• Journal of Institute of Convergence Technology
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• 제3권2호
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• pp.1-6
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• 2013

The ionic liquids are known to potential alternative solvents capable of replacing the commercial solvents in various processes including those in nuclear fuel cycle. As to the material, a number of studies have already reviewed the interesting results and addressed the spectroscopic as well as electrochemical behaviors of metal elements included in spent nuclear fuels. It has found that the important properties of metal ions in TBP dissolved ILs have led the development of alternative technologies to traditional solvent extraction processes. On the other hand, the electrochemical deposition of metal ions in ILs have been investigated for the application of the solvents to aqueous as well as to non-aqueous processes. In this work, a review on the application of ILs in nuclear fuel cycle is briefly presented to understand the notable researches on ILs focusing on aqueous processes.

• Journal of Korean Society on Water Environment
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• 제35권1호
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• pp.64-71
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• 2019

In recent years, carbon dioxide ($CO_2$) bubbles emerged as the most widely applied material with the recycling of sequestrated storage to decrease global warming. Flotation using $CO_2$ as an alternative to air could be effective in overcoming the high power consumption in the dissolved air flotation (DAF) process. The comparison of DAF and DCF system indicated that, the carbon dioxide flotation (DCF) system with pressurized $CO_2$ only requires 1.5 ~ 2.0 atm, while the DAF system requires 3.0 ~ 6.0 atm. In a bid to understand the characteristics of particle separation, the single collector collision (SCC) model was used and a series of simulations were conducted to compare the differences of collision and flotation between $CO_2$ bubbles and air bubbles. In addition, laboratory experiments were sequentially done to verify the simulation results of the SCC model. Based on the simulation results, surfactant injection, which is known to decrease bubble size, cloud improved the collision efficiency of $CO_2$ bubbles similar to that of air bubbles. Furthermore, the results of the flotation experiments showed similar results with the simulation of the SCC model under anionic surfactant injection. The findings led us to conclude that $CO_2$ bubbles can be an alternative to air bubbles and a promising material as a collector to separate particles in the water and wastewater.

• Journal of Microbiology and Biotechnology
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• 제22권9호
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• pp.1224-1229
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• 2012

Puerarin (P), an isoflavone derived from kudzu roots, has strong biological activities, but its bioavailability is often limited by its low water solubility. To increase its solubility, P was glucosylated by three dextransucrases from Leuconostoc or Streptococcus species. Leuconostoc lactis EG001 dextransucrase exhibited the highest productivity of puerarin glucosides (P-Gs) among the three tested enzymes, and it primarily produced two P-Gs with a 53% yield. Their structures were identified as ${\alpha}$-$_D$-glucosyl-($1{\rightarrow}6$)-P (P-G) by using LC-MS or $^1H$- or $^{13}C$-NMR spectroscopies and ${\alpha}$-$_D$-isomaltosyl-($1{\rightarrow}6$)-P (P-IG2) by using specific enzymatic hydrolysis, and their solubilities were 15- and 202-fold higher than that of P, respectively. P-G and P-IG2 are easily applicable in the food and pharmaceutical industries as alternative functional materials.

• Journal of the Korean BIBLIA Society for library and Information Science
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• 제26권4호
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• pp.5-30
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• 2015

The attention to higher education of individuals with disabilities has been increased. But, there is no concern for successful university life of students with visual impairment. The purpose of this study is to propose systematic learning-support systems for enhancing the rights of college students with visual impairment in accessing and using library materials. To accomplish the purpose of this study, the current states of alternative material system for those with visual impairment and use behavior of college students with visual impairment in Korea were analyzed. This study concluded with the following strategies for constructing the systematic support system for the alternative materials for college students with visual impairment: 1) improvement of The National Library for Individuals with Disabilities' function; 2) empowerment of service center for student with disabilities in University through strengthening network; 3) technical and systematic improvement for copyright protection.

• Journal of Arbitration Studies
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• 제26권4호
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• pp.129-149
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• 2016

Medical dispute means the dispute between the hospital and the patient due to a medical accident. In general, medical accidents must be in accordance with the terms that are used in the medical dispute adjustment method stated in Article 2 (definition). In relation to this, there is a need to discuss an efficient operation scheme for Alternative Dispute Resolution (ADR) in medical disputes. In addition, it is necessary to look at issues of civil liability and criminal liability. In particular, in the consumer dispute arbitration committee, there is a case to make a "decision not to adjust" in aggressive intervention in the process of conflict resolution. The medical staff, on the basis of its "decision," can use this as a proven material for civil and criminal cases. This is rather upon the determination of the consumer council as a typical side effect to defend the user's perspective. This is the "decision" as was expressed from an order, "not adjusted." It is also determined to be easy and clearly timely. In the medical litigation, it is requesting the burden of proof of a patient's cause-and-effect relationship with the doctors committing negligence and medical malpractice. This seems to require the promotion of legislation in the direction to reduce future cases. It is determined that the burden of proof of medical accidents must be improved. The institution receiving the medical accident should prevent a closure report. Further, it is necessary to limit the transition to a franchise point. In this paper, we understand the problems of the current medical dispute resolution system, trying to establish a medical dispute resolution system desirable through an efficient alternative. In addition, it wants help in the protection and realization in medical consumers' and patients' rights. The relevant authorities will take advantage of these measures. After all, this could contribute to the system for a smooth resolution of a medical dispute.

