원위 대퇴골의 고립성 골연골종에서 발생한 속발성 연골 육종 1례 보고

정필현,황장수,강석,김용민,오형호,채동주,김종필 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

연골육종은 비교적 서서히 자라며 늦게 전이하는 악성 연골 종양으로 알려져 있다. 골 연골종에서 발생한 속발성 연골육종은 발생빈도는 드물며 타부위로의 전이가 적고 악성도가 낮은 경우가 많아 적합한 수술적 치료로서 좋은 예후를 보이는 것으로 보고되고 있다. 본 동국대학교 정형외과학 교실에서는 우측 대퇴골 원위부 골간단부에 생긴 고립성 골 연골종에서 이차적으로 발생한 연골육종을 치험한 바 문헌고찰과 함께 보고하는 바이다. A case of Secondary Chondrosarcoma Arising from Solitary Osteochondroma of the Distal Femur Department of Orthopaedic Surgery, College of Medicine, DongGuk University Phil Hyun Chung M.D., Jung Su Hwang M.D., Suk Kang M.D., Yang Mln Kim M.D., Hyung Ho Oh M.D., Dong Ju Chae M.D., Jong Pil Kim M.D. Chondrpsarcoma is a malignant cartilage-forming tumor that grows slowly and metastasis of this tumor occurs in late stage. Secondary chondrosarcomas arising from a solitary osteocartilaginous exostosis are rare and those have a better prognosis than other chondrosarcomas, and they rarely metastasize. We present our experience with a case of secondary chondrpsarcoma arising in solitary osteochondroma of distal metaphysis of right femur with clinical details.

Aerobic Dance가 主婦의 體力 및 身體構成에 미치는 效果에 대한 硏究

禹善弼,姜東洹 慶熙大學校 體育科學大學 1990 體育科學論叢 Vol.- No.3

The purpose of this study was to see the change of pulmonary function, physical fitness, physique and Body Composition affected by Aerobic movement during 10 weeks. The study was conducted by observing. The following results were concluded the home-keepers who were in their 30s. 1. Body weight, Waist Girth, and Thigh Girth of physique were decreased, and Chest Girth and upper Arm Girth were increased. 2. Skinfold Thickness of Body Composition was totaly decreased, but Lean Body and mass was increased. 3. Book strength and Trunk Flextion were improved better than before, and the height of sargent Jump and the Number of side step were decreased. 4. Average and total Lung Function were decreased after the training compared to before exercise. According to the results of this research, Aerobic exercise has a little effect on weight reduction and physical fitness improvement, but has no effect on Lung function. Also, although strength and Flexibility has been improved as a result of the Aerobic movement, some aspects of power and Agility have not been improved. As a conclusion, although Aerobic exercise can not improve general fitness of the homekeeper but maintain previous fitness level and body shape.

평행봉 무릎 펴고 2회전 뒤공중돌아 내리기 동작의 주요 단계별 운동학적 요인 분석

이동우,강병의,김재필 한국운동역학회 1998 한국운동역학회지 Vol.8 No.2

The purpose of this study was to investigate the kinematic factors during the dismount motion in parallel bars. Six elite gymnasts were participated in this study and were asked to perform double backward somersault in parallel bars. Two video cameras were employed to capture the motions of the subjects. Kwon3D software was used to process and analyze the data. The results obtained from the study were as follows; The average flight time was 0.92sec which reflects the improvement of the technique compared to the previous studies. It was assumed that the longer the flight time the faster the vertical velocity. The vertical position of COM was 209.5cm at the hand take-off and 266cm at the peak. The subjects showed a large vertical and horizontal displacement during down swing phase, which have an influence on the batting phase of swing. The anteroposterior velocity of foot segment had the positive impact on the rotation of the whole body. The magnitude of hyper-extension of the hip joint and shoulder joint seemed to be the critical factors influencing the batting phase of the whole body swing.

시간지연 제어기법을 이용한 유연한 로봇 팔의 위치 제어

김동기,강이석,신효필 忠南大學校 産業技術硏究所 1995 산업기술연구논문집 Vol.10 No.2

A TDC(Time Delay Control) theory is applied to the the position control problems of flexible robot manipulators subjected to unknown dynamics and distrurbances. One link flexible manipulator system with tip mass is represented as a simple spring-mass-damper syseem and AC servo motor is used as the actuator. Based on the system model, the TDC is designed, and the PI-controller is also designed for comparison. The control performance of TDC is evaluated through a series of simulations and experiments. The simulational and wxperimental results show that the TDC is much robust than the PI-controller to the unknown dynamics and disturbances.

