• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2003년도 추계학술발표대회 논문집
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• pp.103-106
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• 2003

In this work the novel potential epoxy resins, were synthesized and acrylated. Their structures were confirmed by means of FTIR, $^1H NMR, and^{13}/C NMR$ spectroscopies. Also, we were to note the effect of W curing on functional group changes of VE/UP blend system after UV curing.

• 한국식품과학회지
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• 제28권3호
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• pp.458-463
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• 1996

생강의 저장 전처리 효과를 보기 이ㅜ하여 충남 서산에서 수확한 햇생강을 wounding 처리후 온도조건 25, 30, $35^{\circ}C$및 습도조건 83%, 93% RH에서 $1{\sim}7$일간 curing시켜 실험실용 저장고($12^{\circ}C,$ 95% RH)에 보관하였다. 일정한 온 습도에서 curing 기간이 길수록 생강의 중량은 감소되었고, 온도 및 curing기간이 일정할 때 습도가 높을수록 중량감소는 작아졌다. Curing 기간동안 발아율은 $30^{\circ}C$, 90% RH이상의 조건에서 촉진되었으며, 곰팡이 발생은 전반적으로 나타났으나 특히 $35^{\circ}C$에서 curing기간이 길어질수록 상대적으로 진행이 빨랐다. 상처부위 표면의 경도는 93% RH일 경우가 83% RH보다 모든 온도조건에서 대체로 높은 경향을 보였으나, 전체적으로 볼 때 curing조건에 상관없이 일반적으로 높일 수 있었다. Curing 처리된 생간의 저장기간중(60일간) 수분의 손실로 인한 중량감소는 30일경 $2.0{\sim}8.2%,$ 60일경 $7.2{\sim}14.2%$의 범위를 보였다. 실험 결과들을 종합하여 screening하면 93%RH, $25^{\circ}C$에서 3일간의 curing이 저장기간중 품질변화를 최소화시킬 수 있는 것으로 나타났다.

• 한국농공학회지
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• 제17권2호
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• pp.3749-3757
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• 1975

This study was conducted to investigate some effects of Cemesol on acidresistance and compressive strength of concrete. In mix design of concrete, the cemesol was used as an admixture of cement, and it was added to the mix in an amount equal to 0.1%, 0.2%, 0.3%, and 0.4% by weight of cement of the mix. Concrete specimens were made in accordance with the. Korean Standard Specification for concrete and they were tested for acid-resistance and compressive strength at 2 weeks intervals through 8 weeks. The tests were performed in two cases non-curing and curing for 28 days. The results obtained from the tests are summarized as follows. 1. Refering to acid-resistance test, the cemesol was comparatively effective at every cemesol content except 0.3% in case of non-curing and it was found that cemesol content of 0.4% was the optimum. On the other hand, the cemesol was ineffective in case of curing, but it was seen that cemesol content of 0.1% had some effect at 6 to 8 weeks curing only. 2. Refering to compressive strength test, the cemesol was remarkably effective at a content of 0.1% but it was also shown most inefiective at content of 0.3% in case of non-curing. On the other hand the cemesol was comparatively effective at every content of cemesol except a content of 0.2% in case of curing and it was determined that the cemesol content of 0.3% may be an optimum content. 3. Since optimum cemesol content varied according to acid-resistance, compressive strength and cases such as non-curing and curing, as indicated above may be desirable to choose an optimum cemesol content suitable for purposes and ciroumstances of construction works or conditions of location. 4. The corrosive rate was proportional to compressive strength in case of non-curing, but the relation was reversed in case of curing. It was found that corrosive rate for 8 weeks did not influence compressive strength in case of non-curing but compressive strength in case of curing begins to vary under the influence of corrosion. Thus, corrosion may be more serious to compressive strength in case of curing than that in case of non-curing.

• 한국연초학회지
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• 제22권2호
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• pp.107-113
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• 2000

This study was carried out to investigate the changes in composition of the non-volatile organic acid, fatty acid and polyphenolic compounds during air-curing in burley tobacco leaves, and the effect of curing methods on the contents in air-cured leaves. The air-cured variety, (Nicotiana tabacum cv KB108) was normally grown at the Chonju tobacco experiment station in 1998. Plants designated for the each curing methods were harvested on the same date, and the ripe leaves for primed curing were harvested at the tenth leaf position from the top on the stalk. The major compounds of non-volatile organic acid and fatty acid were malic, citric, oxalic, palmitic, and linolenic acid. The concentrations of malic acid, unsaturated fatty acids, chlorogenic acid and rutin in cured leaves were remarkably decreased during curing, while citric acid was increased. The changes of these compounds showed the similar pattern during both primed and stalk curing. In connection with curing methods, the contents of malic, linoleic and linolenic acid were higher in excessive cured leaves than those in primed cured or stalk cured leaves, while the content of citric acid was lower in excessive cured leaves than that in primed cured or stalk cured leaves.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 1999년도 제29회 춘계학술대회
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• pp.247-254
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• 1999

