[돈 되는 해외 주식] 미래 암호화폐 붐, 그 중심에 코인베이스?

안영준 한국경제매거진(주) 2024 한경 비즈니스 Vol.- No.1491

정상 한국인의 요추 형태 분류에 따른 시상면상 척 추 - 골반 지표들의 변화 -20대 성인 남자 군에서 의 연구-

안영준,김영배,강규복,이승원,김용정 대한척추외과학회 2010 대한척추외과학회지 Vol.17 No.2

Study Design: This is a prospective radiographic study. Objectives: We wanted to describe and quantify the common variations in the sagittal lumbar spine. Summary of the Literature Review: No previous study of the spinopelvic parameters with a large cohort of asymptomatic young men was performed on subjects with the same ethnic background. Materials and Methods: 166 young males without disease, trauma or a history of operation on the spine or lower extremities were included. The sagittal standing radiographs of the whole spine on 36 inch film were taken. The distances from the plumb line of C7,T12, the lumbar apex and the bicoxofemoral head to the posterosuperior corner of the sacrum were measured. Thoracic kyphosis,thoracolumbar kyphosis, lumbar lordosis, the segmental vertebral slopes, the sacral slope and the pelvic incidence were measured. Groups 1 and 2 were classified by having a sacral slope less than 35° (group 1: apex below L4, group 2: above L4). Group 3 had a sacral slope between 35° and 45°, and group 4 had a sacral slope greater than 45°. Results: The average age was 21.8 years (range: 19~26 years). Group 1 contained 37 cases, group 2 had 44, group 3 had 62 and group 4had 23. Thoracolumbar kyphosis was significantly increased in group 1 and lumbar lordosis and pelvic incidence were increased in groups 3 and 4. Thoracic kyphosis and the vertebral slope of T12 did not demonstrate any difference between the groups. Conclusions: The sagittal spinopelvic parameters showed significant changes according to the morphology of the lower lumbar spine. Understanding the patterns of variation in the spinopelvic parameters may help surgeons to plan treatment for various spinal lesions. 연구계획: 방사선학적 검사를 이용한 전향적 연구목적: 정상인의 척추를 대상으로 요추의 형태를 분류하고 방사선학적 검사를 통해 시상면상 척추와 골반의 세분화된 지표들에 대하여 알아보고자 하였다. 선행문헌의 요약: 정상의 젊은 남성을 대상으로 한 척추-골반 지표의 분류에 관한 연구는 보고된 바가 없었다. 대상 및 방법: 2007년 10월부터 2009년 3월까지 166명의 성인 남자들을 대상으로 연구를 시행하였다. 척추와 하지의 질환이나 수술 등의 과거력이 없는 정상인들을 선별하였다. 전신 기립 측면 촬영을 시행하여 측만증, 협부 결손, 또는 추간판 간격의 이상 등이 있는 예는 제외하였다. 방사선학적 시상면 지표는 거리 지표로 제 7 경추, 제 12 흉추, 첨부 요추 및 대퇴 골두의 수선과 천추 후상단과의 거리를 측정하였고, 각도 지표로 흉추후만각, 흉요추 후만각 및 요추 전만각을 측정하였다. 골반 지표로는 천추 경사 및 골반 입사각을 측정하였다. 이 후 이들을 하부 요추의 형태에 따라 천추 경사가 35도 이하인 대상자 중 첨부 요추가 제 4요추 이하인 경우 1군, 이상인 경우 2군, 천추 경사가 35도 이상인 경우를 3군, 45도 이상인 경우를 4군으로 세분하여 비교하였다. 결과: 대상자들은 평균 21.8세 (19~26세)이었다. 1군은 37예, 2군 44예, 3군 62예, 4군 23예였다. 거리 지표는 전례에서 체간의 균형을 보였으며, 제 12흉추 수선과 첨부 요추 수선이 1군에서 가장 후방으로 전이되었다. 각도 지표로 1군에서 흉요추 후만각이 가장 증가하였으며, 요추 전만각은 4군으로갈수록 증가하였다. 척추 경사는 제 12흉추 하단 척추 경사각이 각 군간에서 제일 차이가 적었다. 골반 지표로 골반 입사각은 4군으로 갈수록 증가하였다. 결론: 하부 요추 형태의 변이에 따라 척추와 골반의 여러 시상면 지표들이 변화하는 양상을 보였다. 그러나 모든 군에서 흉추 후만각 및 제 12 흉추 하단의 척추 경사각은 유의한 차이를 보이지 않았다. 골반과 척추의 시상면 지표의 변화에 대한 이해는 정상인의 체간 균형 과정을 이해하는데 도움을 줄 수있을 것으로 사료된다.

