• Applied Biological Chemistry
• /
• v.50 no.4
• /
• pp.268-275
• /
• 2007

Diversity of the mud flat microbial population in Suncheon Bay was investigated by studying extracellular enzyme activities and 16S rDNA sequences. Four culturable bacterial strains with CMCase, xylanase and protease activities were isolated from the wetland and the mud flat. All the strains produced more xylanase activity than CMCase or protease activity, and the properties of the isolate enzymes from the wetland were similar to those from the mud flat. About 2,000 clones were obtained with the 16S rDNA amplified from the metagenomic DNA isolated from the mud samples. Based on the restriction pattern(s), seventeen clones were selected for base sequence analysis. Of the 17 clones, only 35% (6 clones) were found to be cultured strains and 65% (11 clones) to be uncultured strains. The similarities in the base sequences of the clones ranged from 91.0% to 99.9% with an average similarity of 97.3%. The clones could be divided into 7 groups, Proteobacteria (9 clones, 52.9%), Firmicutes (3 clones, 17.6%), Bacteroidetes (1 clone), Flavobacteria (1 clone), Verrucomicrobia (1 clone), Acidobacteria (1 clone), and Chloroflexi (1 clone). Most of the Proteobacteria clones were gamma Proteobacteria associated with oxidation-reduction of sulfur.

• Journal of Life Science
• /
• v.17 no.12
• /
• pp.1660-1668
• /
• 2007

The non-ionic surfactant (NIS) Tween 80 was evaluated for its ability to influence invitro cumulative gas production, dry matter digestibility, cellulolytic enzyme activities, anaerobic microbial growth rates, and adhesion to substrates by mixed rumen microorganisms on rice straw, alfalfa hay, cellulose filter paper and tall fescue hay. The addition of NIS Tween 80 at a level of 0.05% increased significantly (P<0.05) in vitro DM digestibility, cumulative gas production, microbial growth rate and cellulolytic enzyme activity from all of substrates used in this study. In vitro cumulative gas production from the NIS-treated substrates; rice straw, alfalfa hay, filter paper and tall fescue hay was significantly (P<0.05) improved by 274.8, 235.2, 231.1 and 719.5% compared with the control, when substrates were incubated for 48 hr in vitro. The addition of 0.05% NIS Tween 80 to cultures growing on alfalfa hay resulted in a significant increase in CMCase (38.1%), xylanase (121.4%), Avicelase (not changed) and amylase (38.2%) activities after 36 h incubation. These results indicated that the addition of 0.05% Tween 80 could greatly stimulate the release of some kinds of cellulolytic enzymes without decreasing cell growth rate in contrast to trends reported with aerobic microorganism. Our SEM observation showed that NIS Tween. 80 did not influence the microbial adhesion to substrates used in the study. Present data clearly show that improved gas production, DM digestibility and cellulolytic enzyme activity by Tween 80 is not due to increased bacterial adhesion on the substrates.

• Journal of dental hygiene science
• /
• v.9 no.3
• /
• pp.279-286
• /
• 2009

This research targeted 253 dental hygienists who are working in parts of the South Gyeongnam Province to identify their Degree of Recognition on the Elderly Long-term Care Insurance System executed on July 1,2008 according to their awareness. The following conclusions were obtained. 1. Experience in managing elderly patients' oral cavity and specialized education on the elderly patients while studying dental hygiene (department) manifested statically significant difference with the appropriate age of the Long-term care worker(p<0.01, p<0.05). Moreover, there was significant difference in the level of understanding on the Elderly Long-term Care Insurance System depending on the experience of volunteering and on whether they got specialized education on the elderly patients while working(p<0.01). 2. There was significant difference in the awareness of the Elderly Long-term Care Insurance System following interest in the health of the elderly patients' oral cavity(p<0.05, p<0.01, p<0.001).

• Journal of the korean veterinary medical association
• /
• v.36 no.12
• /
• pp.1100-1111
• /
• 2000

지난 3월말 66년만에 국내 파주의 젖소목장에서 구제역 첫발생을 시작으로 이후 5개지역(홍성, 보령, 화성, 충주, 용인)에 추가로 발생되어 국내축산업의 기반이 흔들릴 지경에 이르렀으나, 정부와 관련방역기관의 초동방역실시와함께 축산농가의 헌신적인 초동방역실시와함께 축산농가의 헌신적인 차단방역활동으로 더 이상 발생이 없었던 것은 여간 다행스런일이 아닐 수 없다고 하겠다. 그러나 올 가을이 구제역의 재발가능성이 높다는 국, 내외 관련전문가의 지적에 따라 이에 대비한 철저한 차단방역이 시급한 실정이다. 따라서 필자는 미국과 일본에서의 적용하고 있는 주요가축 중 소와 돼지의 위생관리기준을 조사$\cdot$분석한 것을 소개해보면서, 추후 우리나라의 소와 돼지에도 적용가능한 위생관리기준을 우리 수의사들이 재고해볼수 있는 기회를 가지는 것이 좋지 않을까 하는 간절한 바램을 피력해본다.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.40 no.2
• /
• pp.274-282
• /
• 2011