The effect of manufacturing parameters such as molding and curing conditions on friction characteristics of friction materials were studied using a pad-on-disk type friction tester. The optimal manufacturing rendition for the best friction characteristics were investigated using friction materials containing 15 ingredients employing Taguchi robust design experiment. The friction characteristics were strongly affected by pressing time, pressing temperature, pressing pressure, curing time, curing temperature.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1995년도 봄 학술발표회 논문집
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• pp.263-267
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• 1995

The usual methods for the temperature control of mass-concrete structures include the use of low-heat cement, pre-cooling, post-cooling, or sheet curing. In order to control the heat of hydration during the construction of mass-concrete structures, the combination of the above methods is commonly employed. For the construction of mass-concrete structures such as massive pier or anchor, it is necessary to control the curing temperature with pipe cooling. In this study, the method of analysis on the effect of pipe of was proposed to prevent the thermal cracking due to heat of hydration In addition the effect of covering the concrete surface with blanket insulation was investigated. The results of the present study may be useful for the prediction of curing temperature of mass-concrete structures and the reasonable construction management.

• Bulletin of the Korean Chemical Society
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• 제32권3호
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• pp.961-963
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• 2011

Spin-coated waterborne polyurethane to protect glass surface from environmental attacks was cured by using microwave heating. The effect of microwave heating on the reaction kinetics, chemical durability, and transmittance of polyurethane was investigated. In comparison to the conventional heating the results show that the microwave heating substantially accelerates the curing process of waterborne polyurethane and the total time for the completion of the reaction is only 1/7 of that in the conventional process. The microwave cured sample showed an excellent caustic resistance compared to conventional cured one. It means that microwave heating produces dense structure during curing process. The dense structure does not affect to the transmittance in the visible region.

• 한국식품영양학회지
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• 제12권4호
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• pp.370-374
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• 1999

This study was carried out to some properties and curring effect of drip obtained from frozen-thawed park loin ham belly and imported belly by thawing process at 4$^{\circ}C$. Moisture content and pH value of drips were 88.05~90.85% and 5,72~6.05 and do not show significant differences between each samples. Protein contents were 11.07, 8.85, 8,76 and8,13% in the drips from domestic pork loin, ham, belly and imported belly, respectively. Approximately 99% of the drip were constituted with moisture and protein in any part of domestic pork and imported belly. Glutamic acid proline glycine, alanine and lysine were the predominant amino acid in the drips. Curing process of the drip by nitrite increased the pH value and total amino acid content. The residual nitrite decreased during the period of curing and total plate counts in drip with nitrite did not reach 1$\times$105CFU/g until 7 days.

• Advances in concrete construction
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• 제5권5호
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• pp.481-492
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• 2017

The aim of this paper is to investigate the effect of quartz powder (Qp), quartz sand (Qs), and different water curing temperature on mechanical properties including 7, 14, 28-day compressive strength and 28-day splitting tensile strength of Ultra High Performance Concrete and also finding the correlation between these variables on mechanical properties of UHPC. The response surface methodology was monitored to show the influences of variables and their interactions on mechanical properties of UHPC, then, mathematical models in terms of coded variables were established by ANOVA. The offered models are valid for the variables between: quartz powder 0 to 20% of cement substitution by cement weight, quartz sand 0 to 50% of aggregate substitution by crushed limestone weight, and water curing temperature 25 to $95^{\circ}C$.

• 한국식품영양과학회지
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• 제15권1호
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• pp.69-74
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• 1986

Lactobacillus plantarum을 이용하여 햄의 품질과 풍미를 개선하고 염지 기간을 단축하기 위하여 공시균을 육내부에 접종한 후 염지 기간별로 세균수의 변화 및 이화학적 변화를 조사한 결과는 아래와 같다. 1. 염지 경과에 따른 염지육에 있어서의 대장균군은 기간이 지남에 따라 감소하는 경향이었고 저온균과 내염균은 4일까지 증가한후 다소 감소하였다. 2. 염지 경과에 따른 염지액에 있어서의 대장균군은 4일까지 증가한후 감소하였고 저온균 및 내염균은 7일가지 증가한후 감소하는 경향이었다. 3. pH의 변화는 염지육과 염지액에서 다같이 1일째 급속히 저하한후 서서히 증가하는 경향이었다. 4. 염지 육색은 7일째 84.05%의 발색율을 나타내어 가장 높았다. 5. 아미노산 조성은 17종의 아미노산중 7일과 10일째에 glutamic acid함량이 14.76%과 14.01%로 가장 높았다. 6. 지방산의 조성은 13종이며 전체 불포화 지방산은 서서히 감소하는 경향이었다.