• Title/Summary/Keyword: Environmental problems

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Research and Development Trends in Milk Products (우유 및 유제품의 기술개발 동향)

  • In, Yeong-Min;Jeong, Seok-Geun;Ham, Jun-Sang;Kim, Dong-Un;Kim, Gyeong-Nam
    • Journal of Dairy Science and Biotechnology
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    • v.18 no.1
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    • pp.22-37
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    • 2000
  • In spite of adverse circumstances, dairy food industry of Korea has been developed continuously with the every efforts of farmers, processors, researchers and government officers. Development and extension of new technology, such as safety assurance, improvement of nutritive ingredient, and keeping freshness are very important issues considering short shelf life of dairy products which are prevalent in Korea. In addition to, demands for advanced technology would be increased rapidly with the increase of consumption development of high quality products supply structure, decrease of production basis, and appearance of environmental problems. And demands for information about standard would be enlarged. Development of new products and technology for quality improvement should be evolved with the application of developed technology and cooperation of relative institutes in order to enlarge the consumption of milk and dairy products. In conclusion, efficient production on the basis of balance and development of dairy products which are safe and high quality are the most important subjects for the development of dairy industry in Korea.

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A Practical New Technology of Removing Algal Bloom: K-water GATe Water Combine (조류(藻類)제어를 위한 실용적 신기술 : K-water 녹조수상콤바인)

  • Shin, Jae-Ki;Kim, Hojoon;Kim, Sea Won;Chong, Sun-A;Moon, Byong Cheun;Lee, Sanghyup;Choi, Jae Woo
    • Korean Journal of Ecology and Environment
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    • v.47 no.3
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    • pp.214-218
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    • 2014
  • We introduce a technical equipment of GATe (Green (algae)-tide) water combine developed by K-water. The GATe water combine consists of five modules: main body and buoyant, transfer hopper, screen conveyer, sludge remover, and separator of algae and waste. Also a sprinkler, as the pre-treatment step if necessary, is equipped to the device to spread out environmental-friendly algaecide under the circumstance that the level of algal bloom does not reach to the scum-forming condition. The overall module system of this device is very simple. Based on the field test, the device covers surface area of ca. $500,000m^2day^{-1}$ during the period from May to July, and treats water volume as much as $500,000m^3day^{-1}$ in spite of some variation depending on the water quality condition. The removal efficiency of the device appeared to be over 90%. In addition, the operating duration of the device was able to expand to cover the period between March and November. We expect this new technology can be used to solve algal bloom problems in drinking water resource and public water area.

Electrochemical Properties of Needle Coke through a Simple Carbon Coating Process for Lithium Ion Battery (침상 코크스의 피치 코팅에 따른 리튬 이차전지 탄소계 음극소재의 전기화학적 특성)

  • Hwang, Jin Ung;Lee, Jong Dae;Im, Ji Sun
    • Applied Chemistry for Engineering
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    • v.31 no.5
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    • pp.514-519
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    • 2020
  • Graphite materials for lithium ion battery anode materials are the most commercially available due to their structural stability and low price. Recently, research efforts have been conducted on carbon coatings by improving side reactions at the edge site of carbon materials. The carbon coating process has classified into a CVD by chemical reaction, wet coating process with solvent and dry coating by mechanical impact. In this paper, the rapid crush/coating process was used to solve the problem of which only few parts of the carbon precursor (pitch) can be used and also environmental problems caused by solvent removal in the wet coating process. When the ratio of needle coke to pitch was 8 : 2 wt%, and the rapid crush/coating process was carried out, it was confirmed that the fracture surface was coated by pitch. The pitch-coated sample was treated at 2400 ℃ and 41.8% improvement in 10C/0.1C rate characteristic was observed. It is considered that the material simply manufactured through the simple crush/coating process can be used as an anode electrode material for a lithium ion battery.

A Study on the Implementation of Eco-friendly Green IT-based Libraries (그린 IT기반 도서관의 친환경성 구현에 관한 연구)

  • Noh, Younghee
    • Journal of the Korean Society for Library and Information Science
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    • v.54 no.2
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    • pp.5-28
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    • 2020
  • This study was conducted to discuss concrete ways to contribute to the sustainability of the planet by actively applying and using digital and IT resources in libraries. To this end, a survey was conducted for librarians of public libraries, and the results were as follows. First, librarians' awareness of the seriousness of environmental problems and the degree of eco-friendly activities were very high, but their awareness of library green IT and familiarity with eco-related terms were very low. Nevertheless, there was a high degree of agreement on the importance of applying green IT to libraries. Second, the areas evaluated as having the highest contribution to eco-friendliness and greening of the library were found in the equipment and product operation area, followed by the service area and the network and system area. Third, how do you think library green IT will have a social impact? The highest opinion was given that it could increase the awareness of the library's social responsibility as a social infrastructure. In conclusion, it seems that the library's green IT can contribute to improving library perception by making the public perceived as an institution that has a social responsibility as a social infrastructure.

