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안호근,최병민,김병훈 順天大學校 1999 論文集 Vol.18 No.1
The recovery of the platinum group metals on the spent automotive catalysts is economically very important because of their high value and stable supply, but the spent autocatalysts still keep the inherent oxidation activity. The regeneration method was studied by treating with various acid solutions and/or air stream, the regenerated activity was investigated in the ethylene oxidation in a flow reactor. The oxidation activity showed maximum at 0.01vol% HNO₃solution, and was decreased with increasing the HNO₃concentration because the active metals or supports were dissolved into acid solution. Also, the activity was enhanced with increasing the air treatment temperature, and decreased at higher temperature than 300℃. The maximum activity was obtained at 300℃. Therefore, the oxidation activity of the spent autocatalysis could be effectively regenerated by the treatment of nitric acid solution and air stream.
김민근,주혜원,강경필,최병돈,박민석,변영섭,고충원,이건주,김병옥 인제대학교 2006 仁濟醫學 Vol.27 No.-
Acute myocardial infarction(AMI) due to coronary embolism can occur in patients with normal coronary artery. Coronary embolism is believed to be a cause of acute myocardial infarction when emergent coronary angiography shows perfectly normal coronary trees, except for the finding of coronary artery occlusion. In this report, we describe four patients with AMI due to coronary embolism who were successfully treated using a thrombus aspiration device and anticoagulation, and those patients had intracardial thrombus arising from the left atrium due to chronic atrial fibrillation and valvular heart disease. Patients with chronic or paroxysmal atrial fibrillation can present with AMI due to coronary embolism, and thrombus aspiration with percutaneous aspiration device is a feasible treatment option for these patients along with anticoagulation the rapy.
Narrow Band UVB로 치료한 진행성 반상 저색소증 1예
김병대,정예리,이근수,한승경 대한피부과학회 2003 대한피부과학회지 Vol.41 No.12
Progressive macular hypomelanosis is an idiopathic acquired hypopigmentary disorder first descri-bad in 1988. The disorder is characterized by ill-defined, non-scaly, round to oval, hypopigmented patches symmetrically localized on the trunk. No clinical symptoms have been observed. Currently, diagnosis is made on clinical grounds and any histological, laboratory investigations are not diagenositc. This disorder does not respond to conventional treatment and its clinical course is variable. We experienced a case of progressive macular hypomelanosis that was successfully treated with narrow band UVB phototherapy. (Korean J Dermatol 2003;41(12):1664~1666)
金亨圭,安秉根 경북대학교 교육대학원 1990 논문집 Vol.22 No.-
Absolute poverty is commonly defined as a situation in which basic needs for physical survival are not sufficiently satisfied. For example, S. Rowntree(1901) defined families as being in 'primary poverty' if their total earnings are insufficient to obtain the minimum necessities for the maintenance of merely physical efficiency. On the other hand, definitions of poverty in relative terms are based on norms that attempt to take express account of actual deprivation with respect to average levels of needs satisfaction in the society in question. In this relativist view, there are three major points of view:①theory of relative deprivation(townsend, 1974), ②defining poverty as the fraction of mean income or median income(Atkinson, 1975, Fuchs, 1967) and ③defining poverty as a certain lowest percentile of the income distribution(Miller and Roby, 1971). One thing does seem to have clearly established:namely, that there must be a relative definition of poverty. The only person seriously to have questioned is Sen(1983) who presents a case for an absolutist approach. He had outlined the case for using an absolute approach to poverty related to the notion of capability and argued that the dispute on absolute vs. relative conceptualisation of poverty can be better resolved by being more explicit on the particular space (3.g., commodities, incomes, or capabilities) in which the concept is to be bases.
이상윤,라병욱,박동수,황인헌,이덕동,신영남,박성배,이동욱,박용석,박형근,손상호,권태근,채경락,정경득 慶北大學校 自然科學大學 1986 自然科學論文集 Vol.4 No.-
An Ac-type Plasma Display Panel (PDP) operating with Ne-Ar(0.1%) Penning mixture gas is fabicated. The characterics of the panel with electrodes covered with thin and thick dielectric layers are studied. The brightness of the Neon-orange light emitted by the panel measured as function of applied voltage and frequency. As an application, a graphic display system equipped with PDP showing still and moving pictures is made.
저주파음에 의한 자리돔, Chromis notatus의 청각 능력 : 청각 문턱치
이창헌,서익조,오승훈,김병엽,서두옥,김동근 제주대학교 해양과환경연구소 2001 해양과환경연구소 연구논문집 Vol.25 No.-
In order to obtain the fundamenal data about method of luring fish schools by underwater sound, this experiment was carried out to investigte the auditory threshold of coralfish Chromis notatus which was on the coast of Jeju island by heartbeat conditioning technique using pure tones coupled with a delayed electric shock. The coralfish could hear a sound in the frequency range from 80 ㎐ to 800 ㎐. The mean auditory thresholds of coralfish at the frequencies of 80 ㎐, 100 ㎐, 200 ㎐, 300 ㎐, 500 ㎐ and 800 ㎐ were 100 ㏈, 99 ㏈, 91 ㏈, 88 ㏈, 96 ㏈ and 114 ㏈, respectively. As the frequency became higher than 300 Hz the auditory threshold increased rapidly.