequential extraction experiments followed by ICP-AES determination. The uncontaminated soil and sediment samples were also analyzed for the comparison. The results of sequential extraction showed that Cu was dominant in the oxidizable fraction, and As, Ni, Sr, Ba, and Mn were in the exchangeable fraction. Zinc and Mn occurred mostly in association with reducible, residual and carbonate fractions. Most of Cd and Pb were bound to the reducible and oxidizable fractions. The main carrier of Co, Cr, Fe and 11 was the residual fraction and another important carrier was the reducible fraction. The percentage of the metals of organically-bound form in the middle cover soils and clay liner was in the order of Cu(48%) > Ti(42%) > Pb(27%) > As(25%) > Cd(20%). As deduced from sequential extraction analysis, potential order of metal mobility in the middle cover soils and clay liner from the landfill was proposed: Cd > Sr > As > Ni > Mn > Ba > Cu > Pb > Zn » Co > 11 > Fe > Cr. Based on the 'geoaccumulation index' and the 'enrichment factor' normalized to A], the level of contamination of Cu, Ni and C1' was significant in the samples from Kumheung landfill and surrounding farmland. Their enrichments were attributed partly to anthropogenic pollutions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.11
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• pp.209-218
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• 2020

This study examined the sexual function, sexual distress, and quality of life of middle-aged women with osteoarthritis, as well as the factors influencing the quality of life. The participants were 121 middle-aged women who have been suffering osteoarthritis. Data collection was conducted from September 1 to October 31, 2019. The instruments were the Female Sexual Distress Scale (FSDS), the Female Sexual Function Index (FSFI), and the World Health Organization Quality of Life Assessment Instrument (WHOQLO) -BREF scale. Data were collected with structured questionnaires and analyzed using a t-test, ANOVA, Pearson's correlation analysis, and multiple regression analysis. A positive correlation was observed between sexual function and quality of life, whereas sexual distress had a negative correlation between sexual function and the quality of life. Factors affecting the quality of life of middle-aged women with osteoarthritis were sexual function, sexual distress, which explained 16.1%. Sexual distress, sexual function, and quality of life showed a correlation. Therefore, it is important to develop a nursing intervention that can improve the sexual function and reduce the sexual distress of middle-aged women with osteoarthritis to improve their quality of life.

• Journal of Preventive Medicine and Public Health
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• v.39 no.3
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• pp.235-242
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• 2006

Objectives: We wanted to determine the distribution of the clustering of the metabolic risk factors and we wanted to evaluate the related factors in young schoolchildren. Methods: A cross-sectional study of metabolic syndrome was conducted in an elementary school in Seoul, Korea. We evaluated fasting glucose, triglyceride, HDL cholesterol, blood pressures and the body mass index, and we used parent-reported questionnaires to assess the potential risk factors in 261 children (136 boys, 125 girls). We defined the metabolic risk factors as obesity or at risk for obesity ($\geqq$ 85th percentile for age and gender), a systolic or diastolic blood pressure at $\geqq90th$ percentile for age and gender, fasting glucose at $\geqq110mg/dl$, triglyceride at $\geqq110mg/dl$ and HDL cholesterol at $\leqq40mg/dl$. Results: There were 15.7% of the subjects who showed clustering of two or more metabolic risk factors, 2.3% of the subjects who showed clustering for three or more risk factors, and 0.8% of the subjects who showed clustering for four or more risk factors. A multivariate analysis revealed that a father smoking more than 20 cigarettes per day, a mother with a body mass index of = $25kg/m^2$, and the child eating precooked or frozen food more than once per day were associated with clustering of two or more components, with the odds ratios of 3.61 (95% CI=1.24-10.48), 5.50 (95% CI=1.39-21.73) and 8.04 (95% CI=1.67-38.81), respectively. Conclusions: This study shows that clustering of the metabolic risk factors is present in young schoolchildren in Korea, with the clustering being associated with parental smoking and obesity as well as the child's eating behavior. These results suggest that evaluation of metabolic risk factors and intervention for lifestyle factors may be needed in both young Korean children and their parents.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.19 no.1
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• pp.121-133
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• 2016

