骨盤腔內 巨大 橫紋筋肉腫 1 例

金瑩洙,河泰原,朴滿洙,姜瞬求,李重禾,尹栗老,薛鍾求 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.2

Rhabdomyosarcoma, which is a very rare and highly malignant disease in urologic field, has three categories-pleomorphic, alveolar, embryonal, and may arise from any part of the body that contains embryonal mesenchyme, whether striated muscle tissue is present or not. The common site in the genitourinary tract are prostate, bladder, and vagina. Herein we experienced a rhabdomyosarcoma of the pelvic cavity and reviewed literature briefly.

CVA 환자의 UTI에 대한 임상적 관찰

허태율(Tae Yool Heo),변미권(Mi Kwon Byun),김재규(Jae Kyu Kim),김진영(Jin Young Kim),심재원(Jae Won Sim),감철우(Cheol Woo Kam),박동일(Dong Il Park) 한의병리학회 2007 동의생리병리학회지 Vol.21 No.6

DETECTION OF SPATIAL AND TEMPORAL INTENSITY CHANGES BY A DIFFUSION NEURAL NETWORK

Yool Kwon,Ki Gon Nam,Tae Hoon Yoon,Jae Chang Kim 대한전자공학회 1992 JTC-CSCC : Joint Technical Conference on Circuits Vol.- No.-

작동유체의 등온 가열 상태에서 펌프의 이상유동 특성에 관한 실험적 연구

오율권,유영태,이용헌,서동표 조선대학교 생산기술연구소 1996 生産技術硏究 Vol.18 No.1

This study is to examine the effects of entrained air on the pump performance in a centrifugal pump. Using a 1/10 scale model pump. which is designed and manufactured to simulate two phase flow performance of the reactor coolant pumps of Y.G.N #3 and 4. a set of experiments was executed with water and air mixtures at heated state of 50℃ and at atmospheric pressure. A head loss coefficient. which is defined as a nondimensional ratio of the difference of theoretical and actual pump head coefficient in a single phase. ◁화학식 삽입▷ (원문을 참조하세요) was determined as a function of void fracrtion, α , and flow coefficient, Φ. The calibrated mass flow rates of air and water were used to calculate void fraction using the void meter of the conductivity probe type. compensate the defect of drift flux model and calculate the void fraction. In particular. the flows were stoped when the void fraction was about 0.13.

The Effects of COVID-19 Pandemic on the Recovery of Hip Fracture Patients

Young-Yool Chung,Sung-Nyun Baek,Tae-Gyu Park,김민영 대한고관절학회 2023 Hip and Pelvis Vol.35 No.4

Purpose: To figure out how complete control of family visits to prevent infection of coronavirus disease 2019 (COVID-19) affected the activity recovery of hip fracture patients admitted to nursing hospitals. Materials and Methods: Eighty-one patients with hip surgery in the two years prior to COVID-19 pandemic were classified as Group A, and 103 patients in the next two years were designated as Group B. The subjects’ walking ability was evaluated by using the modified Koval index (MKI). In order to analyze the impact of the family visit control to the subjects, each group was classified into two different groups: (1) inpatients group who admitted to nursing hospitals and (2) home-treated patients. Additionally, statistical elements were processed in consideration of other factors that may affect the results of the experiment. Results: The MKI evaluated at 6 months postoperative was 3.31±1.79 in Group A and 2.77±1.91 in Group B, and it was meaningfully low after the pandemic (P=0.04). There was significantly low among both of Group A 2.74±1.76 and Group B 1.93±1.81 after the pandemic (P=0.03) among those treated at the nursing hospital. The rate of deterioration of the MKI was 35 (43.2%) in Group A and 57 (55.3%) in Group B, which increased by 12.1% after the pandemic. Conclusion: The pandemic had a negative effect on the recovery of postoperative activities of elderly hip fracture patients who admitted to nursing hospitals when family access was completely restricted to prevent infection.

