인스트루먼트 패널용 수용성 질감 도료의 물리적 성질

김억(Ok Kim),오우정(Woo-Jeong Oh),전용(Yong Chun),김영태(Young-Tae Kim),안재범(Jae-Beom Ahn),조영호(Youngho Cho) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_3

Physical properties of waterborne soft feel coatings for instrument panel were investigated. Soft feel coatings give warm and velvet touch for cold and hard plastic materials. Waterborne soft feel coating is composed with two parts. Part A contains polyester polyurethane dispersion (PE-PUD), OH-functional water dispersible polyurethane resin (PC-PUD) and OH-functional water dispersible alkyd resin (OH-PA). Part B contains hydrophilic hexamethylene diisocyanate trimer (HHDI). Soft feeling of coated panel was related with the amounts of PC-PUD and OH-PA. The physical properties of coated panel could be controlled by the NCO/OH ratio from Part A and Part B. Soft feeling was enhanced with relevant to PE-PUD content but the content of PE-PUD was limited because of weakening of coated film strength. For excellent touch and good property, the optimum composition of soft feel coat was PC-PUD(30%) and PE-PUD(20%). The results from all reliability tests satisfied soft feeling, scratch, chemical resistance and fogging.

OSP 투자지능화 시스템의 고찰

오구영,임미숙,정재우,조용환 충북대학교 컴퓨터 정보통신 연구소 2000 컴퓨터정보통신연구 Vol.8 No.1

본 논문은 OSP(Outside Plant) 투자지능화 시스템개발을 위해서 국내외에서 개발하여 사용하고 있는 선로투자공급 시스템들에 대하여 관심을 두고, 관련된 시스템들을 조사하여 각각의 시스템의 특징 및 구성에 대하여 분석하였다. 이러한 분석결과를 토대로 국내 통신 사업체에서 통신망 계획 및 분석을 위해 앞으로 개발하여야 할 선로투자공급 모형에 대한 기준을 제시한다. This paper analysed systems that are developed as relevant systems for OSP. We focused their distinction and composition of each system which are developed and used to interior and overseas. This result is able to propose the standard model of a Intelligent System for OSP model which have to develop system for plan and analysis of communication network to telecommunication operator.

난소 및 난소 종양 염전의 초음파 소견

오연희,이현경,이원재,이성우,박수성,윤혜원,임문환,심재철,김용탁,김성숙,김정란 동국대학교 경주대학 1993 東國論集 Vol.12 No.-

Acute torsion of the ovary and ovarian mass is a recognized surgical emergency, but rarely has the diagnosis been made preoperatively on the basis of imaging studies. The sonographic findings in 14 cases of surgically proven torsion of the ovary and ovarian mass are described. Mostly cystic ovarian mass, engorged vessel, dilated uterine tube, beak-like echo(torsion site), smooth mass wall thickening an free-fluid collection in cul-de-sac are described. More significant in terms of specificity were the demonstration in 6 cases(42.9%) of the smooth mass wall thickening and in 8 cases(57.1%) of a free fluid in the cul-de-sac. We report the sonographic findings of ovary and ovarian mass torsion that may suggest the preoperative diagnosis of this condition.

