• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2002년도 추계학술발표회요약집
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• pp.389-389
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• 2002

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2009년도 심포지엄 및 춘계학술발표회
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• pp.295-296
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• 2009

• 대한동의생리학회:학술대회논문집
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• 대한동의생리학회 2005년도 정기총회 및 동계학술대회
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• pp.27-27
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• 2005

• Journal of Ecology and Environment
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• 제32권3호
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• pp.149-158
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• 2009

American sycamore seedlings were grown in chambers with two different ozone concentrations ($O_3$-free air and air with additional $O_3$) for 45 days. Both the control and the $O_3$ chambers included non-fertilized and fertilized plants. After 18 days of $O_3$ fumigation, seedlings were placed in a clean chamber for 27 days. Seedlings under ozone fumigation showed a significant decrease in pigment contents and photosynthetic activity, and a significant increase in lipid peroxidation. Fertilization enhanced physiological damage such as the inhibition of photosynthetic activity and the increase of lipid peroxidation under ozone fumigation. During the recovery phase, the physiological damage level of seedlings increased with ozone fumigation. In addition, physiological damage was observed in the fertilized seedlings. Superoxide dismutase (SOD) and glutathione reductase (GR) activities of $O_3$-treated seedlings increased up to 33.8% and 16.3% in the fertilized plants. The increase of SOD activity was higher in the fertilized plants than in the non-fertilized plants. Negative effects of ozone treatment were observed in the biomass of the leaves and the total dry weight of the fertilized sycamore seedlings. The $O_3$-treated seedlings decreased in stem, root and total dry weight, and the loss of biomass was statistically significant in the fertilized plants. In conclusion, physiological disturbance under normal nutrient conditions has an effect on growth response. In contrast, in conditions of energy shortage, although stress represents a physiological inhibition, it does not seem to affect the growth response.

• Journal of Ginseng Research
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• 제42권2호
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• pp.175-182
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• 2018

Background: The impact of fungicide azoxystrobin, applied as foliar spray, on the physiological and biochemical indices and ginsenoside contents of ginseng was studied in ginseng (Panax ginseng Mey. cv. "Ermaya") under natural environmental conditions. Different concentrations of 25% azoxystrobin SC (150 g a.i./ha and 225 g a.i./ha) on ginseng plants were sprayed three times, and the changes in physiological and biochemical indices and ginsenoside contents of ginseng leaves were tested. Methods: Physiological and biochemical indices were measured using a spectrophotometer (Shimadzu UV-2450). Every index was determined three times per replication. Extracts of ginsenosides were analyzed by HPLC (Shimadzu LC20-AB) utilizing a GL-Wondasil $C_{18}$ column. Results: Chlorophyll and soluble protein contents were significantly (p = 0.05) increased compared with the control by the application of azoxystrobin. Additionally, activities of superoxide dismutase, catalase, ascorbate peroxidase, peroxidase, and ginsenoside contents in azoxystrobin-treated plants were improved, and malondialdehyde content and $O_2^-$ contents were reduced effectively. Azoxystrobin treatments to ginseng plants at all growth stages suggested that the azoxystrobin-induced delay of senescence was due to an enhanced antioxidant enzyme activity protecting the plants from harmful active oxygen species. When the dose of azoxystrobin was 225 g a.i./ha, the effect was more significant. Conclusion: This work suggested that azoxystrobin played a role in delaying senescence by changing physiological and biochemical indices and improving ginsenoside contents in ginseng leaves.

• 한국지능시스템학회논문지
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• 제17권3호
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• pp.322-327
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• 2007

