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차혁렬,양해정,김미정,정진,양회룡,최승평,장차익 조선대학교 기초과학연구소 1999 自然科學硏究 Vol.22 No.1
The one-electron theory of atoms, molecules, and crystals have enjoyed a wide success in many branches of physics. This theory provides a physically appealing description of the electronic structure of many-electron systems. In addition, this theory gives a convenient basis for performing the detailed calculation on specific many-electron systems. In such calculations, it is usually necessary to introduce many simplified assumptions in order to make a progress. Since the principal computational difficulty supposed by the Hartree-Fock equations is the treatment of the exchange term, it would be very desirable to simplify the treatment of these terms by using Slater's average of the exchange potential. The first order correction of energy in the lowest excited states of He atom is calculated by using the unperturbed wave function obtained with the Hartree-Fock-Slater approximation and compared with the result obtained by the simple analytical method. The numerical results agrees with an experimental results for the lowest excited states of He atom with tolerance 3.22%, 2.16%, 2.94% and 3.41%. These results show that the numerical analysis can be applied to other multielectron atoms with the personal computer.
심한 척추변형(측만증 및 후만증)에 대한 척추 후방 절제술
석세일,김진혁,이상민,정의룡,이정희,김성수,정락용 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.1S
■ Purpose To report a technique of vertebral column resection through a single posterior approach and its first results in the treatment of severe spinal deformities. ■ Methods and materials Seventy spinal deformity patients treated by posterior vertebral column resection(PVCR) were reviewed. Minimum follow up was 2 years (2 - 3.3 years). There were 34 males and 36 females with a mean age of 27.4 years at the time of the operation. Etiologic diagnoses were adult scoliosis in 7, congenital kyphoscoliosis in 38, and post-infectious kyphosis in 25. The surgery consisted of temporary stabilization of the vertebral column with segmental pedicle screw fixation, resection of the vertebral column at the apex of the deformity via the posterior route followed by gradual deformity correction and global fusion. ■ Results The total number of resected vertebrae were 143; 76 in thoracic and 67 in lumbar. Mean operation time was 4 hours 31 minutes with average blood loss of 2333 ml. The deformity correction was 40o in the coronal plane and 5Oo in the sagiotal plane. Complications were encountered in 24 patients: 2 complete cord injuries in severe adult scoliosis and thoracic kyphosis patient who had significant preoperative cord compromise, 6 hematomas, 4 root injuries (all incomplete), 5 fixation failures, 2 infections and 5 hemopneumothoraxes. ■ Conclusions PVCR is an effective alternative for severe fixed spinal deformities. However, extreme caution must be taken in the patients with preoperative cord compromise who are the high risk of neurological complications.
Jung Hyun Choi,Sung Won Kim,Jae Gap Lee,Min Hee Kim,Ji Sung Kim,Yoo Rim Choi,Young Dae Yun,Chi Hyok Kim,Yong Seong Kim,Nyeon Jun Kim,Ju Hwan Lee,Sang Bin Lee 국제물리치료학회 2010 Journal of International Academy of Physical Ther Vol.1 No.2
This study aims to reveal how EA affects BAX and NF-kB involved in cell deaths from global ischemia, and to do this, observes the changes of BAX and NF-kB caused by EA application after transient global ischemia. The experimental method is to give rise to global ischemia and apply EA to 27 SD rats with the particulars of being six-week-old, male, around-300 gram-weighing, and adapted to laboratory environment for more than a week, and divide them into three groups, that is, GV20 EA group(n=9), L14 EA group(n=9), no-treatment GI group(n=9), and then observe their changes of BAX and NF-kB at the time lapse of 6 hours, 9 hours and 12 hours after ischemia, using western blotting. The numerical decrease of BAX expression at the time lapse of 9 hours after EA application, though not statistically significant, was observed in GV20 EA group and L14 EA group, and the NF-kB expression appeared statistically significant decrease in GV20 EA group and L14 EA group, but the expression was higher in the group with EA application. Therefore, EA application at the early phase of global ischemia is considered to affect BAX and NF-kB and play a positive role in decreasing apoptosis and cell deaths by inflammation.
Choi, Jung-Hyun,Kim, Sung-Won,Lee, Jae-Gap,Kim, Min-Hee,Kim, Ji-Sung,Choi, Yoo-Rim,Yun, Young-Dae,Kim, Chi-Hyok,Kim, Yong-Seong,Kim, Nyeon-Jun,Lee, Ju-Hwan,Lee, Sang-Bin International Academy of Physical Therapy Research 2010 Journal of International Academy of Physical Ther Vol.1 No.2
This study aims to reveal how EA affects BAX and NF-kB involved in cell deaths from global ischemia, and to do this, observes the changes of BAX and NF-kB caused by EA application after transient global ischemia. The experimental method is to give rise to global ischemia and apply EA to 27 SD rats with the particulars of being six-week-old, male, around-300 gram-weighing, and adapted to laboratory environment for more than a week, and divide them into three groups, that is, GV20 EA group(n=9), L14 EA group(n=9), no-treatment GI group(n=9), and then observe their changes of BAX and NF-kB at the time lapse of 6 hours, 9 hours and 12 hours after ischemia, using western blotting. The numerical decrease of BAX expression at the time lapse of 9 hours after EA application, though not statistically significant, was observed in GV20 EA group and L14 EA group, and the NF-kB expression appeared statistically significant decrease in GV20 EA group and L14 EA group, but the expression was higher in the group with EA application. Therefore, EA application at the early phase of global ischemia is considered to affect BAX and NF-kB and play a positive role in decreasing apoptosis and cell deaths by inflammation.
