• Journal of the Korean Society of Safety
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• v.34 no.1
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• pp.34-39
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• 2019

Flash point is the important indicator to determine fire and explosion hazards of liquid solutions. In this study, flash points of n-propanol+n-hexanol and n-butanol+n-hexanol systems were obtained by Seta flash tester. The methods based on UNIFAC equation and multiple regression analysis were used to calculate flash point. The calculated flash point was compared with the experimental flash point. Absolute average errors of flash points calculated by UNIFAC equation are $2.9^{\circ}C$ and $0.6^{\circ}C$ for n-propanol+n-hexanol and n-butanol+n-hexanol, respectively. Absolute average errors of flash points calculated by multiple regression analysis are $0.5^{\circ}C$ and $0.2^{\circ}C$ for n-propanol+ n-hexanol and n-butanol+n-hexanol, respectively. As can be seen from AAE, the values calculated by multiple regression analysis are noticed to be better than the values by the method based on UNIFAC eauation.

• Journal of Korean Academy of Nursing
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• v.49 no.2
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• pp.161-170
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• 2019

Background: Quality ratings could provide vital information to help people in choosing a nursing home. Purpose: This study investigated factors aligned with quality ratings of nursing homes. Methods: We employed a cross-sectional descriptive design to assess publicly available data on 1,354 nursing homes with 30 or more beds in the Republic of Korea. After excluding 289 nursing homes with no reported quality-evaluation ratings, we analyzed the 2015 data of 1,065 nursing homes. To prevent multicollinearity among independent variables, we carefully selected the final set of variables based on clinical and theoretical meaningfulness to direct nursing care. Quality, the ordinal outcome, was scored from 1 to 5 with a higher score indicating higher quality of the organization. We constructed a multivariate ordered logistic regression model. Results: Higher quality ratings of nursing homes was significantly related to the number of unoccupied beds (OR=0.99, p=.024), registered nurses (RNs) (OR=1.30, p=.003), qualified care workers (OR=1.03, p=.011), cognitive-improvement programs (OR=1.05, p=.024), and other programs for residents' activities (OR=1.09, p<.001). Conclusion: The number of RNs had the strongest influence on the publicly reported quality rating, while the rating of qualified care workers demonstrated little effect and that of nursing assistants had no effect. The number of RNs could be used as a crucial indicator for high-quality homes; more resident-engaging programs also demonstrated better quality of nursing home care.

• Korean Journal of Clinical Laboratory Science
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• v.49 no.4
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• pp.345-349
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• 2017

Diabetes mellitus is associated with a variety of adverse health outcomes, including metabolic syndrome and cardiovascular diseases. Recently, diabetes has been receiving increased scientific attention because of the rapid increase in the diabetic population. One of the features of type-2 diabetes mellitus is an elevated glucose level in blood. Fasting glucose level, which is the most basic test, is widely used as a diagnostic indicator of diabetes. Several previous studies reported that TLR4 expression is relatively high in the heart. However, few studies have investigated the association between TLR4 variants and fasting blood glucose to date. Thus, this study tested the association between single nucleotide polymorphisms (SNPs) in the TLR4 gene and fasting glucose in the Korean population. A total of 994 subjects recruited from Seoul were used for the present study. When compared to fasting blood glucose, the TLR4 gene region was shown as a linkage disequilibrium owing to the relatively large gene range. This region also presented as several LD blocks. We found that specific SNPs in the TLR4 gene were associated with the mean fasting glucose (p<0.01). The minor allele frequency of rs1329067 was 16.4%, and individuals with the AA genotype had a higher fasting blood glucose level than those with the GG genotype, suggesting that genetic variants in TLR4 influence glucose levels in Korean adults.

• The Journal of Internal Korean Medicine
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• v.40 no.3
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• pp.369-389
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• 2019

Objectives: This study aimed to analyze the correlation between Ryodoraku diagnosis and three pattern identification questionnaires, namely, Spleen Qi Deficiency, Stomach Qi Deficiency, and Food Retention in functional dyspepsia (FD) patients. Methods: Forty FD patients who met the Rome IV diagnostic criteria for FD participated in this study. The Ryodoraku test was conducted, and three pattern identification questionnaires were filled up by all patients. The average Ryodoraku score was called total average (TA), and the scores on the Ryodoraku points were measured. The degree of Spleen Qi Deficiency, Stomach Qi Deficiency, and Food Retention was assessed by Spleen Qi Deficiency questionnaire (SQDQ), Scale for Stomach Qi Deficiency pattern (SSQD), and Food Retention Questionnaire (FRQ). Results: The TA scores in the SQDQ patient group were lower than those in the SQDQ control group (p=0.091). The TA scores in the SSQD patient group were higher than those in the SSQD control group (p=0.651). The TA scores in the FRQ patient group were lower than those in the FRQ control group (p=0.851). The scores on the LH5, RH5, and RH6 points were significantly lower in the SQDQ patient group than in the SQDQ control group. However, no significant difference was found in the Ryodoraku scores among the other groups. Conclusions: The results suggest that the low TA and low Ryodoraku scores on the LH5, RH5, and RH6 points could be a quantitative indicator to diagnose Spleen Qi Deficiency in FD patients in a simpler manner. Larger studies on the Ryodoraku test in FD patients, the health control group, and other pattern identification groups are required.

