• Title/Summary/Keyword: 치유자원

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Effect of Cyclic Wetting-drying on Self-healing of Cementitious Materials Containing Superabsorbent Polymers (습윤/건조 반복 작용이 고흡수율 폴리머를 함유한 시멘트계 재료의 자기치유에 미치는 영향)

  • Hong, Geuntae;Choi, Seongcheol
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.8 no.1
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    • pp.88-96
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    • 2020
  • In this study, the effect of cyclic wetting-drying on the self-healing of cementitious materials containing superabsorbent polymers (SAPs) were experimentally evaluated. In each cycle, cracked cement paste specimens containing various SAP dosages were exposed to wet conditions for 1 h, during which the capillary water absorption tests and water flow tests were conducted, and then exposed to dry conditions for 47 h. The capillary water absorption test results showed that the sorptivity values of the specimen without SAPs, SAP 0.5%, SAP 1.0%, and SAP 1.5% specimens were decreased by approximately 22.9%, 36.8%, 42.8%, and 46.3%, respectively, after 8 cycles. In addition, the water flow test results showed that the amount of water runoff through the cracks of all cracked specimens gradually decreased over wet/dry cycles, especially the reduction ratio of the amount of water runoff increased with increasing SAP dosage. Furthermore, the swelling behavior of SAPs in cracks by in gress water was con firmed via X-ray computed tomography (CT) analysis. These results indicate that the effective crack width can be reduced as SAPs absorb water and swell, while the water absorbed in SAPs can be released to crack surfaces under dry conditions, further promoting healing product formation. This study demon strates that the in corporation of SAPs can in crease the water tightness of cracks, thereby improving the self-healing efficiency of cementitious materials.

Water Permeability Performance Evaluation of Mortar Containing Crack Self-healing Mineral Admixtures (균열 자기치유 재료 혼입 모르타르의 투수성능 평가)

  • Lee, Woong-Jong;Hwang, Ji-Soon;Ahn, Sang-Wook;Lee, Kwang-Myong
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.4 no.4
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    • pp.463-469
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    • 2016
  • In this paper, compressive strength and water permeability performance for two types of crack self-healing materials such as SH-PO-0 composed of mineral admixtures(expansive agent, swelling material and crystal growth agent) and SH-PO-(5, 15, 30) blended with SH-PO-0 and phosphate additive(PO) dissolving easily calcium ion, were evaluated. The test results show that the water flow of SH-PO-0 decreased steeply at the early age although compressive strength decreased about 9% at 28 days compared with OPC. The higher PO replacement ratio is, the lower compressive strength and more improved water permeability performance is, and thus, based on such results, adequate PO replacement ratio is 15%. It is also found that the self-healing performance of SH-PO-15 was quite improved at the early ages and however, the performance of SH-PO-15 is similar to one of SH-PO-0 at long-term ages, and 28 days compressive strength of SH-PO-15 decreased about 8% compared with SH-PO-0. In addition, it is confirmed from the analysis of SEM-EDS that calcium ions of SH-PO-15 were crystallized more than those of SH-PO-0.

Review of Numerical Approaches to Simulate Time Evolution of Excavation-Induced Permeability in Argillaceous Rocks (점토질 퇴적암 내 굴착영향영역 투수특성의 시간경과 변화 파악을 위한 수치해석기법에 대한 고찰)

  • Kim, Hyung-Mok;Park, Eui-Seob
    • Tunnel and Underground Space
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    • v.30 no.6
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    • pp.519-539
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    • 2020
  • We reviewed numerical approaches to assess a hydraulic properties of excavation-disturbed zone (EDZ)created in argillaceous sedimentary rocks. It has been reported that fractures in the sedimentary rocks containing expansive clays are gradually closing due to swelling and their permeabilities are evolving to the level of in-tact rock, which is known as a self-healing or self-sealing process. The numerical approaches introduced here are capable of simulating spatio-temporal variation of EDZ permeability during long-term operation of a repository by including the self-healing characteristics of fractures, which wa observed in laboratory as well as in-situ experiments, The applicability of the numerical approaches was verified from the comparison to in-situ measurements of EDZ permeability at underground research laboratories.