• The Journal of Korean Institute of Communications and Information Sciences
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• 제36권6B호
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• pp.728-737
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• 2011

For the real time monitoring and tracking of shipping container which is one of the core objects for global logistics, Wireless Ad-Hoc Network technology might be needed in stacking environments such as ports, yards and ships. In this paper, we propose a container network routing protocol suitable for port or yard stacking environments which include some constraints such as shadow area problem from metal material, frequent movement of container, etc. With this protocol in which a mesh network algorithm is applied, every container data packet can be delivered to the sink node reliably even with frequent join/leave of container nodes. As soon as a node on path gets malfunction, alternative backup path is supported with notice to neighbor node, which makes constant total optimal path. We also verified that the performance of proposed protocol is better than AODV, one of previous major MANet(Mobile Ad-Hoc Network) protocol with a function for alternative path, which says the proposed protocol is better for frequent join/leave and variable link quality.

• Women's Health Nursing
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• 제4권1호
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• pp.103-122
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• 1998

This study measures the subjectivity(opinions attitudes) of college women. Identifying the schemata (structure of subjectivity) would be a basic step for the sexual educational program and alternative strategies of induced abortion. More concretely, those following research questions are focused. 1) The subjective schemata : find out typologies based on the opinions and attitudes toward the induced abortion. 2) Applications : describe the characteristics of each type. 3) Alternatives : provide suggestion of the alternative strategies for solving the induced abortion problems of women. Q-Methodological method was used for that purpose. As the research method, Q-statements were collected preliminary to the study of through in-depth interviews and a literature review. For the study 34 Q-statements were selected. There were 48 college women as subjects for the research. The 48 college women sorted the 34 statements using the principle of Forced Normal Distribution. The principle of Forced Normal Distribution, which has nine scales to measure the individual opinions, was called. Q-Factor Analysis by using PC Quanl Program to supply the material. According to the outcomes of this study, there were four categories of special opinion about the induced abortion in college women. The first type is called Practical type. The second type is called Responsible type. The third type is called Ambivalent type. As a result, We now need to change our perspective of women's health problems and need to develop realistic way of caring those women in suffering women's problems. Followings are to be suggested of the alternative strategies for solving the induced abortion problems. Finally, The result of the study will provide us the clue for developing the sexual educational program and alternative strategies for women's induced abortion problems.

• Journal of Korean Home Economics Education Association
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• 제24권4호
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• pp.39-58
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• 2012

This study was practiced to compare educational status and recognition of Home Economics curriculum between alternative and general middle school students. The survey was conducted to 130 alternative school students and 241 general school students in Gyeonggi province. In students' satisfaction on their school, there is appeared the highest at 'average'(38.6%) in general schools and 'satisfied'(40.8%) in alternative schools, showing that those in alternative schools have greater satisfaction on their schools(p<0.001). In the degree of recognition on Home Economics curriculum, the perception as an 'important subject' was average of 3.08/5 points in general school and 3.32/5 points in alternative school, indicating that the recognition in alternative schools was higher than general ones(p<0.05). Also, degree of satisfaction on practice and lecture class was higher in alternative than general schools. However, it was found that the use of audiovisual learning material in alternative schools was much smaller than that of general ones, and the former had poor facilities and practice labs. Regarding degrees of interest in Home Economics curriculum, 'average'(36.9%) in general school and 'rather interested in the subject'(38.5%) in alternative schools were most common. About the opinion that they needed to learn Home Economics subject, the answer 'it is needed' was 67.6% in general schools and 79.2% in alternative ones, presenting that the students in alternative schools more felt the need to learn the subject(p<0.05). Regarding the comparison of interest level for each area in Home Economics curriculum according to gender, there was only difference on the area of 'preparation and management for clothing'. On the area, the degree of interest was higher in girls than boys at all the schools(p<0.05). Therefore, in alternative schools, it is suggested that various uses of audiovisual learning materials at teaching and expansion of practice facilities should be provided and created desirable Home Economics class. Also in general schools, it is urgent that countermeasures to increase the practice classes are established in order to improve interest and satisfaction of Home Economics education.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• 제20권4호
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• pp.401-406
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• 2011

This study presents the stress safety analysis of a cylinder, which is manufactured by a tempered ASTM D2, tempered SM45C and normalized SM45C materials, respectively. The inner diameter of three cylinder models are 85mm, 95mm, and 11 Omm and the total length of a cylinder is 2,365mm for a high pressure injection molding machine. The FEM computed results show that the inner diameter of 85mm with a thick thickness of 62.5mm may produce the injection pressure of 325MPa and the inner diameter of 110mm with 50mm thickness reduces up to the injection pressure of 220MPa because of a reduced thickness of a cylinder. These injection pressures are enough for a high pressure injection molding machine assembled by ASTM D2 cylinder. And also, an injection cylinder manufactured by a tempered SM45C material in which is low priee may produce 225MPa injection molding pressure and this may sufficiently endure stress safety compared to that of ASTM D2 cylinder material. Thus, this study recommends that tempered SM45C cylinder is appropriated for a mild injection molding machine as an alternative cylinder material when the safety strength and low prices are considered. But the normalized SM45C cylinder material does not meet a stress safety of yield strength in general.

• Proceedings of the Korean Geotechical Society Conference
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• 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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• pp.1051-1060
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• 2008

The use of the coal ash for surcharge material, in a view of the environmental aspect, can decrease amount of the reclamation through recycling waste materials as well as prevent a destruction of the ecosystem attributed to sand picking. In addition, it can reduce both unit cost of material and construction expenses. In this study, new construction material as alternative surcharge material using coal ash, which is by-product from thermoelectric power plant, were developed. Mixing ratios of fly ash and bottom ash derived from the coal ash in Samchunpo thermoelectric power plants were determined. Furthermore, mixing conditions depending on the ratios of the cement and gypsum used for chemical additive were determined too. Uniaxial compression strength tests were conducted at different mixing conditions and Design graph of optimum mixing ratio at each required strength for economic efficiency is indicated in this paper.