• Title/Summary/Keyword: green development

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Expansion Properties of Mortar Using Waste Glass and Industrial By-Products (폐유리와 산업부산물을 사용한 모르터의 팽창특성)

  • 박승범;이봉춘
    • Journal of the Korea Concrete Institute
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    • v.14 no.3
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    • pp.440-448
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    • 2002
  • Waste glass has been increased with the development of industry. The utilization of waste glass for concrete can cause the concrete to be cracked and to be weakened due to an expansion by alkali-silica reaction(ASR). In this study, ASR expansion and properties of strength were analyzed in terms of waste glass color(amber, emerald-green), industrial by-products(ground granulated blast-furnace slag, fly ash), and the content of industrial by-products for reducing ASR expansion caused by the waste glass. The possibility of using glass ground as pozzolanic properties was also analyzed. From the result of this study, the pessimum size of waste glass was 2.5∼1.2 mm regardless of waste glass color. And the smaller than 2.5∼1.2 mm waste glass is, the more decreasing expansion of ASR is. Also, the combination of waste glass with industrial by-products have an effect on reducing the expansion and strength loss caused by ASR between the alkali in the cement paste and the silica in the waste glass, and the glass ground of less than 0.075 mm is applicable as a pozzolanic material.

Bicycle Wear Survey Based a Study on the Development of the Commute for Bike Wear Textile Design (바이크복 현황조사를 기반으로 한 출.퇴근용 바이크복 텍스타일 디자인 개발에 관한 연구)

  • Lee, Youn-Soon;Eum, Ji-Eun
    • Journal of the Korea Fashion and Costume Design Association
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    • v.14 no.4
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    • pp.179-190
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    • 2012
  • During recent few years, Bike is arising as one of the most important item of sports market. As well as in domestic markets, customers are demanding specific brands only for young aged riders. Therefore, this study researched current bike wears and suggest digital textile printing with sports wear trends which also have safety and visual impact effectiveness, so it can be satisfied as green products and we also try to suggest sports sensitivity of existing cycle wear to city fashion. The purpose of this study is to figure out 20's-30's female biker attitude for bike wear and their purchasing habits and also their preference, digital textile design of city biker wear based on present condition research of riding wear markets and to establish high quality products with occupying high percentage of global markets and making high profits. For this study, bike wear distributors Survey First, foreign companies generally meet evenly sampling the 20s and 30s targeted vendors 10 companies were selected. 'city sporty ware' or 'casual line' dual 'extreme line' from all manufacturers, including, however did not distinguish it from all the vendors. This higher proportion of the recent upsurge in public and non-professional riders, despite the fact that you can see that the lack of 'Extreme line' compared to the 'casual' line of the city sporty ware production. overall seasonal sales in the spring appeared windbreak jacket, leggings and sweat emissions and at the same time built into the fabric dry faster T-shirt and shorts in the summer sales were higher. autumn jacket and produced excellent warm in winter fleece fabric T-shirts, pants, windshield jacket higher sales. showed improvements in design, improved in the order of the highest and perfect for everyday wear for both. As mentioned, we figure out 20's-30's female rider's attitude for riding suit and their purchasing habits and also their preference, so we can develop riding suit design based on their needs and suggest new design patterns.

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Analysis of the Current Wearing Status and Point of Improvement of Warning Clothing of Elementary School Students (초등학생의 도로교통 안전의복의 착용 현황 및 개선점 분석)

  • Park, Soon Ja;Lee, Eun Young
    • Human Ecology Research
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    • v.55 no.6
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    • pp.661-673
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    • 2017
  • This study analyzes the current wearing status and awareness of warning clothing for elementary school students as well as to identify points of improvement for traffic accident prevention and clothing safety education. A survey was conducted on 279 elementary $5^{th}$ and $6^{th}$ graders in the Incheon area and Ansan in 2017 June & July. The results showed that more than 2/3 of participants had no experience wearing warning clothing. Second, 63% of participants answered 'traffic accident prevention' as the main purpose of warning clothing, showing that about 2/3 are aware of the importance. Third, yellow was the most preferred color of fluorescent material for warning clothing with a significant difference of preference by grade. The favorite color combination of participants was yellow & orange followed by yellow & light green, but showed a significant difference between boys and girls. Fourth, the most preferred form of warning clothing was fluorescent short sleeves and shorts without reflective tape, suggesting that students paid more to the purpose for reflective tape. Fifth, while 68% of participants were negative towards wearing safety clothes that are currently available, 66% were willing to try safety clothes if the color and the design improved. The results suggest an improved education with more emphasis on the purpose of clothing safety. Color and design adjustment of the current warning clothing is also recommended for a more active participation by elementary school students.

