• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2008.04a
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• pp.123-126
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• 2008

• Proceedings of the Korean Society of Applied Pharmacology
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• 1994.04a
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• pp.285-285
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• 1994

Naproxen을 개의 정맥내 투여하였을때 뇨량의 감소와 더불어 삼투질제거율(Cosm), 뇨중 $Na^{+}$과 $K^{+}$의 배설율( $E_{Na}$ , $E_{k}$ )의 감소와 신세뇨관에서의 $Na^{+}$과 $K^{+}$의 재흡수율( $R_{Na}$ , $R_{k}$ )과 K/Na비의 증대를 나타내었으며 신혈류량(RPF)이 감소하였다. 한쪽 신동맥내에 naproxen을 투여하였을때 투여신(실험신)에서의 이뇨작용과 대조신에서의 항이뇨작용을 나타내었다. 경동맥에 naproxen을 투여하였을때도 뚜렷한 항이뇨작용을 나타내었다. 이와같은 두경우에서의 항이뇨 작용시의 신기능변화는 정맥내 naproxen의 경우와 같은 양상을 나타내었다. 경동맥내의 naproxen의 항이뇨작용은 신신경 제거에 의하여 영향을 받지 않았으나 정맥내로의 arachidonic acid나 indomethacin의 전처리에 의하여서는 나타나지 않았다. 경동맥내의 naproxen은 정맥내의 spironolactone의 이뇨작용을, 정맥내의 spironolactone은 경동맥내의 naproxen의 항이뇨작용을 억제하였다. 이상의 결과로 보아 naproxen은 중추성 항이뇨작용과 $Na^{+}$저류를 나타내며 이는 prostaglasdin의 합성억제와 aldosterone양 작용에 의하는 것으로 사료된다.

• Proceedings of the Korean Society Of Semiconductor Equipment Technology
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• 2007.06a
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• pp.29-33
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• 2007

최근의 반도체/display 관련 생산장비 및 검사장비들이 대형화/고속화 되어감에 따라 과거 stepping 방식에서 scanning 방식으로 전환된 장비들이 공정 상에 발생하는 과도응답 형태의 진동으로 인하여 제품 수율의 저하와 생산 효율의 감소를 가져오고 있다. 이러한 과도응답의 진동은 장비 자체의 가진력으로부터 발생하므로 건물 구조의 동강성 증대 방안이나 고효율의 방진 시스템 적용으로는 한계를 가지고 있다. 본 논문에서는 smart 재료인 MR유체를 이용한 MR damper를 이용하여 방진효율을 유지하면서 과도응답의 진동을 제어하기 위한 반 능동제어 방식의 방진/제진 시스템을 구성하였으며, 시스템 해석과 제어 시스템의 구성을 위하여 6자유도 강체 진동에 대한 운동방정식을 고려하였다.

• Microbiology and Biotechnology Letters
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• v.18 no.3
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• pp.280-285
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• 1990

Biotransformation of progesterone to 11 $\alpha$ -hydroxyprogesterone by growing cells of Rhizopus nigricans was investigated. As the concentration of progesterone increased, the specific growth rate of R. nigricans decreased linearly, and consequently the conversion yield lowered. The hyphae of the microorganism were observed to become thicker, shorter, and more densely branched at high concentrations of progesterone. In order to improve the process productivity, biotransformation was conducted with continuous addition of progesterone. When the substrate was added continuously at a rate of 0.86 g/hr for 30 hrs, overall conversion yield reached upto 56% while a single addition of the same amount of progesterone yielded about 40% eonversion. When additional feeding of glucose was carried out upon its depletion, an improved br'oconversion yield upto 68% was obtained.

