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문승희,박수정,조현구,황윤찬,오원만,황인남 大韓齒科保存學會 2009 Restorative Dentistry & Endodontics Vol.34 No.4
본 연구는 순면 잔존 치질의 두께와 후방 복합레진의 색상이 최종 수복된 치아표면의 색상에 미치는 영향을 알아보고자 시행하였다. 배경판으로 사용될 복합레진은 Filtek Supreme (3M ESPE, St. Paul, U.S,A.)의 Al, A2, A6D, Bl, B2, B3,C1, C2 C6D를 선택하였다. 배경판으로 사용될 복합레진 시편은 직경 10 mm, 두께 4.5 mm로 각 shade당 한 개씩 제작하였다. 순면 잔존 치질은 상악 중절치 치관의 순면을 제외한 나머지 부위를 아크릴릭 레진을 이용하여 매몰 후 저속의 Diamond Wheel Saw (Isomet ; Buehler Ltd, Lake Bluff, U.S.A.)를 이용하여 주수 하에 순면으로부터 2.5 mm 두께로 절단하였다. 절단된 상아질측 표면을 2000번 사포로 연마하여 2.2 mm 두께의 시편을 얻었다. 분광광도계 Spectrolino^(Ⓡ) (Serial No. 3257-18522, GretagMacbeth, Regensdorf, Switzerland)를 이용하여 치아시편을 9개의 복합레진 시편위에 접촉면에 수분이 있는 상태로 위치시켜 치아 순면색상을 측정하였다. 그 후, 치아시편의 상아질 측면을 1.0 mm까지 0.3 mm 간격으로 연마하면서 복합레진 시편위에 위치시켜 동일한 방법으로 색상을 측정하였다. 모든 시편에서 L^(*)값과 b^(*)값은 배경색에 무관하게 치아시편의 두께가 두꺼워질수록 증가하는 양상을 보였으나(p <0.05), a^(*)값은 배경색에 무관하게 두께에 따른 유의한 차이를 보이지 않았다. In this study we evaluated the influence of both the thickness of residual enamel and the color of the composite resins applied to lingual surface on the labial surface color. Background plates were made by randomly (Al, A2, A6D, Bl, B2, B3, Cl, C2, C6D) selected colors of Filtek Supreme (3M ESPE, St. Paul, U.S.A.) composite resin. Crown portion of 9 maxillary central incisors were cut off and embedded with acrylic resin except labial surface. Samples of average thickness of 2.2 mm were obtained after cutting it in a thickness of 2.5 mm from the labial surface and sandpaper polish. The shade of composite resin background was measured using Spectrophotometer (Spectrolino^(Ⓡ), GretagMacbeth, Regensdorf, Switzerland). And CIE L^(*)a^(*)b^(*) value of 2.2 mm thickness tooth samples were measured on the 9 composite resin backgrounds. And then, the cutting side of tooth samples was ground to the extent of 1.9 mm, 1.6 mm, 1.3 mm, 1.0 mm and placed on composite resin backgrounds and measured L^(*)a^(*)b^(*) values with the same method. In all samples, L^(*) value and b^(*) value seemed to have a tendency of decreasing as thickness of tooth sample becomes thinner regardless of background colors (p < 0.05). But, a^(*) value didn't show the significant differences depending on the thickness.
원수희(Su-hee Won),김수겸(Su-kyum Kim),채종원(Jong-won Chae),한조영(Cho-young Han),전형열(Hyoung-yoll Jun),이준희(Jun-hui Lee),박수향(Su-hyang Park),이재원(Jae-won Lee) 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.5
1N급 단일추진제 하이드라진 추력기 개발모델에 대한 인수수준 랜덤 진동시험이 수행되었다. 랜덤 진동시험은 기존 항공우주연구원의 1lbf 추력기의 시험절차를 참고하여 진행되었다. 랜덤 진동시험 결과로부터 1N급 추력기 개발모델로 구성된 이중추력기모듈의 고유진동수는 기준치를 훨씬 상회하였으며, 구조적으로 강건하다는 것을 확인하였다. 또한 진동시험 동안 추력기 내부 촉매의 손상은 없었으며, 이로 인한 연료공급 유로의 막힘 현상도 발생하지 않았다. Acceptance level random vibration test for development model of 1N-class monopropellant thruster has been performed. The random vibration test was carried out based on the KARI test procedure for 1lbf thruster. From the test results of random vibration, the natural frequency of the dual thurst module composed of 1N-class development model thrusters was much higher than the standard and the structural robustness was verified. The catalyst damage during the vibration test was not observed and the plugging phenomenon was not occurred either.