거골의 골연골 병변에 대한 자가 골연골 이식술의 결과

안영준,한성호,양보규,이승림,유재호,정선욱,빈성우,주민홍,김성완,Ahn, Young-Joon,Hahn, Sung-Ho,Yang, Bo-Kyu,Yi, Seung-Rim,Yoo, Jae-Ho,Chung, Shun-Wook,Bin, Sung-Woo,Zoo, Min-Hong,Kim, Seong-Wan 대한족부족관절학회 2006 대한족부족관절학회지 Vol.10 No.1

Purpose: The purpose of this study is to assess the results of the autologous osteochondral grafting for the osteochondral lesion of the talus. Materials and Methods: This study included 21 patient who had been treated with the open autologous osteochondral grafting between December, 1999 and December 2003. We treated the patients with autologous osteochondral grafting method who had the lesion of stage II or medial lesion of stage III without improvement for at least 6 months, the medial lesion of stage IV, the lateral lesion of stage III, IV by Berndt and Harty's classification or who had not improved with previous operation. The average duration of follow up was 26 (12-56) months. 6 patients had been treated with the previous operation that 3 patients with drilling, 3 patients excision, curettage and drilling. Results: The average AOFAS Ankle/Hindfoot score was 92.7 points and no patient had a limitation of the daily activities due to pain or abnormal function. Postoperative radiography showed good joint congruency and postoperative MRI good incorporation of the graft. The average Lysholm knee score was 96 points and only two patients had mild knee pain during severe exertion. Conclusion: The autologous osteochondral grafting is the useful operative method when the lesion is advanced stage or when previous operative treatment has failed.

Pattern Data 고속처리를 위한 Microprogrammed Controller 설계 ( Design of Microprogrammed Controller for High Speed Processing of Pattern Data )

안영준,서희돈 대한전자공학회 1991 대한전자공학회 학술대회 Vol.1991 No.7

내측 관절 이개를 동반한 족관절 외과골절에 있어서 삼각인대 봉합의 필요성

안영준,정병준,양보규,한성호,이승림,유재호,김민석 대한골절학회 2005 대한골절학회지 Vol.18 No.3

젊은 성인 무지 외반증 환자에서 원위부 갈매기형 절골술의 결과

안영준,한성호,양보규,이승림,유재호,정병준,길경민,Ahn, Young-Joon,Hahn, Sung-Ho,Yang, Bo-Kyu,Yi, Seung-Rim,Yoo, Jae-Ho,Chung, Byung-June,Kil, Kyung-Min 대한족부족관절학회 2005 대한족부족관절학회지 Vol.9 No.2

Purpose: To analyze the risk factors and the treatment results of the distal chevron osteotomy for the hallux valgus in young adult. Materials and Methods: Eleven cases of hallux valgus in 9 patients who underwent the distal chevron osteotomy between February 2000 and January 2004 were included for the study. For the clinical evaluation, we used hallux-metatarsophalangeal interphalangeal scale of American Orthopaedic Foot and Ankle Society (AOFAS). For radiological evaluation, we measured hallux valgus angle (HVA) and intermetatarsal angle (IMA). Results: Five patients had family history of hallux valgus. Symptoms were aggravated by military drill and sports activity. The average AOFAS scale was 62.5 preoperatively, and 88.4 at final follow-up. The HVA and IMA were $34.9^{\circ}$, and $15.8^{\circ}$ preoperatively, $16.3^{\circ}$ and $8.2^{\circ}$ at postoperative 6 weeks, and $19.9^{\circ}$ and $9.8^{\circ}$ at final follow-up. Conclusion: The symptoms of hallux valgus in young adults were aggravated by military drill and sports activity. Distal chevron osteotomy was useful for the treatment of the moderate to severe hallux valgus in young patients.

