• 인간식물환경학회지
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• 제23권2호
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• pp.159-170
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• 2020

The purpose of this study was to understand the current status of education and programs and to identify the items that urban residents need most for garden management. First of all, there were 45 sites (40.5%) with gardens operated by city and county local governments nationwide, and 41(91.1%) of them had dedicated staff (1.8 persons on average). The average area of gardens was 18,623 m², garden area per person was 20.27m², the average number of participants was 683, and the average period of use was 8.69 months. In addition to gardening activities, 14 (31.1%) out of 45 sites were operating small group meetings, with an average of 2.29 meetings and 67 participants. In the satisfaction survey after gardening activities, 88.9% of 18 sites were satisfied. According to the questionnaire about education and programs related to garden users, an average of four sessions were conducted per education. In terms of education, the contents were in the following order: basic education on garden cultivation (33.9%) > prior education on garden operation (28.9%) > pest control (14.0%) > eco-friendly management (11.6%) > pesticides and Positive List System (9.9%) > others (1.7%). Over 95% of the respondents were generally satisfied. Regarding the perception survey on which items are needed to develop garden management guidelines, the most necessary items were in the order of crop management (38.7%) > public garden etiquettes among users (27.9%) > pest control (14.4%) > weed management (13.5%) > activities using harvest (5.4%). The contents that are to be included in the guidelines were in the order of garden planning and crop selection (17.2%) > cultivation techniques and schedule (16.5%) > pest and soil management (15.7%) > introduction of garden crops and gardening models (12.7%) > garden etiquettes (10.7%). In establishing urban garden management plans by region, the results will have high utility value as the basic data for continuous garden operation by setting a direction that meets the regional characteristics as well as the needs of urban residents.

• 인간식물환경학회지
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• 제24권6호
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• pp.563-572
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• 2021

Background and objective: The ongoing COVID-19 pandemic restricted daily life, forcing people to spend time indoors. With the growing interest in mental health issues and residential environments, 'pet plants' have been receiving attention during the unprecedented social distancing measures. This study aims to analyze the change in trends of pet plants before and during the COVID-19 pandemic and provide basic data for studies related to pet plants and directions of future development. Methods: A total of 2,016 news articles using the keyword 'pet plants' were collected on Naver News from January 1, 2018 to August 15, 2019 (609 articles) and January 1, 2020 to August 15, 2021 (1,407 articles). The texts were tokenized into words using KoNLPy package, ultimately coming up with 63,597 words. The analyses included frequency of keywords and topic modeling based on Latent Dirichlet Allocation (LDA) to identify the inherent meanings of related words and each topic. Results: Topic modeling generated three topics in each period (before and during the COVID-19), and the results showed that pet plants in daily life have become the object of 'emotional support' and 'healing' during social distancing. In particular, pet plants, which had been distributed as a solution to prevent solitary deaths and depression among seniors living alone, are now expanded to help resolve the social isolation of the general public suffering from COVID-19. The new term 'plant butler' became a new trend, and there was a change in the trend in which people shared their hobbies and information about pet plants and communicated with others in online. Conclusion: Based on these findings, the trend data of pet plants before and after the outbreak of COVID-19 can provide the basis for activating research on pet plants and setting the direction for development of related industries considering the continuous popularity and trend of indoor gardening and green hobby.

• Journal of Periodontal and Implant Science
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• 제33권2호
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• pp.289-299
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• 2003

