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제대혈 유래 인간 비만세포에서의 세포증식 및 히스타민 분비에 대한 Interleukin 9의 영향
안강모 ( Kang Mo Ahn ),이광신 ( Kwang Shin Lee ),신미용 ( Mi Yong Shin ),박화영 ( Hwa Young Park ),안연화 ( Yeon Hwa Ahn ),손대열 ( Dae Yeul Son ),이상일 ( Sang Il Lee ) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 2002 소아알레르기 및 호흡기학회지 Vol.12 No.4
목적: Interleukin 9(IL-9)는 Th2 싸이토카인의 일종으로서 알레르기 염증반응의 병태생리에 관여하는 것으로 알려져 있다. 본 연구에서는 IL-9이 주요 알레르기 염증세포의 하나인 인간 비만세포에 어떠한 영향을 주는지를 알아보기 위하여 시행되었다. 방법:본 연구에서는 인간 제대혈에서 CD34 (+) 세포를 분리한 후 stem cell factor(SCF), IL-3, IL-6를 투여함으로써 비만세포를 선택적으로 배양하였다. 8주간 배양이 끝 Purpose:Interleukin-9(IL-9), one of Th2-type cytokines, might be important in the pathophysiology of allergic diseases. We investigated the effect of IL-9 on human mast cells by assessing cell proliferation and histamine release. Methods: Human umbilical
임중연,이호용,고광일 東國大學校 1996 東國論叢 Vol.35 No.-
This paper is concerned with and efficient model for the structural analysis of threaded connections which is used to assemble the tubular connections such as pipes. Advanced mechanics has been used to develop the model which yields acceptably accurate solutions for stresses when compared to other methods such as experimental or finite element analysis procedures. Beam-on-elastic-foundation equations are used to compute stresses due to assembly of the connection while bolt-nut equation and Lame' equation are used for axial loads and pressures. Numerical results show that our model is computationally efficient and valid in terms of stress distribution for make-up. The current model can provide the quick and inexpensive analysis tools to the production engineer with reasonable accuracy.
Tae-Il Kim,Dong-Hyun Lim,Tai-Young Hur,Seung-Min Ha,Hyun-Jong Kim,Seong-Min Park,Ji-Hoo Park,Sang-Bum Kim,Ji-Hwan Lee,Hyun-Joo Lim,Jeong-Sung Jung,Ha-Yeon Jeong,Jay Lee,Kwang-Seok Ki,Vijayakumar Mayak 경상대학교 농업생명과학연구원 2019 농업생명과학연구 Vol.53 No.4
An experiment was carried out to assess the effect of feed selenium-lysine (Se-Lys) supplementation on milk compositions and serum biochemical indices in Saanen dairy goats in Korea. A total of twelve 36 months old Saanen lactating dairy goats (47±6.21 kg) fed the similar dry matter intake twice a day at 2% of BW (DMI) (10.9% moisture of concentrate and 19% moisture of roughage), milk yield (2.5 kg/d) and parity (2) were randomly selected and subjected for the present study, divided into two groups with six goats in each group. The goats in the control group received rice hulls (10 g/ day) only, and did not receive Se-Lys; goats in the treatment group were fed 0.06 g of Se-Lys with 10 g of rice hulls every day before feeding roughage for six weeks. The milk sample was collected every week, and its compositions were analyzed. The results of the present study showed that there is no significantly increased milk production in Se-Lys treated group goats when compared with control group goats. But, Se-Lys treatment significantly increased the milk protein content (3.98±0.16%), fat (3.72±0.27%), lactose (4.07±0.14%), total solids (12.51±0.28%) and urea (14.42±1.45 mg/dl) content as compared to the control group goats (p<0.05). The somatic cell counts (207,740±28.81 cells/ml) were significantly lower in the Se-Lys treated group than in the control group (p<0.05). Also, the results of the current study showed that supplementation of Se-Lys were significantly decreased the blood biochemical indices of IL-6 (34.34±6.04 pg/ml), TNT-α (0.56±0.22 ng/ml), MDA (5.07±1.03 ng/ml), GPx-1 (9.07±5.17 ng/ml), sCD4 (2.64±1.02 ng/ml) and sCD8 (5.08±2.08 ng/ml) level when compared with without addition of Se-Lys group dairy goats (p<0.05). On the other hand, the selenoprotein P (1,580.18±127.62 ng/ml) level was significantly higher in Se-Lys supplemented group than in the control group (p<0.05). Based on the study results, it was concluded that feed Se-Lys supplementation may improve milk yield with positively improved protein, fat, lactose, total solids, urea content, and biochemical indices without negative effects on milk production traits.