Quaility Evaluation of Jellies Prepared with Refined Dietary Fiber from Ascidian (Halocynthia roretzi) Tunic (우렁쉥이 껍질로부터 정제된 섬유소 첨가 젤리의 품질평가)

  • 변명우;안현주;육홍선;이주운;김덕진
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.29 no.1
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    • pp.64-67
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    • 2000
  • Jellies enhancing physiological functions were prepared with using 5 and 10% dietary fiber isolated from ascidian (Halocynthia roretzi) tunic collected from recycled seafood waste. The texture development of the samples was examined with two-bite compression test and analyzed using five sorts ofrheological parameters with texture profile analysis as follows; hardness, adhesiveness, springiness, cohesiveness and gumminess. All the rheological parameters decreased in the fiber enhanced jellies. However, the springiness and cohesiveness increased slightly in the fiber enhanced jellis. Hunter L' and d' values increased in the fiber enhanced jellies and accordingly the color was light yellow. a' value showed green with the addition of fiber. As a result of sensory evaluations, the color and overall acceptability of 10% fiber enhanced jelly were significantly different at p<0.05. The 10% fiber enhanced jelly was noted as having high sensory scores and peferable acceptability.

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Seeing the State-nature Relation in South Korea from the Perspective of Political Ecology (한국의 국가와 자연의 관계에 대한 정치생태학적 연구를 위한 시론)

  • Hwang, Jin-Tae;Park, Bae-Gyoon
    • Journal of the Korean Geographical Society
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    • v.48 no.3
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    • pp.348-365
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    • 2013
  • This paper aims to examine the complexities of the state-nature relations in Korea by emphasizing the complex processes of interactions between the state and nature. In doing so, it relies on the literature of "political ecology of state-nature" which problematizes the conventional modernist views on nature assuming the dualistic separation between the state and nature. First, we critically review the existing Korean literature on the state-nature relation (e.g., the ecologism, the metabolic rift theory, the social construction of the nature, the green state thesis, etc.) and argue that these studies significantly lack the recognition of the interactions between the state and nature. Second, we discuss the possibilities of seeing the state-nature relations from the perspective of political ecology as an alternative approach to the state-nature relation. Last, we conclude that the political ecology approach to the state-nature can deepen our understandings of the Korean capitalist development.

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A Study on the Environment-Friendliness Evaluation of Sangsang Children's Park in Korea (국내 상상 어린이 공원의 친환경성 평가 연구)

  • Kim, Ja Kyung
    • Korean Institute of Interior Design Journal
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    • v.23 no.4
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    • pp.169-180
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    • 2014
  • Since Seoul city supplied 'Sangsang Children's Park', domestic children's parks are changing from formal facilities to creative play space recently. From eco-friendly safe playground model development project, the awareness of eco-friendly playground, namely children's park is increasing and its necessity is magnified. However, we could not know how well most children's parks aimed at the eco-friendly playground reflect eco-friendly features and whether they are eco-friendly or not because there are not the specific planning guidelines and evaluation standards for making the eco-friendly playground or children's park. Therefore, in this study we established the environment-friendliness evaluation standards of children's parks and estimated the environment-friendly features of the 9 parks built on the subject of green among Sangsang Children's Parks. In the observational survey of the 9 parks, we evaluated the environment-friendliness of these parks in the 8 fields(location and placement, ecological environment, play space, play equipment and facilities, additional facilities, materials and resources, energy saving, environmental load reduction) according to the levels(suitable, partial reflection, unsuitable, non-reflection) of reflection of eco-friendly planning factors. The assessment results showed that 4 items (location and placement, additional facilities, play space, play equipment and facilities) were suitable and others (energy saving, environmental load reduction, ecological environment, materials and resources) were partial reflection or unsuitable. Therefore, on the basis of these results, this study proposed the planning indicators to be considered first and the planning factors that should be complemented and improved in the construction of eco-friendly children's park in future.

Investigating the Relationship of Sustainability Factors with Project Management Success

  • Khalilzadeh, Mohammad;Akbari, Hassan;Foroughi, Amin
    • Industrial Engineering and Management Systems
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    • v.15 no.4
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    • pp.345-353
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    • 2016
  • One of the main concerns of the present age, is attending to the issue of sustainability that in recent decades, the concept of it has grown in terms of recognition and importance. Sustainability have defined further the development of the welfare and living standards of the present generation, without the lives of future generations is at stake. One of these tasks of the business is project management and today, "green or sustainable project management" as one of the most important global trends of project management have been identified. The issue of present study was to investigate the relationship of sustainability factors with success of a project. The population of the research consists of directors of oil and gas in the South Pars region including 150 people that according to Cochran formula, the number of samples were obtained 108 people. In this study, data collection was conducted based on a structured questionnaire that from a sample set of questions was used for sustainability impact on 6 scale of project management success. For this purpose, the whole five-item Likert has been used. Also for statistical analysis, PLS software was used. The results of path analysis at confidence level of 95%, showed a significant relationship exists between "sustainability factor" and "project success criteria." Since the correlation coefficient is positive, so this type of relationship is positive. Thus all the hypotheses at confidence level of 95 percent was confirmed and it became clear that there is a significant positive relationship between "sustainability factors" and "project success criteria."

