• Title/Summary/Keyword: Environmental Right

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Development of Steam Plasma-Enhanced Coal Gasifier and Future Plan for Poly-Generation

  • Hong, Yong-Cheol;Lho, Taihyeop;Lee, Bong-Ju;Uhm, Han-Sup
    • Journal of Surface Science and Engineering
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    • v.42 no.3
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    • pp.139-144
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    • 2009
  • A microwave plasma torch at the atmospheric pressure by making use of magnetrons operated at the 2.45 GHz and used in a home microwave oven has been developed. This electrodeless torch can be used to various areas, including industrial, environmental and military applications. Although the microwave plasma torch has many applications, we in the present work focused on the microwave plasma torch operated in pure steam and several applications, which may be used in future and right now. For example, a high-temperature steam microwave plasma torch may have a potential application of the hydrocarbon fuel reforming at one atmospheric pressure. Moreover, the radicals including hydrogen, oxygen and hydroxide molecules are abundantly available in the steam torch, dramatically enhancing the reaction speed. Also, the microwave plasma torch can be used as a high-temperature, large-volume plasma burner by injecting hydrocarbon fuels in gas, liquid, and solid into the plasma flame. Finally, we briefly report treatment of soils contaminated with oils, volatile organic compounds, heavy metals, etc., which is an underway research in our group.

A Prospect of Explosives Demolition Based on Comparative Analysis of Demolition Cost. (해체공사비 비교분석을 통한 발파해체 공법의 전망)

  • Cho Tae-Wan
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.4 s.20
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    • pp.130-138
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    • 2004
  • The demolition works of high building in korea are expecting to increase rapidly in the near future, and its general demolition methods can be divided into mechanical demolition method and explosive demolition method. The selection of the right demolition method relies on many variable elements according to environmental and geographical elements. But, generally, the most important element of those is a economical profit. Accordingly, This study estimates each demolition cost dividing into mechanical demolition method and explosive demolition method of high building in city. And the estimating of the demolition cost makes it possible to do comparative analysis for the economical efficiency of each method more objectively than any other selective elements. Also, the analysis for the economical efficiency helps to forecast the activated time of the explosive demolition method in domestic.

Development of Multi-function Disinfection Sterilizer (다기능 방역 소독기 개발)

  • Cho, Hyeon-Seob;Park, Jong-Sun;Lee, Kwang-Ryon;Ryu, In-Ho;Jeong, Young-Seok;Kim, Dae-Sung
    • Proceedings of the KIEE Conference
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    • 2002.07d
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    • pp.2495-2496
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    • 2002
  • Most of existing disinfection sterilizer had used mist method that burn chemicals and dust with them by putting chemicals in the course of explosion using gasoline. But, that method is not used because of environmental pollution, and spray method using a high-pressure pump is used in an advanced country. These method is very effective than existing mist method because the effect of chemicals can be appeared as it is when spray chemicals. This research will develop completely automatic multi-function disinfection sterilizer in the first at home that can be liberally used by oneself in order to alternate existing products need addition manpower and can be easily used at a place where sources of electricity is not by using gasoline engine to solve inconvenience by the use of electricity, and can be literally operated above and below, right and left in a driver's seat when is loaded in vehicles.

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Solution verification procedures for modeling and simulation of fully coupled porous media: static and dynamic behavior

  • Tasiopoulou, Panagiota;Taiebat, Mahdi;Tafazzoli, Nima;Jeremic, Boris
    • Coupled systems mechanics
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    • v.4 no.1
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    • pp.67-98
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    • 2015
  • Numerical prediction of dynamic behavior of fully coupled saturated porous media is of great importance in many engineering problems. Specifically, static and dynamic response of soils - porous media with pores filled with fluid, such as air, water, etc. - can only be modeled properly using fully coupled approaches. Modeling and simulation of static and dynamic behavior of soils require significant Verification and Validation (V&V) procedures in order to build credibility and increase confidence in numerical results. By definition, Verification is essentially a mathematics issue and it provides evidence that the model is solved correctly, while Validation, being a physics issue, provides evidence that the right model is solved. This paper focuses on Verification procedure for fully coupled modeling and simulation of porous media. Therefore, a complete Solution Verification suite has been developed consisting of analytical solutions for both static and dynamic problems of porous media, in time domain. Verification for fully coupled modeling and simulation of porous media has been performed through comparison of the numerical solutions with the analytical ones. Modeling and simulation is based on the so called, u-p-U formulation. Of particular interest are numerical dispersion effects which determine the level of numerical accuracy. These effects are investigated in detail, in an effort to suggest a compromise between numerical error and computational cost.

