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Kweon, Dae-Cheol;Dong, Kyung-Rae;Jung, Jae-Eun;Lee, Kyeong-Hee;Kim, Soo-Kyung;Kim, Wook-Tae;Lee, Cheong-Jae;Song, Woon-Heung;Ma, Sang-Chull
- Journal of radiological science and technology
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- v.33 no.1
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- pp.1-10
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- 2010
Dental panoramic radiography is an imaging technique which shows the information of teeth, jaws and superficial structures on a single image. In this study, we propose the clinical dose reference for dental panoramic radiography. Dental panoramic radiography is an application which can increase the radiation does of oral cavity. It is very important to study the real condition of management for these panoramic X-ray equipments. Since there was no researches on dental panoramic equipments in domestic and foreign study groups, we measured and analyzed the dose such as effective dose, DAP and DWP of panoramic radiography.
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Lee, Do-Hun;Oh, Jong-Min
- Water Engineering Research
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- v.1 no.3
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- pp.199-208
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- 2000
The relationship between areal total phosphorus(TP) and areal hydraulic loading was identified and used as defining the trophic state of the reservoir. And three simple, conceptual TP models were tested against the measured in-reservoir TP concentration. The analyses were based on water quality data measured in the Ki Heung reservoir for two years. The results showed that Ki Heung reservoir has undergone eutrophic state, and Dillon's and Vollenweider's TP models were in close agreement with the measured annual mean TP concentration. However, the OECD's model understimated the measured annual mean TP concentration in the Ki Heung reservor. A discussion is given for the hypothetical application of TP loading plot which might be useful for establishing the TP control program in the resavoirs/lakes.
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