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정신교 청주대학교 학술연구소 2005 淸大學術論集 Vol.5 No.-
The rate of death from traffic accidents in Korea is shown to by far higher than that of OECD countries, which results in the tremendous economic cost. This increase in road traffic crimes inflicts a great burden on our society and the criminal judicial system. To prevent road traffic crimes, government is making efforts to maintain a traffic order and prevent the traffic accident through all sorts of laws and systems. There are two conflicting views on the treatment and punishment of those road traffic crimes. The first view is that the unlawful act of simple order violation or the act of negligence should be lightly punished in that it may occur to anyone. The other view is the principle of strict punishment that those violating traffic-related crimes should be strictly punished to maintain the traffic order and prevent traffic accidents. That is, the principle of strict punishment for road traffic crimes is needed to inhibit and prevent them effectively. These two views compared, it is thought that the dual system should be operated that the violative act of the traffic order and the violative act of road traffic laws and regulations due to simple negligence should go be non-criminalized or non-punished on the one hand and gross negligence or road traffic crimes causing serious physical damages should be strictly punished through active legal application.
崔鍾旭,鄭信敎,金由美 慶北大學校 1991 論文集 Vol.51 No.-
To study the optimum packing conditions of shredded vegetables, we investigated the changes of gas contents and nutritional components of the PK film packed shredded pimentoes (Capsicum annum L.). 1. The contents of CO_2 in LDPE 0.04 ㎜ was more higher than any other treatments. In the relationship of the contents of CO_2 and the storaging days, we obtained the following regression model equation of predicting the CO_2 contents. CO_2(%)=a+bW+cY^2+d log Y+e log X …… (1) CO_2(%)=a+bW+cY^2+d Y+eW^2+fX …… (2) Where. W : Thickness of shredded Pimentoes Y : Day of storage X : Weight of shredded Pimentoes 2. The rate of weight loss was observed just slightly during storage, but the contents of Vitamin C and reducing sugar were reduced sharply after 2 days storage. On the appearance test. the shredded pimentoes packed HDPK 0.02 ㎜ were comparatively better than any other treatments. 3. The Correlation between volume and weight of shredded pimentoes packed PK film were explained as follow; Vs=0.26 × Vm …… (3) X=(1/1.08) × Vs …… (4) Where. Vs : Volume of shredded Pimentoes Vm : Total volume X : Weight of shredded Pimentoes
崔鍾旭,鄭信敎,黃鉉周 경북대학교 산업기술연구소 1987 産業技術硏究誌 Vol.15 No.-
This study was performed to examine the drying characteristics of the potato at various drying conditions. The eqilibrium moisture content was in the range of 0.058-0.207 g/g. The critical moisture content and diffusion coefficient were in the range of 3.151-4.210 g/g, 0.622 × 10 exp (-5)㎝/sec respectively. Comparing with other food stuffs, the activation energy (6.0 ㎉/㏖) of the potato appeared low. The drying curve equation and the drying rate equation were obtained as follows: Y=4.34×e^-0.553t dy/dt= -2.40×e^-0.553t When the initial moisture content of the potato is known, this equation can be used to predict the drying rate of the potato.
화학발광(Chemiluminescence)법을 이용한 식품 오염 미생물의 측정
김윤미,이혜련,정신교 경북대학교 농업과학기술연구소 2006 慶北大農學誌 Vol.24 No.-
Ultraweak photons could be emitted from the chemical reaction without any electromagnetic radient. These chemiluminescence could be detected by highly sensible photomultiplier recently. We will introduce the principal of chemiluminescence generation reaction, and the application studies in the determination of food-borne microorganisms in field. The counts of surface contaminated microorganism in mackeral and chicken for cold storage determined by ATP-chemiluminescence method had good correlation with the counts by standard agar plate method. However, there was little correlation between 2 methods in ginseng powder whose microbial counts were lower than 10,000 CFU.
감의 脫澁處理中 Pectin 含量과 Texture의 變化
崔鍾旭,孫泰華,鄭信敎,李吉雨,姜峻洙 慶北大學校 1989 論文集 Vol.47 No.-
This experiment was made to investigate the changes of the contents of acetaldehyde, alcohol, tannin, and to study the texture changes of persimmon in relation to the contents of pection during the removal of astringency by CO_2. 1. During the removal of astringency of persimmon fruits, the contents of soluble tannin showed the rapid decrease in high concentration of CO_2, but the contents of ethanol and acetaldehyde showed the rapid increase in all treatments. 2. The contents of W.S.P. increased, but H.S.P. decreased in all treatments. 3. All texture paramenters of persimmon fruits except springness and adhesiveness were decreased druing the removal of astringency. 4. The contents of W.S.P. were good correlated with the changes of hardness in all treatments.