A Study on the Location and Spatial Organization in YeonSan DonAm SeoWon (연산(連山) 돈암서원(遯岩書院)의 입지(立地)와 공간구성(空間構成)에 관한 연구)

  • Choi, Jong-Hee;Moon, Chang-Soon
    • The Journal of Natural Sciences
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    • v.19 no.1
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    • pp.95-111
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    • 2008
  • This paper aims to discussion the characteristics of location and spatial organization on the Donam SeoWon(confucian academy). To do this, we studied in analysis of the present conditions and photographing, research materials about the from of physical structure and review of historical documents. The result of analysis in the sight of the location and spatial organization was good matched. The spatial organization of the Donam SeoWon(confucian academy) was divided into entry space, lecturing space, management space and sacrificial space. Jonhakhumyo constructs axis of “Sanangru - Ipdeokmun - Yangseongdang - Naesammun - Sungryesa” and Eungdodang that not removed hall with 1880 shows characteristics a right angle in the left side of axis remove to location of present 1971. The result of this study, analysis of axis and Spatial structure shows backgrounds of these locations shows that the political and social, economical phenomena were influenced to the locations and spatial organization of the Donam SeoWon(confucian academy).

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A Concept Analysis of the Quality of Life for the Children (아동의 삶의 질에 대한 개념 분석)

  • Chang, Eun-Young;Oh, Jin-A
    • Korean Parent-Child Health Journal
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    • v.11 no.2
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    • pp.127-137
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    • 2008
  • Purpose: The purpose of this study was to attempt an accurate understanding of the quality of life for the children and provide basic materials for application to nursing research, intervention and further theoretical development. Method: Data obtained from such research methods as the lexical and literature review were analysed according to Walker and Avant's(1995) process of concept analysis. Results: As a result of analysis, it was found that the attributes of the concept of the quality of life for the children included value/acceptance, family relationship, safety, good relationship with friends, right of children, school life, parent relationship, leisure, economical stability, not child abuse, and health. There was the coexistence between antecedent element and the outcomes of subjective judgement - health, family, economic strength, education, friends, welfare, social-cultural environment which indicates the coexistence of positive and negative emotions. Conclusion: nursing intervention should be provided for children by concentrating focus on the coordination of internal and external situations in order to prompt them to express their life with positive emotions. Experiential reference was used to suit the purpose of this study based on the use of objective and subjective indicators, and the development of the instrument considering the children were proposed because of the absence of the unified measurement instrument.

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The Role of Intellectual Property Rights for Conserving Biological Diversity - Patent Law Treaty for Protecting Genetic Resources and Traditional Knowledge - (생물다양성보전을 위한 지적재산권의 역할 연구 - 유전자원과 전통지식 보호를 위한 특허법의 역할 중심으로 -)

  • Kang, Gil-Mo;Yeom, Jae-Ho;Doh, Seong-Jae;Lee, C. Mi-Jin;Kwon, Suk-Jae
    • Ocean and Polar Research
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    • v.29 no.1
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    • pp.43-53
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    • 2007
  • Recently, controversy over intellectual property rights for protecting genetic resources and traditional knowledge has been emerging. Very active debates and global discussions are being carried out in various international organizations for possible approaches to be taken for these properties, and for the fair and equal sharing of the benefits from these intellectual properties. There is a need to evaluate adopting a sui generis system which is being pushed by developing nations, or adopting a policy which will guaranteee benefit sharing such as sharing royalties from marketing final products, technical transfers, capacity building, and participating in research activities. Also, it is very important to examine the legal issues concerning genetic resources based on Convention on Biological Diversity for the fair and equal sharing of the benefits with developing nations, at the same time assuring developed nations of access to genetic resources.