An Automated Approach to Determining System's Problem based on Self-healing (자가치유 기법을 기반한 시스템 문제결정 자동화 방법론)

  • Park, Jeong-Min;Jung, Jin-Soo;Lee, Eun-Seok
    • The KIPS Transactions:PartD
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    • v.15D no.2
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    • pp.271-284
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    • 2008
  • Self-healing is an approach to evaluating constraints defined in target system and to applying an appropriate strategy when violating he constrains. Today, the computing environment is very complex, so researches that endow a system with the self-healing's ability that recognizes problem arising in a target system are being an important issues. However, most of the existing researches are that self-healing developers need much effort and time to analyze and model constraints. Thus, this paper proposes an automated approach to determine problem arising in external and internal system environment. The approach proposes: 1) Specifying the target system through the models created in design phase of target system. 2) Automatically creating constraints for external and internal system environment, by using the specified contents. 3) Deriving a dependency model of a component based on the created internal state rule. 4) Translating the constraints and dependency model into code evaluating behaviors of the target system, and determinating problem level. 5) Monitoring an internal and external status of system based on the level of problem determination, and applying self-healing strategy when detecting abnormal state caused in the target system. Through these, we can reduce the efforts of self-healing developers to analyze target system, and heal rapidly not only abnormal behavior of target system regarding external and internal problem, but also failure such as system break down into normal state. To evaluate the proposed approach, through video conference system, we verify an effectiveness of our approach by comparing proposed approach's self-healing activities with those of the existing approach.

The Relationship between Perceived Importance of Space and Users' Satisfaction (치유의 숲 산림명상공간 인자의 중요도와 만족도)

  • Kyung-Mi Jung;Won-Sop Shin
    • Korean Journal of Environment and Ecology
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    • v.37 no.4
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    • pp.273-288
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    • 2023
  • Although many studies have been conducted on techniques and effects that can be applied to forest meditation in domestic forest healing meditation research, there has been little research on the space where forest meditation takes place. Nevertheless, a meditation space is not just a place concept but a forest environment element responsible for the healing function of a forest, i.e., a place containing healing factors, and can be an essential clue to the healing mechanism. Therefore, to determine whether a healing forest meditation space is suitable for meditation, this study selected the attribute items of the meditation space using the Delphi expert survey and then surveyed the user satisfaction of the healing forest meditation space using the IPA (Importance Performance Analysis) technique. The survey was conducted from August to November 2022, targeting 315 adults who used the forest meditation space at the National Center for Forest Therapy, the Saneum Healing Forest, and the Jathyanggi Pureunsup Arboretum in Gyeonggi Province. The result of the IPA analysis showed the average satisfaction with the forest meditation space was relatively high at 4.33 points on a 5-point Likert scale (4.33 points for the National Center for Forest Therapy, 4.34 points for the Saneum Healing Forest, and 4.37 points for the Jathyanggi Pureunsup Arboretum), indicating that the three healing forest meditation spaces were suitable for forest meditation. Satisfaction with the "Sounds of nature" was high in all three forests. On the other hand, all three forests showed a relatively low satisfaction with "Quietness," indicating it to be a priority problem to be addressed. Also, an open-ended questionnaire survey showed that the mediation space's natural elements, such as natural sounds, scenery, air, forest spaces, and scents, had a higher positive impact on meditation satisfaction than artificial elements, such as facilities. Therefore, it is essential to secure sound resources such as the sound of water and birds around the meditation space, and it is also necessary to consider ways to create a meditation forest in an independent area to avoid encounters with visitors and allow only participants in the forest healing meditation program to enter to increase satisfaction with forest meditation.

뽕잎추출액 첨가수준에 따른 두부의 관능평가 및 물성측정

  • 김애정;여정숙;류영기;서우영;여익현;정건섭
    • Proceedings of the Korean Society of Food and Cookery Science Conference
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    • 2003.10a
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    • pp.68-68
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    • 2003
  • 최근 대두로 성인병을 예방하고 치유하자는 움직임이 세계적으로 활발히 진행되고 있다. 대두는 오래 전부터 중요한 단백질 식량자원으로서 이용되어 왔으며 그 조성을 살펴보면 단백질 35∼40%, 지질 20% 내외를 함유하고 영양성분이 풍부하다. 대두의 최다 성분인 단백질은 암 예방과 고혈압치료에 효과가 있으며, 콜레스테롤 강하작용을 겸하고 있으며, 대두체로 100g당 평균 213mg 정도의 칼슘이 함유 되어 있어 골다공증 치유에도 유효하다고 한다. 최근 우리나라는 골다공증인구가 점차 증가되고 있으며, 기능성식품시대에 돌입한 식품업계는 칼슘함량이 높은 기능성 신소재 발굴에 혈안이 되어 있는 실정이다. (중략)

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Analysis of Policy Priorities for Training Agro-healing Experts Using the AHP Method (치유농업 전문가 양성을 위한 정책 우선순위 분석)