척추경 나사못 고정술을 이용한 이중 흉추 청소년기 특발성 척추 측만증의 치료
김진혁(Jin-Hyok Kim),김성수(Sung-Soo Kim),정락용(Nak-Yong Jung),김정훈(Jung-Hun Kim),한정일(Jung-Il Han),라호종(Ho-Jong Ra),이상진(Sang-Jin Lee),석세일(Se-Il Suk) 대한정형외과학회 2007 대한정형외과학회지 Vol.42 No.5
목적: 척추경 나사못을 이용한 이중 흉추 청소년기 특발성 척추 측만증의 수술적 치료로 사용되는 척추 전이법과 강봉 감염술의 결과를 평가, 비교하고자 하였다. 대상 및 방법: 수술 후 최소 2년 이상(2-8.8년)의 추시 관찰이 가능했던 환자 47명을 후향적으로 조사하였다. 척추 전이술을 사용한 경우(n=14)를 TR군으로, 강봉 감염술을 사용한 경우(n=33)를 RD군으로 분류하였다. 술 전 만곡의 측정값에서 두 군 사이에 유의한 차이는 없었다. 결과: TR군에서 술 전 37±4°의 상부 흉추 만곡과 52±9°의 하부 흉추 만곡은 최종 추시시 각각 24±4° (35%교정)와 18±5o (65%교정)로 호전되었다. RD군에서 술 전 40±7°의 상부 흉추 만곡과 56±12o의 하부 흉추 만곡은 최종 추시시 각각 19±7° (51%교정)와 16±6° (72%교정)로 호전되었다. 상부 흉추 및 하부 흉추 만곡의 교정은 두 군 사이에 유의한 차이가 있어 RD군에서 더 우수하였다(p<0.05). 흉추 후만, 요추 전만, 척추 균형, 어깨 높이 차이, 제1흉추 경사 각도, 유합 범위는 두 군간에 유의한 차이는 없었다. TR군의 수술 시간과 출혈량은 각각 평균 231분과 2,050 ㎖이었으며, RD군은 263분과 3,217 ㎖로 유의한 차이가 있었다(p<0.05). 결론: 강봉 감염술은 더 우수한 상부 및 하부 흉추 만곡의 교정을 보여 주었으며, 척추 전이술은 쉬운 기기 조작으로 짧은 수술 시간 및 적은 출혈량을 나타내었다. Purpose: To compare the results of two different surgical methods (translation vs rod derotation) in a correction of double thoracic adolescent idiopathic scoliosis (AIS) using pedicle screw instrumentation. Materials and Methods: Forty-seven patients with double thoracic AIS treated by pedicle screw instrumentation were reviewed retrospectively after a minimum follow-up of 2 years. The patients were divided into two groups; TR group (translation method, n=14) and RD group (rod derotation, n=33). There were no significant differences in the preoperative curve characteristics between the two groups. Results: In the TR group, the preoperative upper thoracic curve of 37±4° improved to 24±4° (35% correction), and the lower thoracic curve of 52±9° improved to 18±5° (65% correction). In the RD group, the preoperative upper thoracic curve of 40±7° improved to 19±7° (51% correction), and the lower thoracic curve of 56±12° was improved to 16±6° (72% correction). The correction of the upper and lower thoracic curves was significantly better in the RD group (p<0.05). Thoracic sagittal kyphosis was corrected from 21° to 24° in the TR group and from 18° to 26o in the RD group. There was no significant difference in the spinal balance, shoulder height difference, T1 tilt and fusion extent. The operating time and the amount of blood loss was 231 minutes and 2050㎖ in the TR group and 263 minutes and 3217㎖ in the RD group, respectively (p<0.05). Conclusion: In correcting double thoracic AIS using pedicle screw instrumentation, the rod derotation method showed better correction for the upper and lower thoracic curves. The translation method showed the advantages of easier application, a shorter operation time and less blood loss.
김지원,송인성,정현채,최규완,박민정,김정룡,김진,문선희,차성덕,황진혁,김찬규 대한소화기내시경학회 1997 Clinical Endoscopy Vol.17 No.5
Chronic idiopathic inflamatory bowel disease, espcaially Crohn's disease, is frequently complicated with low gastrointestinal stricture. Besides medical treatment of active inflammation, there is no specific, conservative approach to this complication, Repetitive surgery with extensive resections, leading to short bowel syndrome, is often necessary. Balloons have been used for a variety of gastrointestinal stenoses including esophageal, small intestinal, and colonic stricture. Balloon dilation offers many theoretical advantages (safety, and patient comfort) over dilation with bougies. Especially, the availability of large diameter balloon dilators, which pass through the biopsy channel of standard endoscopes (through-the scope balloon or TTS balloon), has promised efficient direct-vision dilatation of strictures without the need of guide wires or fluoroscope. We report a case of colonic Crohn's stricture dilated successfully using TTS balloon catheter.