• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.8
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• pp.1231-1239
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• 2007

The purpose of this study was to investigate consumer's behaviors on the laundering of baby's clothing according to washing machine types. The subjects were 255 consumers with babies(0-2 years) in Korea. The data were collected with a self-administered questionnaire and analyzed by Chi-square test and multiple response analysis, and SPSS 12.0 statistics package was used. Consumers were separated into two groups according to washing machine types with general pulsator type and drum-type. Consumer's behaviors between general pulsator type group and drum-type group of washing machines were also examined. The results of this study were as follows. In the consumer satisfaction for washing machine, mostly drum-type group of consumers were satisfied with their washing machines. As the reasons of washing machine's dissatisfaction, noise, washing time and low washing efficiency were high in the pulsator type group, and washing time, noise and high price in the drum-type washing machine group. The consumers concerned about separation of clothing and laundering label while they washed laundry by washing machine. However, they didn't separate clothing because the small volume of laundry and a long washing time. The most interest and required thing of consumers was complete rinsing without any detergents used in washing as well as the removal of soils for baby's clothing regardless of two washing machine types. And they complained food soils like milk and mother's milk etc. were not completely removed by washing machine. As a whole the washing frequency of baby's laundry was once per a day and the rinsing also more than three times per a laundry. Most of the consumers used a private detergents for baby's clothing(detergents for baby's clothing only), and preferred to the high or boiled temperature washing as a desirable baby's laundering. There were significant differences between general pulsator type group and drum-type group of washing machines on the laundering of baby's clothing in this study.

• Journal of the Korean Society of School Health
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• v.27 no.1
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• pp.39-49
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• 2014

Purpose: The purpose of this study was to investigate the effect of hand washing education programs on knowledge, attitude and performance of hand washing in Undergraduates. Methods: The study used a nonequivalent control group quasi-experimental design. A total of 118 students in K university in Seoul, Korea, participated in this study. 67 students were included in the experimental group and 51 students were in the control group. The experimental group was given a lecture, Educational Hand Washing Program, developed by researchers. Using a structural questionnaire, the students' perception on hand washing was measured before and after the intervention, in terms of knowledge, attitude, and performance at home and school. Results: The experimental group showed significantly higher scores in knowledge (p=.033), attitude (p<.001), and performance at home (p=.001). However, the performance at school didn't show a significant difference between the two groups (p=.063). Conclusion: The results indicate that education is effective in enhancing knowledge, attitude, and performance of hand washing.

• Child Health Nursing Research
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• v.25 no.2
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• pp.123-132
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• 2019

Purpose: A hand-washing program using role-playing was developed for preschool children and tested to verify its usefulness. Methods: The participants were 46 preschool children (experimental group, 23; control group, 23). Data were collected from August 7, 2017 to September 20, 2017. The first posttest was carried out on the day after the initial intervention was completed, and the second posttest was performed after a month. Data were analyzed using the $x^2$ test, Fisher exact test, Shapiro-Wilk test, Mann-Whitney test, and Friedman test. Results: In the experimental group, the frequency of practicing hand-washing was significantly higher than in the control group on the next day (z=-4.94, p<.001) and after a month (z=-3.15, p=.002). The accuracy of hand-washing was significantly higher in the experimental group than in the control group on the next day (z=-4.02, p<.001) and after a month (z=-3.86, p<.001). Conclusion: The hand-washing program developed in this study was found to be an effective intervention strategy for improving the frequency and accuracy of hand-washing among preschool children.

