Multi-Cycle Test with Partial Observation on Scan-Based BIST Structure

Field test for reliability is usually performed with small amount of memory resource, and it requires a new technique which might be somewhat different from the conventional manufacturing tests. This paper proposes a novel technique that improves fault coverage or reduces the number of test vectors that is needed for achieving the given fault coverage on scan-based BIST structure. We evaluate a multi-cycle test method that observes the values of partial flip-flops on a chip during capture-mode. The experimental result shows that the partial observation achieves fault coverage improvement with small hardware overhead than the full observation.2011 Asian Test Symposium (ATS), 20-23 Nov. 2011, New Delhi, Indi

Recombining Plasma and Hard X-ray Filament in the Mixed-Morphology Supernova Remnant W44

We report new features of the typical mixed-morphology (MM) supernova remnant (SNR) W44. In the X-ray spectra obtained with Suzaku, radiative recombination continua (RRCs) of highly ionized atoms are detected for the first time. The spectra are well reproduced by a thermal plasma in a recombining phase. The best-fit parameters suggest that the electron temperature of the shock-heated matters cooled down rapidly from $\sim1$,keV to $\sim 0.5$,keV, possibly due to adiabatic expansion (rarefaction) occurred $\sim20,000$ years ago. We also discover hard X-ray emission which shows an arc-like structure spatially-correlated with a radio continuum filament. The surface brightness distribution shows a clear anti-correlation with $^{12}$CO (J=2-1) emission from a molecular cloud observed with NANTEN2. While the hard X-ray is most likely due to a synchrotron enhancement in the vicinity of the cloud, no current model can quantitatively predict the observed flux.Comment: 10 pages, 5 figures, accepted for publication in PAS

Engineering the substrate specificity of toluene degrading enzyme XylM using biosensor XylS and machine learning

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Magnetic Properties of the Systems (Cr, Fe) Sb and (Cr, Co) Sb

Magnetic measurements were made of the systems (Cr_Sb)_(Fe_Sb)_x and (Cr_Sb)_(Co_Sb)_x. In both systems, ferromagnetism appeared in the intermediate range of x. In the (Cr, Fe) Sb system maximum of the spontaneous magnetization and the Curie temperature was found at x=0.6. However, the temperature variation of the magnetization near the Curie temperature was not so sharp as in the usual ferromagnet, and also the high field susceptibility at low temperatures was anomalously high. X-ray and neutron diffraction measurements revealed that there was no miscibility gap between ferromagnetic and antiferromagnetic phases. Mossbauer effect showed that, for x=0.8 the internal field on Fe^ nuclei was about 90 kOe, and the isomer shift (against stainless steel) was 0.54 mm/sec. The anomalous behavior of magnetization was even more pronounced in the (Cr, So) Sb system. Ferromagnetic interactions Cr-Sb-Fe and Cr-Sb-Co can well be interpreted on the basis of the Goodenough-Kanamori theory

Detection of miRNA in Cell Cultures by Using Microchip Electrophoresis with a Fluorescence-Labeled Riboprobe

The analysis of a microRNA (miRNA), miR-222 isolated from the PC12 cell line, was performed by use of the ribonuclease (RNase) protection assay, cyanine 5 (Cy5)-labeled miR-222 riboprobe, and a Hitachi SV1210 microchip electrophoresis system, which can be used to evaluate the integrity of total RNA. The fluorescence intensity corresponding to the protected RNA fragment increased in a dose-dependent manner with respect to the complementary-strand RNA. More highly sensitive detection of miRNA by microchip electrophoresis than by conventional method using fluorescence-labeled riboprobe could be obtained in 180 s. An obvious increase in miR-222 expression induced by nerve growth factor in PC12 cells could be observed. These results clearly indicate the potential of microchip electrophoresis for the analysis of miRNA using RNase protection assay with a fluorescence-labeled riboprobe