Junki Yamaguchi

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We have developed a low-power and high- sensitivity cloud profiling radar, named FALCON-I, transmitting frequency modulated continuous wave (FM-CW) at 95 GHz for ground-based observations. Millimeter wave at 95 GHz is used to realize much higher sensitivity than lower frequencies to small cloud particles. An FM-CW type radar realizes similar sensitivity(More)
We propose SLCCFF which is a radiation hardened non-redundant flip-flop for an SOI process. The SLCCFF has the stacked structure to prevent soft errors on SOI processes while maintaining smaller delay and power overhead than conventional stacked FFs. Energy delay product of SLCCFF is 86% of the stacked FF. We fabricate test chip in a 65 nm thin BOX FDSOI(More)
Biodiesel-contaminated wastewater was used to screen for PHAs-producing bacteria by using crude glycerol as the sole carbon source. A gram-negative THA_AIK7 isolate was chosen as a potential PHAs producer. The 16S rRNA phylogeny indicated that THA_AIK7 isolate is a member of Novosphingobium genus which is supported by a bootstrap percentage of 100% with(More)
This paper analyzes how body bias and BOX region thickness affect soft error rates in 65-nm SOTB (Silicon on Thin BOX) and 28-nm UTBB (Ultra Thin Body and BOX) FD-SOI processes. Soft errors are induced by alpha-particle and neutron irradiation and the results are then analyzed by Monte Carlo based simulation using PHITS-TCAD. The alpha-particle-induced(More)
We estimate the SERs of 65-nm SOTB(Silicon on Thin BOX) and 28-nm UTBB(Ultra Thin Body and BOX) FD-SOI processes by decreasing the supply voltage. Alpha, neutron irradiation experiments and Monte-Carlo based simulations are compared in this work. The SERs can be analyzed by the simulation tool with only layout pattern of test chips. The simulation results(More)
We propose a radiation-hard layout structure to control back-gate biases for thin-BOX FDSOI. The structure with fixed back-gate bias has strongest against soft errors, while the structure with P+ and N+ diffusions under power and ground rails makes flip-flops stronger against soft errors with back-gate bias controllability than the conventional structure(More)
Little information is available regarding the effectiveness of water disinfection by CO2 at low pressure. The aim of this study was to evaluate the use of high levels of dissolved CO2 at 0.3–0.6 MPa for the inactivation of microorganisms. Bacteriophage T4 was chosen as the model virus and Escherichia coli was selected as the representative bacterium. The(More)
We have developed a low-power and high-sensitivity cloud profiling radar, named FALCON-I, transmitting frequency modulated continuous wave (FM-CW) at 95 GHz for ground-based observations. Millimeter wave at 95 GHz is used to realize much higher sensitivity than lower frequencies to small cloud particles. An FM-CW type radar realizes similar sensitivity with(More)
Studying the vertical structure of cloud is essential to make better atmospheric modellings for simulations of the global warming. Cloud observation requires very high sensitivity for radar. Although pulse radar is the mainstream of MMCR (millimeter wave cloud radar), FMCW radar has some advantages. FMCW signal has high spatial and time resolution, and(More)
We estimate SERs of FD-SOI structures according to the thicknesses of BOX (Buird OXide) layer on 65-nm and 28-nm processes by reducing supply voltage. Alpha, neutron irradiation experiments and Monte-Carlo based simulations are compared in this work. The SOTB (Silicon on Thin BOX) and the UTBB (Ultra Thin Body and BOX) structures are evaluated in the(More)
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