A Study of Standardization for Establishing Integrated Infrastructure of Underground Space Information and its Availability (지하공간정보 통합 인프라 구축을 위한 표준화방안 및 활용성에 관한 연구)

  • Seok, Cheol Ho;Kang, Yu Ra;Jang, Yong Gu;Kang, In Joon
    • Journal of Korean Society for Geospatial Information Science
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    • v.20 no.4
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    • pp.105-115
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    • 2012
  • Today, the domestic construction area has changed from the ground development area to the underground space development area. In addition, the problems of sprawling development and environmental pollution in the process of developing underground space have become significant. In the circumstances, it is expected that the use of underground space information, which helps to understand underground space, will be on the sharp rise. However, the underground information in Korea is separately established and managed by each institution, and it is difficult to use the information in an integrated way. Therefore, at the time when the information on underground space is integrated, it is required to perform the integrated DB standardization in order to establish the integrated infrastructure of underground space information. In this work, this researcher studied a plan of using the standardization of the integrated infrastructure of underground space information. As a result, this work suggested standardization of each geologic stratum, standardization of unit systems, and standardization of the connection of underground space information regarding the standardization contents of underground space information integration. To examine its availability, this researcher conducted a questionnaire survey with experts of each institution. As a result, the suggested plan was found to be have high availability.

The Effect of Environment-friendly Consumption Consciousness, Consumption Behavior and Consumption Value of Adolescents on Attitude of School Uniform Recycling (청소년의 친환경 소비의식, 소비행동, 소비가치가 교복 재활용 태도에 미치는 영향)

  • Lee, Jung Woo;Kim, Jiyun;Park, Su Hee;Suh, Kyung Hwa;Shin, Yeoul;Ahn, Jee Hyun;Yang, Heesoon
    • Journal of Korean Home Economics Education Association
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    • v.26 no.2
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    • pp.1-14
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    • 2014
  • School uniform recycling has gained increasing attention as one of the solutions for environmental problems and improvement of home economics. The aim of this study is to investigate the effect of environment-friendly consumption consciousness, consumption behavior, and consumption value on attitude of school uniform recycling in adolescents. Using self-completion questionnaire, environment-friendly consumption consciousness, consumption behavior, and consumption value were examined in 426 middle- and high school female students in Seoul and Gyeonggi province. The results are as follows; first, although more than 60% students showed positive attitude for purchasing recycled school uniform, respondents have rarely been purchasing recycled school uniform. Second, environment-friendly consumption consciousness, consumption behavior, and consumption value of students had the significant effect on the attitude of school uniform recycling. Our results suggest that more efforts should be focused on the education of environment-friendly consumption consciousness and consumption behavior.

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Analysis of Bar in Coil's Application to Rebar Work (철근공사의 코일철근(Bar in Coil) 적용타당성 분석)

  • Lee, Hyun-Soo;Kim, Jae-Gon;Park, Moon-Seo;Kim, Hyun-Soo;Hwang, Sung-Joo
    • Korean Journal of Construction Engineering and Management
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    • v.13 no.1
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    • pp.106-117
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    • 2012
  • The proportion of rebar factory manufacturing which has been settled down in Korea recently seems to increase because of their strength such as high decreasing rate of rebar loss and manufacturing accuracy and the external factors such as an increase of downtown projects and a decrease of skilled workers. However, factory manufacturing using straight rebars causes a certain amount of rebar loss and an environmental problem including $CO_2$ emissions. To solve these problems, Bar in coil (BIC) has been introduced; however its application is very rare because it has not been produced so far in Korea and manufacturing machines of BIC are very expensive. Also, although BIC's application is expected to expand due to its strengths, few analysis of its application has been conducted. Therefore in this study, analysis of the BIC's characteristics and the influence to the rebar manufacturing industry are conducted for the advancement of rebar work as a basic research. To achieve this, inquiry on the present condition of rebar manufacturing industry in Korea is implemented. Then, the validation of BIC's applications by aspects of industry and the analysis of stakeholders' economical profit and loss are conducted.