유아 무용 교육이 유아의 긍정적 자아개념에 미치는 영향
이광욱,조연숙,정일호,강성환 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4
The purpose of this study was to examine through 24weeks whether dance education with 6-year old preschool-Kindergarten may increase positive self-concepts. The results of analysis of self-concept's change that the dance education served K kindergarten and not in the S kindergarten in Seoul were as follows. 1. There is a statistically significant relation of the generally satisfactory self-concepts between the two preschool-Kindergarten groups(P<0.05). It means that the development of satisfactory self-concepts are generally influenced by dance education programs. 2. There was no statistically significant relation of the same-aged children's self-concepts between the two preschool-Kindergarten groups (P>0.05). It means that the same-age children's self-concepts are not influenced effectively by dance education programs. 3. There was no statistically significant relation of the children's self-concepts about their teachers and kindergartens between the preschool-Kindergarten groups(P<0.05). It means that their teachers and kindergartens the children's self-concepts are not influenced effectively by dance education programs. 4. There was no statistically significant relation of the children's self-concepts about their classes between the two preschool-Kindergarten groups(P<0.05). It means that the children's self-concepts about their classes are not influenced by dance education programs. 5. There was no statistically significant relation of the children's self-concepts about their physical exercises between the two preschool-Kindergarten groups(P<0.05). It means that the children's self-concepts about their physical exercises are not influenced by dance education programs.
강섬유보강 콘크리트 슬래브의 내력 및 균열특성에 관한 실험적 연구
박승범,조광연,장석호,김부일 忠南大學校 産業技術硏究所 1997 산업기술연구논문집 Vol.12 No.2
This Study is aimed to investigate the effect of load and deflection on steel fiber reinforced concrete slab. Slabs were made with Hooked and Straight types steel fiber and compared a change of steel fiber contents and fiber type. Test were carried out to evaluate the first crack load, maximum load and deflection of slab. AT this result, the first crack load, maximum load and energy absorption capacity were increased remarkably as steel fiber contents were increased. And we found that the deflection of slab at same load were decreased as steel fiber contents were increased, too. As the aspect ratio was increased, the first crack load, maximum load and energy absorption capacity were increased.
열처리 조건이 시금치의 이화학적 특성 및 영양 조성에 미치는 효과
이지선, 황인국, 유선미, 민상기, 김광일, 조연지, 최미정 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.1
This study investigated the effect of thermal treatment (blanching) conditions on the physicochemical and nutritional properties of spinach. For thermal treatments, fresh spinach was treated by three blanching methods including boiled water, steam and pan frying treatments. At the varying time intervals of treatments, pH, color, shear force, proximate composition, organic acid content, peroxidase activity and microbial counts were evaluated. The pH of all treatments tended to increase with increasing blanching time, however, no significant differences among treatments were obtained. The shear force of spinach decreased with blanching time, particularly hot water treatment showed the rapid decrease in the shear force of spinach. The lightness of spinach showed similar pattern with shear force. For proximate compositions, the highest moisture content was found in hot water treatment, while crude protein and ash were highest in steam treatment. Due to the usage oil, pan frying treatment involved in the highest lipid content. The organic acid content treatment was in the order of hot water, pan frying and steam treatment. The thermal treatments attributed to low total plate count of spinach. In addition, thermophilic bacteria, coliform, mold and yeast were not detected in all thermal treatments. Peroxidase activity was lowered by applied thermal treatments. Based on the results, the best blanching condition for spinach was found in steam treatment for 60 s where the spinach showed the minimal changes in physicochemical and nutritional properties of spinach.
FAST MODULAR MULTIPLICATION ALGORITHM FOR RSA CRYPTOPROCESSOR IMPLEMENTATION
Yeon, Kwang Il,Kim, Ig Kyun,Choi, Hae Wook,Lee, Jin Hyo 대한전자공학회 1989 ICVC : International Conference on VLSI and CAD Vol.1 No.1
Modular multiplication is considered as a bottleneck when implementing the RSA method using hardware. In another words, the throughput and the hardware quantity of RSA cryptoprocessor depend upon execution algorithm of modular multiplication. This paper will propose the fast modular multiplication algorithm that can implement the RSA cryptoprocessor using single-chip improving the throughput up to several tens Kbps.