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응급의학과로 내원한 환자중 내원시 예상치 못했던 사망에 대한 고찰
김승렬,김상은,양혁준,정호성,박철완,이 근 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1
Patients die in the emergency department frequently ; however, there has been little about the incidence and cause of Emergency Department death in the emergency medicine literature. This study was conducted retrospectively to gain insight into the patients who die suddenly and unexpectedly in the Emergency Department(ED). A total of 360 patients were pronounced dead in the ED from 1991 through 1994 in Chung Ang Gil Hospital. Of the 360 patients, 309 (86%) were brought to the ED with cardiopulmonary resuscitation in progress or as do not resuscitation(DNR) patients, leaving 51(14%) patients who met the unexpected death criteria. Of the unexpected deaths, 32(62.7%) patients presented to the ED with either abnormal vital sign (24 of 32) or some alteration in consciousness (18 of 32), or both of them (10 of 56). Medical and surgical causes of death represented 47.1% (24 patients) and 15.6% (8 patients) of the unexpected deaths respectively. Trauma represented 19 (37.3%) of the unexpected deaths, with 14 of these being the result of motor vehicle collision. The yearly incidence of unexpected ED death is presented in numbers of deaths per 10,000 ED visits. In 1991, the incidence was 3.4, and in 1992, 1993 and 1994 those were 2.7, 2.2 and 2.1 respectively.
Duckshin Park,Keun Yul Yang,ona L. Barabad,Youngmin Cho,Wootae Jeong,Soon-Bark kwon,Kiyoung Lee 한국폐기물자원순환학회 2013 한국폐기물자원순환학회 학술대회 Vol.2013 No.2
This study characterized PM and VOC emissions from cow dung combustion in a controlled experiment. Dung from grass-fed cows was dried and combusted using a dual cone calorimeter. Heat fluxes of 10, 25, and 50 kW/m² were applied. The concentrations of PM and VOCs were determined using a dust spectrometer and gas chromatography/mass spectrometry, respectively. PM and VOC emission factors were much higher for the lower heat flux, implying a fire ignition stage. When the heat flux was 50 kW/m², the CO₂ emission factor was highest and the PM and VOC emission factors were lowest. Particle concentrations were highest in the 0.23-0.3-μm size range at heat fluxes of 25 kW/m² and 50 kW/m². Various toxic VOCs including acetone, methyl ethyl ketone, benzene, and toluene were detected at high concentrations. Although PM and VOC emission factors at 50 kW/m² were lower, they were high enough to cause extremely high indoor air pollution. The characteristics of PM and VOC emissions from cow dung combustion indicated potential health effects of indoor air pollution in developing countries.
( Duck Shin Park ),( Keun Yul Yang ),( Mona L Barabad ),( Young Min Cho ),( Woo Tae Jeong ),( Soon Bark Kwon ),( Ki Young Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2013 한국폐기물자원순환학회 추계학술발표논문집 Vol.2013 No.-
This study characterized PM and VOC emissions from cow dung combustion in a controlled experiment. Dung from grass-fed cows was dried and combusted using a dual cone calorimeter. Heat fluxes of 10, 25, and 50 kW/m2 were applied. The concentrations of PM and VOCs were determined using a dust spectrometer and gas chromatography/mass spectrometry, respectively. PM and VOC emission factors were much higher for the lower heat flux, implying a fire ignition stage. When the heat flux was 50 kW/m2, the CO2 emission factor was highest and the PM and VOC emission factors were lowest. Particle concentrations were highest in the 0.23-0.3-μm size range at heat fluxes of 25 kW/m2 and 50 kW/m2. Various toxic VOCs including acetone, methyl ethyl ketone, benzene, and toluene were detected at high concentrations. Although PM and VOC emission factors at 50 kW/m2 were lower, they were high enough to cause extremely high indoor air pollution. The characteristics of PM and VOC emissions from cow dung combustion indicated potential health effects of indoor air pollution in developing countries.
