| 1. |
- Fukuda, M., et al.
(author)
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Reaction cross section studies at NIRS and RIBF
- 2010
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In: American Institute of Physics Conference Series. - American Institute of Physics : AIP. ; , s. 270-273
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Conference paper (peer-reviewed)abstract
- Reaction cross sections for stable nuclei at intermediate energies have been measured precisely and systematically. The data have been found to be reproduced nicely by the optical‐limit approximation of Glauber theory modified to include the nucleon multiple scattering effect and the Fermi‐motion effect. Applying this prescription, the nucleon density distribution of 17Ne has been studied. The surface structure of 8B and 11Be has been also studied using this prescription and hydrogen targets. Using the RIBF that has just started application to studies of exotic nuclei, neutron‐rich Ne isotopes around the Island of Inversion have been investigated through measurements of their interaction cross sections.
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| 2. |
- Pirozhkov, A. S., et al.
(author)
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Diagnostic of laser contrast using target reflectivity
- 2009
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 94:24
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Journal article (peer-reviewed)abstract
- Using three different laser systems, we demonstrate a convenient and simple plasma based diagnostic of the contrast of high-power short-pulse lasers. The technique is based on measuring the specular reflectivity from a solid target. The reflectivity remains high even at relativistic intensities above 10(19) W/cm(2) in the case of a high-contrast prepulse-free laser. On the contrary, the specular reflectivity drops with increasing intensities in the case of systems with insufficient contrast due to beam breakup and increased absorption caused by preplasma.
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| 3. |
- Toshito, T., et al.
(author)
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Measurements of projectile-like Be-8 and B-9 production in 200-400 MeV/nucleon C-12 on water
- 2008
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In: Physical Review C - Nuclear Physics. - 2469-9985 .- 2469-9993. ; 78:6, s. 4-
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Journal article (peer-reviewed)abstract
- We have studied the production of the projectile-like fragments Be-8 and B-9 produced in interactions of 200 to 400 MeV/nucleon carbon ions with water, using emulsion detectors. In this Brief Report we present the first published production cross section of the projectile-like fragment B-9 in the energy region above 100 MeV/nucleon. The measured production cross sections of these nuclides were compared to calculations using a semiempirical model. We found that the measured cross sections deviate from the calculated values by a factor up to about six. This information is of importance for benchmarking and improving heavy ion nuclear reaction models.
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| 4. |
- Toshito, T., et al.
(author)
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Measurements of total and partial charge-changing cross sections for 200-to 400-MeV/nucleon C-12 on water and polycarbonate
- 2007
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In: Physical Review C - Nuclear Physics. - 2469-9985 .- 2469-9993. ; 75:5, s. 8-
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Journal article (peer-reviewed)abstract
- We have studied charged nuclear fragments produced by 200- to 400-MeV/nucleon carbon ions, interacting with water and polycarbonate, using a newly developed emulsion detector. Total and partial charge-changing cross sections for the production of B, Be, and Li fragments were measured and compared with both previously published measurements and model predictions. This study is of importance for validating and improving carbon-ion therapy treatment planning systems and for estimating the radiological risks for personnel on space missions, because carbon is a significant component of galactic cosmic rays.
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| 5. |
- Yamada, K., et al.
