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국기원태권도연구
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3^ 4^ 5세 유아의 도형인식능력에 관한 연구
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청소년의 SNS 활동이 집단지성에 미치는 영향 : 공동체의식을 매개로 = The Effects of Youths’ Social Media Activities on Collective Intelligence: The Mediating Effect of Sense of Community
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휘트니스센터의 물리적 환경이 재등록 의사에 미치는 영향에 관한 연구
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IUI CONFERENCE REPORTS
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The discovery of polyacetylene film: The dawning of an era of conducting polymers
- 검색키워드
- 저자 : S. P. Zhan (검색결과 5 건)
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Li, P.F.,Xue, L.F.,Zhang, R.F.,Piao, Xiangshu,Zeng, Z.K.,Zhan, J.S. Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.10
A total of 629 Duroc${\times}$Landrace${\times}$Large White crossbred pigs were utilized in three experiments (Exp. 1, 222 pigs weighing $25.6{\pm}2.0\;kg$ BW; Exp. 2, 216 pigs weighing 5$6.2{\pm}4.3\;kg$ BW; Exp. 3, 191 pigs weighing $86.4{\pm}4.6\;kg$ BW) conducted to determine the effects of fermented potato pulp on performance, nutrient digestibility, carcass traits and plasma parameters in growingfinishing pigs. Each experiment lasted 28 d. The pigs were assigned to one of two corn-soybean meal-based diets containing 0 or 5% fermented potato pulp. The inclusion of fermented potato pulp increased weight gain (p<0.05) in experiments 1 and 2 and increased feed intake (p<0.05) in experiment 2. Feed conversion was improved (p<0.05) in experiment 2 and showed a tendency to improve (p<0.10) in experiments 1 and 3 when pigs were fed fermented potato pulp. Fermented potato pulp increased (p<0.05) dry matter digestibility in experiments 1 and 3 and energy digestibility in experiment 2. Feeding fermented potato pulp decreased plasma urea nitrogen (p<0.05) and alanine aminotransferase (p<0.05) in experiments 1 and 2, while plasma aspartate aminotransferase was decreased (p<0.05) in experiment 3. Dietary fermented potato pulp did not affect the carcass characteristics of finishing pigs. Feeding fermented potato pulp reduced (p<0.05) fecal ammonia concentration in all three experiments. In conclusion, feeding growing-finishing pigs diets containing 5% fermented potato pulp improved weight gain and feed conversion without any detrimental effects on carcass traits. The improvements in pig performance appeared to be mediated by improvements in nutrient digestibility.
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R.X. Zhao,C.H. Cai,P. Wang,L. Zheng,J.S. Wang,K.X. Li,W. Liu,X.Y. Guo,X. A. Zhan,K.Y. Wang 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.6
Objective: The study was conducted to evaluate the effects of night light regimen on growth performance, antioxidant status and health of Lingnan Yellow broiler chickens from 1 to 21 days of age. Methods: A completely randomized factorial design involved 2 photoperiods (constant lighting [CL], 24 L:0 D and intermittent lighting [INL], 17 L:3 D:1 L:3 D)×2 light intensities (10 lx and 30 lx). A total of one thousand six hundred and eighty 1-d-old Lingnan Yellow broiler chicks were randomly divided into 4 treatments with 6 replicates (70 birds per replicate). The experiment lasted for 21 d. Results: Photoperiods and light intensities had no effect on average daily gain, feed conversion ratio, and mortality of the broiler chickens (p>0.05). The INL had a significant effect on average daily feed intake (p<0.05) of broiler chickens compared with CL. Photoperiod and light intensity had an interactive effect on melatonin (MT) concentration (p<0.05). At CL, reducing light intensity increased MT concentration; INL birds had higher MT but MT concentration was not affected by light intensity. There was an interactive effect on glutathione peroxidase (GPx) and catalase (CAT) in serum and total antioxidant capability (T-AOC) in liver between photoperiod and light intensity. With the decrease of light intensity, the activities of GPx and CAT in serum and T-AOC in liver increased in CL group (p<0.05). Broiler chickens reared under INL had better antioxidant status and 10 lx treatments had higher activities of CAT in serum than 30 lx (p<0.05). Different photoperiods and light intensities had no effect on malondialdehyde. There was an interaction between photoperiod and light intensity on serum creatine kinase (CK) concentration (p<0.05). At CL, the elevated light intensity resulted in an increase in CK content; INL birds had lower CK concentration especially in low light intensity group. Besides, INL and low light intensity significantly reduced the concentration of serum corticosterone and heat shock protein 70 (p<0.05). Serum immunoglobulin M contents were increased in broiler chickens reared under the INL compared with CL group (p<0.05). Conclusion: Results above suggest that the night light regimen of INL and 10 lx could be beneficial to the broiler chickens from 1 to 21 days of age due to the better health status and electricity savings.
