• 한국인쇄학회지
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• 제12권1호
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• pp.81.1-91
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• 1994

Irradiation of aromatic diazonium salts resulted in an effcient elimination of nitrogen, yielding substitution products. This paper was not only studies about photolysis of aromatic diazonium with double salts but also coexistence of ion and radical when they was photolysis. Photolysis of aromatic diazonium was depend on excite wave length therefore photolysis products out put different absorption intensity such other. We also confirmed coexistence of ion and radical when they was accomplished photolysis. In case of BD, there are ion decomposition process about 90 percentage, decreased ion decomposition process the other side radical`s it was becomeing increased according to excite of short-wave length.

• 대한수학회보
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• 제53권3호
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• pp.751-763
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• 2016

The properties of the nonabelian tensor products are interesting in different contexts of algebraic topology and group theory. We prove two theorems, dealing with the nonabelian tensor products of projective limits of finite groups. The first describes their topology. Then we show a result of embedding in the second homology group of a pro-p-group, via the notion of complete exterior centralizer. We end with some open questions, originating from these two results.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
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• pp.583-586
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• 2000

Many different oligosaccharides were produced by transferring the fructose residue of sucrose to maltose, cellobiose, lactose and sucrose (self-transfer), where their yields of fructosylated acceptor products accounted for $26{\sim}30%$ (w/w). The maximum conversion yield (30%) was obtained in fructosyl cellobioside formation with 500 g sucrose/l (substrate) and 200 g cellobiose/l (acceptor). These four acceptors gave various products having DP (degree of polymerization) $2{\sim}7$ by successive transfer reactions.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 19-21 Oct. 1992
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• pp.90-95
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• 1992

Authors have developed the method of selecting the efficient variant of designing a systems or products from a some number of competition variants in the conditions of vagueness of the initial information. Registration of information vagueness degree concerning the quantity index values is carried out of the expense of giving to the expert the possibility of using different methods of index evaluation numerical evaluations with physical scale; phrases of limited language; and points evaluation. Using of this method and software is important for marketing research, for systems of quality control of products.

• 한국경영과학회지
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• 제22권1호
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• pp.87-99
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• 1997

This paper considers warranty servicing for repairable products when product lifetimes are phase-type(PH) distributions. Two replace-repair strategies are analyzed based on renwal processes. The quantities of interest can be expressed in terms of the renewal function which, in general, is very difficult to evaluate. By exploiting properties of PH distributions we obtain simplification to evaluate these performance measures. Numerical examples for four different PH distributions with typical functions are presented and the results are discussed.

• 한국연초학회지
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• 제8권2호
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• pp.59-66
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• 1986

The Pyrolytic behavior of glycyrrhizic acid and glycyrrhetini c acid, which are natural flavorants for manufactured cigarettes was observed to find its contribution to the smoke composition. Pyrolyzates of them at 800t were identified using a gas chromatography and a mass spectrometer. According to the analysis of the pyrolytic Products, 43 different compounds were identified Among them the aromatic hydrocarbon compounds were found to be the major products.

• Journal of Information Technology Applications and Management
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• 제20권4호
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• pp.263-278
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• 2013

SNS users have increased at rapid rate. Many firms are expected to use SNS, especially in marketing area. This study describes a SNS-based new products promotion case study. We aim to identify how differently SNS users respond to different types of SNS media or SNS contents. In this analysis marketing effects are measured in a number of website hits. The study result shows how the number of user's hits differs upon a combination of SNS media and SNS contents.

• Bulletin of the Korean Chemical Society
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• 제25권12호
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• pp.1775-1778
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• 2004

The branch-like, feather-like $BaCrO_4$ nano-superstructures were synthesized with bioactive eggshell membrane as directing and assembly template. Studies on the two products revealed that they formed through the self-assembly of nanoparticles, and that the optical properties of the products were different from $BaCrO_4$ bulk materials.

• Asian-Australasian Journal of Animal Sciences
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• 제33권6호
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• pp.1002-1011
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• 2020

Objective: This study was conducted to determine the composition and diversity of the fungal flora at various control points in cheese ripening rooms of 10 dairy farms from six different provinces in the Republic of Korea. Methods: Floor, wall, cheese board, room air, cheese rind and core were sampled from cheese ripening rooms of ten different dairy farms. The molds were enumerated using YM petrifilm, while isolation was done on yeast extract glucose chloramphenicol agar plates. Morphologically distinct isolates were identified using sequencing of internal transcribed spacer region. Results: The fungal counts in 8 out of 10 dairy farms were out of acceptable range, as per hazard analysis critical control point regulation. A total of 986 fungal isolates identified and assigned to the phyla Ascomycota (14 genera) and Basidiomycota (3 genera). Of these Penicillium, Aspergillus, and Cladosporium were the most diverse and predominant. The cheese ripening rooms was overrepresented in 9 farms by Penicillium (76%), while Aspergillus in a single farm. Among 39 species, the prominent members were Penicillium commune, P. oxalicum, P. echinulatum, and Aspergillus versicolor. Most of the mold species detected on surfaces were the same found in the indoor air of cheese ripening rooms. Conclusion: The environment of cheese ripening rooms persuades a favourable niche for mold growth. The fungal diversity in the dairy farms were greatly influenced by several factors (exterior atmosphere, working personnel etc.,) and their proportion varied from one to another. Proper management of hygienic and production practices and air filtration system would be effective to eradicate contamination in cheese processing industries.

• 한국식품영양과학회지
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• 제32권5호
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• pp.667-672
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• 2003

조리수율과 지방 보유율 및 보수력은 hydrocolloid 첨가구에 비하여 대조구가 가장 낮았으며 hydrocolloid는 식품의 증점성, 유화 안정성, gel형성, 피막형성 등의 기능을 가지고 있어서 가열중의 드립의 양을 감소시키고, 지방과 결합하여 지방보유율을 높일 수 있었다. pH는 조리전보다 조리후에 높아지는 경향을 나타냈고, 재가열시에는 조리후보다 같거나 약간 감소하는 경향을 나타냈으며 hydrocolloid 첨가구가 대조구에 비해 높은 경향을 나타냈다. 모든 실험군을 8일간 저장하는 동안 총균수는 큰 증가를 보이지 않았으며 황색포도상구균과 대장균 또한 검출되지 않아 저장기간동안 비교적 신선한 상태를 유지하고 있었다고 볼 수 있었다. 재가열한 대조구의 경도, 뭉침성, 부서짐성 등은 hydrocolloid를 첨가한 완자보다 높은 경향을 나타냈는데, 이는 hydrocolloid의 보수력과 유화안정성 때문이라고 할 수 있으며 결국 지방을 줄이면서 hydrocolloid와 두부를 첨가한 완자가 지방을 20% 첨가한 완자보다 조직적 특성이 비슷하거나 우수하여 지방 대체제로서의 hydrocolloid와 두부의 이용 가능성을 제시하였다. 대조구에 비하여 hydrocolloid를 첨가한 완자가 전반적인 관능수용도 역시 우수한 것으로 나타났다. 시료간의 유의적인 차이는 없었으나 제조 후의 다즙성, 조직감, 종합적인 품질은 xanthan gum 첨가구가 가장 좋았으며, 재가열한 제품에서는 sodium alginate 첨가구가 가장 좋았다. 이처럼 조직적인 특성과 함께 관능적인 면에서도 hydrocolloid첨가 완자가 대조구에 비해 좋은 결과를 나타낸 것은 저지방 기능성 육제품의 제조에 있어서 hydrocolloid첨가가 긍정적인 영향을 줄 수 있다는 것을 나타낸다.