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암모니아와 물 존재 하에서 전자빔조사에 의한 SO₂ 및 NO_x의 동시제거를 위한 연속건식공정
배준석,김혜영,김병남,원양수,한도훙 한국공업화학회 2004 응용화학 Vol.8 No.2
An electron beam radiation technology was adapted to remove SO₂ and NO_(x) simultaneously, which leaded to the production of an ammonium sulfate and an amonium nitrate in an existence of ammonia and water or ammonium hydroxide. Removal efficiencies of both SO₂ and NO_(x) were influenced by irradiated dose, inlet gaseous temperature and concentrations of water and ammonia (or ammonium hydroxide). The removal efficiency of SO₂ and NO_(x) could reach up to 95% at 10 - 20 kGy, when adding ammonia or ammoniun hydroxide with at least more than the stoichiometric ratio based on SO₂ and NO_(x) concentrations. In gas flow rates ranged from 2.5 to 20 liter/min, the removal efficiencies of SO₂ and NO_(x) showed nearly unchangeable values. The optimum reaction temperature were ranged from 90 to 100 ℃.
배준석,Ashwin Sathe,이세민,Alexander A. Theologis,Vedat Deviren,이상호 대한척추신경외과학회 2021 Neurospine Vol.18 No.3
Objective: The purpose of this study was to investigate the changes in spinopelvic parameters before and after the setting of muscle fatigue along with its correlation with pre-existing paraspinal and psoas muscle mass. Methods: Single-center retrospective review of prospectively collected data was conducted on 145-adults with symptomatic loss of lumbar lordosis (LL). Radiographs were taken before and after walking for 10 minutes. Magnetic resonance imaging was used to calculate paraspinal muscle (PSM) cross-sectional area (CSA), mean signal intensity, fatty infiltration (FI), and lean muscle mass at thoracolumbar junction (T12) and lower lumbar level (L4). Psoas CSA was calculated at L3. Patients were divided into 2 groups namely compensated sagittal deformity (CSD) (SVA ≤4 cm, PT>20°) and decompensated sagittal deformity (DSD) (SVA>4 cm, PT>20°) based on prewalk measurements. Results: Initial mean SVA was 1.8 cm and 11 cm for CSD and DSD respectively (p<0.01). After walking, significant deteriorations in SVA, PT–LL (p<0.01) were observed in CSD without significant change in thoracic kyphosis (TK). All sagittal parameters in DSD deteriorated significantly. DSD group had significantly poorer PSM quality at T12 and L4 compared to CSD group. In CSD group, sagittal decompensation correlated with muscle quality, i.e., decreases in LL (ΔLL) correlated with CSA of PSM/vertebral body (VB) at L4 (r= -0.412, p=0.046) while increases in TK (ΔTK) correlated with CSA of PSM/VB at T12 (r=0.477, p=0.018). ΔSVA and ΔPT correlated with FI at L4 (r=0.577, p=0.003 and r=-0.407, p=0.048, respectively). DSD group, had weak correlations (-0.3<r<-0.1) between changes in sagittal and PSM parameters. Conclusion: PSM quality in adults with spinal deformity correlates with patients’ ability to maintain an upright posture and sagittal decompensation after walking for 10 minutes.
미국의 금융개혁법이 한국의 금융제도에 미치는 영향 - 금융규제·감독체계를 중심으로 -
배준석 한국금융법학회 2010 金融法硏究 Vol.7 No.2
The Dodd-Frank Wall Street Reform and Consumer Protection Act was enacted in July, 2010. Because of the United States' considerable influence on the world's economy, the country's financial reform plans have attracted the world's attention ever since discussions regarding the Act commenced. The Act is expected to be a rudder for financial reform that many countries will use to move forward. Therefore, an in-depth study on the Act can provide numerous insights and suggestions regarding the financial reform activities in Korea as well. It is, however, obvious that a country's financial system cannot be uniformly applied to other countries because each financial system reflects that particular country's political and economic characteristics. With that limitation in mind it is very useful, applicable, and essential to take Korean traits into consideration when applying the Act to the financial system in Korea. While some aspects of the Act have direct implications for the Korean financial system, other aspects do not. For example, the Act established the Financial Stability Oversight Council, but such a collective decision-maker is not appropriate for Korea because the central banking and financial supervisory system of Korea differs from that of the United States. Particularly, the Bank of Korea, Korea's central bank, does not have financial supervisory powers as of now. Examples of direct applications of the Act, however, would be the orderly liquidation authority and payment/settlement supervision as those and other provisions furnish Korea with useful information. Establishing an organization taking exclusive charge of consumer financial protection is not urgent in Korea because the integrated financial supervisory authority has just begun taking new measures for strengthening consumer financial protection. Additional provisions related to the Federal Reserve System, such as the publication of more information, also can be directly applied to Korea's central bank.
