• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.6
• /
• pp.3751-3758
• /
• 2014

This study was designed to evaluate the effects of arthritis and comorbid chronic conditions on the health-related quality of life (HRQoL) in the Korean older population. The study subjects were 2,708 Korean adults aged 65 and older from the $3^{rd}$ Korea National Health and Nutrition Examination Surveys data: 1,357 persons with a single chronic condition, such as arthritis, herniations of the intervertebral disc, osteoporosis, asthma, peptic ulcers, stroke, or cataract; 886 persons with arthritis and a second chronic condition described above; and 465 persons with no chronic condition. An analysis of covariance was performed to compare the EQ-5D index among the groups. The effects of arthritis, second chronic condition and their interactions were analyzed by multiple linear regression analysis. The results are as follows. Compared to men with arthritis only, men with stroke only, stroke and arthritis, or cataract and arthritis had a lower age adjusted EQ-5D index. Women with a stroke only, asthma only, cataract only, osteoporosis and arthritis, peptic ulcer and arthritis, stroke and arthritis, or cataract and arthritis had a lower age adjusted EQ-5D index than women with arthritis only. Arthritis and comorbid conditions had additive effects on the HRQol in both genders except for arthritis and stroke in women. In conclusion, comorbid chronic medical conditions in older people with arthritis may reduce the HRQoL in an additive manner.

• Journal of dental hygiene science
• /
• v.15 no.4
• /
• pp.480-487
• /
• 2015

The purpose of this study was to examine the association between oral health status and health related quality of life (HRQoL). The study used a nationally representative sample of Koreans (2013 Korea National Health and Nutrition Examination Survey) aged 19~64 years (n=3,252). Dependent variable was HRQoL, which was assessed with each component of EuroQol-5 dimension (EQ5D). Independent variable was oral health status (oral pain, chewing problem, speaking problem, and perceived oral health). After adjustment for confounders (socio-demographic factors, oral health behaviors, health behaviors, and physical conditions), the risk of having poor HRQoL was greater in adults with poor oral health status. The odds ratio (OR) of having pain/discomfort were 1.50 (95% confidence interval [CI], 1.22~1.86) for respondents with oral pain, 1.72 (95% CI, 1.33~ 2.22) for respondents with chewing problem, 1.79 (95% CI, 1.22~2.62) for respondents with speaking problem, and 1.36 (95% CI, 1.09~1.70) for respondents with poor perceived oral health. The OR of having anxiety/depression were 1.74 (95% CI, 1.28~2.38) when having a chewing problem, 1.72 (95% CI, 1.12~2.64) when having a speaking problem, and 1.54 (95% CI, 1.14~2.08) when rating his/her oral health poor. Among Korean adults, two of the EQ5D components were associated with oral health status. Future study is needed to examine the detailed causal relations between oral health status and HRQoL longitudinally.

• Journal of Animal Environmental Science
• /
• v.17 no.sup
• /
• pp.1-6
• /
• 2011

Korean Government announced 'The Roadmap to realize a low carbon green society on year 2020' on July 12, 2011 in order to mitigate greenhouse gas (GHG) emissions. Non-energy category of Food, Agriculture, Forestry and Fishery (FAFF) should mitigate 1,349 kilo $CO_2$-equivalent ($CO_2$-eq.) tonnes which is 7.1% of Business-As-Usual on year 2020. The mitigation from animal manure treatment system (AMTS) comprises ca. 45% of the total mitigated amount of Non-energy category of FAFF. Hence, the precise evaluation of GHG emissions from AMTS is important to find effective mitigation measures. Life cycle assessment was used to evaluate GHG emissions from AMTS. The most GHG emitter was a composting/liquid fertilizer/activated sludge system (1,649.45 kg $CO_2$-eq./head/year) and the least GHG emitter was a activated liquid fertilizer system (1,024.46 kg $CO_2$-eq./head/year). Thermophilic oxic process showed the highest ratio (34.9%) of GHG emissions by the use of electricity to total GHG emissions from systems. Energy efficiency should be considered to mitigate GHG emissions from AMTS.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.12
• /
• pp.581-588
• /
• 2017

This study was conducted to determine which factors would predict metabolic syndrome (MetS) perception and exercise by applying a machine learning classifier, or Extreme Gradient Boosting algorithm (XGBoost) from July 2014 to December 2015. Data were obtained from the Korean Community Health Survey (KCHS), representing different community-dwelling Korean adults 19 years and older, from 2009 to 2013. The dataset includes 370,430 adults. Outcomes were categorized as follows based on the perception of MetS and physical activity (PA): Stage 1 (no perception, no PA), Stage 2 (perception, no PA), and Stage 3 (perception, PA). Features common to all questionnaires for the last 5 years were selected for modeling. Overall, there were 161 features, categorical except for age and the visual analogue scale (EQ-VAS). We used the Extreme Boosting algorithm in R programming for a model to predict factors and achieved prediction accuracy in 0.735 submissions. The top 10 predictive factors in Stage 3 were: age, education level, attempt to control weight, EQ mobility, nutrition label checks, private health insurance, EQ-5D usual activities, anti-smoking advertising, EQ-VAS, education in health centers for diabetes, and dental care. In conclusion, the results showed that XGBoost can be used to identify factors influencing disease prevention and management using healthcare bigdata.

