• Title/Summary/Keyword: science town

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Immobilization of L-Lysine on Zeolite 4A as an Organic-Inorganic Composite Basic Catalyst for Synthesis of α,β-Unsaturated Carbonyl Compounds under Mild Conditions

  • Zamani, Farzad;Rezapour, Mehdi;Kianpour, Sahar
    • Bulletin of the Korean Chemical Society
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    • v.34 no.8
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    • pp.2367-2374
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    • 2013
  • Lysine (Lys) immobilized on zeolite 4A was prepared by a simple adsorption method. The physical and chemical properties of Lys/zeolite 4A were investigated by X-ray diffraction (XRD), FT-IR, Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-vis. The obtained organic-inorganic composite was effectively employed as a heterogeneous basic catalyst for synthesis of ${\alpha},{\beta}$-unsaturated carbonyl compounds. No by-product formation, high yields, short reaction times, mild reaction conditions, operational simplicity with reusability of the catalyst are the salient features of the present catalyst.

Preliminary Biotop Mapping Using High-Resolution Satellite Remote Sensing Data

  • Shin, Dong-Hoon;Lee, Kyoo-Seock
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.856-858
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    • 2003
  • Biotop map can be utilized in the urban area for nature conservation and impact assessment for the proposed activities. High resolution satellite data such as IKONOS and KOMPSAT1-EOS were used to classify land use activities in biotop mapping. After land use classification, field -check was done to survey the wildlife and vegetation. These maps were combined and the boundaries were delineated to produce the biotop map. Within the boundary the characteristics of each polygon were identified, and named. This study was carried out at Daedok Science Town in Taejeon Metropolitan Area. The purpose of this study is to produce the biotop map using high resolution remote sensing data together with other ground data.

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Self-Assembly Modification of Perfluorosulfonic Acid Membranes for the Application to Direct Methanol Fuel Cells

  • Moon, Go-Young;Rhim, Ji-Won
    • Macromolecular Research
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    • v.16 no.6
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    • pp.524-531
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    • 2008
  • The mitigation or elimination of methanol crossover for perfluorosulfonic acid fuel cell membranes has been investigated extensively for direct methanol fuel cell applications with the aim of increasing the electrochemical performance and enhancing the utilization rate of methanol. Self-assembly modifications by applying an oppositely charged polyelectrolyte to Nafion membranes were attempted in order to block or reduce methanol crossover while maintaining the other advantageous properties of Nafion membranes. It was reported that anionic polyallylamine hydrochloride (PAH) was the most efficient polyelectrolyte in reducing methanol crossover, and considerable cell performance was obtained even at a methanol feed concentration of 10 M.

Carbonylation of Bromo(Bromomethyl)Benzenes to Alkyl Carboalkoxyphenylacetates Catalyzed by Cobalt Carbonyl

  • Shim, Sang-Chul;Doh, Chil-Hoon;Lee, Dong-Yub;Youn, Young-Zoo;Lee, Seung-Yub;Chae, Shin-Ae;Oh, Dae-Hee;Oh, Hun-Seung
    • Bulletin of the Korean Chemical Society
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    • v.13 no.1
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    • pp.45-48
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    • 1992
  • A synthetic method for bis-carbonylation of bromo(bromomethyl)benzenes was described. Alkyl carboalkoxyphenylacetates were easily prepared by the carbonylation of benzylic and arylic bromide moieties in bromo(bromomethyl)benzenes with alcohols in the presence of $K_2CO_3,\;CH_3I$, and a catalytic amount of cobalt carbonyl under the atmospheric pressure of carbon monoxide at room temperature in good to excellent yields. The base played a decisive role in the selectivity of product and $K_2CO_3$ was the best one among bases used.

Investigation of soil factors on physiological disorder of vegetable crops in vinyl house II. lettuce, spring onion and red pepper (시설원예 작물의 생리장해유발 토양요인 규명 2. 고추 상치, 쪽파)

  • Choi, Byung-Ju;Lee, Chong-Ho;Park, Hoon
    • Korean Journal of Soil Science and Fertilizer
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    • v.24 no.2
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    • pp.152-157
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    • 1991
  • Growth status, plant nutrition and soil chemical properties were investigated for lettuce, spring onion and red pepper grown under vinyl house near Yesan. Low Ca and Mg with high K in soil resulted in Ca deficiency with slight Mg insufficiency in Korean lettuce. In this soil pH was low and EC was extremely low. Spring onion(Allium wakegi) can not emerge or showed poor growth(50%) due to high EC(above 0.5m mho/cm) and low pH (below 6.2). Red pepper plant showed wilt disease probably due to low soil pH.

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What is the Role of Co-coordinator?: From Internship's Experience

  • Onishi, Mai;Morimoto, Emi;Kamada, Mahito
    • Journal of Engineering Education Research
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    • v.15 no.5
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    • pp.42-46
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    • 2012
  • Graduate Students in engineering at The University of Tokushima can take part in an educational program which is offered long-term internship opportunities (at a company or the government). Onishi, one of authors, took part in this educational program. She is studying environmental conservation at the university and is interested in environmental conservation activities led by residents. Striking a balance between environmental conservation and human economic activities is seen as important to society. However, the continuing in environmental conservation activities is difficult. Therefore, collaborative activities attract attention as a way of the continuing in environmental conservation activities. A person called "co-coordinator" is a key to make many people to participate in the sustainable collaboration activities. The main role of co-coordinator is connecting people who are interested in environmental conservation activities. The purpose of joining in environmental conservation activities is different from person to person depending on where they belong to or where they live. Onishi took part in the educational program to learn the techniques of adjusting the differing interests. She did her internship at environmental consulting company in Kamikatsu town, Tokushima prefecture. She participated in several environmental conservation activities and work experience as a coordinator. Through this experience, she learned not only the technique but also the difficulty of the work. This paper reports the results obtained from her experience.