( Hyun Su Baek ),( Hye Sung Lee ),( Bok Joo Kim ),( In Kyo Chung ),( Chul Hoon Kim ),( Sun Mi Jin ),( Hie Sung Hwang ),( Sang Hun Shin2 ) 한국조직공학·재생의학회 2011 조직공학과 재생의학 Vol.8 No.6
The objective of this study was to evaluate platelet-rich fibrin (PRF)’s effectiveness in repairing articular disc defect in the temporomandibular joint (TMJ) of rabbits. Eight rabbits were divided into four groups of two rabbits each, corresponding to groups A, B, C, and D. Both TMJs of all of the rabbits were used in the experiments: the right joints comprised the experimental groups, and the left ones, the control groups. The disc defect was circular and 2 mm in diameter. In the experimental groups, the PRF was compressed into the defect, whereas the control group defects were left untreated. A, B, C, and D groups were sacrificed at the 1st, 2nd, 4th and 6th weeks, respectively. The defects of each control group exhibited no specific changes. Contrastingly, in each experimental group, there was an increased number of chondroblasts at the margins of the defects, along with accelerated cell differentiation and a columnar cell arrangement observable at the time of cell differentiation. The experimental groups showed inflammatory cell infiltrations and fibrosis by the 1st week, maturation of chondrocytes by the 2nd week, and proliferation by the 4th week, after which the defects began to be filled with chondrocytes, a process that was complete after the 6th week. In the histological evaluation (H-E), the experimental groups showed significant increases of chondroblasts after the 2nd and 4th weeks, as well as regular columns of chondrocyte arrays observable during cell division. After 6 weeks, the defects were filled with chondrocytes.
Shin-Kyo Chung,C.-Y. Oliver Chen,Jeffrey B. Blumberg 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.6
To explore their bioactive fractions, Sageretia theezans leaves were extracted with 60% acetone and then fractionated sequentially with hexane, ethyl acetate, and water. Reactive oxygen radical species (ROS) (HOCl, ONOO−, and O2·−) scavenging activity, oxygen radical absorbance capacity (ORAC) value, and total phenolic content of each fraction were investigated. The ethyl acetate fraction had the largest total phenolic content and ORAC value and displayed the strongest ROS scavenging activity. The ethyl acetate fraction at 2μmol of gallic acid equivalents/L prolonged the lag time of low-density lipoprotein oxidation by 260% compared to the control. In the ethyl acetate fraction, 7-O-methylmearnsetin 3-O-rhamnoside and the other nine flavonols were characterized using high-performance liquid chromatography with electrochemical detection. The total flavonoid content in the ethyl acetate fraction was 460mg/g. 7-O-Methylmyricetin 3-O-rhamnoside and 7-O-methylmearnsetin 3-O-rhamnoside were the predominant flavonoids, making up 36% and 17% of the total flavonoid content, respectively.
A Prolyl Endopeptidase-lnhibiting Antioxidant from Phyllanthus ussurensis
Chung, Shin-kyo,Nam, Ji-Ae,Jeon, So-Young,Kim, Sang-ln,Lee, Hee-Ju,Chung, Tai-Ho,Song, Kyung-Sik The Pharmaceutical Society of Korea 2003 Archives of Pharmacal Research Vol.26 No.12
A prolyl endopeptidase inhibitor was isolated from the ethyl acetate soluble fraction of Phyllanthus ussurensis. The active compound was identified as an ellagitannin, corilagin. It was shown to non-competitively inhibit prolyl endopeptidase (PEP) with the $IC_{50}$ value of $1.17 \times $10^{-6}\mu$M. The Ki value was $6.70 \times 10^{-7}$ M. Corilagin was less inhibitory to other serine proteases such as chymotrypsin, trypsin, and elastase, indicating that it was relatively a specific inhibitor of PEP. Corilagin also effectively inhibited reactive oxygen species such as hydroxide and superoxide anion radical, hydrogen peroxide, and DPPH. Especially, corilagin showed potent scavel1ging activity on the superoxide anion radical in the ESR method ($IC_{50} =3.79 \times 10^{-6}$M) as well as xanthine oxidase system.