• Journal of Korean Society for Atmospheric Environment
• /
• v.20 no.3
• /
• pp.381-396
• /
• 2004

In order to understand the precipitation acidity and chemical composition of ion species in Iksan area as well as to know the difference of chemical characteristics in precipitation samples from the viewpoint of precipitation sampling method, precipitation samples were collected by wet-only automatic precipitation sampler and bulk manual precipitation sampler in Iksan, from March 2003 to August 2003. The mean pH of precipitation was 5.0. There was a little significant difference in the mean value of pH between automatic and manual sampler. However, pH values of some precipitation samples were lower in automatic sampler than in manual sampler, especially in case of precipitation samples with small rainfall for March 2003. The mean concentrations of each ions in precipitation were generally a little higher in precipitation samples collected by the manual sampler than in those collected by the automatic sampler because of accumulation of dry deposition on the surface of glass funnel installed at the manual sampler during the sampling period or no rainfall. Dominant species determining the acidity of precipitation, were N $H_4$$^{[-10]}$ and nss-C $a^{2+}$ for cations and nss-S $O_4$$^{2-}$ and N $O_3$$^{[-10]}$ for anions. The mean concentration of N $H_4$$^{+}$ and nss-C $a^{2+}$ were 31 $\mu$eq/L and 9 $\mu$eq/L for the automatic sampler and 40 ueq/L and 16 ueq/L for the manual sampler, respectively. In addition, nss-S $O_4$$^{2-}$ and N $O_3$$^{[-10]}$ were 27 $\mu$eq/L and 13 $\mu$eq/L for the automatic sampler and 32 $\mu$eq/L and 17 $\mu$eq/L for the manual sampler, respectively. Although the concentrations of the acidifying ions of nss-S $O_4$$^{2-}$ and N $O_3$$^{[-10]}$ were about 3 times higher than those for foreign pristine sites, precipitation acidity were estimated to be natural due to the neutralization reaction of the alkaline species of N $H_4$$^{+}$ and nss-C $a^{2+}$ with its higher concentrations. Considering the ratios of nss-S $O_4$$^{2-}$/N $O_4$$^{[-10]}$ nss-S $O_4$$^{2-}$, it was found that ammonium sulphate was dominant in Iksan precipitation. The major non-sea salt ions were maximum concentrations for March, but decreased with increasing of precipitation amount.on amount.

• Journal of Acupuncture Research
• /
• v.35 no.4
• /
• pp.193-199
• /
• 2018

Background: The purpose of this study was to investigate electric moxibustion on patients with back pain caused by road traffic accidents. Methods: This was a retrospective study (n = 112) comparing treatment with Korean medicine combined with electric moxibustion (n = 56), and Korean medicine alone (n = 56). Patient gender, age, Numeric Rating Scale (NRS), Oswestry Disability Index (ODI) and EuroQol-5 Dimension (EQ-5D) was recorded for each group at the time of hospital admission. Mean NRS measured weekly, mean ODI and EQ-5D scores were measured 2 weeks post-treatment, and evaluated by paired sample t test. using the Statistical Program for Social Science v. 25.0 for Windows. An independent, two-sample t test was used to test for a significant difference in the decrement of NRS, ODI and increment EQ-5D scores between groups. Results: NRS scores decreased in both groups after 1 week of treatment (electric moxibustion, from $5.13{\pm}0.79$ to $3.86{\pm}0.67$; Korean medicine alone, from $5.18{\pm}0.92$ to $4.30{\pm}0.94$; both p < 0.001). There was a significantly greater reduction in NRS score in the electric moxibustion group ($1.27{\pm}0.59$) than in the Korean medicine alone group ($0.88{\pm}0.61$; p = 0.001). After 2 weeks of treatment, EQ-5D scores increased significantly in the moxibustion group ($0.19{\pm}0.12$) compared with the Korean medicine alone group ($0.13{\pm}0.20$; p = 0.043). After 2 weeks of treatment, NRS and ODI scores decreased in both groups. EQ-5D increased in both groups. Conclusion: We suggest that electric moxibustion treatment may be effective for reducing early-stage back pain in patients with road traffic accident injuries.