동측 대퇴골 경부 및 간부 골절의 치료 : 15례 분석

정필현,강석,채동주,홍정룡,김종필 동국대학교 경주대학 1997 東國論集 Vol.16 No.1

동측 대퇴골 경부 및 간부골절은 드문 골절로서 초진시 경부골절을 간과하는 경우도 있고 치료에 있어서도 여러 가지 방법이 제시되어져 왔다. 저자들은 1989년 6월부터 1996년 5월까지 경험한 동측 대퇴골 경부 및 간부골절 환자 15례를 대상으로 다양한 방법으로 치험한 예를 분석하였다. 15례중 8례에서 경부골절과 간부골절을 동시에 고정하는 재건금속정으로 치료하였고 전례에서 골유합을 얻었으며 평균 골유합기간은 경부골절 14주, 간부골절 20.5주였다. Ipsilateral femoral neck and shaft fractures present diagnostic difficulties and complex choices as to treatment. We report the result of treating 15 such fractures. High-energy accidents accounted for most of these injuries. There were numerous associated injuries, many requiring operative procedures. Eight of Fifteen patients were treated with Reconstruction interlocking nails. All fractures united. There was no delay in diagnosis of femoral neck fractures, and all healed without avascular necrosis. The use of the reconstruction nail is technically demanding. We conclude that this device gives good results for these fractures.

家蠶育種을 위한 繭形質의 遺傳分析

鄭元福,朴東洵,姜弼敦 東亞大學校 1986 東亞論叢 Vol.23 No.1

蠶作安定多收性 育成의 重要性에 비추어 有用한 形質의 遺傳關係를 初期에 推定하고 效率的인 選拔을 爲한 基礎資料를 얻고자 形質相互間의 特性을 고려한 2個品種을 二面交雜하여 F??의 主要 形質에 대한 優性程度 및 組合能力 등을 檢定한 結果는 다음과 같다. 1. Vr-Wr graph에서 雌單繭重과 雄單繭重은 超優性으로, 雌繭層重, 雄繭層重, 雌繭層比率 및 雄繭層比率은 各各 不完全優性으로 推定되었다. 2. 各 形質에 대한 分散成分의 推定에서 雌繭層重, 雄繭層重, 雌繭層比率 및 雄繭層比率은 遺傳子의 相加的 效果가 優性效果보다 더 컸고, 雌單繭重과 雄單繭重은 反對의 樣相이었다. 優性程度와 平均優性程度에서도 雌雄單繭重에서 超優性이고, 雌雄繭層重과 繭層比率은 各各 不完全優性이었다. 3. 一般組合能力과 特定組合能力을 檢定한 바, 6個形質 모두 一般組合能力(GCA)이 特定組合能力(SCA)보다 높게 評價되었다. 4. GCA 效果의 경우, 蠶114가 雌單繭重이 6個形質中에서 가장 높았고, 蠶108이 雄單繭重, 雌繭層重, 雄繭層重, 雌繭層比率 및 雄繭層比率에서 各各 높게 評價되었다. SCA 效果는 蠶107×蠶113은 雌繭層比率에서, 蠶107×蠶114는 雄繭層重과 雄繭層比率에서, 蠶108×複形蠶은 雌繭層重에서, 蠶108×中14는 雄單繭重에서, 蠶113×綠東亞는 雌單繭重에서, 蠶114×複形蠶은 雌單繭重, 雄單繭重 및 雄繭層重에서, 中14×綠東亞는 雌繭層重, 雌繭層比率 및 雄繭層比率에서 各各 높게 評價되어 주로 奬勵蠶品種인 蠶108, 蠶114가 關與하는 組合에서 SCA 效果가 큰 傾向이었다. Since the estimates of the genetic relations between characters gave us effective basic informations about the selection of good strains of the silkworm, this experiment was carried out to estimate the degree of dominance and the combining ability for the some main characters of the silkworm such as cocoon weight and cocoon layer ratio and weight, using the 21 combinations of F??'s by diallel corsses of seven strains of the silkworm. As the result of this experiments, some conclusions obtained were as follows. 1. The male and female cocoon weights are inferred over dominance and their cocoon layer weights and ratio partial dominance from Vr-Wr graph. 2. The additive effect of gene on the male and female cocoon layer weights and ratio is higher than the dominance effect, on the contrary, the latter on both the cocoon weights is higher than the former. Also, in the average degree of dominance, both the cocoon weights are over dominance and the male and female cocoon layer ratio and weights are partial dominance. 3. The effect of general combing ability(GCA) on the 6 characters analysed in this experiments is higher than that of specific combining ability(SCA). 4. In the effect of GCA, the male cocoon weight of Jam 114 is the highest of 6 characters, the male and female cocoon layer ratio and weights of Jam 108 and the male cocoon weight of Jam 108 are relatively high. The effect of SCA on the female cocoon layer ratio of Jam 107×Jam 113, the female cocoon layer weight of Jam 108×Bokhyeong Jam, the male cocoon weight of Jam 108×Jung 14, the female cocoon weight of Jam 113×Nog Dong-A, the male and female cocoon weights and male cocoon layer weight of Jam 114×Bokhyeong Jam, and the female cocoon layer weight and the male and female cocoon layer ratio fo Jung 14×Nog Dong-A is estimated high. Generally, the combinations including the recommended strains of the siklworm such as Jam 108 and Jam 114 tend to be high in the effect of SCA.