A Model for Evaluating Eco-friendly Demolition Works for Remodeling in the Pre-construction Stage (친환경 리모델링 철거공사 수행을 위한 사전검토 모델 개발)

  • Chae, Seong-Hyun;Kim, Kyung-Rai;Shin, Dong-Woo;Cha, Hee-Sung
    • Korean Journal of Construction Engineering and Management
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    • v.13 no.1
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    • pp.14-23
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    • 2012
  • Due to the increase of aged housing demolition in preparation for the rapid growth of the market, Eco-friendly remodeling demolition work which can minimize environmental destruction have been studied. However, the owner or contractor to apply for eco-friendly remodeling demolition work does not reflect the characteristics of the site can not have a potential for many variables. In addition, There is no standard which can find effective part and catch a problem by performing eco-friendly remodeling demolition. Therefore, the project owner and construction company executives in the Pre-construction stage to the implementation of eco-friendly remodeling demolition construction by providing a model for the pre-evaluating the project. In this paper, the performance of eco-friendly remodeling of demolitions is proposed for the pre-evaluating model. After the eight items were drawn affecting the performances which are influence to accomplishment of the eco-friendly remodeling demolition, evaluation criteria was suggested for each item. Also By classifying and assessing the evaluation items, It will be able to identify the problems and supplements for eco-friendly remodeling demolition. Through the final evaluation sheet, The works of the appropriacy and supplement will be checked for the eco-friendly remodeling demolition. Finally The preinvestigation model is helpful for making the plan of systematic demolition, futhermore It is contribute to the expansion of the eco-friendly remodeling demolition.

Availability Evaluation System for Remodeling of Existing Apartment Houses (기존 공동주택의 리모델링 용이성 평가 체계)

  • Cha, Woo-Cul;Lim, Byung-Wook;Shin, Chang-Hyun;Shin, Byung-Hyun;Lee, Jea-Sauk;Chun, Jae-Youl
    • Korean Journal of Construction Engineering and Management
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    • v.9 no.5
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    • pp.204-213
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    • 2008
  • Apartments production without a previous example is existed by suddenly rapid growth of population and city. So this mass producted aged Apartments have many problems that is aged and staleness. Confrontation of obsolete and staleness is Build&Scrap and Remodeling. But Remodeling is much better than Build&Scrap Because Remodeling has Social, Economical, Environmental merits. This Research is Feasibility Evaluation System on an object of Remodeling. Feasibility Evaluation means Possibility on Objective action on aiming action in other words. It means degree of difficulty about purpose to act. Remodeling is based on existing apartment, to improve ability and performance of existed aged Apartment and by engineering technique and method. A point of view, development of Remodeling technique and popularization is necessary as well as Remodeling Plan and Construction technique of applied Existing building logical Approach is that. The purpose of this paper is handling allowance range of Remodeling Plan and Achievement accomplishment Feasibility Evaluation of purpose and objective and Understanding. Remodeling Feasibility is evaluated by two aspects. The first is Macro Level Approach of Remodeling Feasibility Evaluation on a Apartment Complex, and The second is Micro Level Approach of Remodeling Feasibility on each housing part is evaluated about removal and dismantlement.

Type and Contents of Health Records and Recording Tendencies of Nurses in Small-Scale-Enterprises (소규모 사업장 보건관리 산업간호사의 업무서식과 기록행태)

  • Yoo, Kyung-Hae;Kang, Eun-Hong;Cha, Nam-Hyun
    • Korean Journal of Occupational Health Nursing
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    • v.10 no.1
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    • pp.74-92
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    • 2001
  • This study was carried out to investigate the types of health documents for nurses, the content of informations in the documents, and writing behaviors of occupational health nurses. Health documents were collected from 7 nurses who were working in 7 group occupational health agencies (GOHA) located at Seoul and Inchon area in Korea. The collected health documents written in January to June 1999 were analyzed, and revealed the following results. 1) The occupational health nurses were using 9 to 18 different types of health documents. The contents of the documents were considered quite similar to each other with slightly different headings and items to record. Among different types of health documents. Health Management Card for Workplace', Nursing performance sheet and Workplace environmental checklist were in common among nurses and were used for content analysis. 2) The 'Health Management Card for Workplace' was the only formal sheet of small-scale-enterprises (SSE) for health management, in which health and safety related information was recorded. The information on nursing services were recorded on the Nursing performance sheet, which has slightly different names on each type with similar contents. The Workplace environment checklist was for the information on general work environment management and mainly status of workplace hygiene. This checklist is to be used by or with nurses among the 3 types health professional team such as doctor, hygienist, and nurse, but it seemed not being used frequently by nurses. 3) Analysis on recording tendencies of nurses revealed that the writing styles of occupational health nurses were associated with 'memo' using a few number of words and short sentences. The amount of information by this kind of recording style was considered not enough for health management situation. The possible reasons for nurses to use this writing style might be insufficient time for recording and improper designed format of health documents. Because nurses working in SSE spend more time on the roads to visit workplaces, nurses may not found enough time for recording properly within their working time. In addition, the health records were designed to focus on the frequency of nurse's performance in certain types of work rather than on the method they used to deal with health problems. In conclusion, this study suggests that some steps are necessary to develop health documents and recording system which is appropriate to occupational health nurses. The educational need for nurses on appropriate recording behavior is also recommended.

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