• Journal of the Korean Wood Science and Technology
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• v.18 no.4
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• pp.3-8
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• 1990

근년에 전세계에서 목재건조 기술의 주요 관심사는 첫째 건조응력발생과 건조결함 예방이고, 다음은 건조실 제어시스템, 건조스케줄개발, 목재수분이동, 함수율측정, 새로운 건조방법개발, 건조에너지 절약, 경제성분석, 태양열건조, 수학적모델링, 건조전처리, 마이크로웨이브 건조, 건조실 구성과 정비, 건조종기결정, 감압건조, 공정제어와 콘다숀닝, 제습건조, 목재치수 안정 및 고온건조 등의 순위이다. 건조중 발생하는 결함들은 건조경비 증가에 절대적인 영향을 끼칠 수 있다. 예를 들면, 가구공장에 있어서 건조재의 품등 향상에 따른 1%의 수율 증대 효과는 가구 부품 1000 보오드피트당 23$의 생산비를 절감할 수 있고, 활엽수재의 천연건조시 수반되는 건조손상은 생재의 23%를 초과할 수 있다. 본 총설이 각종 문제를 개선하고 건조경비를 절감하는데 기여할 수 있기를 바라며, 또한 단판, 칩 또는 땔감과 같은 비제재품에 관한 건조에 관한것은 제외하였다.

• 한국약용작물학회:학술대회논문집
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• 2008.05a
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• pp.184-185
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• 2008

• KOREAN JOURNAL OF CROP SCIENCE
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• v.25 no.2
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• pp.76-81
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• 1980

Root yield, number of missing and diseased plant in each line were investigated in various ginseng farms. Root yield per unit area was negatively correlated to missing percentage. Missing percentage showed significant positive correlation with diseased rate. Among lines yield was significantly different in most fields while missing rate was not, indicating that yield of each line is affected by present shading method but disease occurrence is not. Thus there are two ways of yield increase, shading improvement and disease control.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.5
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• pp.581-591
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• 2017

The purpose of this study was to examine the biological activities of gamma-irradiated Teucrium veronicoides. In photostimulated luminescence analysis, non-irradiated sample showed lower than 700 photon counts (PCs), whereas irradiated (5 and 10 kGy) samples showed higher than 700 PCs. The thermoluminescence ratio of non-irradiated samples was less than 0.1, whereas the values of irradiated samples were greater than 0.1. Electron spin resonance analysis was performed confirmed for irradiation identification. The total phenolic contents of hot-water and 50% ethanol extracts were higher than those values after irradiation at 10 kGy. Regarding 1,1-diphenyl-2-picrylhydrazyl radical inhibitory activity, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activity, antioxidant protection factor, thiobarbituric acid reactive substance inhibitory activity as antioxidant test and xanthine oxidase inhibitory activity, the effect of gamma irradiation had on significant effects. On the other hand, ${\alpha}-amylase$ inhibitory activity of 10 kGy-irradiated hot-water extract was 23.6% higher than that of the non-irradiated sample. Thus, gamma irradiation could be used for the long-term storage of Teucrium veronicoides.

• Food Science and Preservation
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• v.17 no.4
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• pp.507-512
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• 2010

The effects of pretreatment by freezing on juice expression and drying characteristics of Prunus mume fruit were investigated. Fresh fruit slices were frozen at $-20^{\circ}C$, thawed, and then either pressed (to yield juice) or dried. Fresh fruit slices were used as controls. Both juice yield and drying rate were higher when pre-frozen fruit was tested, compared to fresh fruit. The L and b color values were lower in the juice and dried powder of pre-frozen compared to fresh fruit. The a color value was higher in juice and powder prepared from pre-frozen fruit compared to fresh fruit. There was no significant difference in free sugar or organic acid content between juices and powders from pre-frozen and fresh fruit. None of soluble solid content, titratable acidity, or juice pH was affected by freezing pretreatment. The results suggest that such pretreatment may be useful to increase juice yield and drying rate. However, browning of juice and powder may be elevated.

• Journal of Korean Society of Forest Science
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• v.98 no.3
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• pp.319-323
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• 2009

One of the limitation of wood as building material is its flammability. The purpose of this paper is to examine the combustion properties of the pinus rigida and castanea savita which are grown in Korea and meet the desirable characteristics for use of construction materials. The cone calorimeter (ISO 5660-1) was used to determine the heat release rate (HRR) and fire smoke index, as well as CO and $CO_2$ production and smoke obscuration. The $HRR_{mean}$ of the castanea savita at $50kW/m^2$ was $160.7kW/m^2$ in comparison with $150.7kW/m^2$ for the pinus rigida. Castanea savita showed an increase of retardant properties attributed to char formation compared with that of pinus rigida. The castanea savita has high $CO_{peak}$ yield and high CO/$CO_2$ yield compared with that of pinus rigida.