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Magnetoelectric complex-oxide heterostructures
Ramesh, R.,Zavaliche, F.,Chu, Y. H.,Martin, L. W.,Yang, S. Y.,Cruz, M. P.,Barry, M.,Lee, K.,Yang, P.,Zhan, Q. Taylor and Francis 2007 Philosophical magazine letters Vol.87 No.3
<P> A short review of recent progress in the field of multiferroic thin films and heterostructures is given. We focus on the bismuth iron oxide system due to its desirable properties, namely high ferroelectric Curie temperature and antiferromagnetic Neel temperature. Epitaxial growth of this model system in various crystallographic orientations has conclusively demonstrated the large ferroelectric polarization in this system. Piezoforce microscopy reveal a complex domain structure, especially on (100) SrTiO3 substrates. Electrical switching experiments show the co-existence of 71°, 109° and 180° domain switching mechanisms in such films. Preliminary work has shown promise for electrically controllable exchange bias in ferromagnet-multiferroic heterostructures.</P>
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Epitaxial Multiferroic BiFeO3 Thin Films: Progress and Future Directions
Chu, Y. H.,Martin, L. W.,Zhan, Q.,Yang, P. L.,Cruz, M. P.,Lee, K.,Barry, M.,Yang, S. Y.,Ramesh, R. Taylor Francis 2007 Ferroelectrics Vol.354 No.1
<P> We write this article in honor of Professor Vitaly L. Ginzburg, truly the father of the field of ferroelectricity. This article serves as a review of the current state of research pertaining to multiferroic BiFeO3 thin films. In this review we will delve into details of the growth of BiFeO3 thin films and the use of piezoforce microscopy and x-ray reciprocal space mapping to characterize the crystal structure and domain structure of BiFeO3. We will also discuss the use of vicinal and asymmetric substrates to simplify the domain structure in BiFeO3. By simplifying the domain structure we can, in turn, control the ferroelectric switching mechanisms in BiFeO3. Finally we describe the basic ferroelectric properties of BFO films and discuss the critical issues needed to be solved in BiFeO3 films including leakage, complex domain structure, coercivity, and reliability. Such results are promising for continued exploration for detailed multiferroic-coupling studies in the magnetoelectric BiFeO3 system and BiFeO3, in turn, provides a model platform with which to realize the exciting possibility of electrically control magnetism.</P>
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X. S. Luo,J. Li,Y. L. Jin,C. P. Hu,D. Jia,S. P. Zhan,Y. Yu,M. Hua,H. T. Duan 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.8
Tribological properties of AlCoCrCuFeNi high-entropy alloy were studied after annealing at various temperatures. X-raydiffraction, scanning electron microscopy, energy dispersive spectroscopy, microhardness tester and pin-on-disc tribometeranalyses were performed to reveal the microstructure, composition, microhardness and tribological behavior variations. Withthe heat treatment temperature increasing, time taken for friction coefficient going through the rapidly dropping down andthen into the stable period increases, the white sheets structures and their size in dendrite area of the AlCoCrCuFeNi alloybecomes bigger, however BCC content declined dramatically. Then, the average friction coefficient of the AlCoCrCuFeNi/Si3N4 sliding friction pair increase from 0.037 to 0.115, and the pin wear loss increase from 3 to 11 μm.
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