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李春鎬,徐憲全 全北大學校 1980 論文集 Vol.22 No.-
The TSEE glow curve of BeO irradiated to X-ray was obtained by using 2π gas flow GM counter, and the temperature, which was recorded as a function of time, raised at the rate of 0.7℃ per second from 20℃ to 500℃. It was found that there are three peaks of TSEE glow curves at 505, 632 and 710˚K. The values of trap depth and frequency factor for three peaks was obtained by using the method of Kelly-Laubitz and De Muer. Following the analysis of De Muer, the evaluated values of σ_2/σ_1 has been found to satisfy the limit 0<σ_2/σ_1<1, which corresponds to the first order like process of Kelly-Laubitz analysis. The dosimetric characteristic curve of BeO for the peak at 505˚K appears to be a good linear is the dose range from 2×10^-3 mr to 1×10^-1 mr and there is no any fading at room temperature.
페카리 종 Tayassu tajacu에서 내인성 리트로 바이러스의 발견 : Tayassu Tajacu
이준헌 충남대학교 농업과학연구소 2003 농업과학연구 Vol.30 No.1
본 연구는 페카리와 돼지간의 내인성 리트로 바이러스의 연관성을 조사하기 위하여 실시되었으며 페카리의 리트로 바이러스의 DNA 염기서열을 알기위해 degenerate primers를 이용하였다. 두개의 리트로 바이러스의 클론이 이 연구에 의해 만들어졌으며 DNA 염기서열을 분석하여 본 결과 기존에 알려진 쥐와 돼지의 리트로 바이러스 염기서열과 높은 상동성을 보였다. 이 페카리 리트로 바이러스는 페카리 종에 있어서 처음으로 밝혀진 내인성 리트로 바이러스인 동시에 페카리 종은 C형 리트로 바이러스 염기서열을 가지고 있지 않다는 기존의 연구결과와 상반된 것으로 그 중요성이 있다. To investigate the relationship of endogenous retroviruses in peccaries and pigs, a set of degenerate primers was used in this study to amplify peccary retroviral sequences. The sequences of two putative retroviral clones showed close homology to mouse and pig retroviral sequences. The peccary endogenous retroviral sequences are significant in that they are the first such sequences reported in peccary species and repudiate old claims in the literature that peccaries do not have C-type retroviral sequences.
밤나무林 經營의 問題點에 關한 硏究 : 楊平郡을 中心으로 With a focus on Yang -p'yo^ng Gun in Kyonggi
李相植,全俊憲 동국대학교 대학원 1988 大學院硏究論集-東國大學校 大學院 Vol.18 No.-
This study was carried out in order to improve the management of chestnut orchard. This study was carried out through questionaires and replied 40 papers were analysed by the percentage-system. The results of this study are as follows; 1. For the purpose of efficient utilization of forest, forest greening. and enhancement of local farmers income, the chestnut cultivating project started as one of encouraging policies by government was short of the original intention 2. The scale of chestnut cultivating orchards constitute 48.1% of 1.1 to 3 hectares and 27.6% of 1 hectare downward reaching 75% of total surveyed farmers. 3. Chestnut cultivating orchards coming to 60% of total surveyed farmers are likely to reduce the cultivating scale in future, because of price markdown, unbalance of income and outgo, technical failture, labor-power shortage. 4. The difficulties on chestnut cultivating management were in order of the following; labor-power shortage(23.8%), economity(26.0%), disease and pest damage(18.8%), management(16.2%), inferiority of site condition(8.7%), circulating structure(5.0%), technical acquirement(5.0%). 5. Yields of chestnuts differed greatly between the same cultivating scales, once an orchard is established, tending the orchard is the most important factor in cultivation. 6. The measures for the improvement of chestnut cultivating orchards management are schemed supply and price control, domestic consumption enhancement, enlargement of chestnut manufacturing, and it is desirable to give economity by managing effectively to chestnut orchards in farmer, and to improve circulating structure and provide guidance and training to chestnut cultivating farmers in the offices.
