• 한국생물환경조절학회:학술대회논문집
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• 한국생물환경조절학회 2002년도 추계 심포지엄 및 학술발표 논문집
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• pp.203-211
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• 2002

원예용상토의 국내 소개는 1980년대 후반에 해외 제품 중 유럽산 Black Peat Moss가 주재료로 사용된 상토(Soilless Media, Potting Soil)를 농가에 처음으로 보급하기 시작하였고, 90년대 초반에는 코코넛 열매의 부산물인 Coco Peat(Coir Dust)을 유기물 주재료하고 무기물재료로 Zeolite를 혼합한 국내산 상토가 처음으로 제조 공급되었고, 그 이후로는 유기물은 Peat Moss와 Coco Peat를 혼합 또는 단용으로 하고 무기물 재료는 Zeolite, Perlite, Vermiculite 등을 첨가한 다양한 제품이 소비자에게 공급되기에 이르렀다. (중략)

• 한국환경농학회지
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• 제41권2호
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• pp.101-107
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• 2022

BACKGROUND: Soil amendment was necessary applied for the sand that had been used to root zone of green ground in golf course because of its low water retention power and cation exchangeable capacity. This study was conducted to evaluate the effect of the mixed ratio of peat moss and coconut coir as soil amendment materials on the soil physicochemical properties applied to rootzone based on sand. METHODS AND RESULTS: The soil amendments were blended at 0, 3, 5, 7 and 10% by soil volume. The pH in the peat moss treatment was lower than that of control (0% soil amendment), and pH and electrical conductivity (EC) in the coconut coir were higher. The blending ratio of peat moss was negatively correlated with pH of rootzone soil (p<0.01), and that of coconut coir positively with EC (p<0.01). As compared with control, capillary porosity, the physical factors such as air-filled porosity, total porosity, and hydraulic conductivity of rootzone soil were increased by applying peat moss and coconut coir. For correlation coefficients between percentage of soil amendments and soil physical factors, peat moss and coconut coir were positively correlated with porosity and hydraulic conductivity (p<0.01). CONCLUSION(S): These results indicated that the application of peat moss and coconut coir affected on the change of physicochemical properties of rootzone soil, and improved soil porosity and hydraulic conductivity.

• 한국토양비료학회지
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• 제43권6호
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• pp.858-863
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• 2010

블루베리는 유기물 함량이 높고 물리성이 양호한 산성토양에서 안정적인 생육을 기대할 수 있다. 그러나 국내 작물 재배토양은 배수가 불량하고 유기물 함량이 낮은 알칼리 토양이 대부분이다. 따라서 블루베리 재배 농가들은 적합한 토양으로 개량하기 위하여 피트모스에 크게 의존하고 있으나, 작물생육과 경제성이 고려된 혼합비율의 정보가 미흡한 실정이다. 본 연구는 경제성과 안정생육을 고려한 적정 피트모스 혼합비율 구명과 이와 비슷한 물리 화학적 특성을 가진 톱밥과 코코피트의 적용 가능성을 검토하고자 본 연구를 수행하였다. 본 연구에 사용된 유기자재는 피트모스, 코코피트 그리고 신선한 톱밥이며, 각각의 유기자재는 토양에 부피비율로 0%, 12.5%, 50% 그리고 100%로 혼합하여 처리하였다. 시험 후 유기자재별 혼합비율에 따른 토양 pH는 피트모스와 톱밥이 각각 100%인 처리구가 3.67과 3.73으로 가장 낮았으며, 피트모스 50% 혼합구가 5.30으로 뒤를 이었다. 유기물 함량은 모든 자재가 혼합비율과 같은 경향을 나타냈으며, 이와 같은 경향은 코코피트 혼합구의 치환성 칼리 함량에서도 동일하였다. 그러나 유효인산과 치환성 칼슘과 마그네슘 함량은 혼합비율이 증가할수록 감소하는 경향이었다. 처리별 엽중 질소함량은 피트모스와 코코피트 처리에서 혼합비율이 증가할수록 감소하는 경향을 나타냈으며, 톱밥 처리는 혼합비율에 따른 경향이 나타나지 않았다. 인산 함량은 톱밥과 코코피트 처리에서 혼합비율이 증가할수록 감소하는 경향을 나타냈으나, 칼리 함량은 증가하는 경향이었고, 칼슘과 마그네슘 함량은 유기자재간 혼합비율간 차이가 없었다. 유기자재별 혼합비율에 따른 블루베리의 초장, 경경, 건물중 등의 생육은 피트모스 50%> 피트모스 12.5%> 코코피트 12.5% 순 이었으며, 피트모스 100% 처리구의 생육은 매우 저조하였다. 따라서 블루베리의 토양환경 개선과 우량한 생육을 위한 토양 개선자재로서는 피트모스가 가장 효과적이었음을 확인하였으며, 경제성을 고려한 혼합 비율은 25-50% 범위가 타당하다 보겠다.

