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Cloning, expression and functional analysis of the duck Toll-like receptor 5 (TLR5) gene
Yuqiang Cheng,Yingjie Sun,Hengan Wang,Shuduan Shi,Yaxian Yan,Jing Li,Chan Ding,Jianhe Sun 대한수의학회 2015 Journal of Veterinary Science Vol.16 No.1
Toll-like receptor 5 (TLR5) is responsible for the recognition of bacterial flagellin in vertebrates. In the present study, the first TLR5 genein duck was cloned. The open reading frame (ORF) of duck TLR5 (dTLR5) cDNA is 2580 bp and encodes a polypeptide of 859 amino acids. We also cloned partial sequences of myeloid differentiation factor 88, 2’-5’-oligoadenylate synthetase (OAS), and myxovirus resistance (Mx)genes from duck. dTLR5 mRNA was highly expressed in the bursa of Fabricius, spleen, trachea, lung, jejunum, rectum, and skin; moderatelyexpressed in the muscular and glandular tissues, duodenum, ileum, caecum, and pancreas; and minimally expressed in the heart, liver, kidney,and muscle. DF-1 or HeLa cells transfected with DNA constructs encoding dTLR5 can activate NF-B leading to the activation of interleukin-6(IL-6) promoter. When we challenged ducks with a Herts33 Newcastle disease virus (NDV), mRNA transcription of the antiviral moleculesMx, Double stranded RNA activated protein kinase (PKR), and OAS was up-regulated in the liver, lung, and spleen 1 and 2 dayspost-inoculation.
Study of Heat Source Calibration and Modelling for Laser Welding Process
Changrong Chen,Yueh-Jaw Lin,Hengan Ou,Yan Wang 한국정밀공학회 2018 International Journal of Precision Engineering and Vol.19 No.8
Heat source model is an important part when carrying out simulations of welding processes. The calibration process involves a great amount of numerical simulations or theoretical deductions with many simplifications. In this paper, an interaction finite element and optimization algorithm package is programmed to automatically calibrate heat source models. The results are then used to establish mathematical relationships between parameters of heat source and welding process variables. The models show that the absorption efficiency and depth of heat source are exponential functions of depth of focus and laser power, respectively while radius of heat source is determined by depth of focus quadratically.