The autogenous free gingival graft is the most predictable procedure currently used to increase the width of　the attached gingiva in periodontics. But the major disadvantage of the procedure is to create the multiple surgical wounds at both a donor site and a recipient site. The other problem is the limited amount of available　graft material in oral cavity. Therefore, recent researches have been focused to develop the biomaterial to substitute the autogenous gingival tissue. The purpose of this study was to evaluate the histologic healing after　grafting of bilayer artificial dermis, compared to the free gingival graft. Four non-smoking subjects (mean age, 32.5 years) in systemically healthy state and good oral hygiene were selected according to their particular needs for correction of mucogingival problems as suggested by Nabers(1966). The recipient sites were prepared through the procedure for the free gingival graft and were grouped according to the graft materials: Experimental group(n=5) - bilayer artifcia1 dermis ($Terudermis^{(R)}$; Terumo Co. Japan) and Control group(n=6) - free gingival graft with autogenous palatal mucosa. Biopsies were harvested at 1,2,3 and 6 weeks postsurgery to evaluate histologically. At the third week in the experimental group and at the second week of in the control group, the grafts has been clinically stabilized on the recipient bed and the graft border has been blended into the surrounding tissue. In the experimental group after 1 week of grafting, the epithelial migration from the adjacent tissue to graft material was seen and after 3 weeks of grafting, the : nflmmation decreased, collagen layer of the artificial dermis was lost and the basement membrane of epithelium was formed. After 6 weeks of grafting, both groups demonstrated orthokeratinized epithelium and increased thickness of epithelial tissue and the rete peg formation, similar to the adjacent tissue, Histologic evaluation revealed a biologic acceptance and incorporation of the collagen layers of the graft tissue to the host tissue, without foreign body reaction. In conclusion, a bilayer artificial dermis is essentially similar to autogeneous free gingival graft in the correction of mucogingival problems, and has the advantages of decreased patient morbidity (no donor site) and availability of abundant amounts of graft material when needed.

• Archives of Plastic Surgery
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• 제37권4호
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• pp.469-472
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• 2010

Purpose: Aplasia Cutis Congenita (ACC) is a rare disease characterized by the focal defect of the skin at birth, frequently involving scalp, but it may affect any region of the body. There are no etiology known but some conditions such as intrauterine vascular ischemia, amniotic adherences and viral infections are associated. The ideal treatment for the ACC is not known. Superficial and relatively small sized defects (< $3{\times}5\;cm$) may heal spontaneously and large defects related with risks of infection and bleeding may require aggressive surgical treatment. Hyalomatrix$^{(R)}$ is a bilayer of an esterified hyaluronan scaffold beneath a silicone membrane. It has been used as a temporary dermal substitute to cover deep thickness skin defect and has physiological functions derive from the structural role in extracellular matrix and interaction with cell surface receptor. This material has been used for the wound bed pre-treatment for skin graft to follow and especially in uncooperative patient, like a newborn, this could be a efficient and aseptic way of promoting granulation without daily irritative wound care. For this reason, using Hyalomatrix$^{(R)}$ for the treatment of ACC was preferred in this paper. Methods: We report a case of a newborn with ACC of the vertex scalp and non-ossified partial skull defect. The large sized skin and skull defect ($6{\times}6\;cm$) was found with intact dura mater. No other complications such as bleeding or abnormal neurologic sign were accompanied. Escharectomy was performed and Hyalomatrix$^{(R)}$ was applied for the protection and the induction of acute wound healing for 3 months before the split-thickness skin graft. During the 3 months period, the dressing was renewed in aseptic technique for every 3 weeks. The skin graft was achieved on the healthy granulation bed. Results: The operative procedure was uneventful without necessity of blood transfusion. Postoperative physical examination revealed no additional abnormalities. Regular wound management was performed in out-patient clinic and the grafted skin was taken completely. No other problems developed during follow-up. Conclusion: Hyalomatrix$^{(R)}$ provides protective and favorable environment for wound healing. The combination of the use of Hyalomatrix$^{(R)}$ and the skin graft will be a good alternative for the ACC patients with relatively large defect on vertex.