  • Hong, Ji-Young;Lee, Byung-Oh
    • Journal of Agricultural Extension & Community Development
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    • v.23 no.4
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    • pp.419-429
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    • 2016
  • This study focuses on the policy priorities for training agro-healing experts. Training agro-healing experts is an important task that should boost local community in rural areas. In order to make an efficient decision making, the study analyses priority of relevant policies using the AHP(Analytic Hierarchy Process) method. According to the results, R&D comes out first. Human Resource Development(HRD), financial support, and the construction of legal system comes after R&D. In R&D, qualifications and guidelines for participants comes out the most significant issue. In the aspect of HRD, it is very important to develop and utilize regional personnel such as unemployed youth and retirees from related fields. As for financial support, funding for educational facilities (i.e. classrooms and farmland for practice) is needed. In case of legal system, it is desirable to introduce the recruiting experts system and qualification system certified by government.

Types and Status of Patient Services based on Hospital Library Guidelines (병원도서관 가이드라인에 기반한 환자서비스 유형 및 현황)

  • Rhee, Hey Young
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.30 no.2
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    • pp.89-116
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    • 2019
  • The purpose of this study is to investigate the services provided to the patient based on the guidelines and standards due to the importance of the existence and role of the hospital library. The subject of investigation is foreign hospital library. As a result of the related search terms from search engine Google, researcher selected 90 overseas hospital library sites and examined the type of service based on guidelines and standards. As a result of the survey, services were provided mainly for 'basic service' and 'health information resource service' and 'health information resource service' was provided mainly for 'providing and delivering' rather than 'education'. 'Mental and psychological healing services' were found to be insufficient overall. The suggestion for providing hospital library service is as follows. First, it is necessary to provide library name and service that specialize only in patients. Second, it is necessary to expand bibliotherapy service, which is the center of hospital library service, especially providing culture, rehabilitation and entertainment programs, which are mental and mental healing services. Third, it is necessary to arrange human resources of health librarian and volunteer based on librarian.

Psychological Symbolism of the Shamanic Song of Princess Bari : From the Perspective of Analytical Psychology (무가 바리공주의 심리학적 상징성 : 분석심리학적 입장에서)

  • Young Hee Kim
    • Sim-seong Yeon-gu
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    • v.36 no.1
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    • pp.1-54
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    • 2021
  • Princess Bari, the seventh daughter of the King and Queen, is abandoned at birth. She one day embarks on a solitary journey into the underworld to seek the antidote she needs to save her ailing father. The shamanic myth then depicts terrible ordeals, after which the Princess manages to obtain the elixir of life to bring her parents back to life, leading to her deification as the Queen of all shamans. The life of Princess Bari as the ancestor of shamans incorporates the necessary rite of passage to become a shaman, persevering through all manner of trials and tribulations until death and then being reborn. Princess Bari's story of deification as the goddess of shamans constitutes the archetype or the primitive image of the collective unconscious, the mytheme. From the perspective of analytical psychology, Princess Bari, who became the Queen of shamans after undergoing a process of pain, death, and then rebirth demonstrates a facet of the individuation process, evident in heroic mythology. Princess Bari not only cured her parents of disease but also brought them back to life. What enabled her to obtain the elixir to resurrect her parents was her love and compassion for them based on self-sacrifice, enduring all the trivial and repetitive undertakings of everyday life. She viewed the world and behaved from the perspective of a broader Self. Making herself a powerful healer through the ordeals in the underworld, Princess Bari is the psychopomp as well as the healer archetype. The sacred power of healing that goes beyond the Princess' sufferings represents the Self Archetype inherent in the mentality of the Koreans, in other words, a symbolic power that indicates the divine representation of a healer.

A Case Study on the Healing Forest Development Plan of Kangwon Province (강원도 치유의 숲 조성 기본계획 수립에 관한 연구)

  • Kim, Myeong-Jun;Lee, Joon-Woo;Cha, Du-Song
    • Journal of Forest and Environmental Science
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    • v.26 no.1
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    • pp.53-63
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    • 2010
  • This study carried out to establish a master plan about healing forest in Gangwon-do focusing on healing road and visitor center. The site of this study was approximately 721 ha of mountain in Imgye-myeon, Gangwon-do, and the master plan was established through analysis of humanities-social and natural environments. The healing forest was developed 6 healing trails(10.5 km), devided by 3 steps, and each healing trail was designed to make rest area, wooden bridge, and open space. Also, visitor center, the core place of healing forest, was devided to several spaces as health measurement room, AV room, etc. and was planed for audio-visual education room for visitors.