친환경농업 농가 컨설팅에 대한 반응 조사

오환중,차광홍,정우진,김길용,박노동 全南大學校 農業科學技術硏究所 2011 農業科學技術硏究 Vol.46 No.-

The interactions between Environment-Friendly Agriculture Research Center (EFARC) and farmers in Jeonnam Province area who have practiced environment-friendly agriculture (EFA) under guidances of EFARC were investigated through enquete. The enquete was conducted during July - September, 2010. One hundred and eighty nine farmers responded all inquiries among 200 farmers. The main results are summarized as follows: 1. Rice was the predominant crop grown by farmers (49%), and the next major was hot pepper (12%). Most farmers (95.3%) have practiced environment-friendly agriculture at the levels of no-pesticide (55.6%), lower pesticide (32.8%), and organic (6.9%). 2. Major motivations of practicing EFA are for the production of safe foodstuffs (52.6%) and for an increase of income (40.1%). 3. Around 3 quarters of the environment-friendly agriculture products are shipped through Nonghyup, the cooperative marketing. The price margin between ordinary agriculture products and EFA products was of 5~10% for 63.5% farmers, of 10~20% for 14.3% ones, and of 20~30% for 14.8% ones. 4. Bottlenecks for practicing EFA are in the order of the unstability of shipping price (34.9%), cultivation techniques (20.1%), excess labor input (19.6%), and control of disease and insect pest (18%). 5. It turned out that more than 90% farmers who have practiced EFA under guidance of EFARC recognized the consulting activities of EFARC as to be helpful for them. 6. Establishment of national organizations which are specialized in consultation for EFApracticing farmers has been suggested.

체육기공

최용어,김종우,오재근 韓國體育大學校 1997 論文集 Vol.20 No.-

Qigong is a way of strengthening body and mind through regulations of mind, respiration and posture which enables man to be cured from a disease and to improve their potentiality. Qigong is similar to sports considering its effect on human body and also can be considered as a way of psychiatric therapy regarding its effect in strengthening mentality. Sports Qigong is a newly developed science, in which sports and Qigong are cross matched and closely combined, and the purpose of it lies on improving potentiality of each part of a body through the Qigong and the principles and methods of modern sports science. Sports Qigong is widely studied and popular among countries including China. To improve the thoughts on the Sports Qigong, the concepts, current situation and study progress of the Qigong and Sports Qigong and the Shao-lin-nei-jin-yi-zhi-chan(少林內勁一指禪), one of the Sports Qigong are introduced here.

충남대학교 학술림 산책로 훼손실태 및 관리방안에 관한 연구

이준우,김명준,최윤호,전용준,오도교,김민호,이소연,이경형 충남대학교 농업과학연구소 2004 농업과학연구 Vol.31 No.2

This study concentrates an the trail of the CNU(Chungnam National University) forest. The amount of use and the pattern of damage are considered, as well as the extent of environmental damage. Finally, some managerial strategies are proposed in connection with sustainable maintenance. The trail of the university forest is composed of three sections; one is the neighborhood park and the Institute of Information Technology/Communications, the second is the Institute of Information Technology/Communications and the Dormitory, and the third section is the Dormitory and the Foreign prof's Apt. The total length of the trail is 2.6km. The daily amount of use is 1,269 visitors per day. The amount of using increased three times the amount of that in 1998. This study shows the pattern of damage of the trail in the order of root-exposure, widening, rock-exposure, deepening and the divergence in the frequency of occurrence of all these factors. Environmental damage is also graded thus: grade 3 is 27.4m, grade 4 is 0.8m, grade 5 is 1.5m, and grade 6 is 0.2m. Accordingly, some managerial strategies were proposed in connection with the sustainable trail maintenance.