Minimally Invasive Spinal Surgery for Adult Spinal Deformity
배준석,이상호 대한척추신경외과학회 2018 Neurospine Vol.15 No.1
The purpose of this review is to present the current techniques and outcomes of adult spine deformity (ASD) surgery using the minimally invasive spine surgery (MISS) approach. We performed a systemic search of PubMed for literature published through January 2018 with the following terms: “minimally invasive spine surgery,” “adult spinal deformity,” and “degenerative scoliosis.” Of the 138 items that were found through this search, 57 English-language articles were selected for full-text review. According to the severity of the deformity and the symptoms, various types of MISS have been utilized, such as MISS decompression, circumferential MISS, and hybrid surgery. With proper indications, the MISS approach achieved satisfactory clinical and radiological outcomes for ASD, with reduced complication rates. Future studies should aim to define clear indications for the application of various surgical options.
Brightness 기능을 갖는 컬러 스페이스 컨버터 설계에 관한 연구
배준석,박노경,문대철 한국음향학회 1998 韓國音響學會誌 Vol.17 No.1
본 논문에서는 기존의 단방향 컬러 스페이스 컨버터(Color Space Converter)를 양방 향으로 변환하는 것뿐만 아니라, 기존의 디코더, 엔코터 및 모니터 등이 가지고 있는 Brightness 기능을 갖도록 변환 행렬 계수를 임의로 조정할 수 있는 컬러 스페이스 컨버터 를 설계하였다. 이러한 변환 계수 자체를 조정하여 휘도 및 색차 신호에 변화를 주는 방법 은 새롭게 제안한 방법으로 계수의 조정은 ROM형태를 이용하여 향후 인터페이스 부분을 부가하여 소프트웨어적으로 제어할 수 있도록 설계하였다. 본 논문에서 제안한 Brightness 기능을 갖는 컬러 스페이스 컨버터는 저가의 멀티미디어 비디오 관련 시스템을 구현할 수 있는 장점을 가지고 있다.
배준석,김지상,이상호,김진성 대한척추신경외과학회 2022 Neurospine Vol.19 No.3
Objective: To evaluate the clinical outcomes of transforaminal endoscopic thoracic discectomy (TETD) and microscopic discectomy (MD) for the treatment of symptomatic thoracic disc herniation (TDH). Methods: Seventy-seven patients (mean, 55.9 years; follow-up, 11.2 months) with symptomatic TDH were retrospectively reviewed (39 TETD and 38 MD). Radiological factors and perioperative outcomes were reviewed. Visual analogue scale (VAS), Oswestry Disability Index (ODI), and American Spinal Injury Association impairment scale were used to evaluate clinical and functional outcomes. Patient satisfaction was evaluated using modified MacNab criteria. Results: The levels of surgery and the location of hernia were evenly distributed in the both groups. The operative time (70.6 minutes vs. 175.7 minutes), estimated blood loss (3.8 mL vs. 357.4 mL), and length of hospital stay (7.0 days vs. 13.0 days) were significantly different between the TETD and MD groups (p < 0.05). VAS scores for dorsal back pain and ODI scores were significantly improved in both groups (p < 0.05). Patients who underwent TETD tended to be more satisfied with the outcome in terms of the modified MacNab criteria (89.7% vs. 73.0%, p = 0.059). Two patients in the MD group underwent revision surgery, whereas one patient in the TETD group underwent MD because of incomplete decompression. Conclusion: TETD for the symptomatic TDH is a feasible and safe procedure that could be used for a wider range of surgical levels with a shorter operative time and hospital stay and less blood loss. While achieving similar outcomes, TETD achieved better patient satisfaction because of the use of local anesthesia and its minimal invasiveness.