메탄으로부터 합성가스 생산을 위한 압축점화 개질기 연구

임문섭,홍성인,홍명석,전영남 조선대학교 환경공해연구소 2007 環境公害硏究 Vol.20 No.1

Recently, various technologies have been devised to convert methane, a main ingredient of natural gas and biogas, into hydrogen as part of efforts to develop new low pollution energies and reduce greenhouse gases. This study, different from existing methods of reformation, suggests a new form of a partial oxidation compression ignition reformer, to which the concept of super-adiabatic combustion is applied. In addition, the study also conducts experiments by variables about the oxygen/methane ratio, the total flow rate. the intake preheating temperature and the oxygen enrichment ratio, all of which affect the production of hydrogen, in order to understand the optimal feature of the reformer's movement. Results showed that the concentration of hydrogen was 20.84%, under the optimal standard condition of oxygen/methane ratio 0.26, total flow rate 106.5 L/min and intake preheating temperature 355℃. Under the same condition, the concentration of hydrogen became 20.31% when the oxygen enrichment ratio was 55.6%.

인체 유방암종에서 Cyclic-Dependent Kinase Inhibitor, p27^Kip1 발현의 의의

송상용,김덕환,서연림,고영혜,김대식,남석진,양정현 대한병리학회 1998 Journal of Pathology and Translational Medicine Vol.32 No.12

조선대학교 의과대학 의학과 학사편입제도의 전향적 검토

임성철,박상기,도남용,박상학,이승일,송창훈,박종 朝鮮大學校 附設 醫學硏究所 1998 The Medical Journal of Chosun University Vol.23 No.1

There are many advantages and disadvantages under the limited bachelor's admission system. To diminish the demerits and to increase the merits of this system, the authors posed questions to the faculties and students of the Department of Medicine. Chosun University College of Medicine and other colleges in Korea. The questionnaire was made according to trends and feelings in this system. We received a lot of information and suggestions as to how to improve the system, in the following paper we discuss and report the prospective aspects of the bachelor's admission system.

韓國動亂 이후의 한국 改新敎建築 禮拜空間 平面特性에 관한 硏究

임광성,박현철,김남응 대한건축학회 2004 대한건축학회논문집 Vol.20 No.2

The purpose of this study is to understand the variation characters of the Protestant worship space after the Korean war which classified by evaluation of its period, type, denomination, and scale. The results are summarized as follows: (1) Postwar Korean Protestant worship space can be classified as 8 different shapes-rectangular, square, cross, trapezoid, circular, fan-type, elliptical, and irregular shape. (2) A rectangular type was traditional plan until 1968 before Je-Am church plan was introduced with a circular shape to furtherance diversification of the space plan. (3) The Presbyterian church dominated in adoption of a rectangular shape and the Methodist for a square type. This is an evident to make assumption that the Methodist is less conservative and open-minded to new forms. (4) Frequently as well, square, fan-type, and circular form is adopted in a small scale church. This phenomenon was not intended to shorten the distance between altar and nave, but rather related to exuviate from conventional form, pursuit symbolism, and imitation of an aptitude of a large scale church. (5) Application of the multi-media facilities and popularizations are the transformation factors of the worship ceremonies-provoke a conversion of a new church planning concept in the future.

표준 셀 라이브러리 P&R 포팅과 테스트 칩의 설계

임호민,김남섭,김진상,조원경 한국항행학회 2003 韓國航行學會論文誌 Vol.7 No.2

본 논문에서는 최신의 미세공정인 0.18㎛ CMOS 공정을 이용한 표준 셀 라이브러리를 설계하고, 이를 P&R(Placement and Routing) CAD 틀에 사용할 수 있도록 포팅한다 제작결과를 검증하기 위하여 간단한 테스트칩을 제작하였으며 설계에 사용된 표준 셀 라이브러리는 0.18㎛ 아남반도체의 공정이다. 이러한 설계 및 제작과정을 통하여 최신의 미세공정을 이용하여 디지털 시스템의 자동설계가 가능함을 확인하였다. In this paper, we design standard cell libraries using the 0.18um deep submircom CMOS process, and port them into a P&R (Placement and Routing) CAD tool. A simple test ship has been designed in order to verify the functionalities of the 0.18um standard cell libraries whose technical process was provided by Anam semiconductor. Through these experiments, we have found that the new 0.18um CMOS process can be successfully applied to automatic digital system design.

齒科用 貴金屬 合金과 陶材사이의 化學的 結合에 關한 實驗的 硏究

林時德,남상용 대구산업정보대학 1992 논문집 Vol.6 No.-

Real bonding between metal and porcelain is influenced by various bonding Mecanisms which also influence each other, and is caused by aseries of complicated thermochemical reaction. For this reason, clear determination of the degree and distribution. Fators influencing the bonding strength consist of chemical bonding(including primary bond)52%, Mechanical bonding 22%, compression bonding 26%. Effects of the Base Metal Elements Added to Allots. The elements Sn, In, and Fe were added originally in accordanc with the concept that they might strengthen the Alloy though a dispersion effect. We heated the Degudent G. U Dental porcelain and analysis the surface elemental chang by Energy Dyspersive X-ray analysis and obtained the result that mainly the In element was concentrated to the alloy surface.

