• Research in Community and Public Health Nursing
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• v.31 no.3
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• pp.234-243
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• 2020

Purpose: This study is aimed to identify the health-related quality of life for children with a mentally ill parent. Methods: The 13 participants were school-aged children whose parents were registered at the D Regional Mental Health Welfare Center. Data were collected using one-on-one interview with illustration cards and analyzed by content analysis. Results: The participants were living a difficult life in anxiety amid a reversal of parent-child role, such as doing housework and taking care of their parents. The study revealed a love-hate family relationship that the participants wanted parental recognition and attention but they were frustrated by insufficient parental care and sibling conflict. Nevertheless, they only had each other themselves to trust and rely on. Their mixed health awareness and negative emotions were influenced by parents. Some of participants were exposed to dangerous environment such as domestic violence, and they need support system for help in difficult situations. Sometimes they felt happy by satisfying physiological, social, and self-esteem needs. They also showed a positive potential that they were matured more than peers through the experience of overcoming difficulties. Conclusion: Not only were there not enough attention and support for the children with mentally ill people, but they were also exposed to an environment that threatens their physical or mental health. Therefore, to improve their health-related quality of life, there should be some integrated support of the community health system to cope with the challenges they face.

• KSBB Journal
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• v.26 no.1
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• pp.49-56
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• 2011

Volatile components of crude fucoidan and its raw material, Undaria pinnatifida sporophylls were identified by GC/MSD analysis, and the effects of a combined method of solvent extraction and drying (hot-air drying or spray drying) on deordorization of fucoidans were examined. The major components of seaweed smell (odor) in crude fucoidan and Undaria pinnatifida sporophylls were identified as alkanes (octadecane, heptadecane, tetradecane) and acids (hexadecanoic acid, oleic acid). Solvent extraction and drying were combined for the deordorization of fucoidans: hot-air drying/deordorization process (HDDP) and spray drying/deordorization process (SDDP). The deordorization effects of solvent extraction using solvents including water, ethanol, and acetone were investigated. Among the tested solvents, ethanol was selected as a deordorization solvent, because the seaweed smell and taste were mostly lowered by ethanol extraction followed by drying. In addition, HDDP and SDDP were compared, showing that SDDP gave higher sensory characteristics than HDDP. When the crude fucoidan was treated by ethanol extraction for 30 min followed by SDDP, approximately 60% of off-flavor components of crude fucoidan was removed based on GC/MSD peak area, and the total sugar and sulfate contents and APTT-anticoagulant activity significantly increased compared to crude fucoidan. In conclusion, SDDP after ethanol treatment was proposed and established as a deordorization process for fucoidan preparation.

• KSBB Journal
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• v.25 no.2
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• pp.130-136
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• 2010

Astaxanthin is an unsaturated compound with a double bond. So it is easily decayed by heat and oxidation (light) during its storage and processing of it. Nanoliposome formulation technology was utilized to improve the stability of astaxanthin. Nanoliposome preparation conditions were established and the stability of astaxanthin encapsulated nanoliposome and free astaxanthin was investigated. Thermal stability and UV-stability of astaxanthin encapsulated nanoliposome increased up to two times and tree times, respectively. Astaxanthin encapsulated nanoliposome could be used as a stable functional material for industrial purposes.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.10 no.2
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• pp.53-67
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• 2000

Coke-oven workers are regularly exposed to coke oven emissions (COE), which consist primarily of polynuclear aromatic hydrocarbons (PAH) and volatile organic components. This study assessed the exposure of coke-oven workers to COE and PAH. The results of this study are as follows. 1. Among the 136 samples on coke-oven workers 33.1% exceeded the occupational exposure limit to the Coal Tar Pitch Volatiles ($0.2mg/m^3$) established by the Korean Ministry of Labor and American Conference of Governmental Industrial Hygienists(ACGIH). 2. The coke-oven workers were classified into twelve job categories and there was statistically significant difference among the airborne concentrations of COE and PAH in twelve job categories(p<0.001). 3. There was no significant difference of the airborne concentrations of COE between NIOSH method and OSHA method applied. 4. There was a significant correlation between the airborne concentrations of total PAH and COE(r=0.733, p<0.01). 5. The percentage of naphthalene in total PAH was 55.9% and the highest among those of 16 PAHs. There was a significant correlation between the airborne concentrations of naphthalene and total PAH(r=0.90, p<0.01) and this study recommends naphthalene as the index component of PAH.

