[Show abstract][Hide abstract] ABSTRACT: We have precisely measured reaction cross sections (σR) for 8Li using 9Be, 12C, 27Al, and proton targets at
intermediate energies by the transmission method. From the energy dependence of the σR including the high
energy data, the density distribution of 8Li was deduced through a modified Glauber model. It is shown that 8Li
has a shorter tail structure in the density as compared with that of 8B and the matter radius of 8Li is similar
to those of the other nonhalo Li isotopes. The result is consistent with the previous experiments that there is a
tendency for 8Li to be a skin nucleus.
Physical Review C 10/2014; 90:044321. · 3.72 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Applying permanent magnet technology to beam focusing in klystrons can reduce power consumption and increase reliability. These features benefit a variety of applications especially for large facilities that use a large number of klystrons such as the International Linear Collider. The low magnetic field needed for the purpose allows us to use inexpensive ferrite magnets instead of rare earth magnets. In order to evaluate the feasibility of such a focusing system with ferrite magnets, a test model for 750 kW L-band klystron was constructed. As a result of the power test, we attained 94% of the output power compared to an electromagnet.
[Show abstract][Hide abstract] ABSTRACT: An isomeric state in the proton drip-line nucleus 26P has been observed by the γ-ray spectroscopy. The γ-ray energy and the half-life are 164.4 ± 0.1 keV and 120 ± 9 ns, respectively. For the isomeric transition of the mirror nucleus 26Na, the γ-ray energy of 82.40 ± 0.04 keV and the half-life of 4.35 ± 0.16 μs are also revised. Comparing the experimental reduced transition probabilities of 26Na and 26P with theoretical ones calculated by the shell model with the USDA interaction, the spin-parity (Jπ) of the isomeric state in 26P is most likely to be 1+.
[Show abstract][Hide abstract] ABSTRACT: Reaction cross sections (σR) for the neutron-rich nucleus 14B on Be, C, and Al targets have been measured at several energies in the intermediate energy range of 45–120 MeV/nucleon. The present experimental σR show a significant enhancement relative to the systematics of stable nuclei. The nucleon density distribution was deduced through the fitting procedure with the modified Glauber calculation. The necessity of a long tail in the density distribution was found, which is consistent with the valence neutron in 2s1/2 orbital with the small empirical one-neutron separation energy in 14B.
[Show abstract][Hide abstract] ABSTRACT: Superconducting radio frequency (RF) is an enabling technology for the International Linear Collider (ILC); the ILC Global Design Effort has led R&D programs to push the limits of superconducting RF cavities and associated technologies. This report summarizes the progress in development for superconducting RF cavity technology during the Technical Design Phase for the ILC since 2007.
[Show abstract][Hide abstract] ABSTRACT: We compared children and adults with regard to rapid influenza test sensitivity and viral load. Specimen volumes were measured, rapid tests were conducted, and viral load was determined. There was no difference between children and adults in test sensitivity or viral load, but children had higher specimen volumes.
[Show abstract][Hide abstract] ABSTRACT: On the basis of more than 10years of experience with HIMAC, we proposed and designed a new treatment research facility, as an extension of the existing facility, for the further development of radiotherapy with HIMAC. The new facility employs a 3D rescanning technique developed at NIRS. Its building construction was completed in March 2010 and the devices are being installed. A beam commissioning and a pre-clinical study will be initiated from this October. Here, we report recent progress for this new treatment facility project at HIMAC.
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms 12/2011; · 1.19 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: The primary energy of the ultra-high energy cosmic rays(UHECR) are measured with the number of fluorescence photons which are detected with fluorescence detectors(FD) in the Telescope Array experiment(TA). Howevery since there is large uncertinty as 19% in the measurement of the energy scale, the most important theme is improvement of the energy calibration. The electron light source(ELS) is a small electron linear accelerator for new energy calibration. The ELS is located 100 m far from the FD station, and injects electron beam which is accelerated to 40 MeV energy into the sky. We can calibrate the FD energy scale by detection the air shower directly which is generated by the electron beam. The ELS was developed in KEK Japan, and moved to the TA site in March 2009. We started the beam operation in September 2010, in consequence we detected the air shower which was generated by electron beam in the air. The output kinetic energy of the electron beam was 41.1 MeV, we adjusted the output charge from 40 to 140 pC/pulse. We expect that we can improve the uncertinty of the energy scale to about 10% with the ELS, futhermore ELS will be a very useful apparatus for R and D of future UHECR observation.
[Show abstract][Hide abstract] ABSTRACT: We have developed simultaneous detection of eight genes associated with the five categories of diarrheagenic Escherichia coli by the multiplex PCR assay with Alexa Fluor-labeled primers. This assay can easily distinguish eight genes based on the size and color of amplified products without gel staining.
