舞踊の教育・訓練システム

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Search for matter-dependent atmospheric neutrino oscillations in Super-Kamiokande

We consider ν_μ→ν_τ oscillations in the context of the mass varying neutrino (MaVaN) model, where the neutrino mass can vary depending on the electron density along the flight path of the neutrino. Our analysis assumes a mechanism with dependence only upon the electron density, hence ordinary matter density, of the medium through which the neutrino travels. Fully-contained, partially-contained and upward-going muon atmospheric neutrino data from the Super-Kamiokande detector, taken from the entire SK-I period of 1489 live days, are compared to MaVaN model predictions.We find that, for the case of 2-flavor oscillations, and for the specific models tested, oscillation independent of electron density is favored over density dependence. Assuming maximal mixing, the best-fit case and the densityindependent case do not differ significantly.journal articl

Study of Time-Dependent CP Violation in B0→J/ψπ0 Decays

journal articl

医学部 情報科学基礎 2コマコース (平成19年度)

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Transmission electron microscopy images illustrating the exosomes that were extracted from HCT116 p53 +/+ cells via ultracentrifugation.

Exosomes are indicated by arrowheads. Scale bars in each of the four panels represent 100 nm. (A) Exosomes extracted from UV-exposed cells, direct magnification: 120 000x. (B) Exosomes extracted from non-UV-exposed control cells, direct magnification: 100 000x. (C) Exosomes from UV-exposed cells, direct magnification: 140 000x. (D) Exosome from UV-exposed cells, direct magnification: 160 000x.</p

Raw Data File.

This file contains the data corresponding to the results presented in the current manuscript. (XLSX)</p

Reporter cells subjected to RNase-treated ICCM or exosomes derived from UV-exposed bystander cells.

(A) Clonogenic survival of HCT116 p53 +/+ reporter cells receiving RNase-treated UV-ICCM, UV-ICCM, or CCCM. Error bars represent SEM for a total of 18 replicates (3 replicates for each of 6 independent experiments) for the 0.5 Gy positive control and 0 Gy negative control, and 9 replicates (3 replicates for 3 independent experiments) for the RNase-treated 0.5 Gy group. (B) Clonogenic survival of HCT116 p53 +/+ reporter cells following treatment of the reporter cells with RNase-treated UV-exposed exosomes, UV-exposed exosome fractions (no RNase treatment), or non-exposed exosome fractions. Error bars represent SEM for a total of 18 replicates (3 replicates for each of 6 independent experiments) for the 0.5 Gy positive control and 0 Gy negative control, and 9 replicates (3 replicates for 3 independent experiments) for the RNase-treated 0.5 Gy group. (C) Mitochondrial membrane potential (assessed via the incubation of cells with JC-1 mitochondrial potential dye) of HCT116 p53 +/+ reporter cells receiving RNase-treated or non-RNase-treated exosome isolates extracted from ICCM or CCCM. Error bars represent standard error of the mean for 6 replicates tested for each of three independent experiments (18 replicates total). Letters (a,b,c) represent significant differences between treatments as assessed by 1-way analysis of variance; post-hoc testing assessed using Tukey’s HSD test at the 95% confidence level.</p

Temperature Dependence of Magnetically Active Charge Excitations in Magnetite across the Verwey Transition

We study the electronic structure of bulk single crystals and epitaxial films of Fe3O4. Fe 2p core level spectra show clear differences between hard x-ray (HAX) and soft x-ray photoemission spectroscopy (PES). The bulk-sensitive spectra exhibit temperature (T) dependence across the Verwey transition, which is missing in the surface-sensitive spectra. By using an extended impurity Anderson full-multiplet model-and in contrast to an earlier peak assignment-we show that the two distinct Fe species (A and B site) and the charge modulation at the B site are responsible for the newly found double peaks in the main peak above TV and its T-dependent evolution. The Fe 2p HAXPES spectra show a clear magnetic circular dichroism (MCD) in the metallic phase of magnetized 100-nm-thick films. The model calculations also reproduce the MCD and identify the contributions from magnetically distinct A and B sites. Valence band HAXPES shows a finite density of states at EF for the polaronic half metal with a remnant order above TV and a clear gap formation below TV. The results indicate that the Verwey transition is driven by changes in the strongly correlated and magnetically active B-site electronic states, consistent with resistivity and optical spectra.journal articl

Reporter cells subjected to exosomes or conditioned culture medium from UV-exposed bystander cells (UV emitted from beta-irradiated cells).

<p><b>(A)</b> Surviving fraction of HCT116 p53 +/+ cells cultured in UV-exposed ICCM or CCCM. Error bars represent SEM for 18 replicates (3 replicates for each of 6 independent experiments) for the UV-ICCM treatment and the CCCM control, and 9 replicates (3 replicates for 3 independent experiments) for the UV-exposed medium (no cell) control. <b>(B)</b> Surviving fraction of HCT116 p53 +/+ cells cultured in exosomes extracted from UV-exposed ICCM or CCCM. Error bars represent SEM for 18 replicates (3 replicates for each of 6 independent experiments) for the UV-ICCM exosome treatment and CCCM exosome control, and 9 replicates (3 replicates for 3 independent experiments) for the no cell control & medium only control. Letters (a,b,c) indicate significant differences between samples as assessed by means of 1-way ANOVA, 95% confidence level.</p

Protein bands acquired using western blots for expression of.

<p><b>(A)</b> CD63 (glycosylated form: 30–70 kDa, non-glycosylated form: 25 kDa), <b>(B)</b> TSG101 (49 kDa), and <b>(C)</b> Actin (42 kDa). Lane 1: positive control (10 <i>μ</i>g protein from HepG2 whole cell lysate for CD63 and actin antibodies; 10 <i>μ</i>g protein from HeLa whole cell lysate for TSG101 antibody). Lane 2: exosomes extracted from HCT116 p53 +/+ CCCM. Lane 3: HCT116 p53 +/+ whole cell lysate not exposed to UV. Lane 4: exosomes extracted from HCT116 p53 +/+ UV-ICCM. Lane 5: HCT116 p53 +/+ whole cell lysate exposed to UV. All lanes contain 10 <i>μ</i>g protein each. The lack of actin expression demonstrated by lanes 2 and 4 indicate the absence of actin in exosome samples. Because actin is not required for exosome transport, the absence of actin in exosome samples is expected and indicates a lack of contamination by cellular debris in the exosome isolates.</p