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강상욱,권오민,최형민,곽영제,Kang, Sang-Wook,Kwon, O-Min,Choi, Hyung-Min,Kwark, Young-Je 한국섬유공학회 2008 한국섬유공학회지 Vol.45 No.6
Nanofibers of phenylsilsesquiazanes (SSQZ), as a precursor of inorganic silicon nitride nanoweb, was prepared using the electrospinning process. The SSQZ was prepared by ammonolysis of phenyl trichlorosilane and condensation of the resulting aminosilanes. The molecular weight of resulting SSQZ increased with initial concentration of phenyl trichlorosilane, reaching plateau above 20wt% of the silane. When the SSQZ was electrospun alone, it did not form fiber even with 20wt% concentration of SSQZ. However, it was possible to prepare fibers by adding poly(ethylene oxide) (PEO) as a viscosity enhancer. The diameter the of electro spun fibers was modified by the total polymer content and the content of PEO. The best result was obtained when the total concentration of the polymer was in the range of 15 to 20 wt% while the SSQZ/PEO ratio was 95/5.
액와접근법을 이용한 무기하 내시경적 갑상선 절제술: 634예에 대한 수술 결과
강상욱,정종주,윤지섭<SUP>1<,SUP>,성태연,이승철,이용상,남기현,장항석,정웅윤,박정수,Sang-Wook Kang,Jong Ju Jeong,Ji-Sup Yoon,<SUP>1<,SUP>,Tae Yon Sung,Seung Chul Lee,Yong Sang Lee,Kee-Hyun Nam,Hang Seok Chang,Woong Youn Chung,and Ch 대한갑상선-내분비외과학회 2008 The Koreran journal of Endocrine Surgery Vol.8 No.1
고정단 평판의 전 주파수 대역 고유치 추출이 가능한 NDIF법 개발: 제2부(예제 연구 및 고찰)
강상욱(Sang Wook Kang) 한국소음진동공학회 2024 한국소음진동공학회 논문집 Vol.34 No.2
A problem arises in an eigenvalue analysis of an arbitrarily shaped clamped plate using the NDIF method. When the number of nodes is increased to improve the accuracy of the analysis results, the lower-order eigenvalues are not extracted because of the divergence of the system matrix in the low-frequency range. In Part 1 of this report, the cause of this problem was identified using a circular clamped plate with an exact solution, and a new NDIF method theory was proposed to overcome this problem. Part 2 reports the results of example verifications and analyses that were performed on clamped plates with two different shapes and no exact solution to prove the validity and accuracy of the proposed method. These example verifications confirmed that the proposed method could accurately extract eigenvalues and the eigenmode in an entire frequency range regardless of the number of nodes.
국제우주정거장에서 수행된 한국우주식품 관능평가 결과분석
강상욱(Sang-Wook Kang),최기혁(Gi-Hyuk Choi),이소연(So-Yeon Yi),김성수(Sung-Soo Kim),송범석(Beom-Seok Song),김재훈(Jae-Hun Kim),이주운(Ju-Woon Lee) 한국항공우주학회 2009 韓國航空宇宙學會誌 Vol.37 No.8
본 논문에서는 한국우주인이 국제우주정거장에서 수행한 한국우주식품 10품목에 관한 관능평가결과를 분석하였다. 개인의 기호도 차이 때문에 관능평가 점수가 낮은 품목도 있었지만 대부분 높은 점수를 받았다. 해외우주인도 한국우주식품에 관하여 높은 평가를 하고 있어 향후 한국우주식품의 국제화 가능성도 확인할 수 있었다. 향후 유인우주탐사를 대비하여 한국우주식품의 품목 다양화와 우주에서 편리하게 사용할 수 있는 기능성을 갖춘 한국우주식품용 포장지 개발이 필요하다. We analyzed the result of sensory evaluation for the 10 items of Korean Space Foods performed by Korean astronaut in ISS. Although there were low score items because of the individual preference difference, Most items received the high score. Also, we can confirm the possibility of the internationalization of the Korean Space Foods because international astronauts gave the high valuation. we should develop the various space foods and food package which are easy to use in space for the human exploration in the future.
갑상선암에 대한 로봇 보조 내시경적 갑상선 절제술; 100예에 대한 초기 경험
강상욱 ( Sang-wook Kang ),정종주 ( Jong Ju Jeong ),윤지섭 ( Ji-sup Yun ),성태연 ( Tae Yon Sung ),이승철 ( Seung Chul Lee ),이용상 ( Yong Sang Lee ),남기현 ( Kee-hyun Nam ),장항석 ( Hang Seok Chang ),정웅윤 ( Woong Youn Chung ) 대한갑상선학회 2008 International Journal of Thyroidology Vol.1 No.2
Background and Objectives: Various surgical procedures have been performed using surgical robot in recent years and most reports proved that application of robotic technology for surgery is technically feasible and safe. The aim of this study is to introduce our technique of robot-assisted endoscopic thyroid surgery and demonstrate its utility in the surgical management of thyroid cancer. Materials and Methods: From October 4<sup>th</sup> 2007 through March 14<sup>th</sup> 2008, 100 patients with papillary thyroid cancer underwent robot-assisted endoscopic surgeries using a gasless trans-axillary approach. This novel robotic surgical approach allowed adequate endoscopic access for thyroid surgeries. All the procedures were completed successfully using the da Vinci surgical system (Intuitive Surgical, Sunnyvale, California, USA). We used four robotic arms with this system; a 12 mm telescope and three 5 mm instruments. The 3-dimensional magnified visualization obtained by the dual-channel endoscope and tremor-free instruments controlled by robot system helped surgeon do sharp and precise endoscopic dissection. Results: We performed 84 less-than total and 16 total thyroidectomies with ipsilateral central compartment node dissection. Mean operation times was 136.5 min. (range 79∼267 min.) in which the actual time for thyroidectomy with lymphadenectomy (console time) was 60.0 min. (range 25∼157 min). The average number of lymph nodes resected was 5.3 (range 1 to 28). There was no serious complication. Most patients could go home within 3 days after surgery. Conclusion: Our technique of robotic-assisted endoscopic thyroid surgery using a gasless trans-axillary approach is feasible, safe and promising for the selected patients with thyroid cancer. We suggest application of robotic technology for endsocopic thyroid surgeries could overcome the limitations of conventional endoscopic surgeries in the surgical management of thyroid cancer.
지속가능한 도시 메타볼리즘을 활용한 도시의 안전성 평가프레임워크
강상욱(Sang Wook Kang),김유미(Yu Mi Kim),백종인(Jong In Baek),김태호,임광현,반영운(Young Un Ban) 한국지역개발학회 2016 한국지역개발학회 세미나 논문집 Vol.2016 No.1
This study aimed to propose a framework for a sustainable urban metabolism which could be used as a means to assess the safety of a city, as illustrated above. The sustainable metabolism framework for assessing the safety of a city is made up of five core rules that should be followed in the development process and a safety assessment process. Based on this safety assessment process, an analysis was done on the components that would allow a sustainable development of a city, establishing the metabolism, and a final version of the safety assessment framework was designed by analyzing the factors that affect the safety of a city.