벼에 대한 돈분뇨 혐기성 소화액비의 사용적량 구명

임동규,박우균,권순익,남재작,이상범 한국환경농학회 2002 한국환경농학회지 Vol.21 No.4

가축분뇨를 혐기성소화하여 메탄가스를 생산하고 난 다음 혐기성 소화액비를 비료자원으로 활용하기 위하여 농가포장에서 액비의 시용적량을 구명하였다. 벼 생육상황은 액비 100%+화학비료구가 전 시기를 통해 가장 양호하였으며, 그 다음으로 표준시비구가 분얼기에만 양호하였으나 그 이후에는 표준시비구·액비 100%구 및 액비 150%구 간에는 서로 차이가 없었다. 시기별 식물체중 전질소함량은 분얼기 및 출수기에는 추비의 영향으로 표준시비구가, 유수형성기에는 액비 100%+화학비료구가 높았다. 벼 수량은 액비 100% 및 150%구들이 표준시비구와 비슷하거나 약간 증수되었으며, 액비 100%+화학비료구는 고중의 증가 및 도복으로 인하여 표준 시비구보다 수량이 오히려 약간 낮았다. 수확기 질소흡수량은 표준시비구가 가장 높았고 ,시비질소 효율은 액비 100%구에서, 시비질소 이용율은 액비 100%+화학비료구에서 높았다. 시기별 토양중 NH₄-N 및 NO₃-N함량 변화는 액비 100%+화학 비료구가 타 처리구보다 높았다. 시기별 관개수 중 NH₄-N 및 NO₃-N함량 변화는 분얼비의 영향으로 급격히 증가하였다가 급격히 감소하였는데, 증가한 시기에는 표준시비구 및 액비 100%+화학비료구가 가장 높았다. 시기별 침투수 중 NH₄-N함량 변화는 액비 150%구들에서 많이 용탈되었구 NO₃-N 함량은 액비에 화학비료를 추비한 구들에서 많이 용탈되었다. 혐기성 소화액비는 액비 중의 질소성분을 분석하여서 표준시비량의 질소성분에 맞추어 시용하여야 한다. This study was carried out to evaluate the proper application amount of anaerobic digestion waste water and the environmental influence on rice. The waste water collected after methane fermentation process of pig manure was used as a liquid manure. Liquid manure 100%+chemical fertilizer 30%(LM 100%+CF 30%) treatment was the most favorable at all growth stages of rice. The LM 100%+CF 30% treatment was applied to 100% amount of liquid manure which was correspond to the same amount of nitrogen for the standard application amount on rice, with adding 30% amount of chemical fertilizer(urea) at tillering stage. The yields of rice in the treatments of 100%(LM 100%) and 150% amount(LM 150%) of liquid manure were similar or a little higher than NPK treatment, but LM 100%+CF 30% treatment was less than the NPK treatment due to the increase of straw weight and plant lodging. In periodic changes of the NH_4-N and NO_3-N contents, the LM 70%+CF 30% treatment in paddy soil was the highest in all treatments. The NPK and the LM 100% treatments in irrigation water quality were higher than other treatments. In infiltration water quality, M44-N content was leached out much in the LM 150% treatment and NO_3-N content was in the LM 100%+CF 30% treatment. The proper application amount of anaerobic digestion waste water as a liquid manure must be to analyse the nitrogen content of the waste water and to apply the same amount of nitrogen for the standard application amount on rice.

好氣性 固定床 生物膜 反應槽의 메디아로 폐칫솔의 利用可能性 檢討에 관한 基礎硏究 : 처리효율을 중심으로

임채영,김정권,성낙창,신남철,김형석,전기일 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.1

This study was conducted to evaluate the possibility to apply the waste toothbrush to aerobic fixed biofilm reactor for media. The media used for this research was waste toothbrush (WTB) and Pall-Ring. The feed used for this research was synthetic wastewater which was made at the laboratory. The COD, NH₄^(+)- N and PO₄^(-3)-P removal efficiency variations with the organic loading rate was examined at this research. The conclusions drawn from these experiments are listed below : 1. When the influent COD concentration was respectively 300mg/ℓ, 600mg/ℓ, the COD removal efficiency was decreased with the increase of the organic loading rate and the COD removal efficiency for Pall-Ring was higher than the COD removal efficiency was 0.4~1.9%. 2. When the influent NH₄^(+)-N concentration was respectively 13mg/ℓ (COD 300mg/ℓ), 25mg/ℓ (COD 600mg/ℓ ), the NH₄^(+)-N removal efficiency for Pall-Ring was slightly higher than the NH₄^(+)-N removal efficiency for Wastetooth brush. The difference of NH₄^(+)-N removal efficiency was about 0.5~1.5%. 3. When the influent PO₄^(-3)-P concentration was respectively 7mg/ℓ (COD 300mg/ℓ), 14mg/ℓ (COD 600mg/ℓ ), the PO₄^(-3)-P removal efficiency for Pall-Ring was higher than the PO₄^(-3)-P removal efficiency for Wastetooth brush. The difference of PO₄^(-3)-P removal efficiency was about 1.1~2%. 4. COD, NH₄^(+)-N and PO₄^(-3)-P removal efficiencies show very small difference between Pall-Ring and Wastetooth brush as media. So it was showed that wastetooth brush can be used as media very successfully.

