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    Chapter

    Solar Activity in the Past and Its Impacts on Climate

    Solar activity is suggested to impact the climate system through the influence of total solar irradiance (TSI), solar ultraviolet (UV), and galactic cosmic rays (GCRs). This chapter reviews the variability of ...

    Hiroko Miyahara, Ayumi Asai, Satoru Ueno in Solar-Terrestrial Environmental Prediction (2023)

  2. Article

    Open Access

    PSTEP: project for solar–terrestrial environment prediction

    Although solar activity may significantly impact the global environment and socioeconomic systems, the mechanisms for solar eruptions and the subsequent processes have not yet been fully understood. Thus, mode...

    Kanya Kusano, Kiyoshi Ichimoto, Mamoru Ishii, Yoshizumi Miyoshi in Earth, Planets and Space (2021)

  3. Article

    Open Access

    Relationship between three-dimensional velocity of filament eruptions and CME association

    It is widely recognised that filament disappearances or eruptions are frequently associated with Coronal Mass Ejections (CMEs). Since CMEs are a major source of disturbances of the space environment surroundin...

    Daikichi Seki, Kenichi Otsuji, Takako T. Ishii, Ayumi Asai in Earth, Planets and Space (2021)

  4. Article

    Open Access

    Role of high-dose salvage radiotherapy for oligometastases of the localised abdominal/pelvic lymph nodes: a retrospective study

    Abdominal/pelvic lymph node (LN) oligometastasis, a pattern of treatment failure, is observed occasionally, and radiotherapy may work as salvage therapy. The optimal prescription dose, however, is yet to be de...

    Makoto Ito, Takeshi Kodaira, Yutaro Koide, Takahito Okuda in BMC Cancer (2020)

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    Article

    Evaluation of capillary blood volume in the lower limb muscles after exercise by intravoxel incoherent motion

    The purpose of this study was to evaluate the change in capillary blood volume in the muscles of the lower limbs, before and after exercise, using intravoxel incoherent motion (IVIM).

    Akio Ogura, Hana Sotome, Ayumi Asai, Atsuya Fuju in La radiologia medica (2020)

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    Article

    Flare ribbon expansion and energy release

    We report a detailed examination about the relationship between the evolution of the Hα flare ribbons and the released magnetic energy during the April 10 2001 flare. In the Hα images, several bright kernels a...

    Ayumi Asai, Takaaki Yokoyama, Masumi Shimojo in Journal of Astrophysics and Astronomy (2006)