금속이온 농도에 의한 고분자 LB막의 전자 특성

박재철,정상범,유승엽 대한전자공학회 2000 電子工學會論文誌 IE (Industry electronics) Vol.37 No.2

금속이온 농도를 변화시켰을때의 IMI-O 고분자 LB막에 대한 단분자막의 거동과 MIM구조의 LB막 소자에 대한 전기 특성 및 유전 특성을 조사하였다. π-A 등온선의 측정에서 금속 이온 농도가 증가함에 따라 단분자가 차지하는 극한 단면적이 증가하였다. 이러한 변화는 금속이온 농도 변화에 따른 금속이온의 강도 증가에 의한 단분자막의 거동의 차이에 의한 것으로 생각된다. 전압-전류 특성에서 ohmic 영역의 기울기로부터 구한 전기전도도는 금속 이온의 농도가 증가할 수록 증가하였다. 이것은 전개분자와 금속이온간의 결합에 의한 극한 단면적의 변화가 전기전도도에 직접적인 관계가 있기 때문으로 생각된다. 한편, 유전 특성에서 금속이온의 농도가 증가할 수록 허수부 유전율이 최대가 되는 주파수 역시 증가하였다. 따라서 금속이온의 증가에 의해 완화시간 γ가 감소되는 것을 알 수 있었다. We have investigated dielectric properties of IMI-O LB films for the effect of complex concentration by electrical conductivity, dielectric constant and dielectric relaxation time at different frequencies. In the surface pressure-area$\pi$-A) isotherms for the increase of $FE^{3+}$ concentration, the molecular area was expanded with $FE^{3+}$concentration increase by electrostatic repulsion between the polymer chains and hydrophobic increase of ionic strength. In the I-V characteristics, it is found that the limiting area has effects on the change of conductivity And, the dielectric relaxation time decreased for increase of the $FE^{3+}$concentration.

영.호남 산간지역 정주생활권 마을숲의 비교 - 전북 진안군과 경남 함양군 지역을 사례로 -

박재철,정경숙,김영숙,장혜화 한국조경학회 2002 韓國造景學會誌 Vol.30 No.1

This paper compares the difference between the village groves in the Jinan settlement region and the Hamyang settlment region in Honam and the Youngnam mountainous region. The results are as follows: Fifty-one village groves in the Jinan legion were found and 40 village groves were found in the Hamyang region. It was established that the village groves in the Jinan region of Honam province were conserved better than those of Hamyang region of Youngnam province. In the Jinan area, the village groves were principally found in the Jinan-eup and the Hamyang regions, primarily in Seosang-myun and Aneui-myun. So it was determined that the village groves were distributed inequitably in the two regions. In L / W ratio, the Jinan region is 3.6 and Hamyang region is 2.0 Jinan is 1.8 times greater than Hamyang. Therefore, it was concluded that Jinan is stronger than Hamyang in linear function of the village groves. Stone stooge for complementation function was found in 11 village groves in the Jinan region and 6 village groves in Hamyang. So the percentage of the remaining stone storage is 15-20 % of all village groves. Regarding grove makeup, the village gloves in Jinan region is deciduous forest principally. In contrast, the groves of Hamyang are principally coniferous forest. The dominant tree of the Jinan-gun region is Zelkova serrata, but in Hamyang it is Pinus densiflrora. By number, Hamyang region has two times the trees than Jinan region. In density of stand, the Hamyang region is 76.2% higher than Jinan region. In height and diameter of trees, the Jinan region is greater than the Hamyang region. It was identified that RSI of both region is 40%. So in density of trees, both region are sparse. This paper has a limit in ideiltiting the differences between Yolmg-nam ar\ulcorner Hnam village groves because comparative review only examined two regions.

증기 원동소의 엑서지 손실에 관한 연구

박재철,장문석,이창식,Park, J.C.,Jang, M.S.,Lee, C.S. 대한설비공학회 1989 설비공학 논문집 Vol.1 No.3

The purpose of this paper is to obtain enthalpy balance and exergy analysis for the energy losses in a steam power plant. The enthalpy and exergy analysis of the steam power plant were carried out on the various output of steam turbine. While enthalpy analysis shows that circulating loss in the condenser is maximum, exergy evaluation of the power plant shows that the losses of the boiler and turbine are considerably larger than those of condenser and feed water heater. Most irreversible losses of the power plant occur at the boiler. For improving the performance, the precise study about the irreversible losses of the boiler is necessary.

