제2형 당뇨환자의 골감소증 발생빈도와 골밀도 분석

윤세원,신정섭,이현기,Yoon, Se-Won,Sin, Jung-Sub,Lee, Hyun-Kee 대한물리치료학회 2006 대한물리치료학회지 Vol.18 No.4

Purpose: This study aims to suggest clinical basis of physical therapy to skeletal system complication in type II diabetic patients through a variety of analysis methods. Methods: 75 subjects(type II diabetic patients; age from 40 to 80) of this study were participated in BMD(Bone Mineral Density) and Dual energy X-ray absorptiometry, blood test to their skeletal system. Results: Incidence of osteopenea was higher than normal group as women(91.2%) and men(53.5%) in diabetes group. However, women were showed no significantly difference in comparison group. Above age 60(in diabetes group; men and women) showed to highly incidence of osteopenea as well as significantly difference in osteopenea(peripheral neuropathy). As a result of analyzing blood through presence and absence of osteopenea in diabetes group, men were showed significantly difference in DPD/creatinine ratio and women were showed significantly difference in Alkaline phosphatase, Corrected Calcium. Conclusion: This study shows that decreased BMD and increased osteopenea through type II diabetes. Women were particularly lower BMD and higher incidence of osteopenea than men and men influence of type II diabetes on change of BMD was greater than women.

신발 밑창 높이에 따른 보행의 변화

윤세원,이정우,조운수,Yoon, Se-won,Lee, Jeong-woo,Cho, Woon-SU 대한중풍순환신경학회 2013 대한중풍.순환신경학회지 Vol.14 No.1

■ Objectives This study is to examine change of gait parameters on shoes sole height(high heels, MBT shoes, house shoes) through gait analyzer. ■ Methods The subjects of this study were 12 women in their twenties. Gait analysis system is 5m in total length and gait is led to be comfortable. They put three kinds of shoes each and were led to walk 5m on gait analysis system. ■ Results There were significant differences in step length, single support and load response of gait parameters and in stride length and total double support at double support phase. ■ Conclusion Muscle activity differs in that different that shoes sole height and form because tibialis anterior muscle has strengthen and gastrocnemius has stretched. Therefore we think that patients with knee joint problem consider gait parameters when shoes select.

초음파영상에서 골관절염을 가진 노인의 하지 근육에 대한 사례연구

윤세원,박수지,이정우,Yoon, Se-Won,Park, Soo-Ji,Lee, Jeong-Woo 대한중풍순환신경학회 2013 대한중풍.순환신경학회지 Vol.14 No.1

■ Objectives The purpose of the this study was to investigate organization change(pennation angle) of lower extremity muscle in elderly with knee osteoarthritis through ultrasonic image. Also, we examined organizational change of muscle was by influenced after total knee replacement(TKR). ■ Methods Rectus femoris image was taken at 50% of the distance between the anterior superior iliac spine and the superior border of the patella. Vastus medialis image was taken at the most distal insertion level of vastus medialis on the medial border of the patella. measurements included the most distal insertion level of the vastus medialis on the medial border of the patella. ■ Results Change of pennation angle in rectus femoris showed decrease from 5.11° in preoperation to 4.29° in 1 week after operation. Change of pennation angle in vastus medialis showed decrease from 6.94° in preoperation to 5.76° in 1 week after operation. ■ Conclusion We consider decrease of pennation angle after total knee replacement in this study was casued by organizational change of muscle and this pennation angle was influenced force created by muscle. Therefore, we thinks that this pennation angle through ultrasonic image will be available to plane individual muscle exercise program and to confirm muscle mass by muscle strength training.