• 아시안잔디학회지
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• 제6권1호
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• pp.1-10
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• 1992

This experiment was carried out to investigate the effect of mixing ratio of soil amending materials such as peat. perlite, active carbon, and zeolite on the growth and quality of creeping bentgrass (Agrostis pa1ustris var. Penncross). The results of this experiment were surnrnarized as follows; 1.Nitrogen content of clippings was increased by the treatment of peat and active carbon. hut the other phosphorus, potassium, calcium and magnesium content were increased in addition of,5% to 10% of peat, and 2.5% to 5% of active carbon. 10% of perlite. and 4% of zeolite 2.Fast growth and good quality of bentgrass were showed at the addition of 10% peat. l0% perlite.2.5~% active carbon, and 4% zeolite But over treatment of peat and active carbon induced inhi-bition of root growth and occurrence of disease.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2004년도 춘계학술발표회
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• pp.235-242
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• 2004

For this study, a Peliyagoda area located on a route was selected among many sections of a CKE(Colombo to Katunayake Expressway) route in Sri-Lanka. Its subground consists of a very weak and thick peat soil named amorphous or fibrous peat. All of data, obtained in the design process of soft ground treatment were analyzed to evaluate the settlement characteristics resulted from an embankment load and to present reasonable methods for estimation of secondary compression settlement. For these purposes, soil parameters were used obtainedby field and laboratory tests the settlement analyses were conducted base on the field monitoring results within 20 months. In addition, Reasonable methods were studied to estimate primary consolidation and secondary compression settlement.

• Journal of Microbiology
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• 제38권1호
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• pp.31-35
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• 2000

A suitable packing material for biofiltration of monoaromatic solvent vapors was selected among various types of packing materials such as peat, bark chips, vermiculite, and Hydroballs. A previously isolated strain, Pseudomonas pseudoalcaligenes BTXO2, which could utilize toluene, m-and p-xylene as carbon and energy sources was used as a biofilter inoculum. Four glass biofilters (6 cm dia. x 60 cm) were individually packed with each of the packing materials and solvent vapors were passed through the columns. During three weeks of peat biofilter operation, average removal efficiencies of toluene, m-and p-xylene were 90.4%, 95.3%, and 82.1%, respectively. With the other packings, the efficiencies were in the range of 10.1 to 58.6％ which were significantly lower than those of the peat biofilter. The peat biofilter was continually operated for approximately nine months and the biofilter sustained its degradation activity during the operation period with minimal maintenance. At steady state, average removal rates of toluene, m- and p-xylene vapors were estimated as 14.2, 5.5, and 8.1 g m$\^$-3/ packing h$\^$-1/, respectively.