Characteristic Comparison of the Superconducting Fault Current Limiter With Various Bypass Reactors
Ki Sung Chang,Dong Keun Park,Seong Eun Yang,Young Jae Kim,Sung Yul Chu,Min Cheol Ahn,Tae Kuk Ko IEEE 2010 IEEE transactions on applied superconductivity Vol.20 No.3
<P>A resistive superconducting fault current limiter (SFCL) has two drawbacks-relatively higher impedance and longer recovery time than the requirement of the electric power system. A parallel-connected bypass reactor (BPR) can be a solution to both problems. As a stage of proof-of-concept, an SFCL comprised of an YBCO S/N switch and a Bi2223-BPR had been presented in the former paper. Although the previous one has shorter recovery time, the generated impedance after a fault was too low to satisfy the requirement of the power system. To apply the SFCL into the power system, the SFCL has proper impedance during the fault. Therefore, we proposed bypass reactors to achieve higher impedance than the previous one in this paper. The SFCLs with a bypass reactor were fabricated and short-circuit test with the SFCLs were conducted. The test results were compared in point of current limiting characteristics and recovery. This research would be applied to a conceptual design of BPR.</P>
양정훈 ( Jung Hoon Yang ),김성근 ( Sung Keun Kim ),이성열 ( Sung Yul Lee ),이종석 ( Jong Suk Lee ),박영립 ( Young Lip Park ),황규왕 ( Kyu Uang Whang ) 대한피부과학회 2010 大韓皮膚科學會誌 Vol.48 No.5
Mucormycosis is a rare invasive fungal infection that chiefly occurs in immunocompromized patients and the outcome is generally fatal. Primary cutaneous mucormycosis is a rare phenotype of mucormycosis, and it usually follows direct inoculation of fungi on damaged skin. Many cutaneous infections mimic sprotrichosis, including virus, bacteria, acid-fast bacilli, fungi and protozoa, yet mucormycosis is very rare. We report on a case of cutaneous mucormycosis that mimicked sporotrichosis in a 77 years old woman. (Korean J Dermatol 2010;48(5):449~452)
홍성준(Seong Jun Hong),구양훈(Yang Hun Koo),배영환(Young Hwan Bae),한병훈(Byung Hoon Han),지상근(Sang Keun Ji),김기환(Ki Hwan Kim),안수열(Su Yul Ahn),이상욱(Sang Uk Lee),박병채(Byung Chae Park) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.5
N/A Background/Aims: A number of studies have shown an increased prevalence of gallstones in patients with coronary heart diseases. Since it has also been known ihat the high density lipoprotein cholesterol(HDL-C) is an important protective factor against coronary artery diseases, one may speculate the possibility that HDL-C may play a role in preventing the gallstone formation, so we tried to identify this role of HDL-C. Methods: We analysed 165 patients who received cholecystectomy due to cholecystitis with gallstones. Their serum lipid profiles and body mass index(BMI) were measured and compared with normal control persons. We adjusted the age and sex distribution in normal control group to the patient group. Results: Among 165 cases, the prevalences of whitish yellow stones, brown pigmented stones and dark pigmented stones were '21.2%, 60% and 18.2%, respectively. In the patients group, the mean age was 53.7+11.5 years and the ratio of male to fema]e was 1:1.6. BMI was significantly higher in the patient group(24.7+ 7.5kg/m )as compared to normal control group(21.9 ' 5.6kg/m, p<0.005). No differences were observed in the serum level of total cholesterol, triglyceride(TG), HDL-C, low density lipoprotein cholesterol(LDL-C), and the ratio of HDL-C to total cholesterol between the patient and control group. However, tbe old aged group, more than 50 years showed that the serum level of HDL-C, HDL-C/total cholesterol were significantly higher than in the group of normal population(48.3+ 18.0mg/dL, 0.30+0.12) than in tbe patient group(43.4+13.3mg/dL, 0.26 0.09, p<0.005), and obese persons(BMI>25kg/m ) showed that their levels were significantly higher in the normal population group(53.0+9.5mg/dL, 0,30+0.08) than in the group of gallstone patients(43.3+ 1.7mg/dL, 0.24>0.07, p<0.005) also. Conclusions: Decreased serum level of HDL-C, HDL-C/total cholesterol might be a causative factor of gallstone formation in the obese or old aged group. (Korean J Gastroenterol 1996; 2S:683 - 6S9)
국가 연구개발사업 성과물의 실용화 방향 : 미래형 도시교통시스템을 중심으로
이경철(LEE Kyung-Chul),양근율(YANG Keun-Yul),황영진(HWANG Young-Jin) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-
In Korea, as in other developed countries, new urban transportation system development projects are underway through national R&D projects. For its final objectives, it becomes more and more important to put the products of R&D projects in use, with the government policies. In this context, the authors of this article suggest, 1) to define a development system, or favorable environment, adequate for the new urban transportation systems for its application and 2) to complement actual regulations on the new transportation technology and trial running based on the law related to the more efficient transportation system.