• Analytical Science and Technology
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• v.18 no.4
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• pp.287-291
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• 2005

The quantitative contents of carbon monooxide in fresh blood for smokers and nonsmokers were measured by uv-visible spectrophotometric methods on the teenagers and adults. As a result, all blood contained some level of carbon monooxide. Typical teenager nonsmokers had a carbon monooxide level between 2.45 and 2.73%, smokers had a between 7.64 and 8.81%. On the other hand, adult nonsmokers contained carbon monooxide to 3.55% in fresh blood and adult smokers had 10.64%. This means that smokers have more carbon monooxide in blood than nonsmokers at the all ages.

• Journal of Environmental Health Sciences
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• v.2 no.1
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• pp.33-36
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• 1975

This study is aimed to increase the heat efficiency and to decrease the evolution of carbon monooxide during the combustion of holed coal-briquet by using of non-covered fire-box, and determined carbon monooxide versus combustion time and number of air-hole by the using of Orsat gas analyzer. The obtained results are as follows (1) Carbon monooxide are evolved the greatest quantity between 3rd and 6th hour from the hegining of combustion. (2) Combustion time of holed coal-briquet is not showed the difference to fire-boxes of A-type ($\phi$60mm) and B-type ($\phi$165mm). (3) Combustion temperature is decreased in turns of 4 air-hole>3 air-hole>2 air-hole to holed coal-briquet.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.168.2-169
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• 2003

Hydrogen cyanide is one of the toxic agents with carbon monooxide in fire victims and is released by combustion of nitrogen-containing organic material such as plastic and wool. Until now there are few reports about blood cyanide concentrations in fatalities by fire in Korea. So in this study we examined blood cyanide concentration in 12 cases of fire fatalities. (omitted)

• Journal of Chest Surgery
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• v.25 no.11
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• pp.1231-1235
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• 1992

Perforation of the esophagus is a rare complication of endotracheal intubation and usually occurs after hasty intubation. A 26-year-old female was transferred from other hospital for further management of empyema of the right lung. During admission, the empyema was found due to esophageal perforation, which had developed during the endotracheal intubation after acute poisoning of carbon monooxide 5 dayes prior to the transfer. The em-pyema and the esophageal perforation were successfully managed by conservative measures including effective drainage.

• Particle and aerosol research
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• v.7 no.2
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• pp.59-68
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• 2011

The objective of the study was to investigate the main factors that contribute the variation of $PM_{10}$ concentration of Seoul and to quantify their effects using generalized additive model (GAM). The analysis was performed with 3 year air pollution data (2004~2006) measured at 27 urban sites and 7 roadside sites in Seoul, a background site in Gangwha and a rural site in Pocheon. The diurnal variation of urban $PM_{10}$ concentrations of Seoul showed a typical bimodal pattern with the same peak times as that of roadside, and the maximum difference of $PM_{10}$ level between urban and roadside was about $14{\mu}g/m^{3}$ at 10 in the morning. The wind direction was found to be a major factor that affects $PM_{10}$ level in all investigated areas. The overall $PM_{10}$ level was reduced when air came from east, but background $PM_{10}$ level in Gangwha was rather higher than the urban $PM_{10}$ level in Seoul, indicating that the $PM_{10}$ level in Gangwha is considerably influenced by that in Seoul metropolitan area. When hourly variations of $PM_{10}$ were analyzed using GAM, wind direction and speed explained about 34% of the variance in the model where the variables were added as a 2-dimensional smoothing function. In addition, other variables, such as diurnal variation, difference of concentrations between roadside and urban area, precipitation, month, and the regression slope of a plot of carbon monooxide versus $PM_{10}$, were found to be major explanatory variables, explaining about 64% of total variance of hourly variations of $PM_{10}$ in Seoul.

