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991.
992.
Gerard van der Geer Toshiyuki Katsura 《Rendiconti del Circolo Matematico di Palermo》1938,62(1):111-125
We discuss relations between certain invariants of varieties in positive characteristic, like the \(a\)-number and the height of the Artin-Mazur formal group. We calculate the \(a\)-number for Fermat surfaces. 相似文献
993.
994.
Matsumoto Yutaka Takeo Yoko Egawa Satoru Yamaguchi Gota Yokomae Shunya Takei Masashi Yumoto Hirokatsu Koyama Takahisa Ohashi Haruhiko Tono Kensuke Yabashi Makina Mimura Hidekazu Kimura Takashi 《Optical Review》2022,29(1):7-12
Optical Review - A microfluidic device was developed for coherent diffraction imaging using an X-ray free-electron laser (XFEL-CDI). Liquid samples, which are separately packed in reservoirs of the... 相似文献
995.
996.
Sampreeth Thayyil Yukinori Nishigami Md. Jahirul Islam P. K. Hashim Ken'ya Furuta Kazuhiro Oiwa Jian Yu Min Yao Toshiyuki Nakagaki Nobuyuki Tamaoki 《Chemistry (Weinheim an der Bergstrasse, Germany)》2022,28(30):e202200807
Adenosine triphosphate (ATP) is the energy source for various biochemical processes and biomolecular motors in living things. Development of ATP antagonists and their stimuli-controlled actions offer a novel approach to regulate biological processes. Herein, we developed azobenzene-based photoswitchable ATP antagonists for controlling the activity of motor proteins; cytoplasmic and axonemal dyneins. The new ATP antagonists showed reversible photoswitching of cytoplasmic dynein activity in an in vitro dynein-microtubule system due to the trans and cis photoisomerization of their azobenzene segment. Importantly, our ATP antagonists reversibly regulated the axonemal dynein motor activity for the force generation in a demembranated model of Chlamydomonas reinhardtii. We found that the trans and cis isomers of ATP antagonists significantly differ in their affinity to the ATP binding site. 相似文献
997.
998.
999.
Makoto Yamaguchi Takeshi Terao Akihiro Ohira Naoki Hasegawa Kazuhiko Shinohara 《Journal of Polymer Science.Polymer Physics》2019,57(13):813-818
Perfluorosulfonic acid ionomers have been widely used as proton‐conducting materials in polymer‐electrolyte membrane fuel cells and their dispersions in polar solvents are used to prepare proton‐conducting membranes as well as catalyst layers. While it has been known that the dispersed particles become monodisperse after heating to 230 °C or above, their size and shape have not been fully characterized yet. Cryogenic transmission electron microscopy images and small‐angle X‐ray scattering profiles of the dilute aqueous dispersions before and after heating to 240 °C have clearly shown that rod‐like particles became significantly shorter cylinders without changing their radii. Particle length distributions were lognormal and average molar mass and dispersity after heating to 240 °C were consistent with the values from size exclusion chromatography. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019 , 57, 813–818 相似文献
1000.
Tomoko Yajima Ishrat Jahan Takayuki Tonoi Manami Shinmen Aya Nishikawa Kanako Yamaguchi Izumi Sekine Hajime Nagano 《Tetrahedron》2012,68(34):6856-6861
Photoinduced radical perfluoroalkylation of various simple electron-deficient olefins was achieved in the presence of an aqueous Na2S2O3 solution. The reactions proceeded smoothly to give addition or addition–elimination products. The ability of the products to be used as radical precursors or Michael acceptors was also demonstrated. 相似文献