초등학교 과학교실 및 과학동아리 관련 현장 조사 및 프로그램 개발 모형 설정

임청환,김남일,권성기,고한중,이성호 한국과학교육학회 2005 한국과학교육학회지 Vol.25 No.2

본 연구의 목적은 과학 교실 및 과학반, 과학동아리 활동과 관련하여 일선 학교 현장에서는 어떤 문제점을 갖고 있으며 어떤 요구가 있는지 조사연구를 통해 알아보고 그 결과를 바탕으로 활동 프로그램을 개발하기 위한 개발 모형을 제시하는 것이었다. 146개 초등학교의 과학 관련 교사를 대상으로 설문 조사하였으며 조사결과, 교사들은 다양한 문제점과 해결 덜'간을 제시하였는데 다음과 같은 시사점을 얻을 수 있었다. 첫째, 다양한 과학 활동에 대한 행·재정적 지원이 절실히 필요하다. 둘째, 과학비전공 교사도 쉽게 다룰 수 있는 활동 프로그램의 제공이 필요하다. 셋째, 재미있는 활동으로 구성된 프로그램이 있어야 한다. 넷째, 프로그램은 준비가 용이한 활동으로 이루어져야 한다. 다섯째, 탐구 활동 중심의 평가 방법이 제시되어야 한다. 이러한 조사 결과를 바탕으로, 교사, 학생, 운영 환경을 축으로 하는 프로그램 개발 맥락을 설정하고 주제 설정, 활동구성, 차시구성, 활동지 구성, 교사용 지침서 구성의 단계로 이루어진 개발 모형을 제안하였다. The purpose of this study was to investigate the needs of elementary school teachers on extra-science programs and to suggest development model for extra-science program. Survey research was conducted on 146 science-related teachers all over the country. As the result, teachers presented several problems and solutions on extra-science activities and programs. The suggestions from the results are as follows. First, more administrative and financial supports are required. Second, it must be the programs with which any teachers, regardless of their major fields, can execute easily. Third, the programs should be interesting for students to do. Fourth, it should be easy to prepare activities and materials, Finally, the inquiry-focused assessment method should be presented in each program. Based on these suggestions, the context of development of programs was established. Three axises of, students, teachers, and environment, were included in the context. The model of development of programs was set up based on the context. It was constructed with six process steps, Confirmation of theme, Composition of work frame, Organization of each period, Worksheets for students, Guidebook for teachers, Completion, and one or two assessment criteria in each process steps. It must be useful to development of extra-science programs that is appropriate to the need of teachers.

치아우식증 수복용 북합레진의 개발과 치아 적합성에 관한 연구 제1편 : 치과용 복합레진의 개발과 기계적 성질의 평가에 관한 연구

임호남,박상진,김형찬 大韓齒科器材學會 1992 대한치과재료학회지 Vol.19 No.2

An esthetic and permanent restorative materials that could be placed directly into the cavities prepared in anterior teeth would be an important contribution to dental practice and public well-being. This studies were planned to produce some experimental composite resins with the evaluation of literatures related to manufacture processes of it. It was assumed that through this studies we wish to get some fundamental data using for the domestic production of commercial dental composite resins with the confirmation of manufacturing process repoted by forein researchs, and to evaluate the physical properties of it. Summarized manufacturing process used in this studies include the synthesis of BIS-GMA inlaboratory, the silanization of fillers, and the its incorporation into prepared BIS-GMA resin to make two paste system. As a first research project, its usefulness as a composite resin and characteristics under the some experimental conditions were evaluated by the measurements of hardening time, compressive strength, diametral tensile strength, and elastic modulus, and the observation of surface using SEM. Following conclusions were drawn: 1. Concentration control of initiator and accelerator from 2% to 4% resulted the working time ranged from 0.33 minutes to 1.00 minute and the setting time from 1.66 minute to 5 minutes. 2. Compressive strength of unfilled resins was highest on KM-33 specimens, diametral tensile strength were decreased by rise of accelerator contents, but it was increased by the rised content of initiator. 3. Higher storage temperature made all of experimental resins became excellent ones. 4. By the incorporation of filler, resins become harder and stronger with the higher values of measurement, but it was decreased by the long term immersion in water. 5. Both of filled and unfilled resins showed the higher dimetral tensile strength over each allowable values of American Dental Specification.