정읍지역 도로 주변림의 식생구조에 관한 연구 : 김제 원평에서 정읍 감곡 사이의 지방도 주변림을 사례로 Case study on the Roadside Forests from Wonpyung to Kamgok

박재철,노재현 又石大學校 1994 論文集 Vol.16 No.-

This study was executed to investigate and analize the roadside forrests. 14 roadside forests from Wonpyung to Kamgok were investigated to identify the vegetation structure as a sequential research of pervious one(A study on the Roadside forests in Jungeup- Gun, Chunbuk-Do). They were classified 3 commmunities of Pinus densiflora, Pinus thunbergii, Pinus rigida by analysis of dominent species. Inter-analysis between each community was implemented. As results, it was clarified that T-2 layer and shrub layer in three communities is very poor. T-1 layer and herb layer was plenty of vegetation. Pinus densiflora. Pinus thunbergii and pinus rigida were appeared in canopy layer in each community. The degree of similarity in community was lower than the natural forest near the site.

마이크로파 플라즈마 CVD법에 의한 섬유집합조직 다이아몬드막의 합성

박재철,김병상 한국전기전자재료학회 1996 電氣電子材料學會誌 Vol.9 No.5

Fiber-textured diamond films have been deposited on scratched silicon(100) substrate by micro wave .plasma enhanced chemical vapor deposition at the condition of micro wave power : 950 W, pressure : 60 torr, H$_{2}$ gas flow rate : 50 sccm, CH$_{4}$ gas flow rate : 1.5 sccm, substrate temperature : about 900.deg. C and deposition time : 20 hours. The films were characterized by mean of scanning electron microscopy, Raman spectroscopy and X-ray analysis.

노동운동의 새로운 희망, 지역 조직화에 있다

박재철,이혜정 한국비정규노동센터 2012 비정규 노동 Vol.- No.96

全北農村地域 海水浴場 背後林에 관한 硏究

朴在鐵 又石大學校 附設 造景計劃硏究所 1997 造景硏究論叢 Vol.2 No.-

The purpose of this study is on performing the research about the backside groves of seaside beach in Chonbuk-Do province. For this, I selected all beachside forests of seaside beach used in present. Through interview and survey. 12 groves were selected. Thereafter I analyzed the physical. socio-behavioral. ecological condition of the groves by the site survey interview and review of previous researces. The results are as follows. 1. The groves were planted to protect the villages and crop lands from strong sea wind. So those were composed of evergreen forests to accomplish such purposes effectively. Those were significant elements in constitution of landscape and scenery of seaside beach. 2. The form of the groves were linear and rectangular or linear for the purpose of windbreak. 3. Those were small scale(0.1 0.5㏊) in comparison with other province. 4. Almost groves were formed on the slopeless land. 5. No groves were indicated by the law as protection tree etc. But Dongho grove(No. 7.8) was only indicated by the forest law as conservation forest for scenery. 6. In ownership, the rate of groves owned by the self-governing body (Gun) is higher than the village groves and roadside groves. 7. In vegetation structure, those were one class forest composed of only tall tree of upper class. 8. Principal dominent species in upper tree was Pinus thunbergii. Pinus densiflora Robinia pseudoacacia appeared each in one region. 9. Those were not growing normally in aspect of height and breast diameter of tree in comparison with the village groves and roadside groves. 10. The planting density of those was three times higher than village groves in Chonbuk-Do province.

녹색 인프라 구축을 위한 정책

박재철,양홍모,장병관,Park, Jae-Chul,Yang, Hong-Mo,Jang, Byoung-Kwan 한국조경학회 2012 韓國造景學會誌 Vol.40 No.5

