• Title/Summary/Keyword: science laboratory

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Nonvolatile Vortex Random Access Memory

  • Kim, Sang-Koog;Yu, Young-Sang;Lee, Ki-Suk;Jung, Hyun-Sung;Choi, Youn-Seok;Lee, Jun-Young;Yoo, Myoung-Woo;Han, Dong-Soo;Im, Mi-Young;Fischer, Peter
    • Proceedings of the Korean Magnestics Society Conference
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    • 2010.06a
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    • pp.15-16
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    • 2010
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Biological Parameters of Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) Fed on Rabbits, Sheep, and Cattle

  • Ma, Miling;Chen, Ze;Liu, Aihong;Ren, Qiaoyun;Liu, Junlong;Liu, Zhijie;Li, Youquan;Yin, Hong;Guan, Guiquan;Luo, Jianxun
    • Parasites, Hosts and Diseases
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    • v.54 no.3
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    • pp.301-305
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    • 2016
  • In order to determine the effect of various hosts on feeding performance of Rhipicephalus (Boophilus) microplus, we used 3 mammalian species as hosts, cattle (Qinchuan), sheep (Tan), and rabbits (Japanese white rabbit) for infesting ticks. Five hundreds of R. microplus larvae were exposed to each animal (3 animals/host species). Tick recoveries were 11.0%, 0.47%, and 5.5% from cattle, sheep, and rabbits, respectively. The averages of tick feeding periods were not significantly different on cattle, sheep, and rabbits, 28.8, 25.3, and 26.7 days, respectively. The average weights of individual engorged female from cattle, sheep, and rabbits were 312.5, 219.1, and 130.2 mg, respectively and those of egg mass weights each to 85.0, 96.6, and 17.8 mg. The highest egg hatching rate was in the ticks from cattle (96.0%), followed by those from rabbits (83.0%) and sheep (19.2%). These data suggest that rabbits could be as an alternative host to cultivate R. microplus for evaluating vaccines and chemical and biological medicines against the tick in the laboratory, although the biological parameters of ticks were less than those from cattle.

Development of the vapor film thickness correlation in porous corrosion deposits on the cladding in PWR

  • Yuan Shen;Zhengang Duan;Chuan Lu ;Li Ji ;Caishan Jiao ;Hongguo Hou ;Nan Chao;Meng Zhang;Yu Zhou;Yang Gao
    • Nuclear Engineering and Technology
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    • v.54 no.12
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    • pp.4798-4808
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    • 2022
  • The porous corrosion deposits (known as CRUD) adhered to the cladding have an important effect on the heat transfer from fuel rods to coolant in PWRs. The vapor film is the main constituent in the two-phase film boiling model. This paper presents a vapor film thickness correlation, associated with CRUD porosity, CRUD chimney density, CRUD particle size, CRUD thickness and heat flux. The dependences of the vapor film thickness on the various influential factors can be intuitively reflected from this vapor film thickness correlation. The temperature, pressure, and boric acid concentration distributions in CRUD can be well predicted using the two-phase film boiling model coupled with the vapor film thickness correlation. It suggests that the vapor thickness correlation can estimate the vapor film thickness more conveniently than the previously reported vapor thickness calculation methods.

Cloning of Chicken Microsomal Glutathione S-transferase 1 Gene (MGST1) and Identification of Its Different Splice Variants

  • Wang, X.-T.;Zhang, H.;Zhao, C.-J.;Li, J.-Y.;Xu, G.-Y.;Lian, L.-S.;Wu, C.-X.;Deng, Xuemei
    • Asian-Australasian Journal of Animal Sciences
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    • v.22 no.2
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    • pp.155-161
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    • 2009
  • Mammal microsomal glutathione transferase 1 (MGST1) can conjugate many toxic or carcinogenic substances and depress oxidative stress. In this study, Chicken MGST1 and its variants were cloned for the first time and were composed of 956 or 944 nucleotides. The 12 nt deletion in the exon 2 did not alter the GT-AG rule and the ORFs for the two MGST1 variants were the same, which both comprised 465 nucletides and encoded a peptide with 155 amino acids. It was found that the two different splice variants identified using RT-PCR expressed in all three organs investigated of Dwarf Brown Chicken, namely liver, spleen and shell gland. Moreover, the expression level of MGST1 mRNA in the liver of Dwarf Brown chickens was the highest (p<0.01), and there were no significant differences between the spleen and the shell gland. These results provide a base for studying the biological function of Chicken MGST1.

Hydrogen Passivation for the Enhancement of Poly-Si Performance Crystallized By Double-Frequency YAG Laser

  • Li, Juan;Chong, Luo;Ying, Yao;He, Li;Meng, Zhiguo;Chunya, Wu;Xiong, Shaozhen;Kwok, Hoi-Sing
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1608-1611
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    • 2009
  • Here the hydrogen passivation treatment has been adopted to enhance the performance of poly-Si crystallized by YAG laser annealing (LA poly-Si). We have investigated the effects of passivation time, passivation power and passivation temperature on the hall mobility of the LA poly-Si and analyzed the mechanism of the hydrogen passivation preliminary. It has been found that the quality of the poly-Si annealed by YAG laser could be improved after proper hydrogen plasma treatment.

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