• Journal of the Korean Home Economics Association
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• v.19 no.1
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• pp.39-45
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• 1981

The fishes that are mostly used in our homes such as Pacific Mackeral, hair Tail and Alaska Pollack were devided into Freezing group, Refrigerating group and Room temperature group according to storage temperature. TVB-N, TMA-N, TMA-O and pp.H. were measured in natural state, after water washing and 3% NaCl-water washing. The results are as follows: 1. Regardless of the kinds of fishes, TVB-N in room temperature showed that rottenness first appeared after 5~8 hours in raw state, 6~12 hours in water washing, and 8~12 hours in 3% NaCl-water washing. 2. Regardless of freezing and refrigeration, Pacific Mackeral became rotten after 14 days in raw state, 14~17 days in water washing and 17 days in 3% NaCl water washing. Alaska Pollack and Hair Tail showed rottenness after 8 days in raw state, 11 days in water and 3% NaCl water washing. 3. Even in hot summer days, freshness could be preserved for 10 days if fishes were freezed ($-20^{\circ}C$) or refrigerated (4~$8^{\circ}C$) after bowel excluded, washed in NaCl water and enveloped in poly-ethylene bag.

• Journal of Korean Biological Nursing Science
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• v.16 no.3
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• pp.157-163
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• 2014

Purpose: This study investigated the microorganisms in the hand before and after hand washing, using plain and antibacterial soap. The purpose of this study was to provide details, for educational purposes, of hand washing methods that should be used by college students for their hand hygiene. Methods: This study was arranged using a randomized control group pretest-posttest design. Data obtained through questionnaires were collected from college students in Gangwon Province. This study involved three groups under different conditions. The first and the second group washed their hands with plain and antibacterial soap, respectively. The third group members were educated about hand washing and they then washed their hands with plain soap. In addition, we collected samples to investigate the removal rate of Escherichia coli and Staphylococcus aureus, which can cause bacterial disease, by using sterile swabs from the hands in group 3. Results: The removal rates of bacteria in the first and the second group after hand washing with plain and antimicrobial soap were 62.7% and 76%, respectively. The third group, who were educated concerning proper hand washing, showed a figure of 72.8%. Conclusion: Repeated and more consistent education of college students concerning proper hand washing would be important in order to improve their knowledge, attitude, and performance with regard to hand washing.

• Tuberculosis and Respiratory Diseases
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• v.47 no.5
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• pp.595-600
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• 1999

Background: The estimation of ADA activity in pleural fluid has been proved useful tool in the diagnosis of tuberculous pleural effusions. However, there is controversy about its usefulness when estimated in bronchial washing fluid in the patients with pulmonary tuberculosis. This study aims at evaluating the usefulness of measuring ADA activity in bronchial washing fluid of tuberculous patients as biochemical marker in the early diagnosis of the disease. Methods: We examined the difference of ADA activity in bronchial washing fluid among the group I(tuberculosis group), group II(lung cancer group) and group III(control group). Results: There was significantly higher bronchial washing fluid ADA level in tuberculosis group compared to the lung cancer and control groups(p<0.01). Conclusion: These results suggest that bronchial washing fluid ADA activities seem to be a useful tool in the diagnosis of pulmonary tuberculosis.

• Journal of the Korean Home Economics Association
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• v.39 no.6
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• pp.1-14
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• 2001

The purpose of this research is to observe the differences in consumers behavior on clothes care based on their different lifestyles and different demographic characteristics. The research surveyed 267 women of 20 years old or older living in Taegu City. SPSS package was used for data analysis and frequency, percentage, average, standard deviation, factor analysis, cluster analysis, ANOVA(analysis of valiance). and Duncan test were used The results are as follows: 1. Lifestyle factors for the research object were found as 'Consumption-oriented','family-oriented', 'Economic-oriented','Leisure-oriented','conservatism-oriented'. The categories for analysis according to these factors are classified into 5 categories, category 1 is Leisure/Family-oriented group, category 2 Consumption/Leisure avoidance-oriented group, category 3 Economy/Family Apathy-oriented group, category 4 Conservatism-oriented group, and category 5 Consumption/Innovation group. Five factors for behavior on clothes care are found, including washing method, interest in detergent, environmental behavior, washing effectiveness, and management after washing 2. Behavior on clothes care based on lifestyle groups showed a meaningful difference according to the following: Interest in detergent(p<.05 level), environmental behavior(p<.01 level), and washing effectiveness(p< .01 level) 3. In demographic variations (such as age, monthly income, monthly expenditure on clothes), there is a meaningful difference in behavior on clothes care, such as interest in detergent or management after washing, according to different age groups. However, no meaningful difference is found in behavior on clothes care according to other demographic characteristics.

