Takayuki Imada

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Peripheral blood (PB)-derived CD14+ monocytes were shown to transdifferentiate into endothelial cell (EC) lineage cells and contribute to neovascularization. We investigated whether bone marrow (BM)- or PB-derived CD34-/CD14+ cells are involved in reendothelialization after carotid balloon injury. Although neither hematopoietic nor mesenchymal stem cells(More)
In this paper, we propose a software testing environment, called D-Cloud, using cloud computing technology and virtual machines with fault injection facility. Nevertheless, the importance of high dependability in a software system has recently increased, and exhaustive testing of software systems is becoming expensive and time-consuming, and, in many cases,(More)
In this paper, we propose a scheme based on server node state control, including stand-by/wake-up and processor power control, to achieve aggressive power education while satisfying Quality of Service (QoS). Decreasing power consumption on Web servers is currently a challenging new problem to be solved in a data center or warehouse. Although Web servers are(More)
We previously reported that the reinfection rate with Helicobacter pylori in Japan was low despite a high prevalence of infection. In the present study, we extended our previous work to more accurately determine the reinfection rate. We enrolled 1625 patients (219 women and 1406 men, mean age 50.8 years) who had received H. pylori eradication therapy. After(More)
Various information systems are widely used in information society era, and the demand for highly dependable system is increasing year after year. However, software testing for such a system becomes more difficult due to the enlargement and the complexity of the system. In particular, it is too difficult to test parallel and distributed systems sufficiently(More)
BACKGROUND/AIMS The prevalence of reflux esophagitis, which might lead to development of Barrett's esophagus and esophageal adenocarcinoma, has been increasing. The aim of this study was to assess risk factors for reflux esophagitis. METHODS We conducted a cross-sectional study of 1,495 Japanese subjects undergoing health checkups (822 males and 673(More)
Of patients with severe exacerbation of chronic hepatitis B accompanied by jaundice and coagulopathy, 20%-30% have a fatal outcome. In this report, we describe 2 cases of severe exacerbation of chronic hepatitis B with jaundice and coagulopathy who were successfully treated with a combination of entecavir and corticosteroid. In both cases, rapid reductions(More)
The in vitro and in vivo antibacterial activities of OPC-17116 were compared with those of ofloxacin, enoxacin, ciprofloxacin, and tosufloxacin. The MICs of OPC-17116 for 90% of the strains tested were 0.125 to 8 micrograms/ml against gram-positive bacteria such as members of the genera Staphylococcus, Streptococcus, and Enterococcus: less than or equal to(More)
Background(1) • Embedded systems with complicated functions are widely used. ֜ These systems require increasingly higher performance. • But, the power consumption of embedded systems must be reduced „ To extend the operating time of mobile devices „ To realize more environmentally friendly products • Multicore technology has been introduced also for(More)
Recently, improving the energy efficiency of high performance PC clusters has become important. In order to reduce the energy consumption of the microprocessor, many high performance microprocessors have a Dynamic Voltage and Frequency Scaling (DVFS) mechanism. This paper proposes a new DVFS method called the Code-Instrumented Runtime (CIRuntime) DVFS(More)