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BACKGROUND: Recent studies have found circular RNAs (circRNAs) involved in the biological process of cancers. However, little is known about their functional roles in glioblastoma. METHODS: Human circRNA microarray analysis was performed to screen the expression profile of circRNAs in IDH1 wild‐type glioblastoma tissue. The expression of hsa_circ_0008344 in glioblastoma and normal brain samples was quantified by qRT‐PCR. Functional experiments were performed to investigate the biological functions of hsa_circ_0008344, including MTT assay, colony formation assay, transwell assay, and cell apoptosis assay. RESULTS: CircRNA microarray revealed a total of 417 abnormally expressed circRNAs (>1.5‐fold, P

In this article, the RIE process has been improved, a polymer arrayed waveguide grating (AWG) multiplexer with flat spectral response have been designed and fabricated using FPE polymer materials. Using the steam-redissolution technique, the insertion loss and the crosstalk have been reduced. Experimental results show that the central wavelength is 1550.86 nm, and 3-dB bandwidth is about 0.478 nm, insertion loss is 10.5 dB, crosstalk is about −20.5 dB. The insertion loss of an AWG device is reduced by about 3 dB for the central channel and 4.5 dB for the edge channels, and the crosstalk is reduced by 1.5 dB after the steam-redissolution. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2199–2201, 2013