• 한국실내디자인학회논문집
• /
• 제20권1호
• /
• pp.24-32
• /
• 2011

The study was to grasp features of new material applicable to housing space in the sustainable side by analyzing materialistic features of new material and features of sustainable material with sustainable new material. Through analysis on sustainable new material, the study deducted the below conclusion. First, through the precedent studies, the characteristics of sustainable materials have been classified into eight categories : friendly healthiness, non-toxicity, comfortableness, naturality, recycling, harmlessness of environment, separate collection, reusability. After the criteria have been brought up from new material applicable to housing space in the sustainable. Second, in materialistic Characteristics of new material, 'New Process' was mainly applied. There was no any new material applied to 'new raw material'. Therefore, it is thought that it is necessary to study on development of perfectly new material and to study on new material to apply material used in other fields to finishing material of dwelling space. Third, in Characteristics of sustainable material, 'Re-serviceability' appeared most and 'Non-toxicity' and 'Recycling' appeared in the next. 'Friendly Healthiness' and 'Separate collection' appeared only one on the other side. Therefore, it is judged that it is necessary to develop and study new material including health components considering user's health, function for health increase and function to grope comfort for humans. Finally, after researching and analysis the criteria by recently presented the new material, it has been concluded that the standard can be used as the criteria of new material for the possibility of application in housing space. On the basis of the study, the author will carry out analysis on sustainable new material minutely and utilize it as basic data to suggest a standard of sustainable new material applicable to dwelling space in the future.

• Nuclear Engineering and Technology
• /
• 제52권4호
• /
• pp.797-801
• /
• 2020

Most of irradiated graphite that should be disposed comes from moderators and reflectors of nuclear power plants. The quantity of irradiated graphite could be higher in the future if high-temperature reactors (HTRs) will be deployed. In this case noteworthy quantities of fuel pebbles containing semi-graphitic carbonaceous material should be added to the already existing 250,000 tons of irradiated graphite. Industry graphite is largely used in industrial applications for its high thermal and electrical conductivity and thermal and chemical resistance, making it a valuable material. Irradiated graphite constitutes a waste management challenge owing to the presence of long-lived radionuclides, such as ¹⁴C and ³⁶Cl. In the ENEA Nuclear Material Characterization Laboratory it has been successfully designed a procedure based on the exfoliation process organic solvent assisted, with the purpose of investigate the possibility of achieving graphite significantly less toxic that could be recycled for other purpose [1]. The objective of this paper is to evaluate the possibility of the scalability from laboratory to industrial dimensions of the exfoliation process and provide the prototype of a chemical plant for the treatment of irradiated graphite.

• 한국가구학회지
• /
• 제27권2호
• /
• pp.80-90
• /
• 2016

The idea of Sustainable, first mentioned in "Our Future (Bruntdland)" from the United Nations report released in 1987 has been highly affect design disciplines in developed countries in 21st century. It relocated industrial society and structure's attentions to nature and recourse conservation and reuse. Designed and manufactured products eventually disposed and it leads to waste of resources as well as creates environmental issues. Unfortunately, vast majority of designers starts designing without anticipation of this matter and produce more believing this leads to more sales. However shorter life of a product will create bigger increase of resource consumption and waste than, importance of re-usage and recycle will eventually increase. In modern furniture industry metal and plastics are frequently used beside wood that material has been diverse than in past. However, there are lack of plans and regulations of re-usage of those material due to difficulties of separating each different materials and collecting due to it's size. This study would like to look into recycling rate, methods and usage of three major materials (wood, metal, plastic) that is typically used in current furniture industries. Furthermore, see the potential of sustainable furniture by analyzing furniture practices made by each different recycled material from old furniture and what designers should consider to achieve feasibility of sustainable furniture.

• 한국디자인학회:학술대회논문집
• /
• 한국디자인학회 2005년도 춘계 학술발표대회 논문집
• /
• pp.26-27
• /
• 2005

• Advances in concrete construction
• /
• 제18권2호
• /
• pp.105-113
• /
• 2024

Traditional methods for landscape design using recycled waste materials, which rely primarily on manual selection and placement for integration and optimization, frequently encounter sustainability issues, which reduce the overall efficiency. To address these constraints, this study proposes a hybrid machine-learning technique that leverages AI-enhanced algorithms to improve the usage of recycled materials in landscape design. Based on total adaptive learning models, this strategy incorporates adaptive correction of material variations, followed by improvement utilizing AI-informed selection algorithms. AI technologies, particularly AI sensing techniques, are used to improve adaptive material integration, allowing for more incredible sustainable growth of landscape projects. The AI-enhanced technique allows for more precise utilization and analysis of recycled materials at the design level, considerably improving the sustainability of landscape projects. The experimental results show a significant increase in the effectiveness of landscape projects processed with these AI-enhanced techniques. The findings support the suggested method's efficacy, demonstrating its robust enhancing capabilities, efficiency, and practical applicability in sustainable landscape design. This advancement contributes significantly to improving the quality of landscape projects, particularly in sustainable development applications where precision and resource optimization are critical.

