http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Design for additive manufacturing of customized cast with porous shell structures
임영은,김나현,최혜진,박근 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.11
Additive manufacturing (AM) recently has been changing from conventional Rapid prototyping (RP) to direct fabrication of functional parts. As a direct fabrication method, a promising application of AM is to make personalized or customized parts; biomedical applications customized to human’s bodies can provide improved functionalities for an example. In this study, a customized plastic cast is developed to replace traditional plaster casts. For customization, its basic shape is defined out of three-dimensional (3d) scan data of a human arm. This cast is designed to have a number of holes for lighter weight and better ventilation, and to be printed using a Material extrusion (ME) type 3d printer that uses thermoplastic polymer filaments. Finite element (FE) analyses are then performed to evaluate the structural safety and stiffness of the printed cast with porosity. Considering that the structural safety and stiffness are degenerated due to the porous structure, design reinforcements are suggested to improve the bending stiffness of the porous cast. FE analyses are then performed with variations of design parameters of the reinforcement structures, from which we obtain the best design candidate that provides higher specific stiffness than the conventional solid structure. A porous-customized cast with lighter weight and better ventilation can thereby be developed successfully.
Coprinus congregatus에서 선형으로 전환한 plasmid DNA를 사용하여 phosphinothricin 저항성에 대한 형질전환
임영은,김순자,최형태,Leem, Young-Eun,Kim, Soon-ja,Choi, Hyoung-Tae 한국미생물학회 1997 미생물학회지 Vol.33 No.4
Coprinus congregatus에서 laccase를 과량생성하는 변이주를 대상으로 phosphinothricin 저항성을 선택표지로 사용하여 형질전환을 수행하였다. 항생물질에 대한 저항성을 부여하는 plasmid DNA(pBARGEM 7-1)를 제한효소로 가수분해하여 원형질체에 형질전환을 수행한 결과 plasmid DNA $1{\mu}g$ 당 약 500여개의 형질전환체를 얻었다. 도입된 plasmid는 형질전환체의 chromosomal DNA에 삽입되어 있음을 Southern blot으로 확인하였다. Transformation of Coprinus congregatus with a linearized plasmid has been successfully carried out using phosphinothricin resistance gene as a dominant selectable marker. The transforming frequency was about 500 transformants per microgram of DNA using the protoplast-$CaCl_2$ method. The transforming vector pBARGEM 7-1 which had the phosphinothricin resistance gene was detected in the restriction enzyme fragments of chromosomal DNA from a transformant by Southern hybridization.
비대칭 라만 광섬유 레이저 공진기를 이용한 다파장 광원생성
임영은,한수욱,김한글,박창수 한국물리학회 2008 새물리 Vol.56 No.5
We propose a novel technique to simply generate a multiple-wavelength Raman fiber laser (RFL) based on an asymmetrical all-fiber Raman fiber laser cavity by using a broadband chirped fiber Bragg grating (CFBG). The broadband CFBG has a high reflectivity across the spectra range from 1403 to 1464 nm. The multiple-wavelength RFL output coupler was composed of discrete fiber Bragg gratings (DFBGs) with center wavelengths of 1415, 1430, and 1445 nm. The total output power of the three-wavelength RFL with an asymmetrical Raman resonator was about 1.675 W with a power conversion efficiency of 21.6 \%. We have shown that an asymmetric laser cavity is a very flexible and useful solution to multiple-wavelength RFL construction. Furthermore, we have demonstrated a tunable Raman fiber laser by using a combination of a broadband CFBG and a tunable fiber Bragg grating (TFBG) with a center wavelength of 1415 nm, which is tuned by adjusting the longitudinal strain in the wavelength range from 1410 to 1420 nm. Even though the slope efficiency of the tunable laser is relatively low, we can see a realistic possibility of a tunable multiple-wavelength Raman fiber laser with an asymmetric cavity. 본 논문에서는 유도 라만 산란 현상을 이용한 라만 광섬유 레이저 개발의 일환으로, 기존의 다파장 라만 광섬유 레이저 광원 생성을 위한 대칭구조의 레이저 공진기를 비대칭 구조의 레이저 공진기로 대체하여 그 성능과 효과를 확인하고 그 응용 범위를 확대하고자 하였다. 라만 증폭기용 펌핑 광원으로 이용하기 위한 비대칭 라만 레이저 공진기는, 대칭구조에서 반사단의 단일 브라그 (discrete Fiber Bragg Grating: DFBG) 격자들을 하나의 광대역 브라그 격자 (broadband chirped Fiber Bragg Grating: broadband CFBG)로 대체한 것이다. 비대칭 레이저 공진기는 광대역 브라그 격자의 범위 (1403 $\sim$ 1464 nm)내에서 출력단의 브라그 격자의 수와 파장을 다양하게 선택하여 용도에 맞도록 변경할 수 있으며, 대칭구조에서 발생하는 브라그 격자의 중심파장 불일치에 의한 효율 저하 문제를 고려하지 않도록 하였다. 무엇보다도 반사단의 브라그 격자 수를 효과적으로 줄일 수 있어서 제작 비용을 절감할 수 있는데, 이는 파장 가변형 레이저 광원 생성에도 효과적이라 할 수 있다. 비대칭 레이저 공진기를 이용한 출력파장 가변형 레이저 개발을 위해 파장 가변형 브라그 격자를 제작하고, 응용 가능성을 확인하였다.
