• KSBB Journal
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• v.13 no.5
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• pp.593-598
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• 1998

Biological deinking process of used papers was studied by the polymer modified cellulase. Cellulase was modified with copolymers which consist of polyoxyethylene derivative and maleic anhydride(MA). The MA functional groups of copolymer can react with amino acids groups of the cellulase without much loss of activity. Modified degree of amino acids was controlled by the added copolymer. The maximum modified degree was about 60% and it was obtained when the weight ratio of copolymer and cellulase was 4. The remained activity of the maximum modified cellulase(MMC) was higher than 80% of native cellulase. The MMC's concentration was 0.05-2.0 wt% relative to the dry paper. In mechanical pulping process, cellulase enhanced the detachment of the ink particle from the used paper by partial hydrolysis of the fiber. The polyoxyethylene of modified cellulase produced the forms which can float the separated ink particle. Compared to the convention deinking method with NaOH or organic chemicals, the new biological deinnking process improved the physical properties such as freeness, tearing strength and whiteness.

• Journal of Life Science
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• v.11 no.4
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• pp.298-303
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• 2001

The hypolipidemic effect of the diet containing uncooked food was evaluated in hyperlipidemic rats. Body weightgain, food intake and food efficiency ratio were not significantly different among the diet groups examined. Significant decrease in plasma total cholesterol(8.8%), triglyceride(10.0%) and LCL-cholesterol(34.8%) were observed in uncooked food diet groups, and the liver total cholesterol and triglyceride level to the extent of 8.7% and 16.7%, respectively. Uncooked food groups substantially increased the plasma HDL to total cholesterol ratio(47.2%) and decreased the atherogenic index(37.6%) as well. Gut transit time for uncooked food was significantly higher, up to 104 minutes, compared to that of control diet group. These results suggest that uncooked food may have beneficial effects on blood lipid level and gut transit time in hyperlipidemc rats.

• Biomolecules & Therapeutics
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• v.5 no.1
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• pp.43-47
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• 1997

Effects of Bupleuri Radix, Paeonie Radix or Uncariae Ramulus et rncus on experimental yperlipidemia were studied. Hyperlipidemia was induced on male Wistar rats by feeding them on high holesterol diet for one week, as previously described by the authors. Blood lipid profile was verified on these ats by measuring total cholesterol(TC), triglyceride(TG), high density lipoprotein cholesterol(HDL) and low ensity lipoprotein cholesterol(LDL). Then, the rats were followed by feeding normal diet. At the same time, ethanol extracts of the three individual herb medicines were orally administered to the rats for 4 weeks and the parameters above mentioned were monitored. Methanol extract of 5Bupleuri radix reduced the TC value significantly at 2 week point and Paeoneae Radix reduced the TC value at 4 week point in compare to control group, suggesting the antihyperlipidemic effect of the two herbal medicines in vivo. The extract of Uncariae Ramulus et Uncus however did not show antihyperlipidemic effect in our experiment.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.33 no.1
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• pp.8-15
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• 2001

Presence of small amount of old newsprints printed with waterbased flexographic inks leads to a significant loss brightness of the deinked pulp by flotation process. Recently there has been an increased interest in employing neutral deinking processes to solve the problems associated with waterbased flexo ink. A comparative experimental study was performed to evaluate the efficiency of neutral deinking and conventional alkaline deinking for ONP furnishes contaminated with flexo ink. It was shown that neutral deinking provides significant improvements in brightness, yield and freeness as compared with alkaline deinking. Flotation efficiency was different depending upon the type of surfactants used in neutral deinking. The result of this study showed that alcohol type surfactant is superior to fatty acid type surfactant in neutral deinking efficiency.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.42 no.1
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• pp.20-25
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• 2010

Fractionation effects of the slot-type and the hole-type screens of mutifractors were studied using a pilot multifractor. We used a slot screen of 0.15 mm, and two hole screens of 1.0 and 2.0 mm, respectively, in the study. We found hole-type screens were more effective for fractionation of fiber furnishes according to their fiber lengths. Slot-type screen was more effective to remove the shives from the accepted fiber furnishes. There existed a high regression coefficient between the fiber length differences and the freeness differences of the accepted and the rejected fiber furnishes.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.42 no.1
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• pp.13-19
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• 2010

Four waste paper mills in Korea, where multifractors, devices for fiber fractionation, were installed, were selected to investigate how effectively and how differently the multifractors were used. They all used slot-type screens. Effective fiber fractionations by fiber length were expected by the multifractors, but in reality, they were used for selecting fiber furnishes that were flexible and hydrated. Flakes, which meant large fiber bundles, were rejected effectively by the multifractors. There existed a high regression coefficient between the fiber length differences and the freeness differences of the accepted and the rejected fiber furnishes.

