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배상훈 ( Sang Hoon Bae ),김동현 ( Dong Hyun Kim ),배영석 ( Young Seok Bae ),이광재 ( Kwang Jae Lee ),김동완 ( Dong Wan Kim ),윤정빈 ( Jeoung Bin Yoon ),홍준호 ( Joon Ho Hong ),김상현 ( Sang Hyun Kim ) 대한간학회 2010 Clinical and Molecular Hepatology(대한간학회지) Vol.16 No.2
Toxic hepatitis has been reported as a major cause of acute hepatitis, but its potential induction by herbal remedies and/or health foods is usually neglected. We experienced a case of toxic hepatitis associated with Polygoni multiflori, a Chinese herb commonly known as Ho-Shou-Wu. A 54-year-old woman consumed Ho-Shou-Wu for 1 month, after which she experienced fatigue and overall weakness. A diagnosis of toxic hepatitis was made based on her clinical history, the findings for viral markers and other laboratory data, and ultrasonography. Her condition improved considerably after she stopped taking Ho-Shou-Wu. However, she resumed taking Ho-Shou-Wu immediately after discharge from hospital, which aggravated her symptoms and liver function. She was immediately readmitted and stopped taking Ho-Shou-Wu. Her relapse into hepatitis immediate after resuming consumption of the herb is strongly indicative of the validity of Koch`s postulate in this case.
The effects of sequencing batch reactor (SM-SBR) process operation methods on membrane separation character and removal efficiency of organics and nutrients were investigated to minimize the membrane contamination and for simultaneous removal. The operation pressure of membrane separation was controlled to be maintained lower than critical permeable flux to minimize the membrane contamination which was defect of membrane bioreactor (MER) process. The contaminated was intermittently fed into membrane to extend operation period. When SM-SBR process operation cycle was 6~12 hr/cycle, the contamination of membrane was decreased and the operation period could be extended. Also the removal efficiencies of total nitrogen and total phosphorus were improved. The removal efficiency of organic matter was over 90% for all operation cycles. From these results, the SM-SBR process, use simultaneous removal of organics and nutrients, developed in this study can be used for small scale water recycle system.
In this study, the submerged type membrane separation process was coupled to a sequencing batch reactor (SBR) which is one of the biological nutrient removal process and named it submerged membrane-sequencing batch reactor (SM-SBR). One experiment was conducted to investigate the operating schedule on transmembrane pressure, the other experiment were conducted to investigate that on organic and nutrient removal. The result when HRT 24hr(8hr/cycle) of SM-SBR in the experiment was showed the best removal efficiency of nitrogen and phosphorus.
This study was carried out to evaluate the effects of the mixing/aeration distribute time, the repeat cycle of mixing/aeration, for the removal of nitrogen and phosphorus in wastewater by SBRs(Sequencing Batch Reactors). The SBR systems were operated with fill, mixing, aeration, settling and draw periods for a cycle time of 12hr. The result of experiment when mixing/aeration distribute time controlled 3hr-mixing, 6hr-aeration and 5hr-mixing, also a repeated operation 3 times mixing/aeration in the process, was showed the best removal efficiency of nitrogen and phosphorus.