임영은,김인걸,김태열,윤세원,서삼기,이정우,Lim, Young-Eun,Kim, In-Geol,Kim, Tae-Youl,Yoon, Se-Won,Seo, Sam-Ki,Lee, Jeong-Woo The Korean Society of Physical Therapy 2007 대한물리치료학회지 Vol.19 No.6
Purpose: This study examined the correlation between the maximum voluntary isometric contraction (MVIC) and the muscle architecture in the extensor carpi radialis longus muscle during MVIC. Methods: The muscle area, volume were measured using a ultrasound imaging system to obtain the muscle architecture during the MVIC. For the mechanical muscle strength measurements, the MVIC was obtained using a dynamometer. Results: There was a significant correlation between the MVIC and the muscle area (r=0.498, p<0.01) and muscle volume (r=0.602, p<0.001). There was a significant correlation between the MVIC and density (r=-0.429, p<0.05). The area showed significant correlations with the muscle volume (r=0.699, p<0.001) and density (r=-0.429, p<0.05). In addition, there was a correlation between the volume and muscle density (r=0.555, p<0.01). Conclusion: There is close relationship between the MVIC and the muscle architecture in the extensor carpi radialis longus muscle during the MVIC.
NGN 전송 층의 자원 관리를 위한 프로토콜 중립적인 정보 모델링과 웹 서비스 구현
임영은,권태현,김춘희,한태만,정유현,차영욱,Yim, Young-Eun,Kwon, Tae-Hyun,Kim, Choon-Hee,Han, Tae-Man,Jeong, You-Hyeon,Cha, Young-Wook 한국정보처리학회 2007 정보처리학회논문지 C : 정보통신,정보보안 Vol.14 No.5
NGN is a packet-based converged network to support session and non-session based services in QoS-enabled broadband transport technologies. Resource and admission control functions(RACF) of NGN have been considering COPS and SNMP as resource management protocols to collect network topology and resource status information of transport network. This paper defines requirements of resource management in NGN transport network, and proposes protocol independent information model to keep consistency of data models of each resource management protocol. Based on this information model described with UML class diagram, we designed and implemented NGN resource management system on Web Services. NGN은 QoS가 지원되는 광 대역 전달 망에서 세션 및 비-세션 서비스를 지원하기 위한 패킷 기반의 융합 망이다. NGN의 RACF(Resource and Admission Control Functions)는 전송망의 토폴로지 및 자일 상태 정보곤 수집하기 위하여 COPS와 SNMP를 자원 관리 프로토콜로 고려하고 있다. 본 논문에서는 NGN 전송 층의 토폴로지 및 자원 상태 관리를 위한 요구 사항을 정의하며 자원 제어 프로토콜에서 정의되는 데이터 모델들의 일관성을 유지하기 위해 프로토콜 중립적인 정보 모델을 제안한다. 또한, UML로 기술된 정보 모델을 이용하여 웹 서비스 기반의 NGN 자원 관리 시스템을 선계 및 구현하였다.
Heat-stress 온도 적용이 교감신경활동에 미치는 영향
임영은,양은영,김태열,Lim, Young-Eun,Yang, Eun-Young,Kim, Tae-Youl 대한임상전기생리학회 2007 대한임상전기생리학회지 Vol.5 No.2
The purpose of this study were to investigate influence of heat stress temperature on sympathetic nerve activities. Subjects were 8 normal adults (4 men, 4 women, 21.36 years old). First sympathetic nerve activities were measured at the point that increase of core temperature stops at the state of applying normal thermic temperature (NIT; $34^{\circ}C$). After measurement, temperature of bathtub was increased to heat stress temperature (HST; $46^{\circ}C$) and sympathetic nerve activities were remeasured at the point that temperature increase stops. Sympathetic skin response (SSR) were analyzed using EMG, IR thermometer, and auto stethoscope. SSR latency showed significant differences at both palms by electrical stimulation to median nerve (p<.05). Electrical stimulation to forehead showed significant difference at left palm (p<.05) and electrical stimulation to navel showed significant difference at right palm (p<.05). Median nerve in changes of SSR amplitude showed significant differences at both palms in HST (p<.01). Electrical stimulation to navel showed significant difference at left palm (p<.05). Ts of forehead and xiphoid process showed significant differences (p<0.01). Tc of oral (p<0.05) and inner ear (p<0.01) showed significant differences. Pulse rate showed significant difference (<0.05). This study showed that immersion in HST had significant decrease of excitability in sympathetic nervous system compared to immersion in NTT.