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This study aimed at examining the association of the single nucleotide polymorphism (SNP) in the protein tyrosine phosphatase gene (PTPN22) with the risk of rheumatoid arthritis (RA) in a Chinese population. A total of 200 RA patients and age and gender‐matched healthy controls were recruited. Their genotypes and allelic frequency were determined by the TaqMan‐MGB probe‐based polymerase chain reaction...
Carrier mobility in polymers has been investigated using various experimental techniques which can be broadly classified into “fast” and “slow” techniques. The distinction is simply made by the time scale of the measurement; microseconds vs. seconds to hours. Reports have shown that these types of techniques yield vastly different mobility values. For example, Hayashi, et al. (1), using 0.1 microsecond...
Significant negative ionic space charge occur in PET films poled by fields as low as 0.14 MV/em at 420°K. The negative charge lies adjacent to the anode and results in a highly distorted electric field distribution which, at the anode, can be several times greater than the applied field strength. The anode is blocking to this negative ionic charge which can be discharged primarily by carrier movement...
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