심리학 분야의 연구자들은 Electroencephalographic(EEG)을 오래전부터 인간 두뇌의 활동을 측정 기록하는데 사용하였다. 과학이 발달함에 따라 점차적으로 인간의 두뇌에서 감정을 조절하는 기본적인 영역들이 밝혀지고 있다. 그래서 인간의 감정을 조절하는 인간의 두뇌 활동 영역들을 EEG를 이용하여 측정하였다. 손짓이나 고개의 움직임은 사람들 사이에 대화를 위한 인간의 몸 언어로 사용된다. 그리고 그것들의 인식은 컴퓨터와 인간 사이에 유용한 회화수단으로 매우 중요하다. 몸짓에 관한 연구들은 주로 영상을 통한 인식 방법이 주를 이루고 있다. 많은 연구자들의 기존 연구에서는 생체신호나 몸짓중 한 가지만을 이용하여 감정인식 방법 연구를 하였다. 본 논문에서는 EEG 신호와 몸짓을 같이 사용해서 사람의 감정을 인식하였다. 그리고 인식의 대상자를 운전자라는 특정 대상자를 설정하고 실험을 하였다. 실험 결과 생체신호와 몸짓을 같이 사용한 실점의 인식률이 둘 중 한 가지만을 사용한 것보다 높은 인식률을 보였다. 생체신호와 몸짓들의 특징 신호들은 강화학습의 개념을 이용한 IFS(Interactive Feature Selection)를 이용하여 특징 선택을 하였다.

• 한국산림과학회지
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• 제99권5호
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• pp.711-719
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• 2010

We investigated physiological responses and phytoextraction ability of Pinus thunbergii in cadmium contaminated soil as part of our efforts in identifying plant materials for the restoration and revegetation of forest soil contaminated by heavy metals. Thirty seedlings (ten per treatment) were assigned to three treatments (control, 0.3 and 0.6 mM $CdSO_4$ solution) at first year experiment. At second year, ten seedlings per treatment treated with Cd during the first year experiment were divided by two groups (no Cd-treated and consecutive Cd-treated group). At first experiment, photosynthetic pigment content, and superoxide dismutase (SOD) and glutathione reductase (GR) activities have significantly reduced by Cd application, and the reduction rate was increased much higher as the rate of Cd application increased. On the other hand, thiol and malondialdehyde (MDA) content were significantly increased at the application of 0.6 mM of Cd. At the second year experiment, a general increase in chlorophyll and carotenoid content was observed with Cd treatment while SOD and GR activities showed a relative reduction compared to the control. Similar to the first year measurement, thiol and MDA contents also increased considerably due to Cd treatment. At harvest, dry matter was significantly reduced by Cd treatment especially at the rate of 0.6 mM Cd, but dry yield of P. thunbergii treated with 0.3 mM Cd was less affected and it was comparable with the control seedling. Cadmium concentration in seedling tissues increased with increasing Cd application rate while Cd uptake was higher in seedlings supplied with 0.3 mM Cd, which could be ascribed to their high dry matter. Overall, our study has demonstrated the unique physiological response of P. thunbergii to Cd-prolonged exposure by showing that the changes in photosynthetic pigment content and antioxidative enzyme activities were dependent on the concentration and duration of treatment. In addition, our results have demonstrated the potential of P. thunbergii to withstand up to 0.3 mM Cd (equivalent to cumulative Cd concentration of 134.4 to 268 mg $kg^{-1}$) without showing growth reduction, hence it might be used for phytoremediation of Cd contaminated areas.

• 한국자원식물학회지
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• 제24권2호
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• pp.150-159
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• 2011

This study was conducted to gather the basic data on the alpine leek (Allium victorialis) for the expand of consumption and the production of its manufactured goods. Amino acid content in alpine leek leaves and various physiological activities were examined. Seventeen component amino acids and 38 free amino acids from alpine leek leaves were analyzed, and the total contents were 2,693.28 mg/100g for component amino acids and 535.39 mg/100g for free amino acids. Total phenolic compounds in the leaves of alpine leek showed the highest level from the methanol extract (37.7 mg/l), and followed by ethanol extract (31.9 mg/l) and hot water extract (25.4 mg/l). Total flavonoid contents in 1,000 mg/l extract was the highest in the methanol extract (22.2 mg/l). DPPH radical scavenging activity at 1,000 mg/l extract was high in the order of ethanol extract (51.6%), methanol extract (47.3%) and hot water extract (37.2%). nitrite radical scavenging activity Methanol extract from Allium victorialis leaves was the highest nitrite radical scavenging activity (79.5%). Hyperplasia suppression of lung cancer cells (Calu-6) and gastric cancer cells (SNU-601) by the methanol extract from the bulb of alpine leek were 99.9% in the extracting concentration of over 200 mg/l. No significant difference in antimicrobial activity among the 3 different solvents and extract concentrations was observed, and the inhibition zones against the gram-positive and negative microorganisms were ranged from 8.23 to 10.15 mm. It was concluded that physiological activities in a human body could be improved by the intake of alpine leek as a pharmaceutical material, and that it would be useful for the prevention of health risk such as lung and gastric cancers.