• Korean Journal of Health Education and Promotion
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• v.25 no.2
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• pp.47-59
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• 2008

Objectives: The objective of this study was held for prevention of coronary artery disease and improvement of health of local community residents by classifying the obesity types of their waist circumference and BMI, and appraising the coronary artery disease risk factors(CRF). Methods: We analyzed the data on the 1,914 adult cases (1,156 male and 758 female) during Nov, 2006 to Mar. 2007 on a general hospital in Daegu city, Korea. The obesity types in this research were classified into normal group, seeming obesity group, abdominal obesity group and obesity group. Also, CRF was classified by normal, mild, moderate, and severe, and each class was given the index from 0 to 3. The coronary artery disease risk factors index(CRFI) was defined as the sum of index, and we defined that if the sum is higher, higher chance of coronary artery disease risk exist. Results: According to the research, by the age group, normal group has higher percentage in age 30 to 40, and obesity group and abdominal obesity group has higher percentage in age 50 to 60. CRFI is increased by order of normal group, seeming obesity group, abdominal obesity group, and obesity group on both male and female groups, and male shows higher index than female on all four groups. CRFI will be influenced by order of obesity group, seeming obesity group, and abdominal obesity group on male, and obesity group, abdominal obesity group, and seeming obesity group on female according to the result of multiple regression between obesity type and CRFI. Conclusion: According to the result from our research, we have to have keen attention to not only seeming obesity group and obesity group, but also abdominal obesity group which has normal waist circumference influence to CRFI. So, those kinds of indexes have to be controled by controling their weight. Also, we believe that health behaviour can improve and CRF can be prevented by the early health care and early health education to those with no abnormal indication on clinical indicator but with abnormal BMI and waist circumference.

• Korean Journal of Veterinary Service
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• v.45 no.1
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• pp.19-30
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• 2022

In this study, a simple loop-mediated isothermal amplification (LAMP) combined with visual detection method (vLAMP) assay was developed for the rapid and specific detection of African swine fever virus (ASFV), overcoming the shortcomings of previously described LAMP assays that require additional detection steps or pose a cross-contamination risk. The assay results can be directly detected by the naked eye using hydroxynaphthol blue after incubation for 40 min at 62℃. The assay specifically amplified ASFV DNA and no other viral nucleic acids. The limit of detection of the assay was <50 DNA copies/reaction, which was ten times more sensitive than conventional polymerase chain reaction (cPCR) and comparable to real-time PCR (qPCR). For clinical evaluation, the ASFV detection rate of vLAMP was higher than cPCR and comparable to OIE-recommended qPCR, showing 100% concordance, with a κ value (95% confidence interval) of 1 (1.00~1.00). Considering the advantages of high sensitivity and specificity, no possibility for cross-contamination, and being able to be used as low-cost equipment, the developed vLAMP assay will be a valuable tool for detecting ASFV from clinical samples, even in resource-limited laboratories.

• Nutrition Research and Practice
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• v.7 no.1
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• pp.49-58
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• 2013

The most critical point in the assessment of adherence to dietary guidelines is the development of a practical definition for adherence, such as a dietary pattern score. The purpose of this study was to develop the Korean Diet Score (KDS) based on the Korean Food Balance Wheel and to examine the association of KDS with various lifestyle characteristics and biochemical factors. The dietary data of 5,320 subjects from the 4th Korean National Health and Nutritional Examination Survey were used for the final analysis. The food guide was composed of six food group categories; 'grain dishes', 'fish and meat dishes', 'vegetable dishes', 'fruits', 'milk' and 'oils and sugars'. Based on the recommended serving numbers for each group, the scores measuring adherence to this food guide were calculated from the dietary information from the 24-hour dietary recall questionnaire, and then its correlation with various characteristics was assessed. KDS was significantly associated with several clinical, lifestyle and socioeconomic factors as well as diagnosed disease history. The higher quintile group of KDS showed a significantly lower level in fasting blood glucose, systolic blood pressure, triglycerides, current smoking and drinking as well as higher leisure time activity, house income and education. Furthermore, the KDS quintile group of women was inversely associated with hypertension, osteoporosis and diabetes. A higher KDS quintile was characterized with a higher intake of several critical nutrients, such as Ca, Fe and vitamins as well as a desirable nutrition balance such as the ratio of macronutrients. Our results demonstrate that KDS is a beneficial tool in assessing the adherence to a healthy diet based on the Korean dietary guidelines. We suggest that KDS could be a useful indicator for evaluating the dietary balance of the Korean population.

