Ryohei Otsuka

984 total citations
54 papers, 801 citations indexed

About

Ryohei Otsuka is a scholar working on Biomaterials, Biomedical Engineering and Materials Chemistry. According to data from OpenAlex, Ryohei Otsuka has authored 54 papers receiving a total of 801 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Biomaterials, 12 papers in Biomedical Engineering and 10 papers in Materials Chemistry. Recurrent topics in Ryohei Otsuka's work include Clay minerals and soil interactions (23 papers), Crystal Structures and Properties (8 papers) and Zeolite Catalysis and Synthesis (6 papers). Ryohei Otsuka is often cited by papers focused on Clay minerals and soil interactions (23 papers), Crystal Structures and Properties (8 papers) and Zeolite Catalysis and Synthesis (6 papers). Ryohei Otsuka collaborates with scholars based in Japan, Australia and United States. Ryohei Otsuka's co-authors include Tsutomu Satō, Takashi Watanabe, Atsushi Yamazaki, Naoya Imai, Atsumu Tsunashima, Masaru Akao, Hideki Aoki, Hisato Hayashi, Katsunori Kosuge and Naoki Miura and has published in prestigious journals such as SHILAP Revista de lepidopterología, Carbon and Optics Letters.

In The Last Decade

Ryohei Otsuka

51 papers receiving 749 citations

Peers

Ryohei Otsuka

BIOMA

CSE

M. Kawano Japan

B. A. Cressey United Kingdom

E. Mendelovici Venezuela

Rodney Tettenhorst United States

Silmarilly Bahfenne Australia

H. D. Ruan Australia

S. A. Greenberg United States

Sebastian T. Mergelsberg United States

Celia Marcos Spain

Michael Holmboe Sweden

M. Kawano Japan

Ryohei Otsuka

334 ×1.0

BIOMA

237 ×1.2

132 ×0.7

CSE

162 ×1.1

62 ×0.6

Citations per year, relative to Ryohei Otsuka Ryohei Otsuka (= 1×) peers M. Kawano

Countries citing papers authored by Ryohei Otsuka

Since Specialization

Citations

This map shows the geographic impact of Ryohei Otsuka's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryohei Otsuka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryohei Otsuka more than expected).

Fields of papers citing papers by Ryohei Otsuka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryohei Otsuka. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryohei Otsuka. The network helps show where Ryohei Otsuka may publish in the future.

Co-authorship network of co-authors of Ryohei Otsuka

This figure shows the co-authorship network connecting the top 25 collaborators of Ryohei Otsuka. A scholar is included among the top collaborators of Ryohei Otsuka based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryohei Otsuka. Ryohei Otsuka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Yamazaki, Atsushi, et al.. (1993). Preparation of lead oxide-montmorillonite complex.. Clay science. 9(1). 1–8. 1 indexed citations

Kosuge, Katsunori, et al.. (1993). Preparation and Characterization of Porous Silica Materials Obtained from Serpentinite by Acid Treatment.. NIPPON KAGAKU KAISHI. 335–341. 1 indexed citations

Kosuge, Katsunori, Atsumu Tsunashima, & Ryohei Otsuka. (1993). Adsorption Characteristics of Gas Molecules on Magadiite, Kenyaite and Their Layered Polysilicic Acids.. NIPPON KAGAKU KAISHI. 243–250.

Yamazaki, Atsushi, et al.. (1993). Use of hydroxyapatite small crystals as drug carrier.. Drug Delivery System. 8(6). 467–471. 1 indexed citations

Kosuge, Katsunori, Koji Shimada, Atsumu Tsunashima, & Ryohei Otsuka. (1992). Preparation and Utilization of Amorphous Silica from Serpentinite.. Shigen-to-Sozai. 108(6). 443–447. 4 indexed citations

Otsuka, Ryohei, et al.. (1991). Kinetics of Acid-Dissolution of Fe-sepiolite. Journal of the Clay Science Society of Japan. 31(2). 106–113. 1 indexed citations

Ando, Toru, et al.. (1988). Sepiolite from Leping, Jiangxi, China. Journal of the Clay Science Society of Japan. 28(3). 134–142. 1 indexed citations

Shiraishi, Minoru, et al.. (1987). Graphitization of coals and catalytic effect of indigeneous mineral matters.. Journal of the Fuel Society of Japan. 66(1). 55–64. 1 indexed citations

Otsuka, Ryohei. (1984). Recent Problems on Sepiolite. Journal of the Clay Science Society of Japan. 24(4). 137–145. 2 indexed citations

10.

Higuchi, Shinji, et al.. (1981). Hydrothermal Synthesis and Some Properties of the Talc-Willemseite Solid Solutions. Journal of the Clay Science Society of Japan. 21(2). 61–71. 1 indexed citations

11.

Otsuka, Ryohei, et al.. (1981). Hydrothermal treatment of wollastonite:Experimental studies on the genesis of stevensite and "hydrated talc" (4th report). Japanese Magazine of Mineralogical and Petrological Sciences. 15. 55–65. 2 indexed citations

12.

Higuchi, Shinji, et al.. (1981). Hydrothermal Synthesis and Some Properties of the Chrysotile-Pecoraite Solid Solutions. Journal of the Clay Science Society of Japan. 21(4). 130–140. 1 indexed citations

13.

Suzuki, Shigeru, et al.. (1979). Study of Montmorillonite with Scanning Electron Microscope. Journal of the Clay Science Society of Japan. 19(2). 55–60. 1 indexed citations

14.

Otsuka, Ryohei, et al.. (1979). Hydrothermal treatment of pectolite. Journal of the Mineralogical Society of Japan. 14(Special1). 170–186. 1 indexed citations

15.

Otsuka, Ryohei, et al.. (1974). Phase Transformations of Sepiolite under Hydrothermal Conditions. Journal of the Clay Science Society of Japan. 14(1). 8–19. 3 indexed citations

16.

Imai, Naoya, et al.. (1973). “HYDRATED TALC”-AN ALTERATION PRODUCT OF WOLLASTONITE BY REACTION WITH MAGNESIUM-BEARING HYDROTHERMAL SOLUTION. Clay science. 4(4). 175–191. 5 indexed citations

17.

Imai, Naoya, et al.. (1970). STEVENSITE FROM THE AKATANI MINE, NIIGATA PREFECTURE, NORTHEASTERN JAPAN. Clay science. 4(1). 11–29. 11 indexed citations

18.

Hayashi, Hisato, Ryohei Otsuka, & Naoya Imai. (1969). Infrared study of sepiolite and paly-gorskite on heating. American Mineralogist. 54. 1613–1624. 73 indexed citations

19.

Otsuka, Ryohei, et al.. (1966). On the Dehydration of Sepiolite from the Akatani Mine, Niigata Prefecture. The Journal of the Society of Chemical Industry Japan. 69(9). 1677–1680. 5 indexed citations

20.

Imai, Naoya, Ryohei Otsuka, & Kôji Watanabe. (1965). A Well-crystallized Kaolinite from the Akatani Mine, Niigata Prefecture. Journal of the Clay Science Society of Japan. 4. 113–126. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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