• Journal of Korean society of Dental Hygiene
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• v.9 no.2
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• pp.147-163
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• 2009

This study was attempted in order to look into 'Assist work' as to Implant system which dental hygienists perform in a clinical field. Subjects of this research were 362 dental hygienists who work at general hospital, University hospital, dental hospital, and dental clinics located in Seoul, Kyeong-gi, In-chon, and Jeon-buk area. As to research tool, we produced questionnaire which was comprised of the total 25 items regarding 3 of general features (age, career of dental hygienist, and personality), 6 of implant system assist work, 3 of Informed consent before surgery, 6 of preoperative preparation and maintenance related business, and 7 items related to postoperative maintenance. By using SPSS program, collected data was analyzed. Results of analysis in this study were as follow; 1. As to implant related education, dental hygienists' experience of education was high as 77.7%, and the people who is needed more education was 86.3%. Consequently, dental hygienists' concern about the implant related education was very high. 2. It was observed that most of informed consent making approvement by announcement to the surgical operation was made by dental hygienist before implant as 95%. 3. Over 80% of dental hygienists performed acquisition of cleanliness technology, motivation, back up articles preparation, treatment area arrangement, and etc. which we can check by preoperative maintenance items. In particular, response about the motivation was very high as more than 90%. 4. When performing an operation, in the case of disinfecting finger was low for 53.9% and the method was mainly washing with drug solution, and gown sterilization was performed only in 52.2%. Therefore education regarding disinfection was urgently needed. 5. Significance of education could be known that answers of hygienists experienced education appeared highly in items of maintenance method and there was statistically significant difference(p<0.05). 6. In case that assist work were 21cases or greater, agitation measurement was the most many performed in 68.9% and difference was showed up significantly(p<0.001). 7. Evaluation about periodontal tissue was high in dental hygienists who had experienced education and also there was statistically significant difference. In conclusion, assist work of dental hygienists was very comprehensive when implant surgery was performed, and all of items excluding hand disinfection or gown disinfection were highly showed up in most of hygienists. However, since there is the limit that we didn't investigate the quality of performing contents. It is considered that further study regarding the content has to be progressed for supporting this result in the future.

• Food Science and Preservation
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• v.13 no.3
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• pp.316-321
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• 2006

Disinfection of electrolyzed water (EW) on strawberry by immersion washing and quality changes during storage at $5^{\circ}\C$ was compared with one immersed in chlorine water and not treated. Total count of strawberry washed with EW by immersion in 10 volumes of EW for 20 min was decreased to about 2 log cycle compared to the untreated And rate of microbial growth during storage was lower than ethers. Decaying ratio in strawberry treated with electrolyzed low-alkalinewater (EW-2) showed lower as of 10% level after 5 days of storage compared) to the untreated and the treated with chlorine water (CW). Hardness in the treatment of EW was not changed significantly until 3 days of storage, after then rather increased. Change in surface color of strawberries was observed; L value in the CW treated and the untreated increased whereas it decreased in the treatment of EW. And color difference(${\Delta}E$) during storage was observed the lowest in the untreated until 3 days of storage. The initial value of residual chlorine in the treatment of EW was at the level of $0.04{\sim}0.06ppm$, and $1{\sim}3$ days later showed almost the equal value to level of $0.02{\sim}0.03ppm$ in all treatments. Sensory characteristic during storage was preferable on strawberry washed with EW (EW-1 and EW-2) to the other treatments.

• Journal of Korean Ophthalmic Optics Society
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• v.5 no.2
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• pp.33-42
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• 2000

