http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
자기조립단분자막을 위한 보편적이고 기능화된 긴 사슬 알킬티올 연결자의 제조
유동진 ( Dong Jin Yoo ),이경섭 ( Kyong Sub Lee ),김애란 ( Ae Rhan Kim ),남기석 ( Kee Suk Nahm ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.3
In this research, the preparation processes for making a series of ω-mercapto alkylamine 1 and ω-mercapto alkanoic acid 2 useful for studying of the self-assembled monolayer(SAM) are described. The preparation methods of the first goal materials, ω-mercapto alkylamines 1 were carried out as follows: First, ω-phthalimide alkanol 3 was synthesized from commercially available potassium phthalimide derivatives and ω-bromoalkanol in DMF at 80℃ via substitution reaction. After refluxing ω-phthalimide alkanol 3 with hydrazine hydrate in ethanol followed by treating with c-HCl, ω-aminoalkanol 4 was obtained in 76~98% yield, accompanied with side-product 5. Bromination of hydroxyl moiety of ω-aminoalkanol 4 using aqueous hydrobromic acid furnished ω-bromoamine 6 in 34~97% yields. Substitution reaction 6 with thiourea in 95% ethanol gave ω-aminoalkanthiuronium 7, which was treated with aqueous strong base and aqueous strong sulfuric acid gave desired products, ω-mercapto alkylamines 1 through overall 5 steps. The second target material, ω-mercapto alkanoic acid 2 was prepared via 2 steps. ω-bromo alkanoic acid was reacted with thiourea to give ω-thiourea alkanoic acid 7 in 69-85%, which was treated with aqueous strong base and strong acid to furnish ω-mercapto alkanoic acid 2 in 50~98%. The fabricated long-chain alkylthiol(LCAT) can be used as linkers to immobilize protein, enzyme and various kinds of biomolecules on the surface of metallic materials(Au, Pt, Ti) by SAM, and can be useful chemical tools for the application study on the surface modification of metallic materials.
충돌수를 이용한 파이프라인 데이타패스 합성 스케쥴링 알고리즘
유동진(Yu Dong Jin),유희진(Yoo Hee Jin),박도순(Park Do Soon) 한국정보처리학회 1998 정보처리학회논문지 Vol.5 No.11
As this paper is a scheduling algorithm for the synthesis of a pipelined datapath under resource constraints in high level synthesis, the proposed heuristic algorithm uses a priority function based on the collision count of resources. In order to schedule the pipelined datapath under resource constraints, we define the collision count and the priority function based on the collision count, a number of resource, and the mobility of operations to resolve a resource collision. the proposed algorithm supports chaining, multicycling, and structural pipelining to design the realistic hardware. The evaluation of the performance is compared with other systems using the results of the synthesis for a 16 point FIR filter and a 5th order elliptic wave filter, where in most cases, the optimal solution is obtained.