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김영준,정환영,김남규,김광명 대한신경외과학회 1987 Journal of Korean neurosurgical society Vol.16 No.4
The 4 cases of myelopathy due to ossification of the ligamentum flavum are reported. This disease is often misdiagnosed by the central disc herniation, cauda equina tumor or lower motor neuron disease. The most useful diagnostic procedure is the computerized tomographic myelography. The sufficient decompressive laminectomy and facetectomy is a treatment of choice.
김영준,오석전,유영락,김남규,정환영 대한신경외과학회 1986 Journal of Korean neurosurgical society Vol.15 No.3
The authors operated 127 cases of the spontaneous intracerebral hematoma patients who were admitted via the emergency room during the recent two years. The location, timing of operation, method of approach, mortality etc. were analyzed. The results are as follows: 1) putaminal hemorrhage was 47.3%, thalamic hemorrhage was 23.6%, subcortical hemorrhage was 18.9%, cerebellar hemorrhage was 3.9%, pontine hemorrhage was 1.6%, and IVH only was 4.7%. 2) 77.2% was operated during the first 48 hours from the onset. 3) Almost all of the procedures were transcortical and trans-sylvian approach. 4) The mortality rate was 52.0%. 5) Microsurgical technique and external ventricular drainage (or ventriculoperitoneal shunt) played an important role for the good surgical outcome.
벼 현탁배양을 통하여 분리된 원형질체로부터 식물체 재분화
정병균(Byung Gyun Jung),안준철(Jun Cheul Ahn),고경민(Kyeong Min Ko),김영준(Young Jun Kim),황성진(Sung Jin Hwang),황백(Baik Hwang) 한국식물학회 1993 Journal of Plant Biology Vol.36 No.3
Plant regeneration was accomplished from protoplast culture of rice (Oryza sativa L., cv. Taebaeg). Embryogenic callus was induced from mature seed on MS medium containing 5 mM proline, 2.5 mg/L 2,4-D, 30 g/L sucrose in the dark at 28℃ and used to establish embryogenic cell suspension culture. Suspension cells were subcultured every one week in N6 medium supplemented with 5 mM proline, 200 mg/L casein hydrolysate, 2.5 mg/L 2,4-D and amino acids of AA medium. Suspension cultures were composed of cells that were densely cytoplasmic, potentially embryogenic and were at least maintained for more than 6 months in liquid medium. Protoplasts were isolated from fast-growing suspension culture cells and cultured in a slightly modified KpR medium by mixed nurse culture. Isolated protoplasts began to divide within 5∼7 days and thereafter, protoplast-derived calli were sequentially transferred to callus proliferating medium that soft agar MS medium contained 2㎎/L 2,4-D and produced distinct embryogenic cells. Microcolonies were then transferred to solid medium which consisted of MS medium containing 5 mg/L kinetin, 1 mg/L NAA, 1 mg/L ABA, 30 g/L sucrose and 10 g/L sorbitol under fluorescent light. Multiple shoots of 4∼5 per callus emerged and were transeferred to hormone-free MS medium for root initiation. Thereafter, The plantlets were transferred to pots of soil to mature in the culture room.
정영모 ( Young Mo Jung ),김영준 ( Young Jun Kim ),문희규 ( Hi Gue Moon ),김수민 ( Soo Min Kim ),신범주 ( Beom Ju Shin ),이주송 ( Joo Song Lee ),서민아 ( Min Ah Seo ),이택진 ( Taik Jin Lee ),김재헌 ( Jae Hun Kim ),전성찬 ( Seong Ch 한국센서학회 2014 센서학회지 Vol.23 No.5
We report a way to improve the ability of graphene to operate as a gas sensor by applying single stranded deoxyribonucleic acid (DNA). The sensitivity and recovery of the DNA-graphene sensor depending on the different DNA sequences are analyzed. The different sensor responses to reactive chemical vapors are demonstrated in the time domain. Because of the chemical gating effect of the deposited DNA, the resulting devices show complete and rapid recovery to baseline unlike the bare graphene at room temperature. The application of the pattern recognition technique can increase the potential of DNA-graphene sensors as a chemical vapor classifier.