• Journal of Korea Fishing Vessel Association
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• v.47
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• pp.7-11
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• 1991

• Resources Recycling
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• v.27 no.1
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• pp.106-117
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• 2018

The present study was carried out to find a suitable drying method for the determination of non-evaporable water in hydraulic inorganic materials. In Part 1 of the paper, the case ordinary Portland cement was discussed and, in this Part 2, the case of alkali active slag (AAS) was investigated. Various drying methods including vacuum and oven drying, and an ignition, were used for the AAS system having different w/b, types and amounts of alkali activators. It was found that a combination of the vacuum and oven drying was a suitable drying method for the AAS case. Although a part of the crystallized water in hydration products was decomposed, but the free and adsorbed water could be completely evaporated and the deviation of the results was small.

• Food Science and Preservation
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• v.16 no.6
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• pp.843-848
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• 2009

Green peppers were dried using maltodextrin and recycled dehydration liquid as dehydrating agents, and the quality of dried green pepper powders was compared with that of freeze-dried and hot air-dried samples in terms of moisture content, color, antioxidant activity, capsaicinoid level, and sensory acceptability. The moisture content of maltodextrin-treatedgreen pepper powder was higher than that of samples prepared using recycled dehydration liquid. The lightness (L) value rose with increasing concentrations of maltodextrin powder or liquid. The antioxidant activities of pepper powders prepared using the molecular press dehydration method were similar to that of alpha-tocopherol, and better than that offreeze-dried or hot air-dried samples. Capsaicinoid levels fell with increasing concentrations of maltodextrin powder and liquid. The sensory evaluation data on green pepper powders prepared using the molecular press dehydration method were better than those obtained when freeze-dried and hot air-dried samples were evaluated. These results indicate that drying of green pepper powders using maltodextrin and recycled dehydration liquid as dehydrating agents is very efficient.

• Proceedings of the Korean Fiber Society Conference
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• 2003.10b
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• pp.235-236
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• 2003

섬유의 습식 가공은 에너지 집약적 산업이다. 대부분의 에너지는 가공시 사용된 많은 양의 수분을 증발시키고, 건조하는데 소모되어진다. 따라서 거품가공은 물 소비를 감소시켜 에너지를 절약하고 폐수를 감소시키는데 주된 목적이 있다(1). 거품가공은 직물에 부가된 물의 양을 감소시켜 건조단계에서 상당한 에너지 소비(30~80%)를 감소시키는 것으로 알려져 있고(2~3), 최근에는 낮은 wet pick-up율에 의한 가공제 처리의 성능 및 수지의 가교분포에 대한 효과 등에 관한 많은 연구가 이루어지고 있으나 미흡한 점이 많이 보고되고 있다.(4~7) (중략)

• Journal of Oral Medicine and Pain
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• v.22 no.1
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• pp.111-123
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• 1997

Peroxidase system은 구강내 고유의 항균체계로서 항세균물질인 $HOSCN/OSCN^-$을 생산하여 다양한 그램 양성 그리고 그램 음성 세균에 대해 살균 및 정균작용을 나타낸다. 본 연구는 peroxidase system을 함유한 치약을 사용한 후 건강한 대상자의 자극성 전타액내 생성되는 $HOSCN/OSCN^-$의 양을 측정하여 최대 생성시간을 결정하였다. 그 후 건강한 대상자에게 임의로 실험치약과 대조치약을 할당하여 2주간 사용하도록 한 후 $HOSCN/OSCN^-$ 최대 생성 시간에 타액을 채취하여 치약 사용전과 2주후의 타액분비량, pH, 점조도 그리고 S. mutans와 lactobacilli에 대한 항균효과를 비교하였다. 구강건조증 환자를 대상으로 한 두 번째 연구에서도 peroxidase system을 함유한 세치제를 사용한 후 생성되는 $HOSCN/OSCN^-$의 최대생성시간을 측정하였으며, peroxidase system을 함유한 세치제가 S. mutans와 lactobacilli에 미치는 영향을 양치전과 양치후 $HOSCN/OSCN^-$의 최대생성시간에 타액을 채취하여 비교하였다. 이와같은 실험을 통해 다음과 같은 결론을 얻었다. 1. 건강한 대상자의 자극성 전타액내의 $HOSCN/OSCN^-$의 농도는 양치후 30분 후 대조군에 비해 peroxidase systems을 함유한 세치제를 사용한 군에서 유의성있게 높게 나타났다 (p < 0.05). 2. 건강한 대상자의 자극성 전타액의 타액분비량, pH, 타액점조도는 peroxidase system을 함유한 세치제를 2주간 사용한 후에도 유의한 변화를 나타내지 않았다. 3. 2주간 실험치약을 사용한 후 건강한 대상자의 자극성 전타액내 S. mutans와 lactobacilli의 양은 peroxidase system을 함유한 세치제를 사용한 군에서 상대적으로 낮게 나타났으나 통계학적 유의성은 없었다(p = 0.206 : lactobacilli, p = 0.944 : S. mutans). 4. 구강건조증 환자의 자극성 전타액내의 $HOSCN/OSCN^-$의 농도는 양치후 30분(p < 0.01)과 60분(p < 0.05)에서 대조군에 비해 peroxidase system을 함유한 세치제를 사용한 군에서 유의성있게 높았다. 5. 구강건조증 환자의 양치 후 30분에 채취한 자극성 전타액내의 S. mutans와 lactobacilli의 양은 peroxidase system을 함유하거나(p < 0.01) 함유하지 않은(p < 0.05) 치약을 사용한 군 모두에서 양치전에 비해 유의성있게 감소하였다. 6. 양치후 30분에 채취한 구강건조증 환자의 자극성 전타액내 S. mutans 양은 peroxida system을 함유한 세치제를 사용한 군에서 대조군에 비해 유의성있게 낮았다(p < 0.05). 7. 양치후 30분에 채취한 구강건조증 환자의 자극성 전타액내 lactobacilli양은 peroxidase system을 함유한 세치제를 사용한 군에서 대조군에 비해 상대적으로 낮게 나타났으나(p = 0.067) 통계학적 유의성은 없었다.

