355 research outputs found

    Aharonov-Bohm Exciton Absorption Splitting in Chiral Specific Single-Walled Carbon Nanotubes in Magnetic Fields of up to 78 T

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    The Ajiki-Ando (A-A) splitting of single-walled carbon nanotubes(SWNT) originating from the Aharanov-Bohm effect was observed in chiral specific SWNTs by the magneto-absorption measurements conducted at magnetic fields of up to 78 T. The absorption spectra from each chirality showed clear A-A splitting of the E11E_{11} optical excitonic transitions. The parameters of both the dark-bright exciton energy splitting and the rate of A-A splitting in a magnetic field were determined for the first time from the well-resolved absorption spectra.Comment: 5 pages, 3 figure

    The Difference between Direct-Experience and Indirect-Experience (by electronic media) : Focused on Feeling a Fluctuation

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    In this paper, difference between direct-experience and indirect-experience (by electronic media) is discussed from a point of feeling a fluctuation. In the real world, there are various fluctuations like a wind. And also children\u27s body has some fluctuations. Therefore children\u27s body can be synchronized with a fluctuation in the world. As a result, a pleasantness is produced children. And chidren\u27s body is formed of a rythm of fluctuation. On the other hand, in the electronic world there isn\u27t a fluctuation. So children\u27s body has a opportunity to synchronize a fluctuation in the world. Naturally pleasantness isn\u27t produced children. So through the electronic experiences affirmative feeling of the world won\u27t be formed children. Moreover a fluctuation won\u27t be settled children\u27s body. Now appeared the difference between two experiences, we will have a hypothesis in development of children in the information age. If indirect-experience will be more than direct-experience at ratio, particularly in the early age, for children it will be difficult to have a affirmative feeling of the world and body as a system to feel a fluctuation

    IMAI Yasuo "Medial Perspectiveon Education : Toward a Transformation of the Concept of Education"

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    CT findings of type A acute aortic dissection that did and did not result in prehospital death

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    The differences between the pathologies of cases of type A acute aortic dissection (AAD) that did and did not result in prehospital death (PHD) have not been fully elucidated. This study aimed to compare the CT findings and clarify the differences between the pathologies of such cases. Ninety four consecutive type A AAD patients between 2010 and 2020 were enrolled in this study. There were 47 males and 47 females (mean age: 69.0 Β± 14.4 years). The patients were divided into those that did (n = 25, 27%) and did not (n = 69, 73%) suffer PHD. We retrospectively evaluated the CT or postmortem CT findings of each case and analyzed the relationships between clinical factors (CT findings and clinical characteristics) and PHD using logistic regression analysis.Bloody pericardial effusion (96% vs 35%, P < .0001), bloody pleural effusion (40% vs 1%, P < .0001), and mediastinal hematomas (88% vs 14%, P < .0001) were significantly more common in the PHD group than in the no PHD group. In the multivariate logistic regression analysis, bloody pericardial effusion and lung consolidation were found to be significant risk factors for PHD (odds ratio: 21.29 [95% confidence intervals {CI}: 1.19–248.29] and 13.72 [95% CI: 1.79–105.06], respectively; P = .014 and P = .012, respectively). AD affecting the abdominal aorta was identified as a significant negative risk factor for PHD (odds ratio: 0.02 [95% CI: 0.01–0.65]; P = .0042). Most PHD due to type A AAD are associated with hemorrhaging. Bleeding into the pericardium and type A AAD confined to the thoracic aorta are significant risk factors for PHD. Secondary respiratory failure might contribute to PHD in such cases
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