Screening of Yeast Diauxic Promoters for Production of Foreign Proteins

  • Kim Jin-Ju;Kim Sang-Woo;Jeon Che-Ok;Yun Ji-Yun;Lee Hyun-Sook;Ro Hyeon-Su
    • Journal of Microbiology and Biotechnology
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    • v.16 no.9
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    • pp.1459-1463
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    • 2006
  • This study explored yeast diauxic promoters using a green fluorescent protein (GFP) reporter to screen growth phase-controlled promoters applicable for foreign protein production. Twenty-five diauxic promoters were inserted into a yeast 2-micron vector in front of the reporter GFP gene. The expressed GFP signal intensity measurements showed that 23 out of the 25 promoters produced a significant fluorescent signal when the cells were in the diauxic growth phase. Among the two strongest promoters pYDL204W and pYLR258W, the former remained constantly active after its activation at the diauxic shift, whereas the latter was only transiently activated right after the deprivation of the medium glucose.

Estimation of Chloride Corrosion Threshold Value in Concrete by Using Electrochemical and Cyclic Wet and Dry Seawater Method (전기화학적 및 해수 건습반복 방법에 의한 콘크리트 내의 임계 염화물량 평가)

  • Bae Su Ho;Lee Kwang Myong;Chung Young Soo;Kim Jee Sang
    • Proceedings of the Korea Concrete Institute Conference
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    • 2005.05b
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    • pp.245-248
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    • 2005
  • It should be noted that the critical chloride threshold level is not considered to be a unique value for all conditions. This value is dependent on concrete mixture proportions, cement type and constituents, presence of admixtures, environmental factors, steel reinforcement surface. conditions, and other factors. In this study, the accelerated corrosion test for reinforcing steel was conducted by electrochemical and cyclic wet and dry seawater method, respectively and during the test, corrosion monitoring by half cell potential method was carried out to estimate the chloride corrosion threshold value when corrosion for reinforcing steel in concrete was perceived. For this purpose, lollypop and right hexahedron test specimens were made for 31.4$\%$, 41.5$\%$ and 49.7$\%$ of w/c, respectively and then the accelerated corrosion test for reinforcing steel was executed. It was observed from the test that the time to initiation of corrosion was found to be different with water-cement ratio and accelerated corrosion test method, respectively and the chloride corrosion threshold value was found to range from 0.91 to 1.43 kg/$m^{3}$.

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Environmental Hazardous Assessment on Wood Panel Manufacturing Process (목재판넬 제조공정의 환경위험성평가)

  • Lee, Su-Gil;Lee, Nae-Woo
    • Journal of the Korean Society of Safety
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    • v.22 no.3 s.81
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    • pp.13-21
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    • 2007
  • Personal and static sampling for formaldehyde, wood dust and noise monitoring, in accordance to the equipment running on the day, were carried out throughout wood panel manufacturing process. Even though the exposure level of formaldehyde and wood dust were below than exposure criteria, but the personal protective equipment(PPE) for those should be worn to everyone in the process because of its potential characteristics like carcinogenicity. Also a few local air extraction system above the cutting, grinding sections and organic blending room should be required. Most of the exposures of noise exposure were exceeded permitted exposure criteria, in case of Hopper operators, exposed to maximally 94dB(A) as LAeq 8hr, therefore active controls like PPE, monitoring, isolation etc. are necessary. The main sources of noise were caused on compressed air of the machinery, radio sound and operation noise like running machines, conveying, cutting, sawing, moving vehicles, storing and so on. For the comparison of control criteria in each country, the permitted exposure standards for above hazardous materials and noise in Korea, ACGIH and Australia were discussed. We have recognized that the Korean criteria should be discussed urgently to give the right information to employee and modified, if it is necessary.