우유와 두유를 혼합한 이유보충음료의 개발

손경희,윤선,이민준,김순영,김용태,장동훈,강석필 연세대학교 생활과학연구소 2001 生活科學論集 Vol.10 No.1

The purpose of this study is to develop an infant supplement composed of cow and soy milk which has acceptable taste and digestability and meets nutritional needs of the infants. Even though soy milk is and excellent source of protein for infants who are allergic to dairy products, its protein quality is still lower than that of regular milk. Therefore in the present study the development of sow-soy milk infant formula was attempted. To make the formula equal amount of cow and soy milk were mixed and supplemented with vitamins and minerals to meet the nutritional standards of breast milk, CODEX and recommended dietary allowances for Korean infants. In animal experimental study, the weight gain rate of weaning rats was highest in the order of 100% milk, cow-soy milk, control, soy milk, commercial soy infant milk group. Feed efficiency ratio(FER) were not significantly different among control, 100% milk and cow-soy milk groups. However, commercialized soy infant milk group showed significantly lower FER than other groups. When the cow-soy milk formula was fed to infant in the age of 5 month to 25 months, it did not show any unsatisfactory results in acceptability and bowel movements of the subjects. Since the cow-soy milk formula has not only all the nutrients for the physical growth of infants but also contains valuable physiological functional ingredients, it is expected to be a good choice of supplements for infants.

완전뇌허혈후 재관류시에 국소뇌혈류, 체성감각유발전위 및 신경학적 회복에 대한 Mannitol과 Thiopental의 효과

박춘근,이상원,박영섭,최승진,허필우,정동섭,강준기,최창락 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.2

The cardiopulmonary bypass or cerebral circulation arrest is often used in the treatment of complex aneurysm or of arteriovenous malformation to decrease the risk of intraoperative aneurysm rupture. Although experimental studies have suggested that some drugs may protect the brain from ischemic injury, there are limitations in maintaining cerebral perfusion arrest without incurring neurologic deficits due to the initiation of detrimental processes including excitotoxic neuronal injury, activation of phospholipases, influx of calcium, and generation of damaging free radicals. The purpose of this study is to determine wheter mannitol or thiopental has any favorable effects on the recovery of neurologic deficits and on the regional cerebral blood flow(rCBF), somatosensory evoked potential(SEP) and electroencephalogram(EEG) in cats which underwent 15 minutes-complete global ishcemia-reperfusion. The complete global ischemia was produced in 38 cats by temporary intrathoracic occlusion of the innominate artery and the subclavian artery following ligation of bilateral mammary arteries and simultaneous induction of hypotension. The cats were allocated randomly to one of 4 treatment groups : (1) control group, 8 cats received equal volume of saline solution : (2) thiopental group, 10 cats received 45㎎/㎏ thiopental intravenously, (3) mannitol group, 10 cats received 2g/㎏ mannitol intravenously, (4) combined mannitol and thiopental group, 10 cats received equal dose of mannitol and thiopental intravenously. The drugs were administrated in a equally divided dosage before and after the ischemic episode. The results were as follos : 1) Eight animals which received saline showed the severe postischemic hypoperfusion and poor recovery of SEP and EEG, and 6 of them died within 6 hours after the ischemia. 2) Ten thiopental-treated animals also showed the severe postischemic hypoperfusion and poor recovery of SEP and EEG, and 6 of them died within 6 hours the ischemia. 3) Both mannitol-and combined treated groups showed early recovery of EEG, good recovery of SEP and EEG without the severe postischemic hypoperfusion, and 7 of 10 mannitol-treated animals and 8 of 10 combined treated animals were significantly recovered in all parameters. There were not significant differences in all parameters between the mannitol-and combined treated groups. 4) Thirty-four of 38 animals involved in this 15 minutes-ischemia resulted in the severe neurologic deficits inspite of treatment with mannitol, thiopental or both of them. These results suggest that, in cats, mannitol treatment is effective but not thiopental in preventing severe neurologic injury following complete global ischemia and the duration of complete ischemia should be far less than 15 minutes.