Development of 3-aryl-1isoquinolinamines as potent antitumor agents based on CoMFA
( Su Hui Yang ),( Hue Thi My Van ),( Thanh Nguyen Le ),( Daulat Bikram Khadka ),( Suk Hee Cho ),( Kyung Tae Lee ),( Eung Seok Lee ),( Young Bok Lee ),( Chang Ho Ahn ),( Won Jea Cho ) 영남대학교 약품개발연구소 2011 영남대학교 약품개발연구소 연구업적집 Vol.21 No.-
Su Jin Yoo,Jae Hui Kim,Tae Gon Lee,Jong Woo Kim,Sung Won Cho,Jung Il Han 대한안과학회 2017 Korean Journal of Ophthalmology Vol.31 No.2
Purpose: To evaluate the 3-month natural course of recurrent macular edema secondary to branch retinal vein occlusion (BRVO) treated with intravitreal bevacizumab. Methods: This retrospective, observational study included 36 eyes with macular edema secondary to BRVO. All patients were initially treated with intravitreal bevacizumab for macular edema. Recurrence of macular edema was either not treated (untreated group) or treated with a single intravitreal bevacizumab injection (treated group). Central foveal thickness (CFT) and best-corrected visual acuity (BCVA) were compared at the time of recurrence and 3 months later. Results: At the time of recurrence, the mean CFT and logarithm of the minimum angle of resolution BCVA were 484.9 ± 124.1 μm and 0.58 ± 0.26 in the untreated group (n = 19) and 456.3 ± 126.8 μm and 0.51 ± 0.21 in the treated group (n = 17), respectively. Three months later, the mean CFT and BCVA had changed to 493.7 ± 123.9 μm and 0.62 ± 0.29 in the untreated group and 294.7 ± 104.4 μm and 0.40 ± 0.24 in the treated group, respectively. The differences in CFT and BCVA between the two time points were not significant in the untreated group (p = 0.106 and p = 0.687, respectively), whereas statistically significant differences were noted in the treated group (p = 0.002 and p < 0.001, respectively). Conclusions: Unlike the first episode of macular edema following BRVO, recurrent macular edema following intravitreal bevacizumab therapy did not spontaneously resolve, suggesting the potential benefit of prompt treatment.
초기에 좋은 시력을 보였던 결절맥락막혈관병증 환자를 대상으로 한 유리체강내 항혈관내피성장인자 치료의 2년 결과
Su Jin Yoo,Jae Hui Kim,Jung Il Han,Jong Woo Kim,Chul Gu Kim,Dong Won Lee 한국망막학회 2017 Journal of Retina Vol.2 No.1
Purpose: To investigate 2-year treatment outcomes of anti-vascular endothelial growth factor (VEGF) therapy in eyes with polypoidal choroidal vasculopathy (PCV) with good baseline visual acuity. Methods: This retrospective, observational study included 21 eyes (10 eyes with a subfoveal polyp, 11 eyes with an extrafoveal polyp) of 21 subjects diagnosed with PCV. All eyes had a baseline best-corrected visual acuity (BCVA) of 20/25 or better and were administered an initial treatment of three intravitrial anti-VEGF injections at one-month intervals. Additional anti-VEGF treatments were administered as needed for recurring cases. BCVA and central foveal thickness (CFT) obtained 24 months after diagnosis were compared with baseline values. Results: Mean logarithm of the minimal angle of resolution (logMAR) BCVA was 0.07 ± 0.04 at baseline and 0.19 ± 0.29 approximately 24 months after initial diagnosis, a slight difference that was not statistically significant (p = 0.560). Of the 21 eyes included, 17 eyes (80.9%) had stable vision and 4 eyes (19.0%) had a ≥0.2 deterioration in logMAR BCVA. Twenty-four-month CFT (212.9 ± 76.1 μm) was significantly lower than baseline CFT (324.6 ± 121.2 μm, p = 0.015). Conclusions: Two-year visual outcomes following anti-VEGF therapy in eyes with PCV and good initial visual acuity were generally favorable. However, logMAR BCVA deteriorated by ≥0.2 in 19.0% of treated eyes.
