• 한국환경생태학회지
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• 제33권1호
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• pp.107-115
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• 2019

본 연구의 목적은 숲 환경을 이용한 산림치유 6대 요법 중 걷기, 경관 감상, 숲속 향기를 이용한 산림치유프로그램 체험활동이 독거노인의 인지기능, 우울, 삶의 질에 미치는 영향을 검증하기 위한 것이다. 연구대상은 삼척시에 거주하며 우울증과 건망이 심하다고 호소하는 독거노인 17명이 연구에 참여하였다. 이들은 각 두 집단으로 나뉘어 각 집단은 매 주 1회(총 6회기) 산림치유프로그램에 참여하여 설문조사를 하였다. 이들은 모두 인지기능, 우울, 삶의 질에서의 변화를 관찰하기 위해 한국형 간이 정신상태 검사(MMSE-K), BDI(Beck Depression Inventory 한국판), SF-36(Short Form 36 health survey questionnaire)에 대한 사전-사후(one-group pre-post test design) 설문지 검사를 받았다. 연구결과 치유 프로그램 참여 후 응답자의 정신상태와 우울 수준 그리고 삶의 질이 모두 유의미하게 높아진 것으로 나타났다. 이 결과를 통해서 산림환경을 이용한 치유프로그램 활동 참여가 은둔형 독거노인에게 인지기능 향상과 우울 해소 그리고 삶의 질 개선에 도움이 됨을 알 수 있었다. 따라서 홀로 남겨져 외부활동을 기피하는 은둔형 독거노인을 대상으로 정기적인 산림치유 프로그램에 참여토록 유도할 경우 나이와 환경으로 인한 치매 예방에 기여할 것으로 생각한다.

• 디지털융복합연구
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• 제17권12호
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• pp.337-344
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• 2019

이 연구의 목적은 프로스트 시에 나타나는 치유적 기능으로서의 불확실성을 고찰해 보는 것이다. 시치료에서 다루고 있는 치료적 기능 중 하나는 삶을 새로운 시각으로 바라보게 하는 것인데 프로스트 시는 이런 면을 불확실성으로 드러내고 있다. 프로스트의 불확실성은 그의 독특한 시론과 이원론 철학에 기초를 두고 있어 이 점을 연구하고 몇 편의 시 작품들을 통해 불확실성의 양상을 좀 더 구체적으로 분석하였다. 연구결과 프로스트는 시를 통해 우리사회가 지닌 비논리성, 애매성, 예측불가능, 그리고 일상에서의 두려움과 외로움과 불안을 드러내고 삶의 복잡한 문제를 있는 그대로 보여줌으로써 이를 극복할 수 있는 치유적 수단을 제시하고 있음을 알 수 있었다. 따라서 불확실성을 담고 있는 프로스트의 시가 정신건강 회복과 치유와 성장의 가능성을 제공한다고 볼 수 있다. 앞으로 영시의 치료적 기능에 대한 실용적인 심도 있는 연구가 필요하다.

• 한국산학기술학회논문지
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• 제15권5호
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• pp.2655-2661
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• 2014

본 연구는 치유예술로서의 춤이 여성노인의 뇌기능에 어떤 영향을 미치는 지, 2channel system EEG를 통해 검증하였다. 연구 대상은 K시 소재 65세이상 여성노인 60명, 연구기간은 2013년 3월에서 2013년 7월까지, 주 1회, 회기 당 60분씩, 총 16주 동안 프로그램을 실시하였다. 참여대상 30명은 실험집단, 30명은 통제집단으로 구성하여 프로그램 실시전후에 뇌파를 측정하였다. 연구 결과는, 실험집단에서 기초율동지수 좌뇌 사후(79.11/89.56, p<.015), 주파수우뇌 사후 평균값(8.33/9.37, p<.003), 진폭좌뇌 사후 평균값(39.87/47.19, p<.006), 진폭우뇌 사후(40.09/49.87, p<.000)의 상승을 보였다. 따라서 치유예술로서의 춤이 여성노인의 기초율동지수, 주파수와 진폭을 상승시켜 뇌기능 향상 프로그램으로서의 효용과 가치를 검증하였다.