The purpose of this study was to investigate factory workers' knowledge of sanitation management of school foodstuffs and sanitation practices. A questionnaire that identified employees' food safety sanitation management knowledge and practices was developed based on a review of literature. Subjects consisted of 221 factory workers employed at 34 factories in the Daegu and Gyeongbuk areas. Almost half of the factory workers were 40~49 years of age (45.7%), 34.8% had 1~3 years of work experience, 62.4% of the respondents received food safety education 1~2 times a month and 75.1% of the respondents were satisfied with sanitation education. However, the total score for factory worker sanitation knowledge was low: 4.63/9. Sanitation performance was self-evaluated using a Likert 5-point scale. The total mean score for the factory workers' sanitation performance was 4.63/5. Satisfaction level and the amount of sanitation education, application of sanitation knowledge, attitude regarding sanitation management, and sanitation management performance level were significantly high among workers employed in a HACCP certification facility (p<0.05). The difficulties were found to be sanitation management and the time to deliver food to schools. To instill a sense of duty and pride among workers and to ensure that the food suppliers provide best-quality school foodstuffs safely, school dietitians and factory managers must actively educate workers in safe food handling and sanitation.

• Proceedings of the Korea Society of Information Technology Applications Conference
• /
• 2007.11a
• /
• pp.89-89
• /
• 2007

• 건강소식
• /
• v.30 no.12 s.337
• /
• pp.14-15
• /
• 2006

겨울철이 되면 추위를 피해 따뜻한 실내에서 생활하는 시간이 많아지므로 자연히 실외활동이 현저하게 줄어든다. 사람들이 실내로 모여들기 때문에 밀폐된 공간에는 미세한 먼지나 각종 오염물질로 넘쳐난다. 이것은 호흡기 질환에 쉽게 노출되어 있다는 것을 말한다. 하지만 우리의 몸은 뛰어난 적응력을 자랑하므로 규칙적인 운동과 충분한 휴식, 철저한 위생관리와 적절한 영양섭취를 통해 겨울철 질병에서 자유롭게 벗어날 수 있다.

• Journal of Korean Dental Hygiene Science
• /
• v.4 no.1
• /
• pp.79-87
• /
• 2021

Background: The purpose of the present study was to confirm the degree of physical activity and oral health behaviors of adolescents, and to investigate the relationship between them. Methods: The present study utilized data from the 15th (2019) Korea Youth Risk Behavior Web-Based Survey data, which included a total of 57,303 adolescents for analysis. Statistical analysis was performed using PASW Statistics 21.0. The significance level for significance was set at 0.05. Results: The rate of toothbrushing before sleeping was 1.152 times higher in the group that performed muscle strengthening exercises more than 3 times a week than in the group that did not (p < 0.001). The rate of use of oral hygiene products was 1.246 times higher in the group that performed physical activity for 60 min or more every day than in the group that did not, and 1.207 times higher in the group that performed muscle strength exercise at least 3 times a week than in the group that did not (p < 0.001). Conclusions: Adolescents who engaged in physical activities had a high rate of practice for some oral health behaviors. These results suggested that the group with positive health behaviors has a higher rate of oral health behavior practice, showing that health behaviors are highly interrelated.

• Journal of Korean society of Dental Hygiene
• /
• v.23 no.5
• /
• pp.333-341
• /
• 2023

Objectives: This study aims to propose a standard protocol for oral health care intervention activities by dental hygienists. Methods: A narrative literature review of home visit oral health care intervention activities reported in Cheonan, South Korea was conducted to enable the proposal of a standard home visit protocol for dental hygienists in the context of community care. Results: Oral health management intervention activities contributed to improving the quality of life, as well as the oral health, of older adults living at home. This was a result of applying a protocol consisting of oral observation, oral massage, expert oral hygiene management, oral muscle function training, and final stages. Conclusions: The visiting oral health intervention protocol was effective in resolving oral health problems of older adults. In the future, customized programs and reimbursement systems should be developed to promote oral health care for older adults that can be provided at home.

• Journal of the Korea Convergence Society
• /
• v.6 no.6
• /
• pp.231-239
• /
• 2015

This study examines the self-efficacy, job satisfaction and the desire degree of self-development according to the general characteristics of dental hygienists. It aims to contribute to the establishment of the education system considering the characteristics of organization and effectively motivates the self-development of the dental hygienists. With the collected data, frequency, percentage, One-Way ANOVA and t-test were conducted using SPSS 20.0. This study result showed that among the general characteristics, activities inside and outside of the hospital, working experience, education and the size of the hospital affect the self-efficacy, job satisfaction and the desire degree of self-development. to enhance the motivation for the self-efficacy, job satisfaction and self-development of the dental hygienists, it is necessary to establish the advanced medical environment, provide support for the activities inside and outside of the hospital, and develop the systematic education program. Also, dental hygienists need to put their greatest effort into enhancing their self-efficacy, job satisfaction and self-development.