연료의 물리적 특성과 직접탄소연료전지의 연료극 반응성에 관한 연구

고태욱(Tae Wook Ko),안성율(Seong Yool Ahn),최경민(Gyung Min Choi),김덕줄(Duck Jool Kim) 한국에너지학회 2011 에너지공학 Vol.20 No.4

Direct Anterior Approach for Total Hip Arthroplasty in the Elderly with Femoral Neck Fractures: Comparison with Conventional Posterolateral Approach

Young-Yool Chung,Sang-Min Lee,Sung-Nyun Baek,Tae-Gyu Park 대한정형외과학회 2022 Clinics in Orthopedic Surgery Vol.14 No.1

Background: The aim of this study was to determine if it was feasible and safe to perform total hip arthroplasty (THA) using the direct anterior approach (DAA) when compared with the conventional posterolateral approach (PA) in patients with femoral neck fractures. The time required to start walking was investigated to identify advantages of the muscle-sparing approach. Safety of the approach was judged based on the incidence and nature of all complications. Methods: We retrospectively reviewed 67 THA cases due to femoral neck fractures from October 2015 to January 2019. The PA was used in 31 cases, and the DAA was used in 36 cases. The average operative time and amount of bleeding were evaluated. Cup inclination, anteversion, and leg length discrepancy (LLD) were also measured on radiographs. The time to start walking and complications (e.g., intraoperative fracture, infection, and dislocation) were recorded. Results: The mean operative time was 84.35 ± 13.95 minutes in PA group and 99.22 ± 20.33 minutes in DAA group (p = 0.010). But after experiencing 20 cases using the DAA, there was no statistically significant difference in the operative time between the groups. The mean volume of bleeding was 428.73 ± 207.26 mL in the PA group and 482.47 ± 150.14 mL in the DAA group. There was no difference in the acetabular cup position between two groups. Ambulation was started at 3.94 days after surgery on average in the PA group and 3.14 days in the DAA group, showing a statistically significant difference. Intraoperative fracture and infection were not observed in either group. The incidence of LLD was 1 in each group. The dislocation rate was 3.2% (1 case) in the PA group and 5.5% (2 cases) in the DAA group. Conclusions: Although the DAA for THA was similar to the PA in terms of operative time, volume of bleeding, and complications, the DAA showed a great advantage in early rehabilitation as a muscle-sparing procedure in the elderly with femoral neck fractures.

Antibacterial Activities of Graphene Oxide–Molybdenum Disulfide Nanocomposite Films

Kim, Tae In,Kwon, Buki,Yoon, Jonghee,Park, Ick-Joon,Bang, Gyeong Sook,Park, YongKeun,Seo, Yeon-Soo,Choi, Sung-Yool American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.9

<P>Two-dimensional (2D) nanomaterials, such as graphene-based materials and transition metal dichalcogenide (TMD) nanosheets, are promising materials for biomedical applications owing to their remarkable cytocompatibility and physicochemical properties. On the basis of their potent antibacterial properties, 2D materials have potential as antibacterial films, wherein the 2D nanosheets are immobilized on the surface and the bacteria may contact with the basal planes of 2D nanosheets dominantly rather than contact with the sharp edges of nanosheets. To address these points, in this study, we prepared an effective antibacterial surface consisting of representative 2D materials, i.e., graphene oxide (GO) and molybdenum disulfide (MoS2), formed into nanosheets on a transparent substrate for real device applications. The antimicrobial properties of the GO MoS2 nanocomposite surface toward the Gram-negative bacteria Escherichia coli were investigated, and the GO MoS2 nanocomposite exhibited enhanced antimicrobial effects with increased glutathione oxidation capacity and partial conductivity. Furthermore, direct imaging of continuous morphological destruction in the individual bacterial cells having contacts with the GO MoS2 nanocomposite surface was characterized by holotomographic (HT) microscopy, which could be used to detect the refractive index (RI) distribution of each voxel in bacterial cell and reconstruct the three-dimensional (3D) mapping images of bacteria. In this regard, the decreases in both the volume (67.2%) and the dry mass (78.8%) of bacterial cells that came in contact with the surface for 80 min were quantitatively measured, and releasing of intracellular components mediated by membrane and oxidative stress was observed. Our findings provided new insights into the antibacterial properties of 2D nanocomposite film with label-free tracing of bacterial cell which improve our understanding of antimicrobial activities and opened a window for the 2D nanocomposite as a practical antibacterial film in biomedical applications.</P>

