28 research outputs found

    Self-joining of Y-TZP by flash event under an AC electric field

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    Growth and structure analysis of tungsten oxide nanorods using environmental TEM

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    WO3 nanorods targeted for applications in electric devices were grown from a tungsten wire heated in an oxygen atmosphere inside an environmental transmission electron microscope, which allowed the growth process to be observed to reveal the growth mechanism of the WO3 nanorods. The initial growth of the nanorods did not consist of tungsten oxide but rather crystal tungsten. The formed crystal tungsten nanorods were then oxidized, resulting in the formation of the tungsten oxide nanorods. Furthermore, it is expected that the nanorods grew through cracks in the natural surface oxide layer on the tungsten wire

    Severe Colitis Associated with both Epstein-Barr Virus and Cytomegalovirus Reactivation in a Patient with Severe Aplastic Anemia

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    Epstein-Barr virus (EBV) and cytomegalovirus (CMV) are members of the herpesvirus family and common causes of viral infection in humans. CMV infection of the gastrointestinal tract occurs mainly in immunocompromised individuals, on the other hand EBV infection and reactivation involving the gastrointestinal tract is very rare. A 56-year-old man was diagnosed with severe aplastic anemia and treated with antithymocyte globulin (ATG) and cyclosporine (CSP). After 2 years of ATG/CSP therapy, he suddenly started passing bloody diarrhea and developed a high fever despite CSP treatment. Endoscopic features included severe edema and multiple superficial ulcers; the patient was initially diagnosed with severe colitis resembling inflammatory bowel disease (IBD). However, his symptoms did not resolve with steroid treatment. Immunohistochemical analysis of samples obtained from a second colonoscopy showed cells positive for CMV, and in situ hybridization revealed EBV-encoded small RNA-1-positive cells. Additionally, the patient's serum was positive for C7-HRP, and both blood and colon tissues were positive for EBV DNA, which was detected using PCR analysis. We finally diagnosed the patient with colitis associated with reactivation of both CMV and EBV. The patient remains diarrhea-free after 1.5 years with scheduled globulin treatment and after cessation of immunosuppressive drug therapy. To our knowledge, this is the first reported case of an immunodeficient patient with severe hemorrhagic colitis that was associated with reactivation of both EBV and CMV, and whose endoscopic findings mimicked IBD

    Demonstration of High-Speed Data Replication Relay Across Multiple Repository Sites Using a Global Loop Path

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    Technical verification has been progressing for high efficiency data replication between ITER and the Remote Experimentation Centre (REC) in Japan. Transferring a huge amount of data simultaneously to multiple destinations might cause excessive loads and network bandwidth on the sender so that daisy-chained relay transfer would be a considerable solution. This study demonstrates how efficiently the replication relay could be realized for the next-generation fusion experiments, such as ITER and JT-60SA. All the LHD data were consecutively sent to the REC through the global loop path (GLP: Toki - Gifu - Tokyo - Amsterdam - New York - Los Angeles - Tokyo - Aomori - Rokkasho) on SINET5 L2VPN, whose round-trip time is almost 400 ms. MMCFTP was used for the data transferring application. In both the Japan domestic path and the GLP cases, every transfer shows a very stable flattop speed as the preset 8 Gbps. However, longer gap times were needed in MMCFTP initial negotiation to establish numerous sessions. The performance optimized NVMe and iSCSI striped storages have shown higher throughputs than the ITER estimated initial data rate of 2 GB/s. Those knowledge enable the design optimization of not only the sender/receiver servers with their storages but also the intermediate relay server system
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