• Journal of the Korean Institute of Gas
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• v.19 no.3
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• pp.1-8
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• 2015

In this study, we performed risk assessment of chloroprene by hazard evaluation and workplace investigation. The chemical is used to manufacture of shoes, tires, adhesives, and classified as IARC category 2B (possibly carcinogenic to humans) and target organ systemic toxicity. It is used about 1,300 tons per year in 27 sites. It was calculated the risk of carcinogenesis with chloroprene by Monte-carlo simulation that the averages are 2,199 and 26,404 in each case of working less than 15 minutes per day with local exhaust ventilation and over 4 hours per day without local exhaust ventilation. The risk of target organ systemic toxicity are 4.10 and 169.06 with high correlation with working time to be longer and with ventilation system. Therefore, it is recommended that the local exhaust ventilation and respirators to prevent occupational cancer and target organ systemic toxicity with chloroprene. Especially it is determined that there is a need to strengthen the workplace exposure limit (TWA 10 ppm) in Korea since it is managed with TWA less than 5 ppm ($18mg/m^3$) by the United States Occupational Safety and Health Administration (OSHA) as well as it has carcinogenicity, reproductive toxicity.

• Journal of radiological science and technology
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• v.33 no.4
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• pp.387-394
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• 2010

In the field of healthcare, the conventional sterilization treatments have been replaced by irradiation methods which are in accordance with internationally well established quality standards. The quality control in radiation sterilization assures that the absorbed dose of the irradiated material is in agreement with its requirements and standards. The electron beam irradiation requires technical assessments of more process parameters than gamma irradiation does. Korea has witnessed wide uses of electron accelerators since early 2000 but there hasn't been research experiences relating to quality system in accordance with international standards. The new large scale e-beam irradiation system with the specification of 10 MeV, 8 kW was installed and operated in 2008 by Seoul Radiology Services Co. It consists of the electron accelerator, product handling system, safety, documentation and control subsystems into an integrated system to meet the requirement of the Good Manufacturing Practice such as process quality assurance and management of product tracking records. To implement the international standard such as EN ISO11137, it is necessary to understand the purposes aimed in the standard and carry out the tests following the procedures required. This study presented the specification of the e-beam facility and showed what its design requirements and features are. The test results on a variety of process parameters were presented and validated it they are within the required limits.

• Journal of the Korean Society for Environmental Technology
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• v.19 no.6
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• pp.576-585
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• 2018

Systematic management during the whole life cycle from construction to operation and maintenance is very important for the seven underground pipelines (waterworks, sewerage, electricity, telecommunications, gas, heating, oil including waterworks and sewerage). Especially, it is the construction process that affects the whole life cycle of underground buried pipeline. In order to construct a new city or to maintain different underground pipes, it is always necessary to dig the ground and carry out construction and related work. There is a possibility that secondary and tertiary breaks frequently occur in the pipeline construction process after the piping constructed first in this process. To solve this problem, a system is needed which can monitor damage in real time. However, the supply of electric power for continuous operation of the system is limited according to the environment of underground buried pipelines, so it is necessary to develop a stable electric power supply system using natural energy rather than existing electric power. In this study, we developed a system that can operate the pipeline monitoring system for long time (24 hours and 15 days) using natural energy using wind and solar light.

• Journal of Environmental Impact Assessment
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• v.25 no.5
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• pp.357-368
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• 2016

Cambodia is the representative of developing country in Southeast Asia region. As a view point of water resource, Cambodia has in abundance but public sanitation problems persist in rural areas due to unsafe drinking water and untreated human waste. The purpose of this research is to prepare and develop new strategies for the water aid program in Cambodia by assessing, reviewing, and analyzing the present situation of water pollution for rural areas and the existing water use cycle in these regions. Pproyap and Langthle regions in Pursat province are selected as research areas. Cambodian's rural population in research areas relies on surface water stored in drinking-detention swamps, rain-water jars, and unprotected wells. The two types of main measures, thermotolerant coliform(TTC) bacteria and general pollutants, were conducted to assess the quality of selected water samples for research areas. TTC is a bacterial indicator of waterborne fecal contamination. For the 26 water samples, only one of the samples met the WHO standard for safe drinking water of 0 TTC colony forming units/100 mL.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.8
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• pp.3704-3714
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• 2013

This work was intended to investigate types and characteristics of job stress in general hospitals and special hospitals, and thereby suggest the direction to perform stable employee management and stress alleviation program through the ways of overcoming stress depending on each characteristic of hospitals. In this study, 109 of professionals working in general hospitals and 117 working in specialized hospitals participated, and, as a measuring instrument, the 'Measuring Instrument of Korean Job Stressors' according to 'Standardization and Development of Korean Job Stress Questionnaire' made by Occupational Safety & Health Research Institute as part of a policy research project in 2004 was used. As a result, this work looked into stress characteristics appearing differently according to the environment and organizational system of general hospitals and special hospitals. Based on the study result, it is expected that this work will be used as a fundamental material to develop the program of overcoming stress on the basis of each hospital characteristic.

