• Journal of Species Research
• /
• v.7 no.1
• /
• pp.36-49
• /
• 2018

During a study to discover indigenous prokaryotic species in Korea in 2016, a total of 42 actinobacterial isolates were recovered from various environmental samples collected from natural cave, squid, sewage, sea water, trees, droppings of birds, freshwater, eelgrass, mud flat, sediment and soil. On the basis of a tight phylogenetic clade with the closest species and high level of 16S rRNA gene sequence similarity, it was shown that each isolate was assigned to independent and previously described bacterial species which were assigned to the phylum Actinobacteria. The following 42 species have not been reported in Korea: eight species in two genera n the order Corynebacteriales, 26 species of 16 genera in the Micrococcales, one species of one genus in the Micromonosporales, one species of one genus in the Propionibacteriales, four species of two genera in the Streptomycetales and two species of two genera in the Streptosporangiale. Cell morphology, Gram staining reaction, colony colors and features, the media and conditions of incubation, physiological and biochemical characteristics, origins of isolation and strain IDs of 42 unrecorded actinobacterial species are presented in the species description.

• Journal of Species Research
• /
• v.7 no.1
• /
• pp.24-35
• /
• 2018

During a series of extensive surveys of prokaryotic species diversity in Korea, bacterial strains belonging to Gammaproteobacteria were isolated from various sources of aquatic and terrestrial environments. A total of 39 isolates were obtained, which represented 39 unrecorded species in Korea belonging to 20 genera in 12 families. Enterobacteriaceae was the largest family, as eight species were assigned, which was followed by Moraxellaceae (6 species) and Pseudomonadaceae (5 species). At the genus level, Marinobacter (6 species), and Pseudomonas (5 species) were the main genera, and at least two species were obtained for Acinetobacter (3 species), Psychrobacter (3 species), Shewanella (2 species), Dickeya (2 species), Salinivibrio (2 species), Vibrio (2 species) and Rhodanobacter(2 species). The detailed description of each unrecorded species is provided.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.6
• /
• pp.2869-2879
• /
• 2013

The purpose of this study was to investigate burnout, interpersonal relations, professional self-concept and depression in clinical nurses and to examine the relationship between these variables and depression. Data were collected through self reported structured questionnaire form 150 nurses in 8 nursing units of A general hospital by convenient sampling methods form December 10, 2012 to January 30, 2013. Burnout was negatively related to interpersonal relations and professional self-concept and was positively related to depression. Interpersonal relations were positively related professional self-concept and were negatively related to depression. Professional self-concept was negatively related to depression. Among these main variables and variables which showed significant differences in depression (age, marital status, career length, working part), only burnout accounted for 43% of the nurse's depression. Therefore, for controlling depression and improving mental health, it is necessary to develop nursing intervention to reduce burnout at the working environment.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.1 no.2
• /
• pp.1-13
• /
• 1998

The objective of this paper is to develop a cartographic model for water tank suitability for small forest fire extinction using GIS. Various digital maps were created using CAD & GIS for Amnam urban park, which is located in Seogu, Pusan city. The park had 4 small water tanks for fire extinction. The developed descriptive cartographic model identified the spatial effects of fire extinction due to the existing facilities. The prescriptive model to enhance spatial effects was developed for the determination and comparison of the effects of forest fire extinction due to the proposed facilities. This paper proved the techniques of GIS and cartographic modelling are significant for the suitability analysis of water tanks for small forest fire extinction.

• Journal of Korean society of Dental Hygiene
• /
• v.20 no.5
• /
• pp.635-643
• /
• 2020

Objectives: The purpose of this study was to evaluate dental hygienists understanding of the provisions of oral health care and awareness for the elderly. Methods: A survey was conducted among 285 dental hygienists, currently practicing around Gwangju province, Korea. The questionnaire contained questions on general characteristics of the subjects (5 items), oral health status of the elderly (5 items), and awareness (8 items) among the dental hygienists. The data were analyzed using a chi-square test. IBM SPSS 21.0 program was used for all statistical analyses. Results: The results showed that 47.7% of the dental hygienists took care of 1 to 5 elderly patients per day; they could not provide high quality oral health education to these patients because of lack of knowledge, lack of treatment time, and excessive workload. An analysis of the hygienists' professional educational experience related to oral healthcare of the elderly during university years showed that the older and more experienced hygienists' were less likely to have completed this education, i.e., 22.05% and 10.9%, respectively (p<0.001). Of all the dental hygienists, 62.8% were interested in oral health problems of the elderly, and 34.4% of dental hygienists for geriatric oral care were the most needed for geriatric oral care education (p<0.001). Conclusions: According to these results, it is important that dental hygienists participate in training on oral healthcare for the elderly and develop various programs for managing the oral health of the elderly.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.31 no.4C
• /
• pp.441-450
• /
• 2006