• Journal of Veterinary Science
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• 제24권3호
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• pp.44.1-44.17
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• 2023

Background: Antibiotic resistance is a significant public health concern around the globe. Antimicrobial peptides exhibit broad-spectrum and efficient antibacterial activity with an added advantage of low drug resistance. The higher water content and 3D network structure of the hydrogels are beneficial for maintaining antimicrobial peptide activity and help to prevent degradation. The antimicrobial peptide released from hydrogels also hasten the local wound healing by promoting epithelial tissue regeneration and granulation tissue formation. Objective: This study aimed at developing sodium alginate based hydrogel loaded with a novel antimicrobial peptide Chol-37(F34-R) and to investigate the characteristics in vitro and in vivo as an alternative antibacterial wound dressing to treat infectious wounds. Methods: Hydrogels were developed and optimized by varying the concentrations of crosslinkers and subjected to various characterization tests like cross-sectional morphology, swelling index, percent water contents, water retention ratio, drug release and antibacterial activity in vitro, and Pseudomonas aeruginosa infected wound mice model in vivo. Results: The results indicated that the hydrogel C proved superior in terms of cross-sectional morphology having uniformly sized interconnected pores, a good swelling index, with the capacity to retain a higher quantity of water. Furthermore, the optimized hydrogel has been found to exert a significant antimicrobial activity against bacteria and was also found to prevent bacterial infiltration into the wound site due to forming an impermeable barrier between the wound bed and external environment. The optimized hydrogel was found to significantly hasten skin regeneration in animal models when compared to other treatments in addition to strong inhibitory effect on the release of pro-inflammatory cytokines (interleukin-1β and tumor necrosis factor-α). Conclusions: Our results suggest that sodium alginate -based hydrogels loaded with Chol-37(F34-R) hold the potential to be used as an alternative to conventional antibiotics in treating infectious skin wounds.

• 한국자연치유학회지
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• 제7권2호
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• pp.51-62
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• 2018

목적: 제주도 교래자연휴양림을 탐방한 대상자들 중 49명은 삼림욕을 한 후에 스트레스와 누적스트레스의 변화를 측정하였고, 또한 대상자들 중 85명은 설문을 통해서 직무스트레스, 사회 심리적 스트레스 및 상태불안감의 해소 등에 대한 설문을 하여 스트레스 수준의 변화를 조사하는 것이 목적이었다. 방법: 유비맥파기를 이용하여 스트레스의 수준을 측정하였고, 설문을 실시하여 데이터를 도출하였다. 결과: 삼림욕 후 스트레스 수준의 변화에서는 대조군은 사후에 스트레스가 증가하여 유의성이 없었고, 실험군은 사전보다 사후에 감소하여 유의성이 있었다(p<.043). 또한 분산분석에서는 그룹간에는 유의성이 있었고(p<.049), 그룹과 사전사후의 평균치에서도 유의성이 있었다( p<.048). 누적 스트레스의 변화에서는 실험군은 사전보다 사후에 감소하여 유의성이 있었다(p<.02). 또한 분산분석에서는 그룹간에서는 유의한 감소차이가 있었고(p<.047), 그룹과 사전사후 간에서도 유의한 차이가 있었다(p<.002). 전체적으로 직무스트레스의 설문의 경우에 사전보다 사후에는 감소하여 유의성이 있었다(p<.001).물리환경 및 직무요구도는 유의성이 없었다. 직무자율성, 관계갈등, 조직체계 불공정성, 보상부적절 및 직장문화의 경우에도 스트레스가 감소하여 유의성이 있었다(p<.001). 사회 심리적 스트레스 및 상태특성 불안감은 사전보다 사후에 감소하여 유의성이 있었다(p< .001). 결론: 교래자연휴양림에서 삼림욕을 한 후에는 스트레스와 불안감도 모두 감소하여 유의성이 있게 나타나서 스트레스 해소를 위한 자연치유 장소로서 크게 도움이 되는 기초정보를 제공하고 있다.