액상소결에 의한 $\beta-SiC-ZrB_2$ 복합체의 제조와 특성(II)

윤세원,황철,주진영,신용덕,Yoon, Se-Won,Hwang, Chul,Ju, Jin-Young,Shin, Yong-Deok 대한전기학회 2000 전기학회논문지C Vol.49 No.2

The mechanical and electrical properties of the hot-pressed and annealed $\beta$-SiC+39vol. %ZrB2 electroconductive ceramic composites were investigated by adding 1, 2, 3wt% Al2O3+Y2O3(6:4wt%) of the liquid forming additives. In this microstructures, no reactions were observed between $\beta-SiC$ and ZrB2. The relative density is over 90.8% of the theoretical density and the porosity decreased with increasing Al2O3+Y2O3 contents. Phase analysis of the composites by XRD revealed $\alpha-SiC(6H, 4H)$, ZrB2 and $\beta-SiC$(15R). Flexural srength showed the highest of 315.5MPa for composites added with 3wt% Al2O3+Y2O3 additives as room temperature. Owing to crack deflection and crack bridging of fracture toughness mechanism, the fracture toughness showed 5.5MPa.m1/2 and 5.3MPa.m1/2 for composites added with 2wt% and 3wt% Al2O3+Y2O3 additives respectively at room temperature. The area fraction of the elongated SiC grain in the etched surface of sample showed 65% and 65.1% for composite added with 2wt% and 3wt% Al2O3+Y2O3 additives respectively. The electrical resistivity at room temperature. The electrical resistivity of the composites wall all positive temperature coefficient(PTCR) against temperature up to $700^{\circ}C$.

신경근전기자극이 스테로이드 투여 흰쥐의 골격근 무게 및 단백질 함량에 미치는 효과

윤세원,신민철,정대인,김용남,Yoon, Se-Won,Shin, Min-Chul,Jung, Dae-In,Kim, Yong-Nam 대한임상전기생리학회 2003 대한임상전기생리학회지 Vol.1 No.1

The present studies are designed to determine whether the NMES can affect the muscle atrophy in rats following administration of steroid. Rats were divided into four groups: 1) Control group treated with administration of distilled water. 2) The group treated with administration of steroid. 3) The group treated with NMES once a day after adminstration of steroid. 4) The group treated with NMES twice a day after administration of steroid. The muscle atrophy was induced by one week administration of dexamethasone once a day by 3 mg/kg. The change in the structure of muscle fiber and the amount. of myofibril protein and gastrocnemius were determined after every week dissection of the tissues. The results were as follows; 1. The administration of steroid significantly affected the decrease in the weight, but NMES did not affect the inhibition of decrease in the weight. 2. The weight of gastrocnemius in the group once treated with NMES was changed two weeks later; similarly in the group twice treated with NMES significantly did two or three weeks later. These indicated that NMES affected the muscular activation of gastrocnemius(p<.05). 3. The changes in the amount of gastrocnemius protein by NMES might, indicate that NMES activated the capacity of synthesis of muscle fiber protein(p<.05).

수중운동이 스테로이드를 투여한 흰쥐의 골격근 무게 및 단백질 함량에 미치는 효과

윤세원,김태열,최석주,Yoon Se-Won,Kim Tae-Youl,Choi Suk-Joo 대한물리치료학회 2003 대한물리치료학회지 Vol.15 No.3

The purpose of this study was to know the effect of aquatic-exercise on muscle atrophy which induced by steroid injection. The forty-eight Sparague-Dawley adult male rats were assigned to the 4 groups; Group I (distilled water injection), Group II (steroid injection), Group III (distilled water injection with aquatic exercise), Group IV (steroid injection with aquatic exercise). We observed their body weight, muscle relative weight, myofibrillar protein content. The results of this study were as follows; 1. Body weight was decreased rapidly on steroid injection groups in comparison with distilled water injection groups after 2 weeks (p<0.01), but that was almost recovered as before test on steroid injection group with aquatic exercise. 2. The relative weight of gastrocnemius muscles was decreased on steroid injection groups in comparison with distilled water injection groups. however, Decrease of it on steroid injection group with aquatic exercise for steroid injection group was fallen. There was very significant difference after 4 weeks (p<0.01). 3. Myofibrillar protein content of gastrocnemius muscles was decreased on steroid injection groups in comparison with distilled water injection groups. however, Decrease of it on steroid injection group with aquatic exercise for steroid injection group was fallen. There was significant difference after 4 weeks (p<0.05).

