http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김재건(Jae Gun Kim),고태조(Tae Jo Ko),김희술(Hee Sul Kim),정병묵(Byoung Muk Chung) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
After the micro turning lathe was developed in the last year by AMR Laboratory in Yeungnam university, a micromilling<br/> machine is developed for micro/meso machining. This machine is integrated with PZT-driven micro-sliders,<br/> micro-linear encoders, aerostatic spindle which has maximum 150,000 rpm. It is applicable to milling and drilling of<br/> micro scale. This paper presents the possibility of micro/meso machining and characteristics of micro end milling process<br/> by using micro machine. A machining of micro parts using 0.2 mm flat end mill was achieved by micro-milling machine.<br/> Experimental results show the machining capability and positional accuracy of this machine is good enough for machining<br/> micro parts.
저체온요법 치료 환자에서의 두개강내와 액와부의 온도차이
유도성,김달수,허필우,조경석,김재건,박춘근,강준기,Yoo, Do-Sung,Kim, Dal-Soo,Huh, Pil-Woo,Cho, Kyung-Suck,Kim, Jae-Gun,Park, Chun-Kun,Kang, Joon-Ki 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.7
Objective : The brain temperature is about $0.4-1^{\circ}C$ higher than that of the other peripheral body area. But most of these results have been obtained in normothermic condition. The objective of this study is to evaluate the temperature difference between the brain and axilla, in patients under hypothermia. Methods : Sixty-three patients(37 women and 26 men) who underwent craniotomy with implantation of the thermal diffusion flowmetry sensor were included in this study. The temperature of the cerebral cortex and axilla was measured every 2 hours, simultaneously. The patient group was divided according to axillary temperature hyperthermia( over $38^{\circ}C$), normothermia($36-38^{\circ}C$) and hypothermia(under $36^{\circ}C$). Total 1671 paired sample data were collected and analyzed. Results : The temperature difference between the cerebral cortex and the axilla was $0.45{\pm}1.04^{\circ}C$ in hyperthermic patients, $0.97{\pm}1.1^{\circ}C$ in normothermic patients and $1.04{\pm}0.81^{\circ}C$ in hypothermic patients. The temperature difference has statistical significance in each group(unpaired t-test, p<0.05). Conclusion : From our study the temperature difference between the brain and the axilla in hypothermic condition increased more than that of normothermic state. And in hyperthermic condition, the temperature difference decreased.
김영진(Young-Jin Kim),김재건(Jae-Gun Kim),김종오(Jong-Oh Kim) 한국환경관리학회 2015 環境管理學會誌 Vol.21 No.1
서울지역의 일부 종합병원의 방류수에서 penicillin G/ciprofloxacin 내성균의 빈도, 종류, 내성균의 항생제 spectrum을 조사하였다. 조사된 종합병원에서 높은 농도의 잔류염소가 검출된 한 곳을 제외하고는 종속영양세균의 빈도는 7.4×10⁴∼1.7×10<SUP>7</SUP> CFU/mL, 총대장균군은 2.5×10²∼2.5×10³ CFU/mL이었다. Penicillin G/ciprofloxacin 내성균의 빈도는 4.7×10∼8.0×10² CFU/mL이었다. 확인된 6개 균주가 8종 이상의 항생제에 대해 내성을 보이고 있다. 특히 L. adecarboxylata는 사용된 14종의 항생제에 대해 내성을 보이고 있어 병원 방류수중에 존재하는 세균의 항생제 내성의 심각성을 알 수 있다. 이들 다제 내성균들은 감염의 유병률, 사망률 및 치료의 경제적 비용이 상당할 뿐만 아니라, 내성유전자의 보관소로 작용할 수 있다고 알려지고 있어 이들에 의한 감염에 주의하는 것이 필요하다. This study aims to understand concentration, diversity, and antibiotic characteristics of Penicillin G/ciprofloxacin resistant bacteria that were present in hospital effluents. Water sampling was performed from four general hospitals in Seoul, Korea on December, 2014. Water samples were plated in triplicate on tryptic soy agar plates with Penicillin G/ciprofloxacin 30 mg/L and 10 mg/L, respectively. Penicillin G/ciprofloxacin resistant bacteria were selected from hospital effluents, and they were subjected to 16S rRNA analysis for the Penicillin G/ciprofloxacin-resistant species determination. Identified resistant strains were tested for resistance to various antibiotics. Penicillin G/ciprofloxacin resistant bacteria were present 0.005∼0.063% as to culturable heterotrophic bacteria. Most of penicillin G/ciprofloxacin-resistant bacteria exhibited resistant to more than 8 antibiotics studied. Most of these resistant bacteria are gram negative and are closely related to pathogenic species. These results suggest that multi-antibiotic resistant bacteria in hospital effluents has a close relation to the reckless use of antibiotics in hospitals.
김영우,유도성,김달수,허필우,조경석,김재건,강준기,Kim, Young-Woo,Yoo, Do-Sung,Kim, Dal-Soo,Huh, Pil-Woo,Cho, Kyung-Suck,Kim, Jae-Gun,Kang, Joon-Ki 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.2
Objective : Cranioplasty is required to protect underlying brain, to correct major aesthetic deformities, or both. The ideal material for this purpose is autogenous bone. When this is not available, alloplastic or artificial materials may be used. In this study authors compared the infection rate according to the cranioplasty materials(the frozen autologous bone vs. bone cement), and duration of the skull defect. Materials : Between May 1994 and December 1999, 111 patients with skull defect treated with cranioplasty(82 cases of frozen autologous bone and 29 cases of artificial bone material) were included in this study. There were 77 males and 34 females with a mean age of 41.4 years(range 1-85 years). 57 patients had head trauma and 54 had non-traumatic insults. According to the duration of skull defect, there were 28 cases under 1 month, 33 cases of 1-2 months, 15 cases of 2-3 months, 20 cases of 3-6 months and 15 cases over 6 months of duration. Results : Overall infection rate was 9.9%. In cases with frozen autologous bone and artificial bone material, the infection rate was 8.5% and 13.7%, respectively. The infection rate according to the duration of skull defect was 3.6%(among 28 cases) under 1 month of age, while those were 12%(4 among 33 cases) at 1-2 months, 20%(3 among 15 cases) at 2-3 months, 5%(1 among 20 cases) at 3-6 months and 13%(2 among 15 cases) over 6 months. Accoring to the underlying disease, the infection rate in traumatic cases was 12%(7 among 57 cases) and that in non-traumatic one was 3.7%(2 among 54 cases). Conclusion : From this study, it appears that skull defect should be repaired as soon as possible, because early cranioplasty can lower the infection rate. And surgeons could save the patients' cranial bone as possible as they can because autologous bone is not only cost effective in cosmatic purpose but lower the infection rate.