• Journal of Animal Science and Technology
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• v.45 no.3
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• pp.463-472
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• 2003

This experiment was carried out to investigate the effect of fermented chitosan additive(FCA) as a probiotics in finishing pig. The levels of 0.2% and 0.5% of FCA powder was added to the regular feed. A total of 30 pigs were used to evaluate the growing performance. Those FCA supplemented feeds were supplied to the pigs at 17 weeks of age for 6 weeks. After slaughtering, 4 pigs of each treatment were used to compare the physico-chemical characteristics and sensory evaluation. Addition of 0.2% of FCA improved the average daily weight gain and feed efficiency. The pH of the FCA treated loin was slightly higher than control. The L*, a*, b* values of the treatment groups were generally low compared to control group. So the effect of FCA to meat color was expression of purplish red color. Juiciness of the pork shoulder treated with 0.5% FCA was significantly(p<0.05) higher than the other groups. Flavor and overall preference scores for bacon treated with 0.5% of FCA were significantly(p<0.05) higher than the other groups.

• Journal of Ginseng Research
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• v.32 no.3
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• pp.238-243
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• 2008

Comparison of the physico-chemical characteristics were investigated among white (WG), fermented (FG) and red ginseng (RG) extracts. We observed maximum contents of extractable solids in FG, but viscosity was lower than other ginseng extracts. The contents of ash and crude protein of FG were higher than those of other ginseng extracts. The contents of carbohydrate were similar, but component Na and cruid lipids were maximum in RG. we extended our study on comparison of the calories among WG, FG and RG. We noticed that comparison of the calories among WG, FG and RG showed insignificant difference.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.05b
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• pp.393-398
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• 2005

Suspended fine mineral particles are deposited at the areas with low flow velocity and low transportation capacity in rivers, reservoirs and lakes. It can be contaminated by heavy metals. Examples of problem fields art dredging of sediment, water pollutants, and maintenance of navigation channels and construction works. To deal with the settling problems it is necessary to understand tile physico-chemical characteristics of cohesive sediment under varying density of particle and ion addition(NaOH, HCl, NaCl), which is dissolved in river, because fine-grained cohesive sediment can lead to flocculation with the physico-chemical influences and takes different characteristics. Experiments with fresh and saline water are followed with fine-grained sediments(alumina and quartz) in settling columns. Settling velocity of suspended fine particles in still water was measured with a pressure sensor(maximum 10 mbar). Until the initial concentration of 20,000 mg/1 of alumina and quartz the settling velocity was on the increase. Above this initial concentration was it on the decrease. In an acid condition, which causes strong flocculation, average settling velocity of quartz powder was high. In an alkaline water low average settling velocity of it was observed. However, alumina behaved exactly contrarily.

• Journal of the Korea Organic Resources Recycling Association
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• v.16 no.1
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• pp.70-78
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• 2008

In this study, the composition and physico-chemical characteristics of school waste which is located in B area, kyunggi-do was investigated. It is necessary to measure the characteristics of school waste to build the data-base for resource and recycling of waste. This school waste was composed of 12.25% of food wastes, 56.26% of papers, 9.26% of plastics&vinyls, 1.52% of textiles, 3.70% of wood, 0.11% of rubbers&leathers and others, respectively. Most of school wastes are mainly composed of paper and plastic waste and composition of combustible waste was about as 90%. From 3-components analysis, contents of moisture, combustible component, and ash was 5.72%, 88.29% and 5.98%, respectively. Moisture content was higher in Agricultural Dwelling school area compare to the urban dwelling school area. The chemical element of the school waste has the high order of carbon, oxygen, hydrogen on the dry basis of wastes and the low heating value of the MSW which is measured by calorimeter is shown as 3720.44kcal/kg.

• Proceedings of the Korean Society of Crop Science Conference
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• 2000.04a
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• pp.348-349
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• 2000

• Journal of Animal Environmental Science
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• v.1 no.2
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• pp.155-164
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• 1995

Despite considerable progresses made in our understanding of environmental fate of pollutants stemming from animal production systems, relatively little is known about the processes and mechanisms regulating their dispersement (via emission) into and deposition from the earth's atmospheric system. Here we present and summarize up-to-date knowledge on this topic with a main emphasis on their origin, physico-chemical characteristics, and geochemical distribution behavior.

• YAKHAK HOEJI
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• v.21 no.4
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• pp.211-213
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• 1977

Since ampicillin, one of the important semi-synthetic derivatives of penicillins, is restricted in use because of its unfavorable physico-chemical and pharmacological properties, the author synthesized a new derivative, methampicillin lysinate and its physical and characteristics were determined. The antibacterial activity of this compound against ten species of Gram positive and negative bacteria in vitro showed that it was more active to Gram negative bactria than the positive and that was three times more potent than ampicillin trihydrate.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.249-250
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• 2002

2001년 3월 26일부터 5월 6일까지 제주 고산에서 시행된 에어로졸 국제공동관측 ACE-Asia(Aerosol Characterization Experiments)은 인위적인 원인에 의해 오염된 대기에 대한 집중관측과 인공위성을 이용한 시ㆍ공간적 분포에 대한 조사를 통하여 지구대기복사에 영향을 미치는 에어로졸들에 대한 물리ㆍ화학적인 특성을 분석하고, 이를 토대로 가까운 미래의 대기환경의 변화를 예측할 수 있도록 대기복사 모델을 구성하는 데에 그 취지를 두고 있다. (중략)

• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.138-138
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• 2017

• Proceedings of the Korean Society of Crop Science Conference
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• 2001.05a
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• pp.146-147
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• 2001