Su Hyun Bong,Geun Hui Won,Tae Young Choi 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.2
Objective The purpose of this study was to evaluate the effects of adding music therapy (MT) to cognitive-behavioral therapy (CBT) on symptoms of smartphone/internet addiction and psychiatric comorbidities. Methods Overall, 155 patients diagnosed with addiction were assigned to either the CBT-MT group or CBT group. Both groups received CBT for 8 weeks, while the CBT-MT group received additional MT. The intervention was completed by 67 and 71 participants in the CBT-MT and CBT groups, respectively. Results The total scores of Young Internet Addiction Scale (YIAT) and Smartphone Addiction Proneness Scale (SAPS) decreased significantly (p<0.001 for both) in both groups, while the total scores of State Anxiety Inventory for Children (SAIC) (p<0.001), Trait Anxiety Inventory for Children (TAIC) (p<0.001), Conners-Wells’ Adolescent Self-Report Scale-Short form (CASS(S)) (p=0.048), and Barratt Impulsiveness Scale-11 (BIS-11) (p<0.001) decreased only in the CBT-MT group. The decrements in YIAT (p=0.025), SAIC (p=0.043), TAIC (p=0.011), and BIS-11 (p=0.012) in the CBT-MT group were significantly greater than those in the CBT group. Conclusion Combined MT and CBT improved the symptoms of smartphone/internet addiction, anxiety, and impulsivity in adolescents. This combination could therefore be an effective treatment of smartphone or internet addiction along with behavioral disorders such as anxiety and impulsivity.Objective The purpose of this study was to evaluate the effects of adding music therapy (MT) to cognitive-behavioral therapy (CBT) on symptoms of smartphone/internet addiction and psychiatric comorbidities. Methods Overall, 155 patients diagnosed with addiction were assigned to either the CBT-MT group or CBT group. Both groups received CBT for 8 weeks, while the CBT-MT group received additional MT. The intervention was completed by 67 and 71 participants in the CBT-MT and CBT groups, respectively. Results The total scores of Young Internet Addiction Scale (YIAT) and Smartphone Addiction Proneness Scale (SAPS) decreased significantly (p<0.001 for both) in both groups, while the total scores of State Anxiety Inventory for Children (SAIC) (p<0.001), Trait Anxiety Inventory for Children (TAIC) (p<0.001), Conners-Wells’ Adolescent Self-Report Scale-Short form (CASS(S)) (p=0.048), and Barratt Impulsiveness Scale-11 (BIS-11) (p<0.001) decreased only in the CBT-MT group. The decrements in YIAT (p=0.025), SAIC (p=0.043), TAIC (p=0.011), and BIS-11 (p=0.012) in the CBT-MT group were significantly greater than those in the CBT group. Conclusion Combined MT and CBT improved the symptoms of smartphone/internet addiction, anxiety, and impulsivity in adolescents. This combination could therefore be an effective treatment of smartphone or internet addiction along with behavioral disorders such as anxiety and impulsivity.
Hui-Su Won,Keun-Yong Eom,Jin-Beom Chung,Man-Seok Han,박철수,Hyunsook Lee,Sang-Suk Lee,Do-Guwn Hwang 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.73 No.7
The purpose of this study was to investigate the impact of quality assurance (QA) phantoms designed with different material to verify the accuracy of dose distribution for volumetric modu- lated arc radiotherapy (VMAT). Homogeneous and heterogeneous QA phantoms are developed to compare the pretreatment verification according to the different materials made in the phantom for routine VMAT of lung cancer. These phantoms have a quadrature rectangular shape with horizon- tal and vertical lengths of 300 mm and 315 mm, respectively, and with inserts of various slabs. The homogeneous QA phantom was constructed using only polymethyl methacrylate ( = 1:19 g/cm3). The heterogeneous QA phantom was constructed using a ceramic fiber board with a density of 0.3 g/cm3, which is similar to that of the lung in human thorax. Overall, the average gamma agreement values for the homogeneous and the heterogeneous QA phantoms were observed to be higher than 94.9% and 95.4% for two energies and the usual criteria. In addition, this study showed that the gamma agreement values obtained for both the homogeneous and the heterogeneous QA phantom agreed to within 2% for both the 2%/2 mm and the 3%/3 mm criteria. Furthermore, no statistically significant difference was observed in the gamma agreement values obtained using the homogeneous and the heterogeneous QA phantoms for both energies and the usual criteria (p > 0:05). Consequentially, this study found that patient specific QA results were not affected by phantoms made of the different materials.