Home-based Physical Therapy Infrastructure and the Direction of Policy Development for Long Term Care Insurance in Community (노인장기요양보험제도 시행에 따른 지역사회 중심의 방문물리치료의 인프라 측면의 현황과 과제)

  • Yoon, Tae-Hyung;Kim, Yoon-Shin;Kim, Hee-Ra
    • Journal of Korean Physical Therapy Science
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    • v.15 no.2
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    • pp.61-69
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    • 2008
  • Background: This article reviewed the current status of home-based physical therapy infrastructure in long term care insurance and then solved the problem. Method: We used two forms of data that were acquired from ⅰ) the Ministry of Health & Welfare and the Family and National Health Insurance Corporation, ⅱ) a home-visiting health care program, and ⅲ) evaluation data from the Korea Health Industry Development Institute. The home-based physical therapy program was then analyzed. Results: The role and concept of home-based physical therapy was not clearly established. There were few home-based physical therapy programs in the community. The manpower of home-based physical therapists in the home-visiting health care program was very low. The role between home-visiting nurses (caregivers) and home-based physical therapists was mixed. Research and promotion regarding home-based physical therapy was poor. Conclusion: To establish a system of legal, long-term care insurance, we must increase the manpower of home-based physical therapists and the amount of research pertaining to the demand for home-based physical therapy.

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Survey of Peat Deposits in Skhalin Island (사할린도(島)의 PEAT 현황조사)

  • Lee, Y.H.
    • Korean Journal of Soil Science and Fertilizer
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    • v.27 no.4
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    • pp.315-320
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    • 1994
  • This survey report introduced briefly peat deposits in SAKHALIN island of eastern SIBERIA continent. Peat industry was promoted as leading resources for development in this island by national control economic plan of central government before CIS. But development of deposit was left suspension of operation due to investment now. In southern area, about 10km from Yuzunosakhalinsk, two deposits of peat field were explored. One of them (Troisk) was suspended at begining stage of peat harvest from 300ha field and the other(Missilop) was producing the compact peat through drying and pulverizing from 350ha peat field which showed long run harvest activities. There are plenty of peat deposits near the Polonai Reika (river) in the central area of this island, At Zbaikaritz, 40km nothern area from Polonaisk, 135ha of peat field was developed. This field was left without working but established field preparation and could be able to be harvested any time if machines and utlities were settled. At southern suburb 10km from Polonaisk, about 40ha field of virgin deposit has been established planning for development. The plan involved estimated amount of peat, deposit depth, water level, drainage and leading road. The most of peat deposits accumulated from sphagnum moss. Texture is coarse but it contains more than 95% of organic carbon near to 0.5% of total nitrogen and acidity showed pH4-5.

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Knowledge, Health Belief, and Self-efficacy Related to Osteoporosis (일개 신도시 지역의 골다공증 지식, 건강신념, 자기 효능감에 관한 연구)

  • Shin Su Jin;Shin Kyung Rim;Yi Hye Ryeon;Ju Su Kyung
    • Journal of Korean Academy of Nursing
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    • v.35 no.5
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    • pp.850-857
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    • 2005
  • Purpose: This research was conducted to examine the relationship of knowledge, health beliefs, and self-efficacy on osteoporosis. Method: The design of this study was a correlative design. The subjects were 1,615 Korean adults over the age of 20 registered in a new town and participants were asked to fill in a questionnaire developed by Kim, Horan & Gendler (1991), translated into Korean. Results: 1) The subjects recorded an average score of 1l.10 on osteoporosis knowledge. The average scores on the osteoporosis health beliefs was 15.68 for perceived susceptibility and the respondents recorded an average score of 40.40 for osteoporosis self-efficacy. 2) There were statistically significant differences in the degree of osteoporosis knowledge, self-efficacy and health belief according to gender, age, scholastic achievement, marital state, and jobs. 3) There were statistically significant positive correlations between osteoporosis knowledge and self-efficacy. Conclusion: According to these results, an osteoporosis education program improving not only knowledge but also self-efficacy and health beliefs should be developed and applied to decrease the perception of barriers to exercise and intake of calcium.

Relationship between Attitudes Toward Science and Science Achievement (과학에 대한 태도와 과학 성취도의 관계)

  • Lee, Mee-Kyeong;Kim, Kyung-Hee
    • Journal of The Korean Association For Science Education
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    • v.24 no.2
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    • pp.399-407
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    • 2004
  • The purposes of the study were to examine students' attitudes toward science and to investigate the relationship between attitudes toward and achievement in science. In order to achieve the purposes, the data collected from the National Assessment of Educational Achievement in 2001 were analyzed in this study. Approximately 1% of students within the entire population of the Grades 6, 9, 10 were randomly selected for the National Assessment of Educational Achievement in 2001. Students at all grade levels had slightly positive attitudes toward science. Positive attitudes toward science were higher at elementary level. Male students had more positive attitudes than female students and the difference in attitudes between male and female students was statistically significant. Also, there were significant differences in students' attitudes toward science among regions including Seoul, metropolitan city, small city and town. In addition, achievement in science was significantly and positively related to attitudes toward science, that is, the higher the students achieved, the more positive their attitudes toward science.