아파트의 적정 건설층수 결정을 위한 에머지(emergy) 평가

임정혁,강대석,이석모 한국환경과학회 2005 한국환경과학회지 Vol.14 No.5

The cost of the construction and management of new apartment buildings was evaluated using a monetary analysis and an emergy concept to provide a new perspective regarding the housing policy of Korea. The systems of analyses were typical apartment buildings with an area of 76.03m² per household in Korea built on the same size of land area. Three apartment buildings with different stories were evaluated and compared; 5-story, 15-story, and 20-story apartment buildings. The durable years of those apartments were assumed to be 40 years. The total cost of the construction and management of an apartment building was divided into three categories of construction, land purchase, and management. A 20-story apartment showed the highest cost and a 15-story apartment the lowest in the monetary cost analysis. In contrast, the emergy evaluation revealed a different pattern in the cost of construction and management, the cost increasing from a 5-story apartment to a 20-story one. This means that the higher the apartment constructed, the greater the cost in terms of real wealth. This result suggests that new evaluation methodologies like the emergy analysis should be used together with the monetary analysis to provide better insights on the national housing policy.

식민지시대 조선 소재 일본 연구기관의 방사성광물 탐사 원자폭탄개발계획 “니고연구(二號硏究)”와의 관계를 중심으로

임정혁 한국과학사학회 2008 한국과학사학회지 Vol.30 No.1

피리딘을 포함하는 고분자의 Langmuir-Blodgett 막 특성 연구

임정혁 忠州大學校 2005 한국교통대학교 논문집 Vol.40 No.2

The monolayer property and complex structure of an pyridine-containing polymer with metal ions were investigated at the air-water interface and in the LB films. An amphiphilic polymer, poly(N-((4-pyridinyl)methyl)maleimide-alt-1-octadecene) (PM-0), was synthesized by the reaction of poly(maleic anhydride-alt-1-octadecene) with 4-(aninomethyl)pyridine. A djmethylsulfoxide/chloroform solution of PM-0 was spread on pure water or aqueous metal ion subphases. The monolayers revealed high stability up to the surface pressure of 50mN/m. The images of Brewster angle microscopy revealed straight lines after monolayer collapse. The molecular structure and orientation in the LB films were investigated by means of FT-lR and atomic force microscopy (AFM).

칼릭스[4]아렌 自己組立 單分子膜의 크기 選擇的 分子認知 硏究

任正爀 충주대 2004 産業科學論文集 Vol.12 No.-

Self-assembled monolayers (SAMs) of monotiolated calix[4]arene (SH-Cal 4) on Au and Ag substrate were successfully constructed and characterized by Fourier transform-infrared(FR-IR) reflection absorption spectroscopy (RAS), surface-enhanced Raman scattering (SERS) spectroscopy, cyclic voltammetry (CV) and scanning tunneling microscopy (STM). FT-IR RAS spectrum and STM image indicated that SH-Cal 4 molecules have a well organized "stand-up" conformation on the surface. The measured diameter of SH-Cal 4 molecule, 14 Å, was in good accordance with that estimated from CPK model. From SERS and CV studies, it is demonstrated that SH-Cal 4 SAMs has a capability of size selective molecular recognition through the hydrophobic upper rim.

제왕절개 수술후 경막외강, 지주막하강 및 전신 투여 morphine이 위장관 기능의 회복에 미치는 영향

임정혁,손수창,최세진 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.2

Background : This study was designed to evaluate the effect of epidural, intrathecal and intravenous morphine analgesia on the recovery of gastrointestinal function after cesarean section. Methods : Eighty nine patients of ASA I or 2 were classified randomly into 3 groups. Group 1(n=32)received epidural anesthesia with 2% lidocaine and 0.5% bupivacaine, and once in a dose of 4mg morphine immediately after delivery through the epidural catheter. Group 2(n=32) received spinal anesthesia with 0.25% hyperbaric 8.75mg bupivacaine, and 0.25mg morphine and 10㎍ fentanyl at the time that spinal anesthesia was administered. Group 3(n=25) received intravenous morphine after recovery of general anesthesia as a 0.5mg/h background infusion with a lmg bolus and a lockout interval 10min during the first 24 hour. Results : Passing of flatus was noted 48.6±12.1 hours in group 1, 42.2±11.9 hours in group 2, and 50.8±5.9 hours in group 3. There was significant difference between group 2 and group 3(p<0.05).The duration of hospital stay was 94.8±19.7 hours in group 1, 95.7±19.7 hours in group 2 and 100.1±20.7 hours in group 3. Conclusions : Choice of postoperative analgesia may affect the recovery of gastrointestinal function after cesarean section. If convalescence protocols are adjusted to take advantage of the earlier recovery of bowel function, there may be a more shorter hospital stay.

전상운 선생님에 대한 추억

임정혁 한국과학사학회 2018 한국과학사학회지 Vol.40 No.1

자동차용 전류센서의 가속수명시험법 설계 및 유효성 검증

임정혁,신민경,이상훈,조정민 한국신뢰성학회 2018 한국신뢰성학회 학술대회논문집 Vol.2018 No.5

Conformational Studies of the Hemicyanine LB films

임정혁,박진호,이경호,김재호 한국공업화학회 1998 한국공업화학회 연구논문 초록집 Vol.1994 No.1

아스팔트 도로포장 유지보수용 표면처리공법의 공용성 평가

임정혁,김영수,백철민 한국도로학회 2015 한국도로학회논문집 Vol.17 No.2

PURPOSES : The objective of this study is to evaluate the performance properties of chip seals and fog seals with polymer-modified emulsions. METHODS : The performance of chip seals and fog seals was evaluated on the basis of common issues in surface treatments. Granite aggregate and four types of asphalt emulsions (one of the unmodified and three of the modified emulsions) were used considering the usage in field. A Vialit test was performed to determine the aggregate retention, and the MMLS3 (Third Scale Model Mobile Load Simulator) test was conducted to determine the aggregate retention, bleeding, and rutting. In addition, the fog seal specimens were tested by the BPT (British Pendulum Test) to evaluate skid resistance. RESULTS AND CONCLUSIONS : Overall, the polymer-modified emulsions (PMEs) showed better aggregate retention and bleeding resistance for both chip seals and fog seals. When comparing the performance of the PMEs, the difference was not considerable. In addition, PMEs present significantly better rutting resistance than unmodified emulsions. For skid resistance, if the recommended mix design is applied, the specimens do not cause issues with skid resistance. Although all of the fog seal specimens were over the criteria for skid resistance, the specimen fabricated by the high emulsion application rate (EAR) of the unmodified emulsion was nearly equivalent to the skid value criteria. Therefore, the use of an unmodified emulsion with a high EAR should be carefully applied in the field.

표면 플라즈몬 공명 신호의 증폭을 위한 새로운 금 콜로이드 센서칩 제조와 특성 연구

임정혁,이경호,고광락,강신원,김재호 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

New gold colloidal film sensor chips were employed to enhance the sensitivity of the Surface Plasmon Resonce (SPR). Au collodal solutions were synthesized, and Au colloidal films were fabricated by immobilization of colloid on vacuum deposited Au film through the coupling agent of 1,8-diaminooctane. Specific interaction of human IgG antibody to human antigen was monitored by in situ SPR measurement from both a smooth and a Au colloidal films. Au colloidal film sensor chips resulted in 27 % enhancements effect for the same reaction on SPR angle shifts compared to a smooth Au film.