(author)
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Targeted Therapy for Low Back Pain in Elderly Degenerative Lumbar Scoliosis
- 2016
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In: Spine. - : Ovid Technologies (Wolters Kluwer Health). - 0362-2436. ; 41:10, s. 872-879
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Journal article (peer-reviewed)abstract
- Study Design. Prospective cohort study. Objective. To compare the novel treatment procedure with nonoperative treatment for low back pain (LBP) in elderly patients with degenerative lumbar scoliosis (DLS). Summary of Background Data. Treatment of LBP associated with elderly DLS is controversial. We developed a novel treatment procedure, termed percutaneous intervertebral-vacuum polymethylmethacrylate injection (PIPI). Methods. We included patients with de novo DLS aged >= 65 years who had LBP with a visual analogue scale (VAS) score of >50 for >= 6 months with intervertebral vacuum and vertebral bone marrow edema (BME) defined on fat-saturated T2-weighted or gadolinium-enhanced T1-weighted magnetic resonance imaging. The primary outcomes were evaluated using the VAS score and modified Oswestry Disability Index (ODI). As an objective measurement, we scored BME on magnetic resonance imaging. Results. Between August 2004 and July 2011, 109 patients underwent PIPI and 53 received nonoperative treatment. At 1 month, mean improvements in VAS scores were -55.3 (95% CI, -60.5 to -50.1) and -1.9 (CI, -7.7 to 3.8) and mean improvements in ODI were -22.7 (CI, -27.3 to -18.2) and -0.6 (CI, -6.6 to 5.4) for the PIPI and nonoperative groups, respectively. At 2 years, mean improvements in VAS scores were -52.2 (CI, -59.9 to -44.4) and -4.0 (CI, -10.9 to 3.0) and mean improvements in ODI were -20.7 (CI, -27.3 to -14.5) and -1.0 (CI, -7.7 to 5.7) for the PIPI and nonoperative groups, respectively. BME substantially decreased in the PIPI group compared with the nonoperative group (P < 0.001) and correlated with VAS score and ODI improvements (VAS score: r = 0.502, P < 0.001; ODI: r = 0.372, P< 0.001). Conclusion. PIPI improved treatment for LBP, with a sustained clinical benefit for at least 2 years.
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| 6. |
- Fan, G. W., et al.
(author)
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Density distribution of 8Li and 8B$ and capture reaction at low energy
- 2015
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In: Phys. Rev. C. ; 91
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Journal article (peer-reviewed)abstract
- Reaction cross sections of 8Li on stable targets were measured at intermediate energies. With the existing experimental data of interaction cross sections at 790 MeV/nucleon the nucleon density distribution of 8Liwas extracted by the use of the modified Glauber model. Meanwhile, the existing data of 8B have been also reanalyzed. Structures of 8Li and 8B were compared through the density. On the basis of dilute surface densities, the discussion of 7Li(n,γ)8Li and 7Be(p,γ)8B capture reactions was performed within the framework of the direct capture reaction mechanism. The calculations agreed quite well with the experimental data as well as other analyses.
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| 7. |
- Fan, G. W., et al.
(author)
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Structure of 8Li from a reaction cross-section measurement
- 2014
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In: Phys. Rev. C. - American Physical Society. ; 90, s. 044321-
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Journal article (peer-reviewed)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.
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| 8. |
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| 9. |
- Yamaguchi, T., et al.
(author)
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Energy-dependent charge-changing cross sections and proton distribution of 28Si
- 2010
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In: Phys. Rev. C. ; 82, s. 014609-1-014609-6
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Journal article (peer-reviewed)abstract
- The charge-changing cross sections (σcc) of 28Si on a carbon target were measured with high precision atintermediate energies from 100 to 600 MeV/nucleon. The measured σcc decreases rapidly from low energies upto 200 MeV/nucleon, whereas at higher energies it appears almost constant. The energy dependence of σcc iscompared 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 experimentalσcc for other stable nuclei, whose charge distributions were determined by electron scattering and muon captureexperiments.
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| 10. |
- Bowman, John L, et al.
(author)
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Insights into Land Plant Evolution Garnered from the Marchantia polymorpha Genome
- 2017
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In: Cell. - : Elsevier BV. - 0092-8674 .- 1097-4172. ; 171:2, s. 287-304.15
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Journal article (peer-reviewed)abstract
- The evolution of land flora transformed the terrestrial environment. Land plants evolved from an ancestral charophycean alga from which they inherited developmental, biochemical, and cell biological attributes. Additional biochemical and physiological adaptations to land, and a life cycle with an alternation between multicellular haploid and diploid generations that facilitated efficient dispersal of desiccation tolerant spores, evolved in the ancestral land plant. We analyzed the genome of the liverwort Marchantia polymorpha, a member of a basal land plant lineage. Relative to charophycean algae, land plant genomes are characterized by genes encoding novel biochemical pathways, new phytohormone signaling pathways (notably auxin), expanded repertoires of signaling pathways, and increased diversity in some transcription factor families. Compared with other sequenced land plants, M. polymorpha exhibits low genetic redundancy in most regulatory pathways, with this portion of its genome resembling that predicted for the ancestral land plant. PAPERCLIP.
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