• Journal of Nutrition and Health
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• v.30 no.1
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• pp.12-18
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• 1997

The effects of Artemisia princeps var orientalis(mugwort), Circium japonicum var ussuriense(Unggungqui) on serum lipid componets in rats was evaluated. Thirty rats divided into 5 experimental groups were fed with the diet containing 1% cholesterol, 0.25% sodium cholate, 10% coconut oil and 5% lard(control diet), supplemetned with 5% plant powder or its water soluble extract(experimental diet) for 4 weeks. Proximate analysis data and compositions of ash, dietary fiber and fatty acids in plants were presented. The concentrations of the total cholesterol was significantly lower in Ungungqui powder, Ungungqui extract and mugwort powder diet groups than the control. Serum HDL-cholesterol level was significantly higher in Unggunqui powder and Unggunqui extract diet group than the control. The concentration of LDL was significantly lower in Unggungqui power or extract diet group compared to the control. The values of VLDL and chylomicron were comparatively lower in Unggungqui power and mugwort powder diet group than in the other diet groups. The concentration of seum triglyceride and phospholipid was lower in Unggungqui powder diet group than in the control.

• Review of KIISC
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• v.22 no.2
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• pp.52-57
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• 2012

프라이버시 참조구조(privacy reference architecture)는 구현 및 배치 상황을 바탕으로 해야 하며, 독립적으로 존재할 수 없다. 구조 설치는 프라이버시 인지 및 가능 ICT 시스템을 배치할 구조와 조화를 이루어 운영되며 정책을 반영하는 업무 관리 기능, 프로세스 및 절차를 종합적으로 고려하여 이루어진다. 업무 및 데이터 처리 모델 또는 인벤토리의 공식적인 구축 및 유지는 해당 조직에 적용되는 모든 프라이버시 및 정보 보호 요건에 부합해야 한다. 업무 프로세스 모델이 구축되고 데이터 처리 모델과의 비교가 완료되면 동의 취득 기능, 개인식별정보 범주화 및 태깅 기능, 감사 및 기록 절차, 보존 일정, 고지 및 보안 경보와 같은 프라이버시 통제수단을 정하고 필수적인 프라이버시 보호 요건과 비교할 수 있다. ISO/IEC JTC1 SC27 WG5의 프라이버시 표준화는 프라이버시 프레임워크, 프레임워크 기반 구현을 위한 프라이버시 레퍼런스 아키텍쳐를 중심으로 이루어지고 있다. 본 논문에서는 프라이버시 표준화를 위한 국외 표준화 동향을 소개하고, 향후 추진해야할 중점 표준화 항목을 도출한다.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.38 no.4 s.117
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• pp.31-40
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• 2006

Presence of old newspapers printed with waterbased flexographic inks leads to a significant loss of brightness of the deinked pulp by flotation process. It has been shown that neutral or acidic flotation deinking has many advantages in recycling of flexo printed newsprints. A comparative experimental study was performed to evaluate the deinking efficiency of three alcohol type deinking agents in flotation deinking of flexo printed newspapers. Zeta potential of neutral deinked pulp was less negative than alkaline deinked pulp. Also neutral deinking was advantages in reducing turbidity, COD, and cationic de-mands of deinking process water.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.31 no.3
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• pp.1-9
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• 1999

Effect of furnish on enzyme activity was investigated by using the three components (cellulose, enzyme, and cationic polyelectrolyte) model papermaking system. Avicel was used as a cellulose model compound to observe the effect of adsorption and desorption of enzyme with other component and the resultant change of particle size. As an experimental result, the enzyme loses considerably its apparent activity due to the adsorption onto cellulose and cationic polyelectrolyte. Activities of enzyme applied to the actual papermaking stocks having controlled fiber length showed different behavior in terms of pulp species UKP and KOCC stocks. That is, the enzyme activity in UKP was increased as fines content increased, however, vice versa in KOCC stock . This result can be considered to be the existence of various contaminants included in the fines of KOCC . The effect of possible contaminants such as inorganic materials, calcium ion, surfactant, and conductivity on enzyme activity were also investigated.