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신준섭,최옥경,정구영 대한응급의학회 1996 대한응급의학회지 Vol.7 No.2
Paraquat(1,1-dimethyl-4,4-bipyridium dichloride) is lethal herbicide and it is thought to act by turning into superoxide and peroxide free radical in the presence of reducing agents. Among the multiple organ failure, the pulmonary complication is always fatal. We present the case of a patient with subcutaneous emphysema and pneumomediastinum without pneumothorax on 6days later after acute paraquat ingestion. A 28 years old female patient was admitted ED at 10:40 on September 8, 1995(Day 1) after ingestion of 10cc-15cc of paraquat (20% solution) at 20:00 on yesterday. By the sodium dithionite test, the presence of paraquat was negative in the urine. She was alert without oropharyngeal ulceration and had stable vital signs. Her hepatic function was moderately deteriorated (SGOT/SGPT 389/867, ALP 233, TB 5.7) and the others laboratory findings were normal limits. She was transferred to ICU and treatment was according to a our protocole(Table 1). On day 6, she complainted numbness on the right lateral neck and respiratory difficulty. The chest X-ray showed subcutaneous emphysema, pneumomediastinum and pneumomediastinum without pneumothorax. Day after day, the size of subcutaneous emphysema and pneumomediastinum were decreased on chest x-ray and it was not found inflammatory signs. The chest CT showed pulmonary fibrosis on the both lower lung field(onday 10) and the esophagography showed no specific findings without dye leakage(on day 14). On day 16, The high resolution chest CT was showed diffuse pulmonary opacity with cystic lesions and peribronchovascular air densities were found with pericardial emphysema and pneumomediastinum. At 4:30 a.m. on day 18, the respiratory arrest was developed and she was expired at 4:35 a.m. under DNR.
적외선 흡수 분광법 및 DPC를 이용한 치과용 수복재의 광중합 거동 분석
정찬문,김중곤,최준호,장두옥,김경남,김광만 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.1
Mechanical properties of compomers would be obtained mainly by photopolymerization by visible light irradiation. Photopolymerization behavior of two commercial compomers was investigated by FT-IR spectral analysis and differential photocalorimetry(DPC). The results obtained were as follows: 1. From FT-IR analysis, it was found that the compomer products were photocured mainly by radical polymerizations of multifunctional methacrylate monomers. Final conversion values of the polymerizations after exposure to visible light for 60 sec were 67% for Dyract and 59% for Compoglass. 2. Upon exposure the compomers exhibited autoacceleration and autodeceleration, which are usually observed in bulk polymerizations of multifunctional monomers. 3. Dyract showed higher rate of polymerization and conversion of double bond than Compoglass.
Aphelenchus avenae and Antagonistic Fungi as Biological Control Agents of Pythium spp.
Jun, Ok-Kyoung,Kim, Young-Ho The Korean Society of Plant Pathology 2004 Plant Pathology Journal Vol.20 No.4
To examine the control effect of damping-off on radish caused by Pythium spp., researchers used the isolates of a fungivorous nematode, Aphelenchus avenae, and antagonistic fungi, Trichoderma spp. These were used as biocontrol agents, either alone, or in combination. Growth rates of the A. avenae isolates and fungal damages by the nematodes varied depending on Trichoderma spp., which contained lower T. koningii and T. virens cultures than other Trichoderma cultures. Phythium spp. were damaged by all five Aphelenchus isolates, but the multiplication rate of nematode isolate Aa-3 was very poor. Antibiotic activity of T. virens and T. harzianum to Pythium spp. was stronger than that of T. koningii. Control efficacy against damping-off of radish was most enhanced under the treatment using the nematode-T. harzianum combination. On the contrary, the combinations of the nematodes and T. virens or T. koningii mostly did not increase or decreased their control effect vis-$\`{a}$-vis that of the nematodes or antagonistic fungi being used alone. The results suggest that the fungivorous nematodes may play a leading role in the disease control, and that the activity of the fungivorous nematodes may be activated by T. harzianum, but inhibited by T. koningii and T.virens.
( Kyoung Min Moon ),( Ga Eun Kim ),( Soon Koo Baik ),( Eun Hee Choi ),( Moon Young Kim ),( Hyoun A Kim ),( Mee Yon Cho ),( Seung Yong Shin ),( Jung Min Kim ),( Hong Jun Park ),( Sang Ok Kwon ),( Young 대한간학회 2013 Clinical and Molecular Hepatology(대한간학회지) Vol.19 No.4
Background/Aims: We compared the cirrhosis-prediction accuracy of an ultrasonographic scoring system (USSS) combining six representative sonographic indices with that of liver stiffness measurement (LSM) by transient elastography, and prospectively investigated the correlation between the USSS score and LSM in predicting cirrhosis. Methods: Two hundred and thirty patients with chronic liver diseases (187 men, 43 women; age, 50.4±9.5 y, mean±SD) were enrolled in this prospective study. The USSS produces a combined score for nodularity of the liver surface and edge, parenchyma echogenicity, presence of right-lobe atrophy, spleen size, splenic vein diameter, and abnormality of the hepatic vein waveform. The correlations of the USSS score and LSM with that of a pathological liver biopsy (METAVIR scoring system: F0.F4) were evaluated. Results: The mean USSS score and LSM were 7.2 and 38.0 kPa, respectively, in patients with histologically overt cirrhosis (F4, P=0.017) and 4.3 and 22.1 kPa in patients with fibrotic change without overt cirrhosis (F0.F3) (P=0.025). The areas under the receiver operating characteristic (ROC) curves of the USSS score and LSM for F4 patients were 0.849 and 0.729, respectively. On the basis of ROC curves, criteria of USSS ≥6: LSM ≥17.4 had a sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of 89.2%:77.6%, 69.4%:61.4%, 86.5%:83.7%, 74.6%:51.9% and 0.83:0.73, respectively, in predicting F4. Conclusions: The results indicate that this USSS has comparable effi cacy to LSM in the diagnosis of cirrhosis.