Production of Recombinant Protein, Human Stem Cell Factor, Using Insect Cell Line

  • Park, Sang-Mi;Kwon, Ki-Sang;Goo, Tae-Won;Yun, Eun-Young;Kang, Seok-Woo;Kim, Sung-Wan;Yu, Kweon;Kwon, O-Yu
    • Biomedical Science Letters
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    • v.15 no.1
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    • pp.37-45
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    • 2009
  • Insect cell cultures have become important tools in the production of biological substances for use in a variety of research, human and veterinary medicine, and pest control applications. These applications often require the introduction of foreign DNA into the cells and have generally used methods originally developed for use with human and other mammalian cell cultures. While these methods can be successfully employed, they are often less efficient with insect cells and frequently involve complex procedures or require specialized equipment. Even when they do work, they may require substantial modification because of differences in the culture medium or growth patterns of insect cells. In this study, We have optimized transfection conditions of Sf9 cell line using insect expression vector pIZT/V5-His which expresses green fluorescent protein effectively. Human stem cell factor (hSCF) is a glycoprotein that plays a key role in hematopoiesis acting both as a positive and negative regulator, often in synergy with other cytokines. It also plays a key role in mast cell development, gametogenesis, and melanogenesis. It can exist in membrane-bound form and in proteolytically released soluble form. As determined by an enzyme-linked immunosorbent assay performed, hSCF level in supernatant averaged 995ng/ml. The human hSCF was partially purified by immunoaffinity chromatography and analyzed with sodium dodecyl sulfate-polyacrylamide gel electrophoresis and immunoblotting. The results show that the hSCF has N-linked carbohydrate and corresponds to the soluble form, at or about 223 amino acids in length. The findings suggest functional importance for soluble hSCF in cells.

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Dyeing Property of Bamboo Leaves Extract on Hemp and Ramie Fiber (대나무잎 추출물에 의한 삼베와 모시섬유의 염색성)

  • Min, Kyung-Hae
    • Fashion & Textile Research Journal
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    • v.13 no.3
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    • pp.438-444
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    • 2011
  • Bamboo leaves, as natural dye provide unartificial fresh green, are known for expert property at anti-bacterial, anti-aging, anti-oxidation, skin whitening, moisturizing, peeling of horny, deodorizing and some skin disease like as eczema and inflammation without any allergic response. Also, It is quite common to obtain bamboo leaves from our surrounding but most of them were not in use. On purpose of development the way of recycle with common material to dye, bamboo leaves were used to dye on ramie fiber which is valuable for both of apparel and industrial field and investigated their dyeing property. Using extract from bamboo leaves, dyeing property was examined with dyeability, colorimetric property, light fastness and wash fastness under different conditions by extract density, dyeing time, dyeing method and mordants. As results, dyeing was generally colored in yellowish, K/S Value was shown more higher on hemp fiber than ramie. The most optimum dyeing condition was investigated on pre-mordant treatment, dyeing temperature $60^{\circ}C$, dyeing time 30min and extract density 400%. On the treatment with mordant(Al, Fe, Cu), dyebility on both of hemp and ramie fiber were increased by mordant. Especially with Copper(Cu) as mordant, dyebility was highly increased than any other mordants and dyeings showed in deep color. Also on the fastness test which is the most important to natural dyeing, wash-fastness showed good performance with 4-5 grade but light-fastness was above 4 grade on both of hemp and ramie fiber, lower than wash-fastness overall.

Market Trend of Health Functional Food and the Prospect of Ginseng Market (건강기능식품의 시장현황 및 인삼시장의 전망)

  • Lee, Jong-Won;Do, Jae-Ho
    • Journal of Ginseng Research
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    • v.29 no.4
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    • pp.206-214
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    • 2005
  • The health function food law has been carried into effect from January 31, 2004 just after the proposal of 'a draft of a proposed law concerning the health function foods for the promotion of a nation health' on November 29, 2000 in Korea. After enforcement of health functional food law, there have been difficult market penetration with overall stagnancy of business activities and the current of health functional food within the country divided two groups. In standardized health functional foods the present condition, nutrition supplementary products (938 items) and red ginseng products (351 items) are prevalent and total 32 products are registered containing lactobacilli (297 items), glucosamine (295 items), ginseng (182 items), yeast(136 items) so on. In 2005, five products (products containing green tea extract, soybean protein, plant sterol, fructooligo sugar and Monascus sp. products are newly notified and raw material or component of total 21 products containing xylitol, teanin extract, sardine peptide are recognized as individual authorized health functional foods. Efficacies of ginseng are studied in many-sided researches but benefits of the ginseng in the health functional food law limited to 3 items (staminaresume, immune enhancement, nourishment robustness). To enlarge functionalities of ginseng it needs raw material and ingredient approval through data application to Korea Food and Drug Administration and this procedure acts as barrier of the functional food development in the ginseng industry. It is necessary to develop the authorized health functional foods for leading health functional food market in the future.