• Journal of the Korean Society of Clothing and Textiles
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• v.47 no.1
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• pp.85-109
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• 2023

Laundry has traditionally been regarded as one of the most demanding household chores, but the introduction of smart washing machines is changing this perception. Although smart washing machines have been on the market for several years and consumers' perceptions of washing machines have changed, little is known about consumers' perceptions of smart washing machines. The purpose of this study is to determine what users expect from smart washing machines. We conducted two focus group interviews with sixteen participants who had used smart home appliances to acquire qualitative data. Stimuli created by the interviewees were applied in the focus group interviews to collect more insightful data. We analyzed the data using the three-step method and QSR NVivo. Analysis revealed ten categories of predictive expectations, including seven utilitarian attributes (i.e., smart functionality, smart user interface, reliability, controllability, interactivity, functional value, and economic value) and three hedonic attributes (i.e., fashionable value, psychological value, and social value). The results of this study have implications for the development of smart washing machines that would satisfy consumers by taking user expectations into account.

• Journal of the Korean Society of Industry Convergence
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• v.27 no.2_2
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• pp.389-395
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• 2024

The purpose of this study was to evaluate the effect of different washing solvents and washing methods on the flexural strength of 3D printed temporary resin. A bar(25 × 2 × 2 mm) was produced with a layer thickness of 50 ㎛ using an LCD-type 3D printer and divided into 15 groups(n = 10, each) according to washing solution(IPA; 99% isopropyl alcohol, TPM; 93% Tripropylene glycol monomethylether, ETL; Ethanol, TWC; Twin 3D Cleaner, and DNC; DIO navi Cleaner) and washing method(Dip; Dip washing, Ultra; Ultrasonic washing, and Auto; Automated washing). All groups were washed for 5 minutes, and post-cured for 5 minutes using a UV LED light curing machine. The Flexural strength was measured using a three-point bending test using a universal testing machine. For statistical analysis, one-way ANOVA, Tukey HSD post hoc test, Kruskal-Wallis test and post-hoc by Bonferroni-Dunn test(𝛼=.05) were performed depending on whether the normality test was satisfied. In all washing solvents except TPM and DNC, the Dip group showed the lowest flexural strength values, while the Auto group showed the highest flexural strength values except for DNC. Additionally, the washing solution showed completely different flexural strength values depending on the washing method.

• International Journal of Oral Biology
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• v.40 no.3
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• pp.143-146
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• 2015

The purpose of this study was to compare the effect of different methods of hand washing by counting the number of bacteria on the hand surface. Eighteen clinicians were chosen and divided into three groups, consisting of six clinicians each. Culturing of the right raw palms of all individuals was performed. Individuals in the control group washed hands for 5 seconds with antimicrobial soap. Group 1 washed their hands for 10 seconds with antimicrobial soap. Group 2 washed with an instant alcohol-based hand sanitizer. After the respective washes, re-culturing of the right raw palm was done for each member of all groups. The colony-forming units (CFU) were calculated at each time point, and the reduction rate of CFU among the three groups were statistically evaluated using student t-test. All groups showed a significant decrease in CFU, according to the time applied (P<0.01). In addition, the reduction rate of CFU between the groups were statistically evaluated with ANOVA (P<0.01). It showed statistically difference between the control group and group 1, control group and group 2. The present study confirmed that the hand washing method with antimicrobial soap for 10 seconds and hand sanitizer, including alcohol, were excellent for decreasing the number of bacteria on the hand surface.