녹색 인프라 구축이란 정원, 공원, 녹지, 하천, 습지, 농경지, 그린벨트 등을 녹색길로 연결하여 네트워크를 형성하는 것을 의미한다. 녹색 인프라는 인간은 물론 환경에도 유익한 기능과 편익을 제공하고, 건강하고 활기찬 지역사회를 만드는데 기여한다. 수질관리 측면에서도 녹색 인프라는 강우유출수를 저류하고, 비점오염물을 저감시키는 장점이 있다. 녹색 인프라에 대한 이런 장점과 편익이 알려지면서 환경 선진국에서는 도시 및 지역 개발에 녹색 인프라를 적극적으로 활용하고 있다. 국내의 경우 회색 인프라 위주의 국가 건설정책으로 가뭄, 홍수, 산사태 등 자연재해 발생, 수질과 대기 질 악화, 생물다양성의 저하, 지역경제 활성화 저해 등 다양한 환경적 경제적 문제를 야기하고 있다. 이들 문제를 해결하기 위해서는 정부 차원에서 녹색 인프라 구축에 대한 정책의 수립과 수행이 필요하다. 녹색 인프라 구축에 관한 미국의 사례와 국내의 상황의 분석을 통하여, 녹색 인프라를 구성하는 40개의 항목을 추출하였고, 국내에 적용 가능한 녹색 인프라 구축 정책수단으로 공공부문 5개와 민간부문 4개를 제시하였다. 녹색 인프라 구축을 위한 법안과 관련법의 개정안을 제안하였고, 녹색인프라를 확충할 수 있는 방안들을 제시하였다. The Green Infrastructure Framework refers to an interconnected network formed by greenways that links gardens, parks, green spaces, streams, wetlands, agricultural lands, and green belts. Green infrastructure supports diverse functions to environment, provides various benefits to people, and helps in the community's health and viability. It can store stormwater runoff and abate its non-point source pollutants. Due to its advantages and profits, advanced countries in environment policies have adopted green infrastructure in planning and implementing urban and regional development. The Korean government and municipalities have focused upon grey infrastructure investment in the past, which causes occurrence of natural disasters such as draught, flood, and landslides, degradation of water and air quality, decline of biodiversity, and even inhibition of economic activities. In order to alleviate these problems, it is requested to formulate and implement policies for green infrastructure at the national government level. USA and Korean situation of green infrastructure were investigated; forty components of green infrastructure were drawn. Nine policies utilized in the USA cases were identified, which are applicable to Korea. Among them, five policies can be implemented in public sector and four in private one. The green infrastructure law needed in Korea was suggested. The amendments of laws regarding green infrastructure and alternatives expending it were proposed.

관리에 따른 마을비보숲의 식생 변화 - 진안 서촌 마을비보숲과 원연장 마을비보숲을 사례로 -

박재철,장효동,Park, Jae Chul,Zhang, Xiao Dong 한국농촌계획학회 2018 농촌계획 Vol.24 No.2

The purpose of this study is on identifying vegetation change through monitoring representative complementary village forests according to different management. For this, two of complementary village forests around Mai mountain which many ones remain were selected. Those are complementary village forests of Seochon and Wonyeonjang. Seochon forest is a representative one which is managed naturally and Wonyeonjang one is a representative one which is managed artificially. The field survey for monitoring was preformed in 2002 and 2007, 2016. D(Dominant degree) and S(Sociability degree) were measured by Brown-Blanquet's method in field survey. Through the analysis and review of survey data, the change of species richness, appearing species characteristics, species composition and layer structure etc. according to different management was monitored. As a result, it can be seen that natural succession has increased species diversity, improved vegetation structure and circulation of complementary village forest. On the other hand, excessive anthropomorphic management was found to be detrimental to the health of the forests and to the vegetation structure and species composition. And it was found that excessive management threaten sustainability and periodical proper management is necessary. Through this review, the useful management direction of complementary village forests was suggested.

수중과 지상에서 대각선 패턴 운동이 만성 뇌졸중 환자의 균형 자신감과 호흡 기능에 미치는 효과 비교

박재철,이동규,Park, Jae-Cheol,Lee, Dong-Kyu 대한고유수용성신경근촉진법학회 2021 PNF and Movement Vol.19 No.2

Purpose: The purpose of this study was to compare the effects of underwater and ground-based diagonal pattern exercises on the balance confidence and respiratory functions of chronic stroke patients. Methods: Thirty chronic stroke patients were assigned randomly to an experimental (n = 15) or control (n = 15) group. The experimental group performed an underwater diagonal pattern exercise. The control group performed a ground-based diagonal pattern exercise. Training was conducted once a day for 30 minutes, five days per week for six weeks. Balance confidence was measured using the Activities-Specific Balance Confidence Scale-Korea version. Respiratory function was measured using a spirometer. Results: In a comparison within groups, the experimental and control groups showed significant differences in balance confidence after the experiment (p < 0.05). In a comparison between the two groups, the experimental group showed a more significant difference in balance confidence than the control group (p < 0.05). In a comparison within groups, the experimental group showed a significant difference in respiratory functions after the experiment (p < 0.05). In a comparison between the two groups, the experimental group showed a more significant difference in respiratory functions than the control group (p < 0.05). Conclusion: Based on these results, underwater diagonal pattern exercises effectively improved the balance confidence and respiratory functions of chronic stroke patients.