http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Characterization of Protein Arginine Methyltransferases in Porcine Brain
Hung, Chien-Jen,Chen, Da-Huang,Shen, Yi-Ting,Li, Yi-Chen,Lin, Yi-Wei,Hsieh, Mingli,Li, Chuan Korean Society for Biochemistry and Molecular Biol 2007 Journal of biochemistry and molecular biology Vol.40 No.5
Protein arginine methylation is a posttranslational modification involved in various cellular functions including cell signaling, protein subcellular localization and transcriptional regulation. We analyze the protein arginine methyltransferases (PRMTs) that catalyze the formation of methylarginines in porcine brain. We fractionated the brain extracts and determined the PRMT activities as well as the distribution of different PRMT proteins in subcellular fractions of porcine brain. The majority of the type I methyltransferase activities that catalyze the formation of asymmetric dimethylarginines was in the cytosolic S3 fraction. High specific activity of the methyltransferase was detected in the S4 fraction (high-salt stripping of the ultracentrifugation precipitant P3 fraction), indicating that part of the PRMT was peripherally associated with membrane and ribosomal fractions. The amount and distribution of PRMT1 are consistent with the catalytic activity. The elution patterns from gel filtration and anion exchange chromatography also indicate that the type I activity in S3 and S4 are mostly from PRMT1. Our results suggest that part of the type I arginine methyltransferases in brains, mainly PRMT1, are sequestered in an inactive form as they associated with membranes or large subcellular complexes. Our biochemical analyses confirmed the complex distribution of different PRMTs and implicate their regulation and catalytic activities in brain.
Shih-Ming Wang,Chien-Da Ho,Po-Cheng Tsai,Chuntai Yen 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.
If machining abnormalities, such as build-up-edge and cutter breakage, occur during machining, serious damage on the workpiecesurface and deterioration of production efficiency will happen, and cause additional energy consumption for rework and increase themanufacturing cost. To minimize the effects, an on-line diagnosis method with use of Fast Fourier Transform and algorithm of shorttimesignal variation analysis was developed to analyze the vibration signals to quickly detect the two abnormalities in this study. Inaddition, the real-time machining information from CNC controller was extracted through a bi-lateral communication module toprevent misdiagnosis. The control commands were automatically generated by the proposed system and directly sent to the CNCcontroller to stop the machine for cutter replacement. Without complex computation, the system can detect the occurrence of BUEor cutter breakage within 1 second and complete machine control within 3 seconds. The system can instantly transmit and save thereal machining information and diagnosis/control results to the remote central monitoring platform for further process improvement. With use of TCP/IP communication protocol the central monitoring platform can remote log into the on-site monitoring computer todirectly operate the diagnosis/control system. Experimental results showed the feasibility and effectiveness of the proposed system.
Effects of post anneal for the INZO films prepared by ultrasonic spray pyrolysis
Lan, Wen-How,Li, Yue-Lin,Chung, Yu-Chieh,Yu, Cheng-Chang,Chou, Yi-Chun,Wu, Yi-Da,Huang, Kai-Feng,Chen, Lung-Chien Techno-Press 2014 Advances in nano research Vol.2 No.4
Indium-nitrogen co-doped zinc oxide thin films (INZO) were prepared on glass substrates in the atmosphere by ultrasonic spray pyrolysis. The aqueous solution of zinc acetate, ammonium acetate and different indium sources: indium (III) chloride and indium (III) nitrate were used as the precursors. After film deposition, different anneal temperature treatment as 350, 450, $550^{\circ}C$ were applied. Electrical properties as concentration and mobility were characterized by Hall measurement. The surface morphology and crystalline quality were characterized by SEM and XRD. With the activation energy analysis for both films, the concentration variation of the films at different heat treatment temperature was realized. Donors correspond to zinc related states dominate the conduction mechanism for these INZO films after $550^{\circ}C$ high temperature heat treatment process.