Katsuya Nagaoka

Learn More
Environmental factors such as nutritional state may act on the epigenome that consequently contributes to the metabolic adaptation of cells and the organisms. The lysine-specific demethylase-1 (LSD1) is a unique nuclear protein that utilizes flavin adenosine dinucleotide (FAD) as a cofactor. Here we show that LSD1 epigenetically regulates energy-expenditure(More)
We discuss how using multimedia Internet communication tools, including a high-quality video conferencing system, a text-based discussion system, and a network-based display-sharing system, promoted the establishment of an effective learning environment. We found that students studying a second language by using these systems became more motivated not only(More)
The driving and damping mechanism of plasma flow is an important issue because flow shear has a significant impact on turbulence in a plasma, which determines the transport in the magnetized plasma. Here we report clear evidence of the flow damping due to stochastization of the magnetic field. Abrupt damping of the toroidal flow associated with a transition(More)
In the Large Helical Device (LHD), a reversed magnetic shear (RS) configuration having non-monotonic rotational transform profile was formed by intense counter neutral beam (NB) current drive. In the RS configuration helical plasma, the reversed shear Alfvén eigenmode (RSAE) with n=1 toroidal mode number was identified together with energetic-ion-driven(More)
This paper discusses how the use of a high-quality video-conferencing system, a chat system, and a Web-based voting system promotes the establishment of an effective leaning environment, particularly for cross-cultural learning. A cross-cultural learning experiment was conducted in January, 2005. Classrooms in the IT education hall at Hokkaido University,(More)
The driving and damping mechanism of plasma flow is an important issue because flow shear has a significant impact on turbulence in a plasma, which determines the transport in the magnetized plasma. Here we report clear evidence of the flow damping due to stochastization of the magnetic field. Abrupt damping of the toroidal flow associated with a transition(More)
  • 1