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반도체 초정밀장비의 진동허용규제치를 고려한 지지구조의 동특성 개선에 관한 연구
손성완,이홍기,백재호 한국반도체디스플레이기술학회 2003 한국반도체장비학회지 Vol.2 No.2
In the case of a vibration sensitive equipment, it require a vibration free environment to provide its proper function. Especially, lithography and inspection device, which have sub-nanometer class high accuracy and resolution, have come to necessity for producing more improved Giga Class semi conductor wafers. This high technology equipments require very strict environmental vibration criteria in proportion to the accuracy of the manufacturing. In this paper, the dynamic analysis and modal test were performed to evaluate the dynamic properties of the constructing clean room structure. Based on these results, a structural dynamic modification(SDM) were required to satisfiy the vibration allowable limit for pression machine. Therefore, in order to improve the dynamic stiffness of clean room structure, the VSD system which can control the force applied on structure, were adopted and its utility were proved from dynamic test results of the improved structure after a modification work.
반도체 초정밀장비의 진동허용규제치를 고려한 지지구조의 동특성 개선에 관한 연구
손성완,이홍기,백재호 호서대학교 반도체제조장비국산화연구센터 2003 학술대회 자료집 Vol.2003 No.1
전동에 민감한 각종 정밀장비를 갖추고 있는 공장구조물은 설립하는 설계 초기단계에서부터 정밀장비의 정상 운용을 위하여 장비 업체 제시한 진동허용규제치 및 동특성허용규제치를 만족할 수 있도록 공장구조물 설계시 진동측면에 대하여 동적(動的) 특성을 검토해야만 한다. 이러한 설계조건을 만족시켜주기 위한 방안으로 외부에서 정밀장비로 유입되는 진동에 대한 진동절연을 위하여 진동전달률 이론을 적용하여 방진효율 산출하는 방법과 정밀장비에서 발생하는 동하중을 고려하여 공장구조물에 대한 동적설계를 수행하는 것으로, 구조물 동특성을 요구되는 만큼 구조물의 동특성 변경하는 SDM(Structural Dynamic Modifacation)방법이 주로 활용된다. 이에 본 연구에서는 앞서 언급한 구조물의 동적설계시 후자조건인 구조물의 동특성을 변경하고자 하는 경우에 실구조물에 하중을 정량 적으로 저절하며 가할 수 있는 VSD 시스템을 이용하여 구조물의 동특성을 변화시키는 것을 동적해석으로 예측하였고, 현장에서 실제 동적실험으로 구한 결과를 동적설계목표치와 비교하여 유용성에 대하여 확인하였다.
손성완 대한수의사회 2003 대한수의사회지 Vol.39 No.2
수의사는 동물질병의 예방과 치료뿐만 아니라 축산물의 위생관리 및 안전성확보에 관한 최고의 전문가이다. 또한 축주와 가장 긴밀한 관계를 유지하고 있으며 신뢰관계를 구축하고 있다. 따라서 축산현장에서 올바른 동물용 의약품의 사용과 사양관리에 관해 적극적으로 지도$\cdot$홍보하는 책임있는 수의사의 역할이 잔류예방과 안전한 축산물의 생산을 위한 관건이라 할 수 있다.
식육중 잔류 항균물질의 검출을 위한 Bacillus megaterium 디스크 검사킷트 개발
손성완,조병훈,진남섭,이혜숙,육순학,김재학,이재진,이영순 한국식품위생안전성학회 1996 한국식품위생안전성학회지 Vol.11 No.4
Various antimicrobial drug screen tests have been used in order to ensure food safety. However, the conventional screen teats, the Swab Test on Premises(STOP, USA), the Calf Antibiotic and Sulfa Teat(CAST, USA) and the European Economic Community 4-plate Test(FPT, EU) are not sufficiently rapid or sensitive enough to detect low levels of sulfa drugs in meat. We developed a new screen test kit for the determination of the antimicrobial residues in meat called the Bacillus megaterium Disk AssayBmDA). A comparison of BmDA with the older screen tests showed BmDA was as good as the older ones with several advantages. The new test kit is faster-it can be read in 4-6 hours instead of 16-18 hours. Moreover, BmDA can discriminate sulfa drugs from other antimicrobial drugs because p-aminobenzoic acid countacts the inhibiting action of sulfa drugs. Minimum detectable levels of sulfa drugs were significantly improved at the level of 0.025-0.1 ppm compared with the level of 1.0 ppm in FPT. A comparison of BmDA with the older screen tests in HPLC confirmed meat samples exeeded the Korean tolerance value of 0.1 ppm showed BmDA was the most sensitive in the microbiological screen tests. As the microbiological screen tests have already known, a person familiar with simple laboratory techniques should have no difficulty in using it to detect antimicrobial residues in meat. This would be a simple, economic method of antimicrobial residues detection which might be succesfully used by many laboratories.
손성완,서정원,신승주,정성근,Sung Wan Son,Jung Won Seo,Seong Joo Shin,Sung Kun Chung 대한안과학회 2010 대한안과학회지 Vol.51 No.12
Purpose: The goal of the present study was to compare the stability of the 3-piece (TecnisⓇ ZA9003) and single-piece (AcrySofⓇ IQ) aspheric intraocular lenses (IOL) by testing decentration, tilt, anterior chamber depth, and refraction. Methods: The subjects of this study consisted of 101 eyes who had undergone cataract surgeries with a 3-piece aspheric IOL (54 eyes) and with a single-piece aspheric IOL (47 eyes). The decentration, tilt, anterior chamber depth, and refraction were measured on postoperative day 1, 1 month, and 2 months, using an anterior eye segment analysis system (EAS-1000, Nidek, Japan). Results: There was a statistically significant difference in the decentration on the postoperative day 1 (p = 0.04). However, there was no statistically significant difference on postoperative 1 month (p = 0.15) and 2 months (p = 0.13). There was no statistically significant difference in the tilt on postoperative day 1, 1 month, and 2 months. There was no statistically significant difference in the anterior chamber depth on postoperative day 1, 1 month, and 2 months. There was a statistically significant difference in the refraction on postoperative day 1 (p = 0.03). However, there was no statistically significant difference on postoperative 1 month (p = 0.07) and 2 months (p = 0.07). Conclusions: There was no statistically significant difference in the decentration, anterior chamber depth, and refraction between the 3-piece and single-piece aspheric IOL. Therefore, there is no difference between the 3-piece and single-piece aspheric IOL in the capsular bag stability until 2 months postoperatively. J Korean Ophthalmol Soc 2010;51(12):1584-1589