This study was conducted for 356 customers coming to N optometrist office in Masan city in order to evaluate practice of hygienic control of contact lens storage cases. The results were as follows: 1) For disinfection of contact lens storage case, students used wetting saline solution(42.6%), exclusive wetting solution(23.0%) and 21(11.5%) of them didn't practice disinfection. Others besides students used wetting saline solution(29.1%), boiling water(27.3%) and 42(25.5%) of them didn't practice disinfection(P<0.01). 2) For storage case washing solution, 18(85.7%) out of 21 people who belong to high economic class used wetting saline solution, 3(14.3%) used exclusive wetting solution, 141(48.0%) out of 294 people who belong to middle economic class used wetting saline solution, 129(43.9%) used exclusive solution(P<0.01). 3) For wetting solution of storage case, 132(74.6%) out of 177 students used exclusive wetting solution and the rest(25.4%) used wetting saline solution, 102(64.2%) out of 159 others besides students used exclusive wetting solution, 51(32.1%) used wetting saline solution and 6(3.8%) used sold water and city water(P<0.05). 4) 66(94.3%) out of 70 contact lens storage cases were contaminated by bacteria and Serratia marcescens was isolated in 33(47.1%) out of 70 contact lens storage cases.

• Journal of Animal Science and Technology
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• v.56 no.5
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• pp.19.1-19.6
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• 2014

The purpose of this study was to investigate crucial factors on HACCP system implementation in domestic livestock product plants, and to offer job satisfaction and the career prospect of HACCP system operators. The survey was carried out by selecting 150 HACCP system operators who implemented HACCP system. The respondents claimed that the most important contents in HACCP system operation were to assemble HACCP team (21.8%), and the second was to monitoring (20.0%). Documentation and recording (16.9%) and verification (11.1%) were followed. The respondents answered the major factor in sanitation management was cleaning/washing/disinfection (18.9%) and inspection (18.4%). The results showed that there were significant differences in the prospect of occupation in HACCP system operator by the gender (p < 0.015), age, livestock product facilities, service period, and position (p < 0.001). The respondents from HACCP system operator were satisfied with their job (73%) and also showed optimistic prospect of occupation (82%).

• Journal of Korean Public Health Nursing
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• v.36 no.1
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• pp.20-32
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• 2022

Purpose: This study aimed to investigate factors affecting handwashing practice among elementary school students by assessing the perception of coronavirus disease-19 (COVID-19) and characteristics related to knowledge, attitude, and practice of handwashing. Methods: The cross-sectional study design and an online self-reported survey were used in this study. The subjects were 211 elementary students at a school located in G province, Korea. Data were collected from January 4 to 8, 2021. The data were analyzed using SPSS version 25.0. Results: Mean scores for knowledge, attitude, and practice of handwashing were 17.09 (out of 20), 21.15 (out of 24), and 27.51 (out of 33), respectively. There were significant positive correlations between the perception of COVID-19 and knowledge of handwashing (r=.23, p=.001), between knowledge and attitude toward handwashing (r=.45, p<.001), between knowledge and practice of handwashing (r=.18, p=.010), and between attitude and practice of handwashing (r=.28, p<.001). The factors influencing handwashing practice were handwashing frequency at home (β=.39, p<.001), handwashing frequency at school (β=.18, p=.006), and attitude toward handwashing (β=.15, p=.026), which explained 34.2% of the variance. Conclusion: These results suggest a need to raise awareness of the importance of handwashing and develop an education program for infectious disease prevention.

• Safety and Health at Work
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• v.11 no.3
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• pp.372-377
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• 2020

Infection risks of handling specimens associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by public health laboratory services teams were assessed to scrutinize the potential hazards arising from the work procedures. Through risk assessments of all work sequences, laboratory equipment, and workplace environments, no aerosol-generating procedures could be identified except the procedures (mixing and transfer steps) inside biological safety cabinets. Appropriate personal protective equipment (PPE) such as surgical masks, protective gowns, face shields/safety goggles, and disposable gloves, together with pertinent safety training, was provided for laboratory work. Proper disinfection and good hand hygiene practices could minimize the probability of SARS-CoV-2 infection at work. All residual risk levels of the potential hazards identified were within the acceptable level. Contamination by gloved hands was considered as a major exposure route for SARS-CoV-2 when compared with eye protection equipment. Competence in proper donning and doffing of PPE accompanied by hand washing techniques was of utmost importance for infection control.