반복작업에 의해 발생한 척골관 증후군 1례

김정원,박인선,이영준,김유창,김필자,강동묵,이채언 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : To report cubital tunnel syndrome due to repetitive motions. Methods : A worker complaining muscle weakness and atrophy of the right hand intrinsic muscles admitted to a hospital. We evaluated him with blood tests, neurophysio-logic studies (NCV & EMG), plain X-ray and US at the both elbows. We investigated his occupational history, and videotaped his work motions based on the work cycle at his previous work site. Finally, an ergonomics expert analyzed the motions using rapid upper limb assessment (RULA). Results : NCV & EMG studies reveals slow conduction velocity on both ulnar nerve across the elbow, more severely in the right side. US shows us compatible finding with diffuse neuritis of both ulnar nerves at both elbows. RULA score is 7. Conclusion : We confirmed that the worker's symptoms were related to his previous jobs demanding repetitive motions using the elbow joints. It is necessary that we should prepare appropriate measures to evaluate, prevent, rehabilitate, and help injured workers to return to work.

Incidental Abnormal FDG Uptake in the Prostate on 18-fluoro-2-Deoxyglucose Positron Emission Tomography-Computed Tomography Scans

Kang, Pil Moon,Seo, Won Ik,Lee, Sun Seong,Bae, Sang Kyun,Kwak, Ho Sup,Min, Kweonsik,Kim, Wansuk,Kang, Dong Il Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.20

18-fluoro-2-deoxyglucose positron emission tomography-computed tomography ($^{18}F$-FDG PET/CT) scans are commonly used for the staging and restaging of various malignancies, such as head and neck, breast, colorectal and gynecological cancers. However, the value of FDG PET/CT for detecting prostate cancer is unknown. The aim of this study was to evaluate the clinical value of incidental prostate $^{18}F$-FDG uptake on PET/CT scans. We reviewed $^{18}F$-FDG PET/CT scan reports from September 2009 to September 2013, and selected cases that reported focal/diffuse FDG uptake in the prostate. We analyzed the correlation between $^{18}F$-FDG PET/CT scan findings and data collected during evaluations such as serum prostate-specific antigen (PSA) levels, digital rectal examination (DRE), transrectal ultrasound (TRUS), and/or biopsy to confirm prostate cancer. Of a total of 18,393 cases, 106 (0.6%) exhibited abnormal hypermetabolism in the prostate. Additional evaluations were performed in 66 patients. Serum PSA levels were not significantly correlated with maximum standardized uptake values (SUVmax) in all patients (rho 0.483, p=0.132). Prostate biopsies were performed in 15 patients, and prostate cancer was confirmed in 11. The median serum PSA level was 4.8 (0.55-7.06) ng/mL and 127.4 (1.06-495) ng/mL in the benign and prostate cancer groups, respectively. The median SUVmax was higher in the prostate cancer group (mean 10.1, range 3.8-24.5) than in the benign group (mean 4.3, range 3.1-8.8), but the difference was not statistically significant (p=0.078). There was no significant correlation between SUVmax and serum PSA, prostatic volume, or Gleason score. $^{18}F$-FDG PET/CT scans did not reliably differentiate malignant or benign from abnormal uptake lesions in the prostate, and routine prostate biopsy was not usually recommended in patients with abnormal FDG uptake. Nevertheless, patients with incidental prostate uptake on $^{18}F$-FDG PET/CT scans should not be ignored and should be undergo further clinical evaluations, such as PSA and DRE.