간경변 환자에서 콜히친 사용에 의한 호중구성 백혈구감소증 1예
이호찬,이헌주,김용길,박재현,김성준,박준석 영남대학교 의과대학 2009 Yeungnam University Journal of Medicine Vol.26 No.2
Colchicine is an alkaloid that has been used for treating acute gouty arthritis, psoriasis, scleroderma and Behcet's syndrome. Colchicine decreased liver fibrosis in rats with carbon tetrachloride induced cirrhosis and in patients with many liver diseases. Therapeutic oral doses of colchicine may cause nausea, vomiting, abdominal pain and diarrhea. The adverse effect of colchicine associated with the dose is bone marrow suppression, and especially neutopenia. Neutropenia has often been reported in patients have taken an overdose of colchicine. We describe a 64-year-old female liver cirrhosis patient with neutropenia that was induced by a therapeutic dose of colchicine.
이호연,오헌진,전재식,오희필,양재춘,정문규,박해용 대한방사선 방어학회 1986 방사선방어학회지 Vol.11 No.2
중성자와 우라늄의 핵반응에 의해 생성된 핵분열생성물의 물리적 특성을 이용하여 원자로 내의 핵연료 상태를 해석하는 모델을 개선하였다. 이 모델에서는 고체 핵연료 내에서 특정핵종의 핵분열 생성물의 생성과 이것이 원자로 냉각재까지 방출되는 과정을 계산하고 추적하며 방사능농도와 결합핵연료봉의 수를 관계짓는 방정식의 계수들을 결정한다. 핵분열생성물의 거동은 이탈(knock out)과 이동(migration) 두 부분으로 나누어 해석하였으며 트램프 우라늄의 영향을 분리할 수 있도록 하였다. 실측자료로는 가압 경수형 원자로인 고리 원자력발전소 1호기의 1차 냉각제를 분석해서 얻은 I-131과 I-133의 방사능 강도를 이용하였다. 이 실험자료와 위 방정식에서 구한 방사능 강도로부터 구한 결함 핵연료의 수는 제3주기에서 9.34±1.13개 제6주기에서 0.294±0.092개로 나타났다. An improved method of assessing fuel status by analysis of the fission product in the reactor coolant system is proposed. The release mechanism of specific fission products is established for determination of the coefficients in the equations which relate the radioactivities with the amount of defected fuel. Knock-out and migration models are employed in the formulation of the release mechanism. The influence of the tramp uranium is quantified. Sample calculations were made for KNU 1 reactor system using the I-131 and I-133 concentrations in the primary coolant. The estimated number of defected fuel pins in the third and sixth cycles appeared to be 9.34±1.13 and 0.294±0.092, respectively.
이헌영,김병호,정현용,김영건,조준식 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2
Hepatocellular carcinoma(HCC) is the second most common cause of cancer death in Korea. Generally, HCC was unresectable due to the frequently associated cirrhosis and advanced stage of tumor. As a palliative therapy of HCC, transcatheter arterial chemoembolization(TACE) was a proven effective mean of treating inoperable HCC. We have analyzed the effectiveness of TACE in inoperable HCC. TACE was performed in 20 patients from January in 1990 to May in 1993 at Chung Nam National University Hospital with the infusion of mixture of Lipiodol and Adriamycin. We analyzed the survival rates of the TACE group and the control group who received no specific treatment. The results were follows ; 1) The survival rate was significantly higher in TACE group than control group(p<0.01). The survival rate at the end sixth months and one year were 62.8% and 40.0% in TACE group, 26.6% and 0% in control group, respectively. 2) A declining level of AFP(Alph-fetoprotein) was shown in 8 among 10 cases who underwent TACE/and was higher than 500 ng/ml in pre-TACE level(p<0.01) and also tumor size was decreased in 7 among 20 cases who underwent TACE. 3) Side effects were fever(80.0%), and upper abdominal pain(75.0%) in TACE group but improved within 7 days after TACE and impairment of liver function was developed in most patients(TACE group) but improved within 2 weeks after TACE. As a palliative therapy of HCC, TACE is an effective and useful modality in treating and prolonging the survival time of patients with unresectable hepatocellular carcinoma.
열처리가 Teflon^(??) FEP film의 전하보존특성에미치는 영향
김성준,이현석,김지균,권정열,이헌용 명지대학교 산업기술연구소 2007 産業技術硏究所論文集 Vol.26 No.-
In this paper, we studied the method of electrets electrode which formed to accumulate negative electric charges by corona discharges. The breakdown voltage samples and damaged samples by various corona discharges have made material stabilization and improved characteristics of electric charge storage throughout the annealing processes. After the experiment made material stabilization nearly melting point by many kinds of annealing conditions, we did the corona discharge again by the charged high voltages, a discharge electrode gap, and a discharged time. As we compared it with the best condition, we confirmed that characteristics of electric charge storages were improved.