• Journal of Microbiology and Biotechnology
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• v.9 no.2
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• pp.147-149
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• 1999

Biotransformation of exogenous (-)-(4R)-isopiperitenone in cell suspension cultures of Mentha piperita resulted in oxidized products, with (-)-7-hydroxyisopiperitenone being the major compound. The mass of products obtained $unde^{18}O_2$, atmosphere was two units higher than that under normal atmosphere. The biotransformation was inhibited by several cytochrome P450-specific inhibitors as well as by carbon monoxide. Carbon monooxide inhibition was substantially overcome by irradiation of cells with blue light including light at 450nm wavelength. These results suggested that a cytochrome P450-type monooxygenase was involved in the biotransformation.

• Proceedings of the KSR Conference
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• 2005.05a
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• pp.77-82
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• 2005

Recently, people's rising interests toward a 'well-being' lifestyle together with research contributions are accelerating the concerns regarding indoor air pollution making indoor air quality management an emerging environmental challenge of the era. The Ministry of Environment began to regulate the air quality of railway stations last year. The newly established 'Indoor Air Quality Act' covers 17 facilities whereas only underground subway stations and underground markets were regulated by previous 'Underground Air Quality Management Act' of 1996. In this study, we carried out the measurement of temperature, relative humidity, CO(carbon monooxide), $CO_2$(carbon dioxide), HCHO(formaldehyde), PM-10(particulate matters), and VOCs(volatile organic compounds) in underground subway stations. Based on the obtained results, we will suggest a way to improve the indoor air quality of the subway stations.

• Transactions of the Korean Society of Automotive Engineers
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• v.22 no.2
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• pp.37-43
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• 2014

Exhaust emissions were studied as a function of gasoline olefin composition in two vehicles-MPI and GDi engine equipped vehicles. Three different gasolines were tested which varied in olefin contents-12, 16 and 20 vol%. Exhaust emissions in two vehicles were affected by changes in gasoline olefin composition. Responses to changes in olefins were similar in both vehicles : reducing olefins lowered emissions of NOx and CO. Measured exhaust emissions included total hydrocarbons (THC), oxides of nitrogen (NOx), carbon monooxide(CO), carbon dioxide($CO_2$), formaldehyde, benzene, toluene, xylene, 1,3-butadiene and acetylene.

• 대한예방의학회:학술대회논문집
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• 1993.10a
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• pp.187-188
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• 1993

• Journal of environmental and Sanitary engineering
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• v.6 no.2
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• pp.17-31
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• 1991

The effects of environmental agents on health are great concern for all. It was recognized that each human has differential susceptibility to environmental effects. Susceptibility are changed by many factors includin gdevelopmpntal processes, genetic factors, nutritional stratus, preexisting disease conditions, life style and personal habits. Of all factors nutritional factors seem to be the area most modifiable. Consequently, It is an area that must be more thoroughly evaluated. In this paper, nutrient and environment interactions are reviewed briefly with published literatures. This paper deals with the influence of micronutrients(energy, protein and fat), Vitamins (vitamin 4, vitamin B-complex, vitamin C, vitamin D and vitamin I) and Minerals(calcium, iron, selenium, zinc and other minerls) on environmental effects. The role of arch nutrient was assessed in modifyine the expression of environmental pollutant toxicity with available litertures. In each nutrient section, the effect of environment was considered in following agents : heavy metals(lead, cadmium, mercury, silver and etc), inorganic agents(nitwits, sulfite, fluoride and etc), organic agents(benzene, carbon tatra-chloride, aflatoxin, auto dye, dialbrin etc), Irritant gas(ozone, carbon monooxide and etc), physical agents(X-irradiation, ultra violet, temperature and noise) and insectcides. The extent to which nutritional status modifies environmental effects 3nd its converse, how envirollments affects nutritional status is very complex. In deed, at the present time there are more than 50 chelnical/phycical agents that affect the nutrient metabolism and/or have their toxicity either directly diminished or enhanced by nutrients of those agents, small number of agents for each nutrients have sufficient evidence to warrant any reasonable degree of confidence in their hypothesized associtation. With these information at this present time it is hard to conclude that the recommended dietary allowance for each nutrient should be reconsidered.