• 감성과학
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• 제14권4호
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• pp.663-674
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• 2011

점선의 추가와 주변 자극의 추가가 caf$\grave{e}$ wall 착시에서 지각된 착시량과 착시에 대한 확신도에 미치는 효과를 알아보기 위해 두 편의 실험을 수행하였다. 실험 1에서는 흰 색과 검은 색 벽돌이 나열된 세 줄의 벽돌층의 수평 경계에 흰색 벽돌과 검은색 벽돌의 중간 밝기를 가지는 회색 선분(모르타르:mortar)과 벽돌과 반대 밝기의 점선을 추가하였을 때 착시에 미치는 효과를 알아보았다. 실험 2에서는 실험 1에서 사용한 자극에 벽돌 층을 추가하여 주변자극의 추가에 따라 caf$\grave{e}$ wall 착시가 어떻게 달라지는지 살펴보았다. 실험 결과 회색 경계선에 점선을 추가하는 것은 착시 지각의 확신도에는 가산적으로 영향을 미치는 것으로 나타났으나 지각된 착시량에서는 가산적 영향이 나타나지 않았다. 반면 벽돌 층의 추가는 지각된 착시량에는 영향을 미쳤지만 착시지각의 확신도에는 영향을 미치지 않는 것으로 나타났다. 논의에서는 이러한 결과가 시각피질의 방위 선별적 세포의 반응과 관련이 있을 가능성에 대해 제안하였다.

• Asian-Australasian Journal of Animal Sciences
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• 제16권12호
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• pp.1809-1815
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• 2003

A $3{\times}4$ (chromium and L-carnitine) experiment was designed to investigate the single and interactive effects of adding yeast Cr and L-carnitine to corn-soybean meal diets on lipid metabolism of broiler chickens. Four hundred and eighty one-day-old avian chickens were randomly allocated to 12 treatments of 40 each for 7 weeks. Levels of adding Cr were 0, 400, $600{\mu}g/kg$ and those of Lcarnitine was 0, 30, 50, 100 mg/kg, respectively. The result showed that adding $600{\mu}g/kg$ Cr or 100 mg/kg L-carnitine alone had better regulative effects on fat and cholesterol metabolism than lower adding levels. Effects were more significant at the end of the experiment. There were significantly interactive effects between Cr and L-carnitine on triaclyglycerol, whole cholesterol, HDL, dissociating FFA, and blood glucose, cholesterol and triaclyglycerol of liver, and cholesterol of chest muscle at the end of experiment (p=0.0001-0.0315). But Cr or L-carnitine had no significant effect on growth performance of broiler chickens (p>0.05).

• 한국환경보건학회지
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• 제12권1호
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• pp.47-54
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• 1986

The purpose of the study is to determine the effects of sodium alginate on the suppression of organ accumulation of heavy metals were tested by mice. The seventy mice were divided into the control group and the experimental groups. The mice of cadmium group were subdivided into three groups by dose of 10 ppm cadmium group, adding 1% sodium alginate to the diets contaminated with 10 ppm cadmium group and adding 10% sodium alginate to the diets contaminated with 10 ppm cadmium group. The mice of copper group were subdivided into three groups by dose of 10 ppm copper group, adding 1% sodium alginate to the diets contaminated with 10 ppm copper group, and adding 10% sodium alginate to the diets contaminated with 10 ppm copper group. After the series of feeding of twenty-one days, the mice were killed and examined. Organs and feces were removed and analyzed for cadmium and copper amounts. The results obtained were as follows 1. As for average body weight gains, those of control group mice were the highest than heavy metal group and those of adding 10% sodium alginate to the diets contaminated with 10 ppm copper group the lowest. 2. The amount of cadmium accumulated in liver and kidney was higher than blood. The amount of cadmium in organs was higher in cadmium group than adding sodium alginate to the diets contaminated with cadmium group. 3. The amount of copper in liver was the highest, and that of copper in blood was the lowest. 4. The excretion of heavy metals was promotioned by adding 10% sodium alginate to the diets contaminated with 10 ppm heavy metal. ( P < 0.05 ).

• 한국가구학회지
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• 제19권6호
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• pp.452-459
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• 2008

The compressed injection yellow ocher soil is the process-technology by drying the product through sunshine, not by firing like pottery and ceramic ware. It is the technology of development being able to achieve the far infrared ray and humidity adjustment by adding recycling paper, Korean paper and bamboo salt, and it corresponds with the construction enforcement ordinance 2007 as an interior-finishing product which is fire-resistant. In case that the yellow ocher soil would be used as lighting device and interior-finishing material and decoration, it could contribute to an improvement of National Health by avoiding the sick house syndrome and adding humidity adjustment, and it has more efficient economic effect due to using recycle-available additives. Through such developments of the yellow ocher soil products the domestic market of lighting device and construction material can be advanced and the replacement effect of imported goods & also export effect can be expected accordingly.

• 한국식품과학회지
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• 제27권5호
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• pp.773-775
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• 1995

The effect of alum$(Al{\cdot}K(SO_4)_2{\cdot}12H_{2}O)$ on the activity of raw starch-digesting enzyme produced by alkali-tolerant Bacillus sp. was investigated. In adding alum of 0.5%(w/w), activities of raw starch-digesting enzyme on the gelatinized and raw rice starches have not been inhibited. In case of adding alum of 5%(w/w), competitive and uncompetitive inhibition were observed for the gelatinized and raw rice starches, respectively. The inhibitory effect on the raw starch was much higher than that on the gelatinized starch.