Journal of microbiological methods 07/2011; 86(1):119-20. · 2.43 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: We applied a multiplex reverse transcription-PCR with fluorescent dye-labeled primers (fluorescent multiplex RT-PCR) for noroviruses (NoV), sapovirus (SaV), and human astrovirus (HAstV) to diagnose 71 outbreaks of acute gastroenteritis during July 2007 and May 2010 in Hiroshima prefecture. In this assay, the green, red, yellow, and blue fluorescence for NoV genogroup I, NoV genogroup II, SaV, and HAstV, respectively, were indicated on an agarose gel under ultraviolet light. In 61 virus-positive outbreaks confirmed by fluorescent multiplex RT-PCR, detection rates of outbreaks for NoVs, SaV, and HAstV were 96.7%, 3.3%, and 0%, respectively.
Microbiology and Immunology 05/2011; 55(5):369-72. · 1.55 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: The charge-changing cross sections (σcc) of 28Si on a carbon target were measured with high precision at intermediate energies from 100 to 600 MeV/nucleon. The measured σcc decreases rapidly from low energies up to 200 MeV/nucleon, whereas at higher energies it appears almost constant. The energy dependence of σcc is compared with a Glauber-type model calculation where only the proton distribution of 28Si is taken into account. A phenomenological correction factor deduced from the present data satisfactorily reproduces the experimental σcc for other stable nuclei, whose charge distributions were determined by electron scattering and muon capture experiments.
Physical Review C 07/2010; 82(1). · 3.72 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Reverse transcription-loop-mediated isothermal amplification (RT-LAMP) assay we developed detects novel influenza A (H1N1) of swine origin and seasonal influenza A (H1N1 and H3N2) viruses. Individual primer sets targeting the HA gene for novel H1N1, H1N1, and H3N2 were newly designed to specifically detect these subtypes. No cross-reactions occurred among novel H1N1, H1N1, and H3N2, and 7 respiratory viruses-influenza B virus, influenza C virus, adenovirus, respiratory syncytial virus, metapneumovirus, parainfluenza virus, and rhinovirus-had no reaction to 3 RT-LAMP assays. RT-LAMP is assayed at 63 degrees C for 40 min. In our RT-LAMP assay, Eriochrome Black T was added to the reaction mixture as an amplification indicator to detect virus genomes without using real-time turbidimetry. Positive reactions were indicated in blue and negative reactions remained purple. Of 139 samples from suspected novel H1N1 subjects tested by both RT-LAMP and real-time RT-PCR assay, 110 were positive in both assays. Two samples with low copy numbers were positive only in real-time RT-PCR assay. Of 27 novel negative H1N1 samples, 4 were positive for H3N2 on viral isolation and conventional RT-PCR assay. RT-LAMP assay for detecting H3N2 obtained the same findings. Our RT-LAMP assay is thus potentially useful in rapidly detecting influenza A virus such as novel H1N1, H1N1, and H3N2.
Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases 07/2010; 84(4):431-6.
[Show abstract][Hide abstract] ABSTRACT: The transition of genotypes implicated in 102 NoV gastroenteritis outbreaks in Hiroshima Prefecture, Japan, during eight epidemic seasons was investigated. Eighteen genotypes were implicated in the outbreaks, with the chronological characteristics as in GII.3, GII.4, GII.5 and GII.12. In GII.4 variants, amino acid changes and positively selected sites were of note and significantly concentrated in the surface-exposed P2 subdomain of the VP1 protein. Notably, variant-specific epitopes at which positively selected sites are located may be significant for distinguishing a new GII.4 variant. The interaction of these genetic changes with developing immunity seems to influence NoV epidemics.
Archives of Virology 12/2009; 155(1):111-5. · 2.28 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Constrictive pericarditis (CP) after off-pump coronary bypass surgery, especially after minimally invasive direct coronary artery bypass (MIDCAB), had rarely been reported. We presened a surgically treated case of CP after MIDCAB via left anterior small thoracotomy. A 57-year-old man underwent MIDCAB with placement of an internal mammary artery to the left anterior descending coronary artery uneventfully. Four years after the operation, he began to experience exertional dyspnea. Computed tomography of the chest showed pericardial thickening. Cardiac catheterization revealed elevation and equalization of the pressures in the 4 chambers, as well as low cardiac output. Pericardiectomy using cardiopulmonary bypass through a median sternotomy was performed successfully without injury to the bypass graft. Postoperative hemodynamic measurements were improved. The patient has resumed normal activity and remained free from heart failure for over 5 years.
Kyobu geka. The Japanese journal of thoracic surgery 12/2009; 62(13):1175-7.
[Show abstract][Hide abstract] ABSTRACT: To assess the usefulness of a new rapid chromatographic immunoassay test for the detection of adenovirus, a prospective 3-year study was conducted in 587 febrile outpatient children suspected of adenovirus infection. A total of 332 children were diagnosed with this infection, using a viral culture. The sensitivity and specificity of the rapid test were 89.2% and 98.0%, respectively.