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朴相瓚,趙炳烈 충주대학교 1997 한국교통대학교 논문집 Vol.32 No.2
The objective of this study is keeping up radiation safty control from uranium material contamination. Accordingly, the check and radiation monitoring of the lagoon has been perfomed periodically. The liquid waste in lagoon will be vaporized mostly into the atomosphere by spontaneity of natural pheonmeunm after about four years.The uranium concentration in the liquid waste of lagoon reduced considerably to about 40 ppm from 2 g/l quantities of this early year due to uranium precipitation.
조병열 ( Byong Youl Cho ),강형길 ( Hyung Gil Kang ),강효주 ( Hyo Ju Kang ),류갑민 ( Gab Min Ryu ),이재영 ( Jae Young Lee ),박남규 ( Nam Gyu Park ),허민도 ( Min Do Huh ) 한국어병학회 2003 한국어병학회지 Vol.16 No.1
On September in 1998, a microsporidian infection was recognized in ayu, Plecoglossus altivelis, farmed on Kyongnam province of South Korea. Cumulative mortality was around 10% in 10 days. Infected fish which were piping for air near the surface of the water or in the asphyxic, lethargic condition revealed darkening of body and abdominal distention. Numerous whitish nodules up to 3㎜ in size were observed throughout most of body organs and tissues including gill, operculum, peritoneal wall and organs. Xenomas were also histologically confirmed in multiple internal organs with the evidences suggesting circulatory disturbance. Based on the morphology of spore and xenoma, and the distribution of xenomas in organs and tissues, this disease was diagnosed to be a microsporidiosis caused by Glugea plecoglossi. The mortality might be deeply related to the local circulatory disturbance by xemonas rather than the mechano-chemical effect of xenomas on adjacent tissues.
조병후,최고열,이창용,김봉주 서울産業大學校 1999 논문집 Vol.50 No.2
The characteristics of cement pastes and mortars containing zeolite A were investigated. The hydration of C₃S was a little restrained in cement pastes containing Zeolite A. The cement pastes containing zeolite A also exhibited that the formation of Ca(OH)₂ decreased and the amount of macropores increased with zeolite content. The strength of the mortar admixed zeolite A was lower than that of plain and decreased with zeolite content. These results would be related to the residual NaOH in the powder of zeolite A, which had influence on the cement hydration.
정기화,조병한,김범준,임재열,김영모 대한이비인후과학회 2011 대한이비인후과학회지 두경부외과학 Vol.54 No.7
Background and Objectives Sialendoscopy is a minimally invasive technique that can be used to explore the salivary duct system and to treat obstructive salivary disease. The aim of this study was to investigate the safety and efficacy of sialendoscopy as a diagnostic and therapeutic tool for recurrent parotid swelling. Subjects and Method We retrospectively evaluated the endoscopic findings of 41 patients who underwent diagnostic sialendoscopy between August 2003 and January 2008. Interventional sialendoscopy was performed to treat any abnormalities in the ductal system. Stones were fragmented or removed by using a basket or a grasper. Strictures were dilated and mucous plugs were removed endoscopically. Results Diagnostic sialendoscopy was successfully performed in all cases. Thirty four patients underwent interventional sialendoscopy. Among them, 8 patients (23.5%) had intraductal stones and 7 patients (87.5%) were successfully treated by endoscopic removal. Stenosis of parotid duct was observed in 26 patients (76.5%). Sixteen cases (61.5%) with stenosis were dilated with balloon catheter or endoscopy sheath successfully. Patients were closely observed during the median follow-up of 42 months (1-72 months). Symptomatic relief was achieved in 20 of 26 patients (77%) in parotid stenosis. There were no recurrences of parotid stone. Six patients (23.0%) among 26 patients with parotid ductal stenosis occasionally suffered from recurred parotid swelling. Conclusion The sialendoscopy could be recommended as a useful tool for the diagnosis and treatment of recurrent parotid swelling with a minimally invasive technique.
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朴相瓚,趙炳烈 충주대 2000 한국교통대학교 논문집 Vol.35 No.2
This work has been carried out to study the mixing characteristics of solid in vibrating feeder by dispersion model.The experimental variables were particle size, particle densities, vibration amplitude and vibration frequency etc.The system consisted of two particles such that fine particles were located on the top of the coarse particles before vibratory mixing had started.It was found from this study that dispersion model can effectively explain the mixing characteristics of solid in vibrating feeder.