• KIEAE Journal
• /
• 제13권2호
• /
• pp.33-38
• /
• 2013

Limited resources for construction material in the Mae-Hae region, a remote Northern Thailand, acted as an impetus to introduce a new way for constructing their dwellings. The new construction material brought new construction methodology, namely, using earth and bamboo which are indigenous materials, readily available for them to use. Using indigenous material at Mae-Hae region was most ecological and logical method for establishing sustainable dwellings both in terms of monetary and ecological reasons. Prior to the construction at Mae-Hae, Thailand, series of experimental tests on the strength of rammed earth were performed off site at our university and also brought soil samples from the actual job site at Mae-Hae for detailed soil analysis. Through the tests, integrity of the earth and characteristics of the soil were established to build a small senior citizen center as an example. This appropriate technology is expected to contribute to the sustainable construction at Mae-Hae.

• Advances in concrete construction
• /
• 제20권5호
• /
• pp.383-391
• /
• 2025

The sustainable utilization of agricultural by-products in concrete production is essential for reducing environmental impact and enhancing material efficiency. Rice Husk Ash (RHA), a by-product of rice milling, serves a dual role in concrete as both a pozzolanic and filler material. This study investigates the influence of RHA on concrete properties, focusing on its pozzolanic activity and filler effect. RHA was incorporated into concrete at 0%, 5%, 10%, 15%, 20%, and 25% of the cement weight without replacing the cement. After thorough mixing, workability was evaluated through a slump test, while compressive strength was assessed after 7 and 28 days of curing. The results revealed that RHA significantly increased water demand to maintain workability and reduced the unit weight of hardened concrete. However, at an optimal dosage of up to 5%, RHA enhanced compressive strength and modulus of elasticity due to its pozzolanic reaction and particle packing effect. Higher replacement levels negatively impacted strength performance, highlighting the need for a balanced approach in mix design. This study underscores the potential of RHA as a sustainable alternative in concrete, reducing agricultural waste while improving material performance. By leveraging its dual functionality, RHA contributes to environmentally friendly construction practices by incorporating it into concrete production.

• Journal of Microbiology and Biotechnology
• /
• 제23권4호
• /
• pp.437-443
• /
• 2013

The diversity of culturable non-actinobacterial (NA) bacteria associated with four species of South China Sea gorgonians was investigated using culture-dependent methods followed by analysis of the bacterial 16S rDNA sequence. A total of 76 bacterial isolates were recovered and identified, which belonged to 21 species of 7 genera, and Bacillus was the most diverse genus. Fifty-one percent of the 76 isolates displayed antibacterial activities, and most of them belonged to the Bacillus genus. From the culture broth of gorgonian-associated Bacillus methylotrophicus SCSGAB0092 isolated from gorgonian Melitodes squamata, 11 antimicrobial lipopeptides including seven surfactins and four iturins were obtained. These results imply that Bacillus strains associated with gorgonians play roles in coral defense mechanisms through producing antimicrobial substances. This study, for the first time, compares the diversity of culturable NA bacterial communities among four species of South China Sea gorgonians and investigates the secondary metabolites of gorgonian-associated B. methylotrophicus SCSGAB0092.

• Nuclear Engineering and Technology
• /
• 제51권4호
• /
• pp.1037-1040
• /
• 2019

For the past 50 years, graphite has been widely used as a moderator, reflector and fuel matrix in different kinds of gas-cooled reactors. Resulting in approximately 250,000 metric tons of irradiated graphite waste. One of the most significant long-lived radioisotope from graphite reactors is carbon-14 ($^{14}C$) with a half-life of 5730 years, this makes it a huge concern for deep geologic disposal of nuclear graphite (NG). Considering the lifecycle of NG a number of waste management options have been developed, mainly focused on the achievement the radiological requirements for disposal. The existing approaches for recycling depend on the cost to be economically viable. In this new study, an affordable process to remove $^{14}C$ has been proposed using samples taken from the Nuclear Power Plant in Latina (Italy) which have been used to investigate the capability of organic and inorganic solvents in removing $^{14}C$ from exfoliated nuclear graphite, with the aim to design a practicable approach to obtain graphite for recycling or/and safety disposed as L& LLW.