• 한국게임학회 논문지
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• 제18권6호
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• pp.39-48
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• 2018

최근에 신체적, 심리적 힐링(healing) 기능이 있는 게임들이 출시되고 있다. 힐링 게임은 사용자에게 힐링의 요소를 제공하는 장점이 있는 반면에, 힐링 콘텐츠의 속성 상 콘텐츠가 비교적 단순하여 강한 자극 보다는 심리적 안정을 주는 특성이 강하다. 지속적인 자극과 게임의 몰입성 측면이 다소 약하여 힐링 게임의 경우 인기가 지속적이지 못한 경향이 있다. 이에 본 논문에서는 국내외 힐링 게임을 모바일, 콘솔, PC 등 플랫폼 종류별로 분류하여 조사하고 Nicole Lazzro가 제안한 '4가지 재미요소(Hard Fun, Easy Fun, Serious Fun, People Fun)'를 기준으로 힐링 게임들의 특성을 분석한다. 이 분석을 통해 기존의 힐링 게임들이 '4가지 재미요소'를 얼마나 포함하고 있는지 분석하고, 재미요소와 힐링 게임의 인기 간의 상관관계를 파악한다.

• Earthquakes and Structures
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• 제16권6호
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• pp.727-741
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• 2019

A reinforced concrete water tank is a typical functional liquid storage structure and cracks are the greatest threat to the liquid storage structure. Tanks are readily cracked due to seismic activity, thereby leading to the leakage of the stored liquid and a loss of function. In order to study the effect of cracks on liquid storage tanks, self-healing and leakage tests for bending cracks and through cracks in the walls of a reinforced concrete water tank were conducted. Material performance tests were also performed. The self-healing performance of bending cracks in a lentic environment and through cracks in a lotic environment were tested, thereby the self-healing width of bending micro-cracks in the lentic environment in the short term were determined. The through cracks had the capacity for self-healing in the lotic environment was found. The leakage characteristics of the bending cracks and through cracks were tested with the actual water head on the crack. The effects on liquid leakage of the width of bending cracks, the depth of the compression zone, and the acting head were determined. The relationships between the leakage rate and time with the height of the water head were analyzed. Based on the tests, the relationships between the crack characteristics and self-healing as well as the leakage were obtained. Thereby the references for water tank structure design and grading earthquake damage were provided.

• 한국산림과학회지
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• 제103권3호
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• pp.453-461
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• 2014

산림치유에 대한 수요가 급증함에 따라 산림청뿐만 아니라 각 지자체에서 치유의 숲 조성을 활발하게 추진하고 있다. 막대한 예산이 투입되는 정책이니만큼 정책 추진의 타당성을 신중히 검토할 필요가 있다. 따라서 이 연구는 이용객 수가 급증하고 있는 장성 치유의 숲의 이용가치를 추정하는 것이 목적이다. 이를 위해 장성 치유의 숲 이용객 400명을 대상으로 설문조사를 실시하였으며, 이 가운데 불성실 응답지 9부를 제외한 391부를 분석에 사용하였다. 경제적 가치 추정은 1.5 양분선택형 CVM 방법을 적용하였다. 분석 결과, 장성 치유의 숲의 1인 1회 이용료에 대한 지불의사금액($WTP_{mean}$)은 35,010원, 연간 이용가치는 약 75억 원으로 추정되었다.

• Journal of Microbiology and Biotechnology
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• 제17권10호
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• pp.1661-1669
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• 2007

Gamma-aminobutyric acid (GABA) is a non-protein amino acid. It is well known for its role as an inhibitory neurotransmitter of developing and operating nervous systems in brains. In this study, a novel function of GABA in the healing process of cutaneous wounds was presented regarding anti-inflammation and fibroblast cell proliferation. The cell proliferation activity of GABA was verified through an MTT assay using murine fibroblast NIH3T3 cells. It was observed that GABA significantly inhibited the mRNA expression of iNOS, IL-$1{\beta}$, and TNF-${\alpha}$ in LPS-stimulated RAW 264.7 cells. To evaluate in vivo activity of GABA in wound healing, excisional open wounds were made on the dorsal sides of Sprague-Dawley rats under anesthesia, and the healing of the wounds was apparently assessed. The molecular aspects of the healing process were also investigated by hematoxylineosin staining of the healed skin, displaying the degrees of re-epithelialization and linear alignment of the granulation tissue, and immunostaining and RT-PCR analyses of fibroblast growth factor and platelet-derived growth factor, implying extracellular matrix synthesis and remodeling of the skin. The GABA treatment was effective to accelerate the healing process by suppressing inflammation and stimulating re-epithelialization, compared with the epidermal growth factor treatment. The healing effect of GABA was remarkable at the early stage of wound healing, which resulted in significant reduction of the whole healing period.

