• 한국농공학회:학술대회논문집
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• 한국농공학회 2005년도 학술발표논문집
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• pp.485-489
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• 2005

Fallow paddy has been increased in disadvantageous farming condition area because of importation of foreign agricultural products, labor cost and the imbalance between farming cost and agricultural products price since 1990. The fallow paddy that has gradually increased needs to be prevented from the devastation by weed breeding for re-cultivation. In this study, two fallow paddies that manage with different water depth from the experimental field were selected for observation, and analysis of water quality, water balance and plant body change. The managed fallow paddy was more effective in water quality purification and plants growth control than non-managed fallow paddy. And the fallow paddy managed with a some degree water depth was the most effective field on weed control.

• 약학회지
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• 제34권1호
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• pp.34-39
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• 1990

The alkaloidal constituents of Commelina communis(Commelinaceae) were investigated. From the ether soluble alkaloidal fraction, three ${\beta}-carboline$ type alkaloids were isolated by chromatographic purification process. Their chemical structures were identified as $1-carbomethoxy-{\beta}-carboline$, norharman and harman from the physicochemical data, which were newly isolated from this plant.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.4-5
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• 2018

The water proofing sheet of synthetic polymer applies to the purification plant, the wastewater treatment center, the low waterway, the dosing tanks, etc, and when we construct these, we apply the dual waterproof by means of hot air staking welder or extruder. However, the experts skilled in the hot air welding or extruder does not use them, it can be a quality problem. Therefore, in this study, it is the purpose to verify whether the semi-automatic hot air staking welder and automatic extruder that can construct the waterproof sheet is possible in field even if it is not a professional specialist.

• 도시과학
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• 제8권2호
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• pp.35-39
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• 2019

With the rapid progress of society and economic growth, more and more factories are put into construction, although to a certain extent to promote the development of our country's economy, but the waste gas and waste water produce also harm the environment.Among them, air pollution causes great damage to the environment and harms human health.In order to protect people's safety and health, people began to look for some measures to control air pollution, one of the most effective way is to plant more green plants, using plants for air purification.

• 약학회지
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• 제30권1호
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• pp.1-7
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• 1986

The alkaloid components in the root of Codonopsis lanceolata were studied. From the ether soluble alkaloid fraction, four $\beta$-carboline alkaloids were isolated in crystalline state by chromatographic purification process; comp. I mp $178^{\circ}$, isolated yield 4.5$\times$$10^{-5}%$, comp. II mp $166^{\circ}$, 6.0$\times$$10^{-5}%$, comp. III mp $164^{\circ}$, 1.8$\times$$10^{-4}%$ and comp. IV mp $197^{\circ}$, 3.5$\times$$10^{-5}%$. They were identified by spectral analysis and by total synthesis as being a new component $N_9$-formylharman, and already known components in other plant 1-carbomethoxy-$\beta$-carboline, perlolyrine and norharman.

• 한국자원리싸이클링학회:학술대회논문집
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• 한국자원리싸이클링학회 2006년도 춘계임시총회 및 제27회 학술발표대회
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• pp.124-128
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• 2006

• Natural Product Sciences
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• 제18권3호
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• pp.183-189
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• 2012

It is well known that inflammation is associated with neurodegenerative disorders, including Alzheimer' disease, Parkinson's disease and ischemia. Nitric oxide (NO), a pro-inflammatory mediator, is produced by inducible NO synthase (iNOS) in microglia as well as macrophages and appears to account for neurodegeneration. In this study, we aimed to isolate NO inhibitors from Pyrus pyrifolia by activity guided purification. As a result, we identified daucosterol and ${\beta}$-sitosterol, which have not been isolated from this plant before. This article also describes NO inhibitory activities of the methanol extract of Pyrus pyrifolia fruit and the isolated compounds from this, which are lupeol, betulin, betulinic acid, ${\beta}$-sitosterol and daucosterol, in LPS-activated RAW 264.7 and BV2 cell lines. Western blot analysis was performed to clarify the underlying mechanism of NO inhibition in the two cell lines.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2001년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.146-147
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• 2001

Lectins or carbohydrate-binding proteins are proteins of non-immune origin, which is able to agglutinate cells, and precipitate polysaccharides and glycoconjugates (Goldstein et al., 1980). Lectins with diverse physiological roles are widely distributed to the various plant, microorganisms, invertebrates and vertebrates. The ubiquitous occurrence of lectins in nature and their ability to recognize complementary sugars provided a stimulus for the continuous research for their biochemical properties and physiological functions (Raz and Lotan, 1987). (omitted)

• 대한화학회지
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• 제67권2호
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• pp.129-136
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• 2023

Osteoarthritis is to the abnormality of the inflammatory response of joint tissue caused by various causes such as aging, and muscle loss. In this study, the activity in joint inflammation was verified using SKBE, a plant extract, and the expression levels of arthritis-inducing proteins including MMP-1, MMP-3, MMP-13, and collagen type II in vitro were compared and analyzed. Furthermore, we synthesized α-spinasterol, an active ingredient of SKBE, by the previously reported synthesis method and these findings could provide a new starting point for the development of treatments for osteoarthritis.

• 한국환경과학회지
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• 제17권10호
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• pp.1129-1137
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• 2008

We investigated the ecological characteristics of reed populations growing in Korea and tried to select reed populations showing better growth patterns in waste landfill leachate. To examine the growth characteristics, 14 reed populations from various habitats were collected. Four reed populations were from inland reclaimed habitats, 4 reed populations from brackish or salt marsh habitats, and 6 reed populations from fresh water habitats. Total plant biomass after the treatment with landfill leachate showed that Daebudo and Nanjido reed populations had the higher biomass with 3755 g DW/pot and 3305 g DW/pot, respectively. Reed populations being sampled from the higher salinity and landfill habitats had relatively higher total biomass than that of other reed populations. Especially reed populations from landfill habitats showed higher biomass. Reed populations from Songjiho and Daebudo, which were believed to have tolerance to salt stress, also showed good growth patterns. Population from the fresh water habitats exhibited relatively lower tolerance to leachate treatment compared to others. From the results, we could conclude that reed populations from Nanjido and Daebudo with higher biomass and better salt tolerance were able to good candidates for purification of waste landfill leachate.