• Journal of Korean Clinical Nursing Research
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• v.28 no.3
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• pp.242-250
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• 2022

Purpose: This study was conducted to evaluate the performance following the application of the pilot program for the education nurse system of the Ministry of Health and Welfare in a medical institution. Methods: This study was employed a non-homogeneous comparative group design by comparing new nurses who entered the medical institution after the pilot project from December 2019 to April 2020 with new nurses who entered before the pilot project during the same period. Satisfaction, academic achievement, job adaptation, personal turnover within one year, and patient safety incident rate were investigated as performance indicators. Results: After the pilot project, the overall satisfaction among new nurses, preceptors, and fellow nurses increased, but there were no significant changes in academic achievement and job adaptation in new nurses. The personal turnover rate decreased from 15.6% to 9.1%, and the patient safety incident rate also decreased from 26.3% to 15.7%. Also, the preceptor overtime also decreased from 3.67 to 0.66 hours. Conclusion: The performance of the pilot project for the education nurse system was related to improvements in satisfaction, turnover rate of new nurses, patient safety incident rate, and preceptor overtime. Above all long-term monitoring of each performance indicator is necessary through the continuation of the education nurse system of the Ministry of Health and Welfare.

• Journal of the Korean Society of Radiology
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• v.16 no.7
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• pp.943-952
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• 2022

As a test for diagnosing fatty liver, recently, ultrasound and blood exam are being performed simultaneously. In particular, in the case of high-sensitivity C-reactive protein in blood exam, it is used as an index indicating the level of inflammation in various parts of the body as well as cardiovascular diseases. Thus, this study was conducted to analyze the association between metabolic syndrome components, liver function, and high-sensitivity C-reactive protein levels according to the degree of nonalcoholic fatty liver, and use it as a clinical indicator for fatty liver diagnosis. Metabolic syndrome components, liver function and high-sensitivity C-reactive protein blood test values analyzed from 1,139 men and women over 20 years of age with nonalcoholic fatty liver in abdominal ultrasonography from March 2021 to August 2021 at the Korea Association of Health Promotion, Gwangju-Jeonnam Branch. Analyzed for all men and women, the blood test values for subjects with mild fatty liver were AST 30 U/L, ALT 32.1 U/L, γ-GTP 41.2 IU/L, and hs-CRP 0.14 mg/dL. These values were lower than the blood test values of subjects with moderate fatty liver (AST 38 U/L, ALT 47.6 U/L, γ-GTP 54.9 IU/L, hs-CRP 0.22 mg/dL) and was statistically significant (p<0.001). In this case of high-sensitivity C-reactive protein test, it is statistically significant, showing higher values in Subjects with moderate fatty liver than Subjects with mild fatty liver. thus, it is considered that hs-CRP can be used as clinical data for the prevention and management of fatty liver.

• Journal of Preventive Medicine and Public Health
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• v.38 no.3
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• pp.359-365
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• 2005

Objectives : An abrupt economic decline may widen the socioeconomic differences in health between the advantaged and disadvantaged in a society. The aim of this study was to examine whether the South Korean economic crisis of 1997-98 affected the socioeconomic inequality from all-causes and from cause-specific mortality between 1995 and 2001. Methods : Population denominators were obtained from the registration population data, with the number of death (numerators) calculated from raw death certificate data. The indicator used to assess the geographic socioeconomic position was the per capita regional tax revenue. Administrative districts (Si-Gun-Gu) were ranked according to this socioeconomic measure, and divided into equal population size quintiles on the basis of this ranking. The sex- and 5-year age-specific numbers of the population and deaths were used to compute the sex- and age-adjusted mortality rates (via direct standardization method), standardized mortality ratios (via indirect standardization methods) and relative indices of inequality (RII) (via Poisson regression). Results : Geographic inequalities from all-causes of mortality, as measured by RII, did not increase as a result of the economic crisis (from 1998-2001). This was true for both sexes and all age groups. However, the cause-specific analyses showed that socioeconomic inequalities in mortalities from external causes were affected by South Korean economic crisis. For males, the RIIs for mortalities from transport accidents and intentional self-harm increased between 1995 and 2001. For females, the RII for mortality from intentional self-harm increased during the same period. Conclusions : The South Korean economic crisis widened the geographic inequality in mortalities from major external causes. This increased inequality requires social discourse and counter policies with respect to the rising health inequalities in the South Korean society.