• Korean journal of applied entomology
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• v.58 no.4
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• pp.319-320
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• 2019

We have developed simple and reliable new habitat plants system with natural enemies names as "Natural Enemy in First (NEF)" method. As a result, NEF without monitoring and release of just natural enemy with monitoring showed higher bio-control effects, i.e., 83% and 70%, respectively than environmental friendly agricultural material (EFAM) treatment. In addition, the average population density of predatory mites on NEF method was higher (three times) than other treatment.

• Journal of the Korean Institute of Intelligent Systems
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• v.26 no.3
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• pp.169-175
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• 2016

There are many researches to develop robots that improve its mobility and task planning to adapt in various uneven environments. In this paper, we propose the design method and task planning of quadruped robot which can have top-bottom docking structure. The proposed quadruped robot is designed to adjust leg length using linear actuators and perform top-bottom docking and undocking using octagonal cone shaped docking module. Also, to stable walking and information gathering in the various environments, a geomagnetic sensor, PSD sensor, LRF sensor and camera. We propose an obstacle avoidance method and the topbottom docking algorithm of the two quadruped robots using linear actuator. The robot can overcome obstacles using adjusting leg length and activate the top-bottom docking function. The top-bottom docking robots of two quadruped robot can walk 4 legged walking and 6 legged walking, and use 4 arms or 2 arms the upper. We verified that the docking robots can carry objects using 4 leg of the upper robot.

• Korean Journal of Child Studies
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• v.36 no.2
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• pp.111-130
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• 2015

The purpose of this study was to conduct a qualitative analysis of mothers' role experiences during their children's transition from early childhood to middle childhood. Eleven mothers of first-grade elementary school students participated in a group meeting, group interviews and journal writing. The results indicated that mothers described their experiences as a critical first step outwards on the journey to independence. The role experiences of the mothers who participated in this study can be seen from three perspectives: Firstly, as mothers as individuals projecting a mother's worries onto their child and becoming a capable person to help their children adjust to a new school environment, secondly, as mothers as family members experiencing a more authoritarian parenting style and difficulties of co-parenting with their husbands and parents-in-law, and lastly, as mothers as members of the extended family systems experiencing communication difficulties regarding the public education system and feeling uncomfortable with other parents. The findings may be used to develop support programs as well as a channel for interacting with public education bodies and community agencies.

• The Journal of Korean Academy of Prosthodontics
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• v.56 no.2
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• pp.134-140
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• 2018

Clinical crown lengthening procedure would be an effective method for overcoming adverse clinical condition such as short abutment length. There are three kinds of methods in clinical crown lengthening, those are, surgical crown lengthening, orthodontic extrusion and surgical extrusion. Clinicians have to try their best to choose a proper method among those for favorable results. This report aims to review the considerations in each method with various cases and to suggest a decision flow for appropriate selection.

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.2
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• pp.349-353
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• 2007

Mucocele is a clinical term of the localized superficial mucosal swelling caused by salivary retention after the obstruction or the rupture of minor salivary ducts. Various treatment methods have been suggested to lower its recurrence rate, including complete excision of lesion Biopsy punch can be used easily and simply for complete excision of mucocele. It has several advantages, such as convenience in use, low bleeding tendency, and nearly no requirements for post-operative management. In this case, biopsy punch was used for the removal of mucocele in an uncooperative child, which enable fast, simple and safe procedure, with a good result.

• Journal of Environmental Health Sciences
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• v.38 no.4
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• pp.300-310
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• 2012

Objectives: Indoor air quality problems in public spaces have recently become a very important issue in South Korea, because many spend a long time every day indoors. In this study, an extensive literature review was performed on the subject of suspended bacteria and fungi in public facilities. The objective of this study was to evaluate the extent and types of suspended bacteria and fungi in indoor air in South Korea. This study will provide direction to the research in the field of indoor air. Methods: Article reviews was conducted using a search engine and the following keywords; 'bacteria', 'total suspended bacteria', 'fungi' and 'indoor air' from published articles since 2000. Results: Most of the places of measurement were schools, kindergartens, childcare centers and general hospitals. The highest concentrations of total suspended bacteria and fungi were found in schools and kindergartens. Some public facilities exceeded the standard of 800 CFU/$m^3$. There were few studies on other suspended bacteria: Gram Negative Bacteria, Staphylococcus and Klebsiella pneumoniae. Conclusions: It appears that more studies with intensive controls are needed. It was found that schools and kindergartens were most susceptible to microbial indoor air pollution. These results may be able to suggest an indoor standard for suspended bacteria and fungi in South Korea.