• Journal of Technologic Dentistry
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• v.32 no.3
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• pp.221-232
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• 2010

Purpose: It is necessary for dental technicians exposed to hazardous chemicals in the dental laboratories to be informed of the various harmful effects of chemicals for their health and safety. The purposes of this study was to investigate the actual condition of the use of MSDS in dental laboratories and the recognition rate of MSDS for dental technicians. Methods: 231 dental technicians who were self-written questionnaire. The results were analyzed by SPSS 12.0. The answers to the questionnaire underwent frequency analysis, chi-square test and correlation analysis were performed to investigate association between health effects and recognition rate of chemical information. Results: The results from the effects of damage caused by chemicals 60.7%, and when it was less than 2 years working experience 47.6%. Currently any dental laboratories(rooms) was not furnished MSDS(0%) and even similar data furnishing rate was only 17.3%. Answer rate of 'Do not know about MSDS' was 73.6%. In addition to, education in the types and characteristics of chemicals(74.5%) does not receive all the higher education. For the question of 'To prevent human risks and accidents, is to provide chemical information needed', the answer rate of 'needed' was 87.2%. Moreover, the answer rate of 'To provide chemical information that could prevent accidents' was 76.6%. Therefore it was found that dental technicians need to be provided for chemical information. In addition, they wanted to get education related to chemicals used in the workplace(80.5%), and 90.9% was answered that they was willing to keep MSDS in they workplace. Conclusion: This study investigated the current dental laboratories(rooms) and the MSDS for the awareness and recognition of workers was very low, education was not being conducted properly. The dental laboratories(rooms) of the compact characteristics of the MSDS was not reasonably accessible and the furnishing location, dental laboratories(rooms) for the real item was needed for improvement. MSDS for dental technicians through education and promotion of information about chemicals and chemicals was to prevent health problems caused by the MSDS that will raise awareness of the necessity.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.720-729
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• 2016

This study was the effect of depression, anxiety, stress on suicidal ideation for some of the elderly living in the Youngdong county. Then it establishes alternatives for elderly suicide prevention and community improvements to help improve the quality of life of the elderly. For this study, a random sampling of 367 people aged sixty or older living in the eleven villages in Youngdong county participated in a survey. As a result, depression, anxiety and stress affects suicid in the positive direction. The correlation between depression, anxiety, stress, and suicidal ideation was significant. The relationship between depression and anxiety was highest and the probability is less than 0.05. As an alternative to the Elderly Suicide Prevention, First, mental health census and management for elderly, Second, a need to provide jobs for the elderly. Third, it requires a tight safety net of health and safety officer with reinforcements. Fourth, there is a need for enhanced recognition of life-love.

• Journal of the Health Care and Life Science
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• v.9 no.1
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• pp.141-146
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• 2021

Determination of capsaicin, dihydrocapsaicin and nonivamide in pungent liquids of self-defense spray were studied. The nonivamide having almost same spicy taste with capsaicin have been containing a few amounts in natural products, it had called as synthetic capsaicin or PAVA, have used to flavorings for foodstuffs and incapacitating agents of riot controls. Nowadays, it has been occasionally found that the quality controls of a self-defense sprays were not properly due to flood of illegal self-defense sprays. Thus, the simple analytical method with gas chromatography is developed, it is identified whether the products which have contained synthetic capsaicin were marked like natural materials as well as the pungent ingredients in it obeyed with permissible concentration to human or not was investigated. Finally, the pungent components and amounts in some kinds of self-defense spray were investigated.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.447-454
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• 2019

The purpose of this study aims to be used as base data of a policy which forms university students' appropriate behavior for the prevention of infection by analyzing some university students' prevention awareness of new type of infection. A self-administered questionnaire survey about students' seriousness, sensitivity, self-efficacy, and prevention behavior intent of new infection, was conducted in an university located in Gyeonbuk from April. 30th to May. 11th, 2018. Analyzing factors which affect the prevention behavior intent of infection with controlled general factor and health behavior, the prevention behavior intent was increased by ${\beta}=.125$ as seriousness increases and ${\beta}=.709$ as self-efficacy increases in Model 2, final model. However, sensitivity has no significant effect on the prevention behavior intent. Originally sensitivity has to be a significant factor regarding to the prevention behavior intent of new infection. But the result that sensitivity has no influence at all, shows that the students are insensitive to new diseases as they don't fear or sense danger of new infection. Therefore, a disease control policy which helps to increase sensitivity has to be established.

• Quality Improvement in Health Care
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• v.26 no.2
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• pp.104-112
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• 2020

This study was done to investigate the independent organizations established for patient safety, related policies, and the duties of experts in other countries. Australia established an organization called the Commission in 2006, the United Kingdom established the National Patients Safety Agency in 2001, and the United States assigned its work to the Agency for Healthcare Research and Quality in 2005. This was done by law in all three countries. The experts for patient safety were mainly called the "patent safety and quality coordinator", and although there was no qualification system for carrying out patient safety work, all three countries had licenses in the health care field or required more than 4-5 years of practical experience. The main duties were planning on patient safety and quality of healthcare service, data collection and analysis, and education, etc. and for this, competencies such as communication, leadership, and teamwork were required.