• 한국건설순환자원학회논문집
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• 제11권2호
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• pp.138-144
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• 2023

본 연구에서는 알칼리 침출수의 수서환경 완화를 위한 전기화학적 처리에 대한 효과를 평가하였다. 시멘트 페이스트의 표면을 개질하기 위해 1,000 mA/m² 의 직류를 양극 graphite를 통해 외부 메쉬로 4주 동안 통전한 후, 물 속의 알칼리 침출이 자연적으로 치유되는 것을 방지하기 위해 시멘트 페이스트 시편을 밀폐된 상태의 정지된 물에 침지시켰다. 물 속에서 100일간의 모니터링 한 결과, 전기화학적 처리를 한 시편의 pH 값은 약간 증가한 반면, control 시편의 pH의 경우 13.2를 나타내어 훨씬 더 높은 pH값을 나타내었다. 또한, pH 모니터링 이후 시멘트 페이스트 시료에 대한 pH 프로파일은 전기화학적 처리가 시멘트 매트릭스의 높은 알칼리도 확보에 효과적임을 알 수 있었다. 알칼리 침출 공정에서 얻은 알칼리침출수는 다프니아 마그나의 생태학적 테스트에 사용되었다. Control 시편은 표준 Daphnia Magna를 대부분 고정시킨 반면, 전기화학적 처리기법의 경우 생태학적으로 매우 우수하다는 것을 확인하였다.

• 생물환경조절학회지
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• 제27권3호
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• pp.231-238
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• 2018

본 연구는 대목과 접수의 결합 단계에서 나타나는 스트레스를 오이접목묘의 엽록소형광반응, 엽록소함량, 활착 및 생장 특성 측면에서 분석하고자 수행되었다. 이를 위해서 활착실 내의 광합성유효광양자속은 25, 50, 100, $150{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$의 4수준으로 설정되었고, 기온, 상대습도 및 LED 램프의 광주기는 각각 $25^{\circ}C$, 90%, $16h{\cdot}d^{-1}$이었다. 본 연구에서 얻어진 결과를 요약하면 다음과 같다. 대목의 최대양자수율은 0.84-0.85로서 광량에 따른 분명한 차이가 나타나지 않았다. 한편, 접수의 최대양자수율은 접목 후 2일째에 0.81-0.82로 낮게 나타났으나, 3일째부터 광량이 높을수록 접수의 최대양자수율이 증가하였다. 활착 후 4일째에 측정된 접수의 엽록소함량은 광량이 증가할수록 높게 나타났다. 오이접목묘의 활착율은 광량이 $100{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ 이하일 때 90-95% 정도로 높게 나타났으나, $150{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$의 처리구에서는 80% 정도로 저하되었다. 광주기에 따라 다르나, 오이접목묘의 활착에 적합한 한계 광량은 플러그 트레이 표면에 조사된 광량을 기준으로 $100{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ 정도이다. 본 연구에서 처리된 광강도 하에서 활착된 오이접목묘의 발근에 최소 2일이 소요되었고, 이 기간에 접수의 최대양자수율은 최저치로 나타났다. 활착 단계에서 조사되는 광량에 따라 대목과 접수의 변이형광과 최대양자수율이 다르게 나타났다. 그러므로 접목묘의 활착 단계에서 나타나는 스트레스를 줄이면서 대목의 발근을 촉진하고, 접수의 최대 양자수율이 급격하게 저하되는 것을 방지하려면 광 및 습도 등의 물리적 환경이 정확하게 제어되어야 한다. 향후 접목묘의 활착 단계에서 대목의 발근, 통도조직의 결합 상태, 수분의 이동에 따른 엽록소함량 변화를 정량적으로 구명할 필요가 있다.