제2형 당뇨환자와 정상성인의 골밀도 비교

윤세원,최석주,정대인,박래준,김한수,김계엽,김태열,Yoon, Se-Won,Choi, Sug-Ju,Jung, Dae-In,Park, Rae-Joon,Kim, Han-Su,Kim, Kye-Yoep,Kim, Tae-Youl 대한물리치료학회 2006 대한물리치료학회지 Vol.18 No.2

Purpose: This study was aimed for service to clinical data of physical therapy necessity of bone complication through analysis method of BMD (bone mineral density) used DEXA (dual energy X-ray absorptiometry) to their skeletal system for physical therapy assesement and intervention program in type II diabetic patients. Methods: Experimental group of 75 subjects and comparison group of 62 subjects were participated in type II diabetic patients(40-80 ages). BMD was measured by DEXA. BMD change of BMI score and BMD comparison of age and sex would be known. Results: This study was found that decreased BMD and increased osteopenea in type II diabetes. In particular, women were lower BMD and higher incidence of osteopenea than men. Men showed significant difference in normal group. Influence of type II diabetes was great on change of BMD in men. however, it showed no significant difference from normal group. Conclusion: it was found that skeletal system complication by type II diabetes had some relations. Because reduction of BMD had a great danger to induce trauma by fall or degenerative disease of system, evaluation of proper physical therapy for its prevention and improvement and intervention program are needed. In addition, it would be important to divide type II diabetic patients into osteopenea and osteoporosis changes of skeletal system at comprehensive aspect of physical therapy.

液狀燒結에 의한 β-SiC-ZrB₂ 複合體의 製造와 特性(Ⅱ)

尹世元(Se-Won Yoon),黃澈(Chul Hwang),朱陳榮(Jin-Young Ju),辛龍德(Yong-Deok Shin) 대한전기학회 2000 전기학회논문지C Vol.49 No.2

β-SiC-TiB₂복합체의 파괴인성과 전기전도도에 미치는 YAG의 영향

윤세원(Se Won Yoon),주진영(Jin young Ju),신용덕(Yong Deok Shin),여동훈(Dong Hun Yeo),박기엽(Ki Yub Park) 대한전기학회 2000 대한전기학회 학술대회 논문집 Vol.2000 No.7

랜섬웨어 탐지율을 높이기 위한 블록암호 알고리즘 식별 방법에 관한 연구

윤세원(Se-won Yoon),전문석(Moon-seog Jun) 한국정보보호학회 2018 정보보호학회논문지 Vol.28 No.2

랜섬웨어는 블록암호와 같은 대칭키 알고리즘을 사용해서 사용자의 파일을 불법적으로 암호화한다. 만약 특정 프로그램에서 블록암호의 흔적을 사전에 발견할 수 있다면, 랜섬웨어 탐지율을 높일 수 있을 것이다. 블록암호가 포함되어 있다는 것은 잠재적으로 암호화 기능을 수행할 것이라고 볼 수 있기 때문이다. 이 논문은 특정 프로그램에 블록암호가 포함되었는지 판단하는 방법을 제시한다. 대부분의 랜섬웨어가 사용하는 AES 뿐만 아니라 향후 사용될 수 있는 다양한 블록암호의 구현 특성을 살펴보는데, 그 특성을 기반으로 특정 프로그램에 해당 알고리즘이 포함되어 있는지 알 수 있다. 이 논문에서 제시하는 방법은 기존 탐지방법을 보완해서 더욱 높은 확률로 랜섬웨어를 탐지할 수 있을 것이다. Ransomware uses symmetric-key algorithm such as a block cipher to encrypt users’ files illegally. If we find the traces of a block cipher algorithm in a certain program in advance, the ransomware will be detected in increased rate. The inclusion of a block cipher can consider the encryption function will be enabled potentially. This paper proposes a way to determine whether a particular program contains a block cipher. We have studied the implementation characteristics of various block ciphers, as well as the AES used by ransomware. Based on those characteristics, we are able to find what kind of block ciphers have been contained in a particular program. The methods proposed in this paper will be able to detect ransomware with high probability by complementing the previous detection methods.