WiBro(Portable Internet Service) is service being capable to provide a high data rate wireless internet access with Personal Subscriber Station under the stationary or mobile environment, anytime and any where. It will fill the gap between very high data rate wireless local area networks and very high mobility cellular systems. The security is an important point of WiBro providing high data and mobile wireless services. This paper proposes user authentication mechanism of WiBro wireless networks applied EAP-AKA authentication protocol. As a result of Wireless authentication based on EAP-AKA, this mechanism is capable to be used in WiBro-WLAN-3GPP interworking scenario as well as the WiBro authentication mechanism.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.33 no.10C
• /
• pp.764-777
• /
• 2008

In 4G environments, which is the next generation technology for mobile network, it is forecasted that the wireless Internet using a mobile devices such as a mobile phone, PDA will increase because of expansion of Internet and integration of heterogeneous networks. Therefore, we need a Digital ID management technology that can prevent illegal uses and manage private information efficiently in wired and wireless environments. In this paper, we analyze various Digital ID management technologies, and then define requirements of user-centric Digital ID management technology. In addition, we newly propose the authentication mechanism for mobile applications in LTE/SAE network. Finally, we propose the mobile Digital ID Wallet mechanism suitable for 4G environments.

• Journal of Species Research
• /
• v.9 no.4
• /
• pp.346-361
• /
• 2020

In the project of a comprehensive investigation of indigenous prokaryotic species in Korea, a total of 39 bacterial strains phylogenetically belonging to the classes Betaproteobacteria and Gammaproteobacteria were isolated from various environmental sources such as soil, cultivated soil, sludge, seawater, marine sediment, algae, human, tree, moss, tidal flat, beach sand and lagoon. Phylogenetic analysis based on 16S rRNA gene sequences revealed that 39 strains showed the high sequence similarities (≥98.7%) to the closest type strains and formed robust phylogenetic clades with closely related species in the classes Betaproteobacteria and Gammaproteobacteria. In the present study, we report 14 species of 9 genera of four families of two orders in the class Betaproteobacteria and 25 species of 21 genera of 15 families of eight orders in the class Gammaproteobacteria, which have not been reported in Korea. Morphological, biochemical, and physiological characteristics, isolation sources, and NIBR deposit numbers are described in the species descriptions.

• Journal of Life Science
• /
• v.23 no.7
• /
• pp.886-892
• /
• 2013

We investigated ethanol production from glycerol after screening of the yeast Pachysolen tannophilus ATCC 32691. For yeast to produce ethanol form glycerol, it is important that aeration is finely controlled. Therefore, we attempted to produce ethanol using a surface-aerated fermentor. When 880 ml of YPG medium (1% yeast extract, 2% peptone, 2% glycerol) was used to produce ethanol, the optimal aeration conditions for ethanol production were a surface aeration rate and agitation speed of 500 ml/min and 300 rpm, respectively. In a fed-batch culture, the maximum ethanol production and the maximum ethanol yield from glycerol (Ye/g) was 5.74 g/l and 0.166, respectively, after 90 hr using the surface-aerated fermentor.

• Research in Community and Public Health Nursing
• /
• v.16 no.4
• /
• pp.446-457
• /
• 2005

Purpose: The purpose of this study was to analyse researches on nursing intervention for elderly health promotion. Method: A literature review of 38 researches was carried out using guidelines developed by the present researchers. Result: The research papers studied in this research were theses written for doctoral or master's degree and published between 1994 to 2004. These researches applied nursing intervention for health promotion of elders and used experimental study design. The average period of nursing intervention was about 9 weeks and the average frequency was three times per week. As for major characteristics of subject groups, most of them were over 65 years old (76.3%) and resided in community (65.8%), and each group consisted of 10 to 29 elders. The dependent variables used in these studies included physiological variables (blood pressure, blood cholesterol level, pulmonary function, fasting blood sugar, blood cortisol level, body mass etc.), psychologic variables (depression, quality of life, life satisfaction, loneliness, anxiety etc.), cognitive variables (perceived benefits, perceived barriers, self-efficacy, self-concept, subjective health status etc.), activities of daily livings, health promotion behavior, pain, risks of fall, and variables related to Trans Theoretical Model. The majority of these studies (78.9%) applied exercise programs for health promotion including exercise motivating programs (15.8%). Conclusion: We suggest that more various nursing interventions must be applied to promote elders' health and to take care of their chronic diseases.