• Korean Journal of Food Science and Technology
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• v.16 no.3
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• pp.261-266
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• 1984

Soymilk residue was washed separately with acetone, ethanol, isopropyl alcohol and n-hexane, and then dried at $45^{\circ}C$. The dried residues were evaluated for drying rate, color and chemical and functional properties. Washing with acetone resulted in the shortest drying time (1hr) and the highest in protein content (48.8%) and in Hunter 'L' value. The dried residues after treatment with acetone and alcohols showed relatively high values of 4.3-4.7g/g and 8.5-8.7g/g in oil and water absorption, respectively. Addition of the acetone treated residue to wheat flour at a level of 10% affected little in Amylograph viscosity while those treated with other solvents caused a significant decrease in the viscosity.

• Clean Technology
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• v.19 no.4
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• pp.464-468
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• 2013

In this study, in order to increase solid content of coal water fuel (CWF), various experimental parameters (i.e., coal type, additive, particle size distribution, drying method) were evaluated. To investigate the drying method, specimen is compared to using flash dry, fluidized bed dry and oil deposit stabilized coal. Difference of the solid content between low rank coal and high rank coal in this case indicate that high rank coal exhibits more higher than 20% of the solid cotent. And specimen for dispersibility was prepared by using dispersing agent of 4 types. As a result, using the dispersing agent was shown 5% higher in sold content than the case of not using the dispersing agent. Efficiency of CWF was improved by using fine coal of 80% in the particle size distribution of coal. Result of CWF using drying methods of 3 types, oil deposit stabilized (ODS) coal dried and stabilized was effective 12% higher in sold content than raw coal.

• Korean Journal of Weed Science
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• v.13 no.1
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• pp.7-13
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• 1993

Experiments were carried out to investigate the utilization of paraquat and diquat as desiccants for harvest-aid of sesame. When paraquat and diquat were sprayed at 3days or 3hours before cutting of sesame plants, moisture content in treated plots was evenly rapidly decreased and sesame yeild was not significantly different as compared with that in untreated plot. Percentage of germination of sesame seed in treated plots was similar to that in untreated check. Residual amount in sesame seed was not detectable when these chemicals were treated with 250ppm at 3days before cutting of sesame plant. Percentage of thrashing was high in sesame plants treated with paraquat and diauat with the lapse of time after cutting. Required labor in thrashing of sesame was reduced when applied with these chemicals. Harvest efficiency of sesame after spray of paraquat and diquat was good by comparison with the traditional practice.

• Journal of Life Science
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• v.10 no.3
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• pp.229-235
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• 2000

The absorption characteristics of Korean yam powder according to different drying methods were investigated. The physical properties of yam powder by different drying methods were showed the biggest porosity in freeze drying sample, while the smallest in hot air drying sample. No difference was founded in proximate compositions of yam powder by various drying methods. The amount of total phenolic compound and Vit C were showed the bigger decrement in freeze dried sample than other drying methods. The time reaching to equilibrium moisture content were determined in 12 days. Monolayer moisture contents were predicted to 0.0508∼0.0588 by BET equation and 0.0705∼0.0811 g H2O/g solid by GAB equation. BET equation for isothermal absorption curve showed over 0.95 R-square for every drying methods. GAB equation showed over 0.99 in vacuum and freeze drying but a poor R-square in hot air drying.

• Korean journal of food and cookery science
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• v.17 no.1
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• pp.55-59
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• 2001

To investigate the usefulness of Allium senescens as a aromatic edible plant, volatile flavor components and flavor pattern were analyzed. Essential oils of fresh and freeze dried Allium senescens were extracted by SDE(simultaneous steam distillation and extraction) method using diethyl ether as solvent. And their volatile flavor components were analyzed by gas chromatography(GC) and gas chromatography-mass spectrometry (GC-MS). A total of 46 components, including 11 hydrocarbons, 9 aldehydes, 4 alcohols, 2 esters, 7 acids, 4 ketones and 9 sulfur containing compounds were identified in fresh Allium senescens. In freeze dried Allium senescens, 8 hydrocarbons, 5 aldehydes, 3 alcohols, 5 esters, 2 acids, 3 ketones and 4 sulfur containing compounds were identified. Volatile flavor patterns of Chinese chive and Allium senescens were compared using electronic nose. The score of first principal component was significantly different in Allium senescens and Chinese chive.