Vapor batch crystallization and preliminary X-ray crystallographic analysis of a cold-active endo-β-1,4-glucanase that was produced through the cold temperature protein expression

안영준,김민규,송정민,강미혜,이윤호,차선신 한국구조생물학회 2015 Biodesign Vol.3 No.3

The CaCel gene product from Antarctic springtail Cryptopygus antarcticus (CaCel) belongs to the glycoside hydrolasefamily 45 (GH45) type endo-β-1,4-glucanase. Since the production of soluble recombinant CaCel was not successful at thetemperature range of 15-37oC, we further lowered the expression temperature. The Escherichia coli Rosetta-gami2 (DE3)strain harbouring an expression vector including the CaCel gene was cultured at 10oC. Due to the extremely low growthrate, the induction time was expanded to 9 days and the 18-liter culture volume was necessary to get enough solubleprotein for crystallization. Crystals of CaCel were grown in droplets under Al’s Oil that allows vapor diffusion. In spite ofsmall size, the crystal of CaCel, which belonged to the space group P3121, with unit-cell parameters a = 73.57, b = 83.93,c = 163.77 Å, diffracted to 2.6 Å resolution.

Audible Doppler Ultrasound(8 MHz)를 이용한 소아와 영아에서 중심정맥 도관 삽입술에 관한 연구

안영준,정진영,홍수종 대한소아과학회 2002 小兒科 Vol.45 No.9

위식도 역류질환 환아에서 보행성 이중채널 식도내 산도 검사에 대한 연구

안영준,문경래,Ahn, Young-Joon,Moon, Kyung-Rye 대한소아소화기영양학회 2000 Pediatric gastroenterology, hepatology & nutrition Vol.3 No.1

Purpose: The aim of this study was to determine how much acid exposure would occur in the proximal esophagus, both in normal and in patients with abnormal distal esophageal acid exposure. Methods: Fourty-six patients with suspected GER were classified into two groups, 24 patients with pathological distal reflux (group I); 22 patients with normal distal reflux (group II). The ambulatory dual-probe esophageal pH monitoring was performed for 18-24hr. The abnormal reflux was defined when the percent of time that pH was below 4.0 exceeded the 95th percentile of normal value. Results: The siginficant differences between distal and proximal esophageal pH recordings in group I persisted for all parameters except for the longest episode, but didn't persist in group II. At the distal esophageal site, the median percent time with pH<4.0 in group I was 19.3 and significantly higher than at proximal site. Half of patients with pathological distal reflux also had proximal acid reflux. Correlation coefficients between the distal and proximal esophageal sites in group I of the number of reflux episodes and time of the longest episode were 0.451 and 0.646 respectively. Conclusion: The 50 percent of patients with pathological distal acid reflux also had abnormal acid exposure in the proximal esophageal site. Therefore, we recommand simultaneous pH recordings from dual probe esophageal sites in children with gastroesophageal reflux.

CaCO₃ 첨가법에 따른 재생 ONP의 특성변화

안영준,남성영,엄남일,안지환,한춘,Ahn, Young-Jun,Nam, Seong-Young,Um, Nam-Il,Ahn, Ji-Whan,Han, Choon 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.2

In order to improve the refresh rate of old newspaper(ONP), PCC shape-controlling experiments were carried out. The effect of a PCC polymorph on improving the quality of old newspaper was studied for a transformation from waste paper to eco-friendly paper. The synthesis of PCC consists of an in-situ process and a loading process to enhance the refresh rate of old newspaper. The characteristics between the in-situ process and the loading process could be analysed by SEM analyses of coated fiber surfaces. The retention rate ranges from 65 to 67% after the application of the in-situ process, and that after the loading process ranges from 55 to 58%. The retention rates thus show a difference of about 7-10%. In addition, the whiteness and ERIC characteristics of the in-situ process gave more efficient results than those of the loading process.