• 대한본초학회지
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• 제20권3호
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• pp.1-7
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• 2005

Objectives : In this study, Folium Perillae were examined the possibility to apply as the cosmetics natural materials. Methods : Normal skin softener containing Folium Perillae extracts was manufactured and then its physiological activities function was experimented on. And emollient lotion containing Folium Perillae extracts was manufactured and then it was left under the condition of $-10^{\circ}C,\;0^{\circ}C$, room temperature and $37^{\circ}C$ for a month. Then its stability and safety were tested. Results : The physiological activities function of the normal skin softener was almost same with the electron donating ability, SOD like activity and xanthine oxidase inhibitory effect of Folium Perillae extracts. To find the changes of emollient lotion containing Folium Perillae extracts, the emollient lotion was left under the condition of $-10^{\circ}C,\;0^{\circ}C$, room temperature and $37^{\circ}C$ for a month. Then, when the emollient lotion was observed with the naked eye, pH, viscosity and particle diameter were measured, its changes were not nearly found. Futhermore, as a result of doing patch test to identify the safety of emollient lotion containing Folium Perillae extracts, there was no stimulus on skin. Conclusions : From the above results, it was expected that the physiological activities of Folium Perillae extracts can be maintained when cosmetics containing Folium Perillae extracts are manufactured. And it was proved that Folium Perillae extracts didn't affect the change of cosmetic when they were applied to cosmetic materials. And it was concluded that emollient lotion containing Folium Perillae extracts was safe for skin.

• 한국식품과학회지
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• 제53권6호
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• pp.761-767
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• 2021

고부가가치 딸기 식초를 개발하고 이를 다양한 식품에 활용하기 위해 딸기 발효에 적합한 초산균을 선발하여 딸기 식초를 제조하고 품질 특성 및 생리활성을 분석하였다. A. pasteurianus 균주를 이용하여 딸기 식초를 제조하여 균주별 발효 특성을 조사한 결과 SRCM 60009 균주로 발효 후 산도가 가장 높은 결과를 보여 A. pasteurianus SRCM 60009 균주가 딸기 식초용 발효균주로 최종 선발되었다. SRCM 60009 균주로 제조한 딸기 발효식초의 품질특성은 발효 9일차에 pH 2.86, 산도 4.20%, 생균수 8.56 log CFU/mL를 나타내었다. 발효기간에 따라 딸기 식초의 유리당은 감소하는 경향을 보였고, 유기산은 증가하는 경향을 나타내었다. 딸기 식초의 생리활성은 α-glucosidase 저해(AGI) 활성, pancreatic lipase 저해(PLI) 활성, angiotensin converting enzyme I (ACE) 저해활성을 분석하였다. 딸기 식초는 65.13%의 AGI 활성을 보였으나, 딸기 착즙액을 발효하지 않은 대조구에서는 55.18%의 활성을 나타내었다. PLI 활성을 확인한 결과 딸기 식초는 75.40%, 대조구는 35.79%의 활성을 보였고, ACE 저해 활성은 딸기식초는 70.58%, 대조구는 46.40%의 활성을 보였으며, 그 결과는 모두 유의차가 있는 것으로 확인되었다. 이와 같이 딸기를 발효하여 식초로 이용함으로써 딸기를 발효하지 않고 섭취하는 것에 보다 다양한 기능성을 확인할 수 있었으며 동시에 전통 발효식품인 식초에 딸기의 맛과 향이 더해진 딸기 식초를 제조하였다. 이를 토대로 향후 다양한 소비자들의 기호를 충족시킬 수 있는 발효식초 및 발효식초를 활용한 응용제품의 개발이 필요하며, 이에 따른 추가적인 연구가 지속되어야 할 것 으로 사료된다.