11 Works

γ-radiation effects on metal oxide particles and their wetted surfaces

John McGrady, Shinichi Yamashita, Atsushi Kimura, Sho Kano, Huilong Yang, Zhengang Duan, Takumi Saito & Hiroaki Abe
Typical metal oxide corrosion products of structural materials have been irradiated with γ-rays in ultra-pure water to investigate the effect of radiation on the surface oxide and the nature of adsorbed water. Analysis techniques including thermal gravimetric analysis, differential thermal analysis, diffuse reflectance infrared Fourier transform spectroscopy, and X-ray photoelectron spectroscopy before and after γ-irradiation were employed to investigate surface structural effects and adsorbed water behaviour. The production of H2 in the oxide nanoparticle mixtures...

Venus Climate Orbiter Akatsuki UVI Longitude-Latitude Map Data

Shin-ya Murakami, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura, Manabu Yamada, Toru Kouyama, Takeshi Horinouchi & Takeshi Imamura
This dataset contains longitude-latitude map data created from images acquired by the UVI instrument of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft. This dataset consists of NetCDF and FITS files. The longitude-latitude map data are included as Level 3 product in NetCDF. During process of creating longitude-latitude map data, pointing of spacecraft was corrected using limb-fitting technique. Detected limb points and information on fitted ellipse are provided as auxiliary data,...

γ-radiation effects on metal oxide particles and their wetted surfaces

John McGrady, Shinichi Yamashita, Atsushi Kimura, Sho Kano, Huilong Yang, Zhengang Duan, Takumi Saito & Hiroaki Abe
Typical metal oxide corrosion products of structural materials have been irradiated with γ-rays in ultra-pure water to investigate the effect of radiation on the surface oxide and the nature of adsorbed water. Analysis techniques including thermal gravimetric analysis, differential thermal analysis, diffuse reflectance infrared Fourier transform spectroscopy, and X-ray photoelectron spectroscopy before and after γ-irradiation were employed to investigate surface structural effects and adsorbed water behaviour. The production of H2 in the oxide nanoparticle mixtures...

Data from: Predation risk and resource abundance mediate foraging behaviour and intraspecific resource partitioning among consumers in dominance hierarchies

Sean M. Naman, Rui Ueda & Takuya Sato
Dominance hierarchies and the resulting unequal resource partitioning among individuals are key mechanisms of population regulation. The strength of dominance hierarchies can be influenced by size-dependent trade-offs between foraging and predator avoidance whereby competitively inferior subdominants can access a larger proportion of limiting resources by accepting higher predation risk. Foraging-predation risk trade-offs also depend on resource abundance. Yet, few studies have manipulated predation risk and resource abundance simultaneously; consequently, their joint effect on resource partitioning...

Data from: Latitudinal variation and coevolutionary diversification of sexually dimorphic traits in the false blister beetle Oedemera sexualis

Daisuke Satomi, Chiharu Koshio, Haruki Tatsuta, Shin-Ichi Kudo & Yasuoki Takami
Sexual traits are subject to evolutionary forces that maximize reproductive benefits and minimize survival costs, both of which can depend on environmental conditions. Latitude explains substantial variation in environmental conditions. However, little is known about the relationship between sexual trait variation and latitude, although body size often correlates with latitude. We examined latitudinal variation in male and female sexual traits in 22 populations of the false blister beetle Oedemera sexualis in the Japanese Archipelago. Males...

Data from: Prior selfing can mitigate the negative effects of mutual reproductive interference between coexisting congeners

Koki R. Katsuhara & Atushi Ushimaru
When more than one closely related plant species share the same pollination niche, reproductive interference (RI) via interspecific pollen transfer should limit their coexistence. However, some studies have reported the sympatric coexistence of two native close-relatives pollinated by the same pollinators under RI without niche partitioning. To clarify the mechanisms promoting the coexistence of species sharing pollinators, we examined the frequency dependency of RI in natural conditions and the potential roles of autonomous selfing in...

Data from: Non-random loss of phylogenetically distinct rare species degrades phylogenetic diversity in semi-natural grasslands

Kei Uchida, Masayoshi K. Hiraiwa & Marc W. Cadotte
1. Although biodiversity loss is a critically important topic, our understanding of how both land abandonment and land-use intensification in semi-natural grasslands alters the community diversity and assembly mechanisms is very limited. Large-scale economic drivers of land-use change might inadvertently result in the loss of vulnerable species and reduce ecosystem services provisioning. 2. In this study, we assessed non-random community change by examining patterns of low-abundance species loss, and community assembly in semi-natural grasslands due...

Venus Climate Orbiter Akatsuki LIR Longitude-Latitude Map Data

Shin-ya Murakami, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura, Manabu Yamada, Toru Kouyama, Takeshi Horinouchi & Takeshi Imamura
This dataset contains longitude-latitude map data created from images acquired by the LIR instrument of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft. This dataset consists of NetCDF and FITS files. The longitude-latitude map data are included as Level 3 product in NetCDF. During process of creating longitude-latitude map data, pointing of spacecraft was corrected using limb-fitting technique. Detected limb points and information on fitted ellipse are provided as auxiliary data,...

Venus Climate Orbiter Akatsuki IR2 Longitude-Latitude Map Data

Shin-ya Murakami, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura, Manabu Yamada, Toru Kouyama, Takeshi Horinouchi & Takeshi Imamura
This dataset contains longitude-latitude map data created from images acquired by the IR2 instrument of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft. This dataset consists of NetCDF and FITS files. The longitude-latitude map data are included as Level 3 product in NetCDF. During process of creating longitude-latitude map data, pointing of spacecraft was corrected using limb-fitting technique. Detected limb points and information on fitted ellipse are provided as auxiliary data,...

Venus Climate Orbiter Akatsuki IR1 Longitude-Latitude Map Data

Shin-ya Murakami, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura, Manabu Yamada, Toru Kouyama, Takeshi Horinouchi & Takeshi Imamura
This dataset contains longitude-latitude map data created from images acquired by the IR1 instrument of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft. This dataset consists of NetCDF and FITS files. The longitude-latitude map data are included as Level 3 product in NetCDF. During process of creating longitude-latitude map data, pointing of spacecraft was corrected using limb-fitting technique. Detected limb points and information on fitted ellipse are provided as auxiliary data,...

Venus Climate Orbiter Akatsuki Dataset Collection

Shin-ya Murakami, Yukio Yamamoto, Kevin McGouldrick, George L. Hashimoto, Manabu Yamada, Atsushi Yamazaki, Takao M. Sato, Naru Hirata, Shoko Ohtsuki, Shingo Kameda, Takehiko Satoh, Toru Kouyama, Tetsuya Fukuhara, Makoto Taguchi, Hiroki Ando, Takeshi Imamura, Kazunori Ogohara, Masahiro Takagi, Hiroki Kashimura & Takeshi Horinouchi
This collection consists of datasets of the Venus Climate Orbiter (VCO, also known as PLANET-C and AKATSUKI) spacecraft.

Registration Year

  • 2019
    11

Resource Types

  • Dataset
    8
  • Text
    2
  • Collection
    1

Affiliations

  • Kobe University
    11
  • Chiba Institute of Technology
    5
  • National Institute of Advanced Industrial Science and Technology
    5
  • Hokkaido University
    5
  • The University of Tokyo
    5
  • Japan Aerospace Exploration Agency
    5
  • Kyoto Sangyo University
    5
  • Japan Society for the Promotion of Science
    2
  • Tohoku University
    2
  • Tokyo Dental College
    2