Original Article : The Effect of Intestinal Permeability and Endotoxemia on the Prognosis of Acute Pancreatitis

( Young Yool Koh ),( Woo Kyu Jeon ),( Yong Kyun Cho ),( Hong Joo Kim ),( Won Gil Chung ),( Chang Uk Chon ),( Tae Yun Oh ),( Jun Ho Shin ) The Editorial Office of Gut and Liver 2012 Gut and Liver Vol.6 No.4

Background/Aims: Early intestinal mucosal damage plays an important role in severe acute pancreatitis (AP). Previous studies have shown that intestinal permeability (IP), serum endotoxin and cytokines contribute to the early intestinal barrier dysfunction in AP. This study explored the predictive capacity of IP, endotoxemia and cytokines as prognostic indicators in AP patients. Methods: Eighty-seven AP patients were included in the study. The patients were classified into three groups according to the Balthazar computed tomography severity index (CTSI). We compared the biochemical parameters, including IP, serum endotoxin level and cytokine level among the three groups. The associations of IP with serum endotoxin, cytokines, CTSI, and other widely used biochemical parameters and scoring systems were also examined. Results: IP, serum endotoxin, interleukin (IL-6) and tumor necrosis factor (TNF)-α had a positive correlation with the CTSI of AP. Endotoxin, IL-6, TNF-α, CTSI, the Ranson/APACHE II score, the duration of hospital stay, complications and death significantly affect IP in the AP patients. Conclusions: We believe that IP with subsidiary measurements of serum endotoxin, IL-6 and TNF-α may be reliable markers for predicting the prognosis of AP. Further studies that can restore and preserve gut barrier function in AP patients are warranted. (Gut Liver 2012;6:505-511)

Biomechanical comparison of bone staple techniques for stabilizing tibial tuberosity fractures

Kyu-Tae Park,Min-Yeong Lee,Hwi-Yool Kim 대한수의학회 2023 大韓獸醫學會誌 Vol.63 No.3

This study compared the biomechanical properties of bone-stapling techniques with those of other fixation methods used for stabilizing tibial tuberosity fractures using 3-dimensionally (3D)-printed canine bone models. Twenty-eight 3D-printed bone models made from computed tomography scan files were used. Tibial tuberosity fractures were simulated using osteotomy. All samples were divided into 4 groups. Group 1 was stabilized with a pin and tension-band wire; group 2, with a pin and an 8 mm-wide bone staple; group 3, with 2 horizontally aligned pins and an 8 mm-wide bone staple; and group 4 with a 10 mm-wide bone staple. Tensile force was applied with vertical distraction until failure occurred. The load and displacement were recorded during the tests. The groups were compared based on the load required to cause displacements of 1, 2, and 3 mm. The maximum failure loads and modes were recorded. The loads at all displacements in group 4 were greater than those in groups 1, 2, and 3. The loads at 1, 2, and 3 mm displacements were similar in groups 1 and 3. There was no significant difference between groups 1 and 3. Groups 1 and 4 provided greater maximum failure loads than groups 2 and 3. Failure occurred because of tearing of the nylon rope, tibial fracture, wire breakage, pin bending, and fracture around the bone staple insertion. In conclusion, these results demonstrate that the bone-stapling technique is an acceptable alternative to tension-band wire fixation for the stabilization of tibial tuberosity fractures in canine bone models.