• Korean Journal of Environmental Biology
• /
• v.22 no.3
• /
• pp.419-425
• /
• 2004

Two different groups (30 and 60 inds.) of olive flounder (Paralichthys olivaceus) were abruptly (within 30 min) exposed to hypo-salinities from seawater (SW, 35$\textperthousand$) to freshwater (FW, 0$\textperthousand$) (30FW and 60FW) and to 35$\textperthousand$ (30SW and 60SW) in a flow through seawater culture systems. Analysis of plasma samples showed the following significant increase at 0$\textperthousand$: cortisol from $2.8\;ng\;mL^{-1}$ to $66.9\;ng\;mL^{-1}$ (30FW) and from $2.7\;ng\;mL^{-1}$ to $314.1\;ng\;mL^{-1}$ (60FW) after 24 hours of exposure; glucose from $15.8\;mg\;dL^{-1}$ to $257.7\;mg\;dL^{-1}$ after 3 hours exposure and to $164.0\;mg\;dL^{-1}$ after 24 hours in 60FW. Plasma $Na^+$ concentration of 30FW and 60FW were decreased until 24 hours after expose. However that in 30SW and 60SW showed no significant differences. Plasma $Cl^-$ concentration of 60FW was decreased from $59.0\;mEq\;L^{-1}$ to $43.5\;mEq\;L^{-1}$ and to $30.0\;mEq\;L^{-1}$ after 3 and 24 hours of exposure, respectively. At all experimental groups, survival were 100% until 24 hours.

• Korean Journal of Food Science and Technology
• /
• v.45 no.1
• /
• pp.34-39
• /
• 2013

This study was performed to investigate the antioxidant activity of mung beans with heat treatment at $130^{\circ}C$ for 2 h after acid hydrolysis. The browning index of heating after hydrolysis was 2.31 whereas heating before hydrolysis was 0.17. 5-hydromethyl-2-furaldehyde (5'-HMF) content was the highest value of 81.61 mg/g in heating after hydrolysis. The highest total polyphenol content (55.95 mg/g) occurred in heating after hydrolysis and this value was 6.4-fold higher than that of heating before hydrolysis (8.79 mg/g). 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical scavenging activity was the highest value of 22.19 mg AA eq/g sample in heating after hydrolysis whereas heating before hydrolysis was 1.75 mg AA eq/g sample.1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity was the highest value of 3.64 mg Trolox eq/g sample in heating after hydrolysis whereas heating before hydrolysis was not shown. These results suggest that heat treatment of mung beans for increasing the antioxidant activity could be effective after hydrolysis.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.20 no.5
• /
• pp.479-482
• /
• 1991

The medical use of Acer mono MAX. and Betula costata T. sap has had the long history in Korea. So the mineral and sugar contents of these sap gathered in Mt. Jiri area at spring were analyzed to investigate the scientific base of folk remedies by using ion liquid chromatography and high performance liquid chromatography. The values of chlorine and sulfate in Acer mono MAX. were 11.5 mg/l and 176.7 mg/l, and in Betula costata T. 26.5 mg/l and 162.4 mg/l, respectively. The values of potassium, sodium, calcium and magnesium in Acer mono MAX. were 67.9 mg/l, 5.6 mg/l, 73.8 mg/l and 4.5 mg/l, and in Betula costata T. were 152.1 mg/l, 9.7 mg/l, 39.2 mg/l and 5.7 mg/l, respectively. The values of copper, zinc and manganese in Acer mono MAX. were 0.057 mg/l, 0.483 mg/l and 5.071 mg/l, and copper, zinc, mangances and iron in Betula costata T. were 0.038 mg/l, 1.584 mg/l, 4.354 mg/l and 2.511 mg/l, respectively. The values of sucrose in Acer mono MAX. were 27.29 mg/l, glucose and fructose in Betula costata T. were 0.97 g/l and 3.05 g/l, respectively.

• Journal of the Korean Society for Railway
• /
• v.15 no.3
• /
• pp.286-293
• /
• 2012

Korean government is enforcing 'Greenhouse gas target management' in order to achieve Greenhouse gas reduction target. To attain Greenhouse gas reduction target, companies in Korea must establish their GHG inventory system and analysis their GHG emissions characteristics for deduction of mitigation measures. LMDI(Log Mean Divisia Index) decomposition analysis is widely used to understand characteristics of GHG emission and energy consumption. In this paper, the characteristics of GHG emission from the line of railroad in Korea is respectively analyzed in terms of conversion effect, intensity effect, production effect and distance effect. Data of railroad GHG emission from 2000 to 2007 are used. As a result, total effect of railroad's GHG emission is $96,813tCO_2eq$. Production effect ($39,865tCO_2eq$) and distance effect ($327,923tCO_2eq$) affect increase of railroad GHG emissions while Conversion effect ($-158,161tCO_2eq$) and intensity effect ($-112,814tCO_2eq$) influence decrease of the emissions.