n-Octane의 개질 반응에서 FAU와 MFI촉매의 탈 알루니늄의 의한 Si/Al비의 영향

유용호,정우진,이철우,오민,박성하,이원묵 한밭대학교 에너지청정기술연구소 2003 에너지청정기술논문집 Vol.3 No.1

제올라이트에서 Si/Al의 조성비는 산도에 큰 영향을 주므로 촉매의 활성 및 선택도도 큰 영향을 받는다. 본 연구에서는 상용화된 FAU 및 MFI 제올라이트를 탈 알루미늄 하여 산도를 변화시킨 후 노르말 옥탄의 개질 반응에서의 촉매특성을 살펴보았다. FAU와 MFI 제올라이트의 탈 알루미늄은 각각 열처리, 수증기 처리, 그리고 질산 처리 등 세 가지 서로 다른 방법으로 수행하였고, 처리된 제올라이트의 물성은 BET, XRD, SEM-EDS, TPD, FT-IR 등을 사용하여 측정하였다. 변형된 제올라이트 촉매들은 본 제조 조건에서 결정성을 그대로 유지하였으며, Si/Al 비는 3에서 30까지 증가하였고 산도는 크게 감소하였다. N-Octane의 개질 반응에서 촉매의 활성은 MFI계 촉매가 FAU계 촉매보다 더 우수하였고, 열처리한 경우가 수증기 처리한 경우보다 활성이 더 크게 나타났다. 수증기 처리한 경우는 열처리한 경우보다 촉매의 활성은 낮았지만 BTX 생성 억제 효과는 더 우수하였고, 산도가 높은 FAU 촉매는 분해반응에서 우수한 활성을 나타내었다. 개질 반응에서 일어나는 분해반응, 탈 수소반응, 그리고 이상화반응 등을 종합적으로 고려하면 열처리에 의하여 변형된 MFI계 촉매가 가장 우수하였다. The catalytic activity and selectivity of zeolites are significantly influenced by the Si/Al ratio, because it has strong effects on the acidity of zeolites. In this research, the catalytic characteristics were investigated by using dealuminated FAU and MFI zeolites as catalysts in the reforming of n-octane. Dealumination of zeolites was carried out in three different processes, i.e., thermal, steam, and nitric acid treatment, and their properties were measured by BET, XRD, SEM-EDS, TPD and FT-IR. The crystalline structure of zeolites were maintained after dealumination. Si/Al ratio was increased from 3 to 30 and the acidity was decreased drastically as Si/Al ratio increases. The catalytic activity of dealuminated MFI zeolite were superior to than that of FAU zeolite. Steam treated catalyst showed higher activity than thermally treated one, but that showed better performance than this in the inhibition of BTX generation. FAU zeolite with high acidity showed good selectivity to the decomposition reaction. In conclusion, thermally treated MFI zeolite show the highest activity in the n-octane reforming, considering all reactions (decomposition, dehydrogenation and isomerization).

Moving wall 형 LB막 정전용량의 주파수 의존성

이우선,오금곤,정용호 조선대학교 에너지.자원신기술연구소 1998 에너지·자원신기술연구소 논문지 Vol.20 No.2

LB layers of L-α-DLPC deposited by LB method were deposited onto n-type silicon wafer as Z-type film. Films made up of 8, 16 layers of lipid with long alkyl chain and the thickness of monolayer and multilayers was determined by ellipsometry. It was deposited Ag and Al onto LB layers and silicon wafer for electrode and exhibit high capacitance with low frequency. The MLS capacitor shows very high value of capacitance. The result indicated the lower leakage current and very high saturation value of capacitance was reached within 700-800 ㎊ when the thickness was 275Å.

이동로봇의 동적 경로계획

이우송,오세봉,안용근,문정훈,한성현 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

This paper propose a new path planning method for mobile robots. The creation method of the course approaches with the method of the frame line graph base where the calculation time becomes disturbance. The graph composition where is not the static course plan method of existing, a course search and repeats continuously changes a graph and proposes the course the dynamic routing plan method. The method which is proposed is composed of a course creation phase and a course improvement phase, each phase includes a graph composition and a course search process.

DLPC LB막의 C-V 특성

이우선,정용호,김남오 조선대학교 에너지.자원신기술연구소 1998 에너지·자원신기술연구소 논문지 Vol.20 No.2

MLS capacitor with lipid ultra thin films were deposited by Langmuir-Blodgett (LB) method on the sillicon wafer. The current versus voltage and capacitance versus voltage relationships are depend on the applied voltage, frequency and thickness of LB films. LB films deposited were made of L-α-DLPC, the 1 layer's thickness of 35Å was measured by ellipsometer. The result indicated the lower leakage current and very high saturation value of capacitance was reached within 700-800 ㎊ when the thickness was 275Å.