• Journal of The Korean Society of Agricultural Engineers
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• v.51 no.5
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• pp.95-100
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• 2009

The water purification systems have been hardly used for agricultural purpose due to their complicated compositions and high costs for farmers, while only simple filtrations have been applied to irrigation systems in order to prevent the system from clogging problems. This study therefore developed a clean water supplying system, the Filter-Disinfection-Adsorption (FDA) system, especially for greenhouse cultivation of where low quality of water is available. This system has also been produced for providing convenience water to farmers in the areas of no water supply service systems for the purpose of washing their bodies or agricultural machineries after farm work. The FDA system consists of three stages of purification processes with an integral module, including disk and teflon filtrations and Ultraviolet (UV) sterilization processes. Indoor experiments were undertaken with a trial product of the FDA system to test its performance. The operation test of the process was performed as well as the condition check of each item including UV module, filters, control panel, pump, valves, etc. The results shows good performance of each test with no critical problems. The initial and maintenance costs were also analysed with other purification systems. From the comparisons, the FDA system found to be very economical and easy to use.

• Korean Journal of Occupational Health Nursing
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• v.16 no.1
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• pp.5-14
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• 2007

Purpose: The purpose of this study was to investigate the factors influencing performance of the clinical nurses about the management of nosocomial infection. Method: The data were collected using structured questionnaire from 300 clinical nurses from April 26, 2004 to May 20, 2004. The data analyzed by the SPSS (ver10.0)program, and it included descriptive statistics, t-test, ANOVA, the Pearson correlation coefficient, stepwise multiple regression. Result: Personal hygiene management and disinfection equipment management had the higher record than other dimensions. The level of recognition for management of nosocomial infection showed positive correlation with the level of performance for management of nosocomial infection. The level of recognition for management of nosocomial infection, working period, number of hand washing, have significant effects on the degree of a performance for management of nosocomial infection. These predictive variables of the degree of a performance for management of nosocomial infection explained 17% of variance. Conclusion: It is needed to be developed for the effective management of nosocomial infection through the educational program.

• Journal of Korean Physical Therapy Science
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• v.9 no.3
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• pp.141-150
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• 2002

Most of physical therapists has thought be exposed themselves to risk of hospital infection but it is reported that have been low concern about infection management. Above like this haven t done systematical education on hospital infection, also physical therapist's information management of infection disease is found very low. It is lack of driving information about disease condition of the patients. Physical therapists has thought their working room may be polluted a lots of micro-organism(%). The control situation of infection waste articles, only 53% responded that the controller has managed very intensive so we can feel to need more intensive It's reported that air culture investigation of physical therapy room has never initiated. To wash the hand, before, after treatment of the patients of physical therapist, is very low frequency. And 73% have responded that the time to wash the hand stays 15-45 second. It is examined that 70% physical therapy room is equipped with washing system, a response of 58% disinfects physical therapy room 1-2times per one month. 36% responded disinfection of treatment modality have done everyday, 25% responded have never done. The location physical therapy room is above one floor - 65%. A response of 57% is ventilation system sufficiency, it is considered that physical therapists needs more efforts on management of hospital infection.

• Current Research on Agriculture and Life Sciences
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• v.15
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• pp.69-81
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• 1997

For the prevention of worldwide prevalent disease of nuclear polyhedrosis virus (NPV), environmental conditions and their incidence of grasserie was investigated through 57 cases of silkworm rearing from the year of 1979 to 1993 in the countries of Korea, Japan, and Philippines. Relationship between the occurrence of NPV and environmental factors were also analysed from the aspect of causal pathogenesis. Unfavorable foactors related to the prevalence of NPV disease was reconfirmed by the assay of experimental rearing. Silkworms reared on mulberry leaves or artificial diet appeared similar result on the occurrence of grasserie. Disinfection by formalin and simple sweeping or washing was not significantly different on the occurrence of NPV disease. Following insufficient ventilation on the younger larvae. from the 1st to 3rd instar, the disease by NPV at the later stage was remarkably emphasized those insidence. An experimental rearing from 1993 to 1996 demonstrated the prevention of NPV disease by simple cleaning of sweeping under the condition of air forced ventilation, the customal practice of disinfection with formalin or any other chemical agents could be omissible.