• International Journal of Costume and Fashion
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• 제13권1호
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• pp.35-47
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• 2013

We know that humans are able to live comfortably when there is a balance between the living environment that surrounds us and us. Clothing, one of the necessities of life, serves a dual purpose of functioning as protection for the body as well as providing visual satisfaction, and so is the most effective bonding mechanism. A different type of comfort that has been provided through industrialization and advancements in technology has resulted in pollution problems in the environment, and it has reached a point of seriously thinking about its effects. The biggest problems in environmental pollution are air pollution and waste disposal, and something that cannot be ignored is that environmental hormones and harmful heavy metals have been discovered in the synthetic dyes used in the clothing product, and not only are they harmful to the body, but they also have adverse effects on skin allergies such as atopic dermatitis. Its effects on clothing, especially underwear and baby products, can become a serious issue. The use of natural vegetable dye can be considered the basis for the traditional Korean dyeing process, however not all natural dyeing process can be thought of as traditional Korean dyeing. This is because natural dyeing used to be the most common method of dyeing before synthetic dyes came along and became the dye of choice for most clothing. Natural dyes are beneficial to the body, and the nature colors, achieved from the natural materials, relieve eye strains as well as have a healing effect for people who are suffering from psychological instability such as stress. However, the use of mordant in order to increase the fastness and get better color effects can lead to even more damage to the environment, and it cannot be a dyeing method that is good for the body. Traditional natural dyeing is different from regular natural dyeing because it uses colors that the Korean people can identify with and applies specific methods in order to achieve those colors. Even though experimental study with dyestuff and practical use of the dyeing methods for traditional Korean dyeing has been started(Soh, H., 1983) and has been ongoing, it is still not easy for regular people to use the method on their own. At the present time, natural dye materials are getting made and sold more than ever, but there is a lot of confusion among consumers regarding the difference between traditional Korean dyeing and natural dyeing, as companies are using the two terms interchangeably to market their natural dye products. So getting a better understanding of the characteristics of traditional Korean dyeing and traditional colors should be considered first priority at this time. The purpose of this thesis is to study the traditional Korean view of color, which developed the culture of traditional dyeing in Korea, and the characteristics of traditional Korean dyeing, a method that pursued achieving Korea's color through natural dyeing.

• Journal of Biosystems Engineering
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• 제25권3호
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• pp.213-220
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• 2000

Grafting of fruit-bearing vegetables has been widely used to increase the resistance to soil-borne diseases, to increase the tolerance to low temperature or to soil salinity, to increase the plant vigor, and to extend the duration of economic harvest time. After grafting, it is important to control the environment around grafted seedlings for the robust joining of a scion and rootstock. Usually the shading materials and plastic films are used to keep the high relative humidity and low light intensity in greenhouse or tunnel. It is quite difficult to optimally control the environment for healing and acclimation of grafted seedlings under natural light. So the farmers or growers rely on their experience for the production of grafted seedling with high quality. If artificial light is used as a lighting source for graft-taking of grafted seedlings, the light intensity and photoperiod can be easily controlled. The purpose of this study was to develop a prototype system for the graft-taking enhancement of grafted seedlings using artificial lighting and to investigate the effect of air current speed on the distribution of air temperature and relative humidity in a graft-taking enhancement system. A prototype graft-taking system was consisted by polyurethane panels, air-conditioning unit, system controller and lighting unit. Three band fluorescent lamps (FL20SEX-D/18, Kumho Electric, Inc.) were used as a lighting source. Anemometer (Climomaster 6521, KANOMAX), T-type thermocouples and humidity sensors (CHS-UPS, TDK) were used to measure the air current speed, air temperature and relative humidity in a graft-taking system. In this system, air flow acted as a driving force for the diffusion of heat and water vapor. Air current speed, air temperature and relative humidity controlled by a programmable logic controller (UP750, Yokogawa Electric Co) and an inverter (MOSCON-G3, SAMSUNG) had an even distribution. Distribution of air temperature and relative humidity in a graft-taking enhancement system was fairly affected by air current speed. Air current speed higher than 0.1m/s was required to obtain the even distribution of environmental factors in this system. At low air current speed of 0.1m/s, the evapotranspiration rate of grafted seedlings would be suppressed and thus graft-taking would be enhanced. This system could be used to investigate the effects of air temperature, relative humidity, air current speed and light intensity on the evaportranspiration rate of grafted seedlings.