• Macromolecular Research
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• 제12권5호
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• pp.478-483
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• 2004

Two different diene monomers [dicyclopentadiene (DCPD) and 5-ethylidene-2-norbornene (ENB)] as self-healing agents for polymeric composites were microencapsuled by in situ polymerization of urea and formaldehyde. We obtained plots of the storage modulus (G') and tan $\delta$ as a function of cure time by using dynamic mechanical analysis to investigate the cure behavior of the unreacted self-healing agent mixture in the presence of a catalyst. Glass transition temperatures (T$\_$g/) and exothermic reactions of samples cured for 5 and 120 min in the presence of different amounts of the catalyst were analyzed by differential scanning calorimetry. Of the two dienes, ENB may have advantages as a self-healing agent because, when cured under same conditions as DCPD, it reacts much faster in the presence of a much lower amount of catalyst, has no melting point, and produces a resin that has a higher value of T$\_$g/. Microcapsules containing the healing agent were successfully formed from both of the diene monomers and were characterized by thermogravimetric analysis. Optical microscopy and a particle size analyzer were employed to observe the morphology and size distribution, respectively, of the microcapsules. The microcapsules exhibited similar thermal properties as well as particle shapes and sizes.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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• pp.22-23
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• 2017

The purpose of this study is to ascertain self-healing function on microcracks in bisphenol F-type epoxy-modified mortars using expansive admixtures. The specimens are prepared with various polymer-binder ratios of 0, 5, 10, 20%, expansive admixture contents of 0% and 10%, a sodium carbonate content of 0.25%, and subjected to exposure conditions of CR1, CR2, CR3 and CR4. The specimens are tested for self-healing effect, porosity and FE-SEM analysis. As a result, self-healing effects of bisphenol F-type EPMMs with expansive admixtures are visible in all of the outdoor exposure conditions. In particular, exposure conditions of CR3 and CR4 are most noticeable. And the porosity of EPMMs is reduced with an increase in the polymer-binder ratio, and is considerably smaller than that of unmodified mortar.

• 한국정밀공학회지
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• 제3권1호
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• pp.40-49
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• 1986

Crack, craze and void are common defects which may be found in the bulk of polymeric materials such as either themoplastics or thermosets. The healing phenomena, autohesion, of these defects are known to be a intrinsic material property of various polymeric materials. However, only a few experimental and theoretical investigations on crack, void and craze healing phenomena for various polymeric materials have been reported up to date [1, 2, 3]. This may be partly due to the complications of healing processes and lacking of appropriate theoretical developments. Recently, some investigators have been urged to study the healing phenomena of various polymenic materials since the significance of the use of polymer based alloys or composites has been raised in terms of specific strength and energy saving. In the earlier published reports [1, 2, 3, 4], the crack and void healing velocity, healing toughness and some other healing mechanical and physical properties were measured experimentally and compared with predicted values by utilizing a simple model such as the reptation model under some resonable assumptions. It seems, however, that the general acceptance of the proposed modeling analyses is yet open question. The crack healing processes seem to be complicate and highly dependent on the state of virgin material in terms of mechanical and physical properties. Furthermore, it is also strongly dependent on the histories of crack, craze and void development including fracture suface morphology, the shape of void and the degree of disentanglement of fibril in the craze. The rate of crack healing may be a function of environmental factors such as healing temperature, time and pressure which gives different contact configurations between two separated surfaces. It seems to be reasonable to assume that the crack healing processes may be divided in several distinguished steps like stress relaxation with molecular chain arrangement, surface contact (wetting), inter- diffusion process and com;oete healing (to obtain the original strength). In this context, it is likely that we no longer have to accept the limitation of cumulative damage theories and fatigue life if it is probable to remove the defects such as crack, craze and void and to restore the original strength of polymers or polymer based compowites by suitable choice of healing histories and methods. In this paper, we wish to present a very simple and intuitive theoretical model for the prediction of healed fracture toughness of cracked or defective polymeric components. The central idea of this investigation, thus, may be the modeling of behavior of chain molecules under healing conditions including the effects of chain scission on the healing processes. The validity of this proposed model will be studied by making comparisons between theoretically predicted values and experimentally determined results in near future and will be reported elsewhere.