• The Korean Journal of Ecology
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• 제21권5_1호
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• pp.427-433
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• 1998

The standing crop and net production were estimated in Moojaechi on Mt. Jungjok. By using the decay model of organic carbon, absolute year of bog peat was calculated. Pollen analysis to bog peat revealed vegetational history and climate change around Moojaechi. The time required for amount of the accumulated peat in the bog was estimated in terms of the balance of the accumulation and decay of organic carbon of the deposit peat. Absolute year of the peat surveyed in this study was about 314 years. Pollen of Pinus was predominant in all the pollen zone, Geamineae and Cyperaceae increased in lower pollen zone while Pinus in upper pollen zone. This showes that climate of the past was probably more humid than that of present. In addition, middle pollen zone showed warming trend which is suggested by high pollen concentration of Quercus, Juglans, Carpinus and Corylus. It suggests that overall environment and vegetation were changed from warmer and more humid to dry condition in Moojaechi and it is considered as the course of boggy ground formation by retrogressive successions.

• 한국환경보건학회지
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• 제33권5호
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• pp.462-469
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• 2007

Isolation and application of oil-degradation microbes from the oil-contaminated soil and the determination of optimal operation conditions about the peat moss, the addition for the oil-biodegradation. After all experiments, we have acquired three important conclusions: First, we found out the 4 microbes, Pseudomonas fluorescens, Pseudomonas aeruinosa, Kurtia sp., Bacillus ceres, with excellent capability for the oil-degradation; Second, the optimal operating conditions of the peat moss for TPH treatment were pH $7{\sim}8$, temperature $25{\sim}30^{\circ}C$, water content 20%, mixing 2 times/ day, addition volume 2%; Third, in case of the application to the oil-contaminated soil with 4 mixed microbes, the removal efficiency of TPH was increased from 54% to 83% in oil-contaminated soil and from 65% to 85% in oil-contaminated soil with the peat moss.

• Geomechanics and Engineering
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• 제2권4호
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• pp.321-335
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• 2010

This article describes a laboratory research on stabilizing tropical peat using ordinary Portland cement (OPC) as a binding agent, and polypropylene and steel fibres as chemically inert additives. California bearing ratio (CBR) and unconfined compressive strength (UCS) tests were carried out to evaluate the increase in the strength of the stabilized samples compacted at their optimum moisture contents and air cured for up to 90 days. The results show that the UCS values of stabilized peat samples increased by as high as 748.8% by using OPC (5%), polypropylene fibres (0.15%), and steel fibres (2%). The CBR values of the samples stabilized with OPC (5%), polypropylene fibres (0.15%), and steel fibres (4%) showed an increase of as high as 122.7%. The stabilized samples showed a shrinkage in volume upon air curing and this shrinkage was measured by an index called, volume shrinkage index (VSI). The highest VSI recorded was 36.19% for peat without any additives; and the minimum was 0% for the sample containing 30% OPC, 0.15% polypropylene fibres and 2% steel fibres. The technique of stabilizing peat with OPC, polypropylene and fibres, coupled with air curing, appears to be cost-effective compared with other frequently used techniques.

• 대한한의학회지
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• 제42권4호
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• pp.197-207
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• 2021

Objectives: The purpose of this study was to confirm effect of reducing inflammation of Coptis chinensis extract-ceramide complex through the endocannabinoid system (ECS) control in atopic dermatitis. Methods: 8-week-old ICR mice were divided into normal group (Ctrl), lipid barrier elimination group (ADE), palmitoylethanolamide treated group after lipid barrier elimination (PEAT), and Coptis chinensis extract-ceramide complex applied group after lipid barrier elimination (CRA). After inducing atopic dermatitis, cannabinoid receptor (CB) 1, CB2, CD68, p-I𝜅B, iNOS, substance P and serotonin were observed to confirm the regulation of the ECS, macrophage activity and mast cell activity. Results: CB1 and CB2 showed higher positive reactions in the CRA than in the ADE and PEAT. CD68, p-I𝜅B and iNOS showed higher positive reaction in the ADE, PEAT and CRA than in the Ctrl, but the increase in the positive reaction was lower in the CEA compared to the ADE and PEAT. Substance P and serotonin showed higher positive reaction in the ADE, PEAT and CRA than in the Ctrl, but the increase in the positive reaction was lower in the CEA compared to the ADE and PEAT. Conclusions: The effects of Coptis chinensis extract -ceramide complex were confirmed on the regulation of the ECS, macrophage activity and mast cell activity.