• Journal of Microbiology
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• 제33권4호
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• pp.302-306
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• 1995

E. coli was tested for their ability to uptake cadmium intracellularly, and the effect of zinc and calcium on cadmium toxicity to E. coli was observed. In addition, the effect of zinc and calcium on the uptake of cadimium was also studied. This study showed that living E. coli cells took up more cadmium than the dead cells. E. coli in the log phase uptake cadimiumm more actively than E. coli in the stationary phase. These results suggested that there may be metabolic reactions or compounds which encourage the uptake of cadimium. This study also showed that cadimium was sequestered by cell components of which molecular weight is about 30,000. Adding of zinc and calcium chloride reduced cadmium toxicity in E. coli and encouraged intracellular uptake by E coli. However adding of heavy metal solutions helped the microorganisms to adsorb more cadmium. Extremely high or low concentrations of zinc, however, did not affect cell viability.

• 한국약용작물학회지
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• 제19권3호
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• pp.191-197
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• 2011

In this study, we investigated antioxidant activities and whitening effects of Acer mono sap by encapsulation of nanoparticles. Acer mono sap was through ultra high pressure process and then encapsulated by lecithin. Nano-encapsulated The nanoparticles of Acer mono sap showed highest free radical scavengering effect as 89.7% in adding sample (1.0 mg/ml), compared to sap of non-encapsulation. It was showed strong inhibition effect on melanin production test by Clone M-3 cells as 47.8%. High inhibitory of tyrosinase was also measured as 85.8% by adding lecithin nano-particle of 1.0 mg/ml. The nano-particles also showed 14.8% of low cytotoxicity against human normal fibroblast cells in adding 1.0 mg/ml of the highest concentration. These results indicate that Acer mono sap may be a source of cosmetic agents capable of improving whitening effect and antioxidant activites.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 봄 학술논문 발표대회
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• pp.187-188
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• 2020

Recently, some researchers have found, as a part of the development of new materials, the rice straw ash can also be used as a pozzolanic material for concrete considering similar chemical properties of rice straw ash to that of rice husk ash. Therefore, the purpose of this study was to improve compressive strength of concrete adding agriculture by-product. Compressive strength were tested on rice straw ashes at 600℃ to identify improving strength effect.

• 대한가정학회지
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• 제18권1호
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• pp.41-46
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• 1980

In order to verify to what extent the rancidity of the soybean oil is occurred and how the various metal ions effect on the rancidity-as a result of applying heat to the soybean oil-the followings are obtained through experiments : 1. From analyzing the refractive index of soybean oil, The results are: the specific gravity-0.925 refractive index-1.475, saponification value-190, acetyl value-5.0, iodine value-120, peroxide value-5.0. 2. The degree of expediting rancidity take the following order : $Cu^{++}$/$Fe^{++}$/$Cr^{++}$/$Zn^{++}$/$Ni^{++}$/$Al^{+++}$. 3. The degree of expediting rancidity of $Cu^{++}$and $Fe^{++}$ is showed the abrubt increase of peroxide value in accordance with the increase of densidity. The most abrubt increase of peroxide show when the duration of heating reaches to the range between 20 minutes and 30 minutes. After heating for 60 minutes no definite variation is showed. 4. The degree of rancidity in heating the soybean oil added $Cu^{++}$, Fe and BHA shows the decrease of peroxide value by 2, 3 after adding $Cu^{++}$0.5 ppm. and heating for 30 minutes. As the result of measuring the value of peroxide after adding $Cu^{++}$ by 1.0 ppm and BHA by 0.01% and heating, peroxide shows the decrease by 7.8 when adding anti-oxidant. $Fe^{++}$ as well as $Cu^{++}$ shows that BHA prevents the metal ions from the expedition of rancidity.

• Journal of the Korean Wood Science and Technology
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• 제45권2호
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• pp.223-231
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• 2017

This work was conducted to investigate on the effect of urea-formaldehyde (UF) resin viscosity on plywood adhesion. The viscosity of UF resin was controlled either by adjusting the condensation reaction during its synthesis to obtain different target viscosities (100, 200 and 300 mPa.s) at two levels of formaldehyde/urea (F/U) mole ratios (1.0 and 1.2) or by adding different amounts (10, 20 and 30%) of wheat flour into the resins for the manufacture of plywood. When the viscosity of UF resin increased by the condensation reaction, the adhesion strength of plywood bonded with UF resin of 1.2 F/U mole ratio consistently increased, while those bonded with the 1.0 F/U mole ratio resin slightly decreased, suggesting a difference in the adhesion in plywood. However, the adhesion strength of plywood decreased as the viscosity increased by adding wheat flour, regardless of F/U mole ratio. The manipulation of UF resin viscosity by adjusting the condensation reaction was much more efficient than by adding wheat flour in improving the adhesion performance of plywood. These results indicated that a way of controlling the viscosity of UF resin adhesives has a great influence to their adhesion in plywood.