• Journal of Korean Society for Atmospheric Environment
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• 제24권E1호
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• pp.44-53
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• 2008

This study was undertaken to measure the properties of individual mineral particles in an artificially saturated atmosphere at a vertical extinct mine with 430 m height. By synchrotron radiation X-ray fluorescence (SR-XRF) microprobe analysis, it was possible to determine the elemental composition of residual insoluble particles on individual cloud droplet replicas formed on the Collodion film. The XRF visualized elemental maps enabled us not only to presume the chemical mixing state of particles retained in cloud droplet, but also to estimate their source. Details about the individual mineral particles captured by artificial cloud droplets should be helpful to understand about the removal characteristics of dust particles such as interaction with clouds. Nearly all individual particles captured in cloud droplets are strongly enriched in Fe. Mass of Fe is ranged between 41 fg and 360 fg with average 112 fg. There is a good agreement between single particle analysis by SR-XRF and bulk particle analysis by PIXE.

• 한국식품영양학회지
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• 제5권2호
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• pp.111-115
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• 1992

To examine ripening in peach types, cell wall contents and polygalacturonase activity were compared in Changbang, Daegubo and Yumyung peaches. Among peach types, the hardness of Daegubo was the lowest. Yumyung peach had the highest content of alcohol-insoluble substances and Changbang peach of cell wall. The contents of total and insoluble pectic substances were little different between Changbang and Yumyung peach, while the lowest in Daegubo. Daegubo peach had the highest activity of polygalacturonase, Changballg and Yumyung peach in succession.

• 환경위생공학
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• 제13권3호
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• pp.121-127
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• 1998

This study investigated exposures to oil mist obtained from an cutting oil manufacture shop and 5 machining shops and also analysis of some oils. The results were that geometric average concentrations of oil mist were $0.29 mg/m^3$, which was less than current $TLV(5mg/m^3$) in Korea. The proper case of either type of system will ensure that atmospheric concentrations of oil mist in machine shops will be within the TLV. It should be remembered, however, that this TLV was established before there was any suggestion that in the inhalable of oil mist might rarely be carcinogenic, and so it seems prudent to keep atmospheric content as low as possible. The analysis of insoluble cutting oils with GC-MSD showed that considerable suspected PAHs were contained. But soluble cutting oil(KSM-W2) didn't almost contain PAHs.

• 한국식품저장유통학회지
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• 제1권2호
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• pp.107-116
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• 1994

This paper was carried out to Investigate changes in the activities of cell-degrading enzymes, cell wall components and cell structure of peach during maturation and storage for valuation of quality. The firmness of peach was decreased during maturation and storage, and was remarkably decreased in Daegubo than Yumyung. Polygalacturonase and $\beta$-galactosidase activities of peach were increased during maturation and storage, and were remarably increased in soft peach and in mature and soft peach, respectively. Contents of alcohol-insoluble substance, cell wall, and total and insoluble pectin of peach were decreased during maturation and storage, but cellulose and soluble pectin were increased. Intracellular space was enlarged during maturation and middle lamella was gradually degraded during maturation.

• Corrosion Science and Technology
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• 제11권4호
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• pp.112-119
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• 2012

This paper presents the results of a study of the effectiveness of cathodic protection with insoluble ICCP anode in reinforced concrete structures. Experimental tests were carried out on reinforced concrete specimens with 3 different commercial anodes for ICCP system in order to compare the effectiveness of cathodic protection. Results have shown that the kinds of anode for ICCP is irrelevant to the effectiveness of cathodic protection, In case of ICCP, the performance of cathodic protection has no relationship to the kinds of anode especially in concrete specimens with sea water condition. It has been found slightly more effective at Ti-Rod anode in fresh water condition and Ti-Mesh anode in atmospheric condition.