It was required to evaluate ecological restorations in a comprehensive way in order to systematically manage conservation areas such as DMZ and national parks in South Korea. In this research we developed a new approach to evaluating ecological restorations with more various indexes than vegetation covering-related indexes. By analyzing damaged areas in the vicinity of DMZ, major damaged types were identified as six classes: landform modification, surface loss, soil pollution, soil physio-chemical modification, vegetation decline and vegetation damaged. From literature review, 39 indexes were selected and were grouped into four divisions: soil property, vegetation growth & structure, habitat property and landscape structure & functions. By conducting a survey with the selected indexes targeting relevant experts, data on relative importance among the divisions and indexes by damaged type were collected. As a result, it was found that the orders and values of weighted values of the divisions were different by damaged type: for example, soil property (0.402), vegetation growth & structure (0.209), habitat property (0.225), landscape structure & function (0.163) for "landform modification"; but soil property (0.171), vegetation growth & structure (0.401), habitat property (0.270), landscape structure & function (0.158) for "vegetation decline". Similarly, evaluation indexes showed different orders and values of relative importance, easiness in field measurement and representativeness for the division by damaged type, and the values were used for calculating importance factor for each index. In the evaluation table, score1 and score2 were made by the importance factors of indexes multiplied by distribution values which present grades and by the weighted values of divisions. In conclusion, while dealing with the damaged type was considered significant for evaluating and managing restorations, further tests on this table with a range of cases were needed to improve its quality.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.42 no.3
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• pp.276-283
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• 2009

Enrichment in nutrients coming from urban sewage outfalls can lead to eutrophication in coastal areas, which can also change the species composition and community structure of macro algal communities. We investigated the structure of the macro algal community within three rocky shores in order to assess any possible differences in their characteristics. Site 1 was located near Tongyeong city's sewage outfall, Site 2 was located near a public beach area, and Site 3 faced open channel of the Ocean. All three sites were located within the same stretch of the coast, where Site 2 was located between sites 1 and 3. We measured the nutrient concentration in water and the tissue nitrogen content in macro algae samples. Nutrients in the water column surrounding site 1 were high in ammonium ($30.2\pm1.8{\mu}M$), nitrate ($26.2{\pm}0.1{\mu}M$), and phosphate ($2.7{\pm}0.1{\mu}M$) content, and were characterized by low numbers of macroalgal species and species and a low species diversity index. In contrast, site 3 exhibited relatively low nutrient concentration levels and a high number of macroalgal species and a high species diversity index. Comparative analysis showed that the tissue nitrogen content of macroalgae were significantly (P<0.05) affected by the nutrient concentration in the water column. The tissue nitrogen content of green algae within site 1 was higher than the others sites. However, the tissue nitrogen content of brown algae was similar at all three sites. Thus, the tissue nitrogen content of macro algae and the macro algal community structure of intertidal rocky shores were dependent on location and the performance of macroalgal communities was dependent on water quality.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.5920-5925
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• 2012

The purpose of the study is to investigate the factors affecting the quality life of oral health according to the knowledge and behavior related with oral health and childcare teachers. Total 205 childcare teacher who working in Busan participated in this survey. The knowledge on oral health has an effects on oral health practice with ${\gamma}$=.155 and t=2.539 but this doesn't show meaningful effects on dietary pattern. Oral health is not affected by oral health practice with ${\beta}$=-.001, t=-.008 but dietary patterm has an effects on oral health impact profile with ${\beta}$=.172, t=2.560. Oral health impact profile show meaningful effects on total health index with ${\beta}$=.582, t=10.275. The results show that the oral health program for childcare teacher should be developed to prevent oral disease and oral health impact profile should be improved for not only childcare teachers but also children.