• 한국식품영양학회지
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• 제9권2호
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• pp.137-142
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• 1996

To develop antioxidant substances in plant, phenolic compounds in Bangah (Igodon japonicus, Hara) and antioxidative effects of cell extracts were investigated. Defatted samples of Bangah were extracted with acetone/methanol and the extracts were fractionated Into the free and bound types of phenolics. The equal amounts of fractions were dissolved In soybean oil and autoxidized at 45$^{\circ}C$ for 25 days. Peroxide value and TBA values were determined every 5 days during oxidation. Changes of peroxide and TBA values showed antioxidant effects, which were lower than control during the oxidation periods. The effects of cell extracts were evaluated as high as BHT, 0.02 ppm. The antioxidative effect of insoluble-bound phenolic extract was higher than that of free. The contents of phenolic compounds in insoluble-bound fraction were also higher than free fraction.

• 한국식품조리과학회지
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• 제9권1호
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• pp.19-24
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• 1993

The purpose of this study was to investigate the physicochemical properties of Su Ri Chwi (Synurus Palmatopinnonatifidus var. indivisus KiTAM.) cooked in different solution (distilled water, 1%, salt and 1% sodium bicarbonate added water) and time. The content of crude fiber showed the highest percentage among the alcohol-insoluble solids of cooked Su Ri Chwi. The contents of Ca and Mg were decreased by the addition of 1% sodium bicarbonate. The main neutral sugars of alcohol insoluble solids were arabinose, galactose, and glucose. The content of glucose was increased regardless of method used. The main neutral sugars of crude pectins were rhamnose, arabinose and glucose. Galactose was increased by the cooking. The gel chromatography on Sepharose CL-4B indicated that the pectin extracted from cooked Su Ri Chwi had lower molecular weight distribution than that of the raw Su Ri Chwi. Total pectin was decreased by the cooking method used. The amounts of soluble pectins of Su Ri Chwi cooked in 1% sodium bicarbonate added water were lower than those of raw material.

• 약학회지
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• 제15권1호
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• pp.1-7
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• 1971

When a large quantity of insoluble drugs was added into a solution containing a small amount of soluble drugs, the latter was adsorbed to the former. Their adsorption was expected to alter the drug activity. Berberine hydrochloride (BH) was selected as a soluble drug and tested with frequently combined insoluble drugs and antacids for their adsorption phenomena in prufied water, gastric and intetinal fluid test solutions, respectively. The adsorption isotherms of kaolin and natural anuminum silicate with BH in the three media fitted the Langmuir (LM) equation, and that of talc in purified water and gastric fluid fitted it, but in intestinal fluid it fitted the Freudlich quation. The adsorption isotherm of aluminum hydroxide fitted the LM equation only in intestinal fluid. The degree of adsorption of BH in purified water and gastric fluid is in the following order: magnesium trisilicate, kaolin, natural aluminum silicate and talc; in intestinal fluid: magnesium trisilicate, kaolin, talc, natural aluminum silicate and aluminum hydroxide. Magnesium stearate did not adsorb BH.

• 한국식품영양과학회지
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• 제21권4호
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• pp.372-376
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• 1992

만생종 유명을 시료로 하여 성숙과 저장중에 세포벽 성분을 조사, 연구하였다. 성숙과 저장중에 복숭아의 경도는 감소하엿고, 알콜 불용성 물질의 세포벽의 함량은 증가를 나타냈으며, 총 pectin질과 불용성 pectin질이 감소하는 반면에 수용성 pectin질과 cellulose는 증가하였으며, galactose와 arabinose는 감소하였다.

• Journal of Plant Biology
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• 제11권1호
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• pp.15-21
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• 1968

Chlorella ellipsoidea were grown in a Mg-free medium. Aliquots of the algal cell were taken out at the beginning and predetermined time intervals during the culture and were analyzed the contents of phosphate in various fractions of the cell constituents. The results obtained were compared with those of the control. When Chlorella cells were grown in a Mg-free medium, the contents of phosphate in the DNA protein, RNA-olyphosphate complex, nucleotidic-lbileP, and PCA-soluble, fractions decreased compared with those of the control, while the content of acid insoluble polyphosphate increased significantly. On the otherhand, RNA-P and lipid-P showed the tendency of decrease at the early stage of the culture, but they were increased more than those in the control as culture proceeds. It is showed that phosphate turnover from acid-insoluble polyphosphate into DNA, protein, and RNA-polyphosphate complex was inhibited by magnesium-deficiency of the cells.