Koichi Numata

683 total citations
20 papers, 593 citations indexed

About

Koichi Numata is a scholar working on Condensed Matter Physics, Electronic, Optical and Magnetic Materials and Materials Chemistry. According to data from OpenAlex, Koichi Numata has authored 20 papers receiving a total of 593 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Condensed Matter Physics, 8 papers in Electronic, Optical and Magnetic Materials and 8 papers in Materials Chemistry. Recurrent topics in Koichi Numata's work include Physics of Superconductivity and Magnetism (8 papers), Enzyme Structure and Function (7 papers) and Protein Structure and Dynamics (6 papers). Koichi Numata is often cited by papers focused on Physics of Superconductivity and Magnetism (8 papers), Enzyme Structure and Function (7 papers) and Protein Structure and Dynamics (6 papers). Koichi Numata collaborates with scholars based in Japan, Switzerland and Germany. Koichi Numata's co-authors include Yanko Todorov, Shōji Yamanaka, Tairo Oshima, H. Sekine, Hiroshi Maeda, Akihiko Yamagishi, Katsuya Inoue, Masahiro Sakurai, M. Suzuki and Jia He and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Electrochimica Acta.

In The Last Decade

Koichi Numata

20 papers receiving 574 citations

Peers

Countries citing papers authored by Koichi Numata

Since Specialization

Citations

This map shows the geographic impact of Koichi Numata'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 Koichi Numata with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichi Numata more than expected).

Fields of papers citing papers by Koichi Numata

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koichi Numata. 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 Koichi Numata. The network helps show where Koichi Numata may publish in the future.

Co-authorship network of co-authors of Koichi Numata

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Numata. A scholar is included among the top collaborators of Koichi Numata 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 Koichi Numata. Koichi Numata 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

#	Work	Indexed citations
1	Effects of the Li:(Mn + Co + Ni) molar ratio on the electrochemical properties of LiMn1/3Co1/3Ni1/3O2 cathode material 2004 ·Electrochimica Acta ·Yanko Todorov, Koichi Numata	86
2	Thermostabilization of a chimeric enzyme by residue substitutions: four amino acid residues in loop regions are responsible for the thermostability of Thermus thermophilus isopropylmalate dehydrogenase 2001 ·Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology ·Koichi Numata, (unknown), Jitsutaro Kawaguchi, Masahiro Sakurai, Hideaki Moriyama, Nobuo Tanaka, Tairo Oshima	17
3	Improved anti-wear performance of nanostructured titanium boron nitride coatings 2001 ·Wear ·Jia He, Shoji Miyake, Yuichi Setsuhara, Ippei Shimizu, M. Suzuki, Koichi Numata, Hidenori Saito	39
4	Studies on interdomain interaction of 3-isopropylmalate dehydrogenase from an extreme thermophile, Thermus thermophilus , by constructing chimeric enzymes 1999 ·Extremophiles ·Koichi Numata, (unknown), Katsuhide Yutani, Tairo Oshima	4
5	Preparation and electrochemical properties of layered lithium–cobalt–manganese oxides 1999 ·Solid State Ionics ·Koichi Numata	42
6	Synthesis and characterization of layer structured solid solutions in the system of LiCoO2–Li2MnO3 1999 ·Solid State Ionics ·Koichi Numata	133
7	Synthesis of Solid Solutions in a System of LiCoO2-Li2MnO3 for Cathode Materials of Secondary Lithium Batteries 1997 ·Chemistry Letters ·Koichi Numata, (unknown), Shōji Yamanaka	94
8	A stable intermediate in the thermal unfolding process of a chimeric 3‐isopropylmalate dehydrogenase between a thermophilic and a mesophilic enzymes 1996 ·Protein Science ·(unknown), Koichi Numata, Akihiko Yamagishi, Katsuhide Yutani, Masahiro Sakurai, Nobuo Tanaka, Tairo Oshima	19
9	The crystal structure of thermostable mutants of chimeric 3–isopropylmalate dehydrogenase, 2T2M6T 1995 ·Protein Engineering Design and Selection ·Masahiro Sakurai, Hideaki Moriyama, Ko Onodera, Shojiro Kadono, Koichi Numata, (unknown), Jitsutaro Kawaguchi, (unknown), (unknown), Nobuo Tanaka	8
10	Thermal stability of chimeric isopropylmalate dehydrogenase genes constructed from a thermophile and a mesophile 1995 ·Protein Engineering Design and Selection ·Koichi Numata, (unknown), Nobuko Akutsu, Yoshiaki Nosoh, Akihiko Yamagishi, Tairo Oshima	37
11	Characterization of Ag/Bi2Sr2Can−1CunO2n+4 interfacial resistivity 1995 ·Physica C Superconductivity ·Yue‐Wen Fang, S. Danyluk, Michael T. Lanagan, (unknown), (unknown), Koichi Numata	17
12	Three-dimensional structures of chimeric enzymes between Bacillus subtilis and Thermus thermophilus 3-isopropylmalate dehydrogenases 1994 ·Protein Engineering Design and Selection ·Ko Onodera, Masahiro Sakurai, Hideaki Moriyama, Nobuo Tanaka, Koichi Numata, (unknown), (unknown), (unknown)	12
13	Crystallization and Preliminary X-Ray Studies of a Bacillus subtilis and Thermus thermophilus HB8 Chimeric 3-Isopropylmalate Dehydrogenase and Thermostable Mutants of It 1992 ·The Journal of Biochemistry ·Masahiro Sakurai, Ko Onodera, Hideaki Moriyama, (unknown), Nobuo Tanaka, Koichi Numata, Katsumi Imada, Mamoru Sato, Yukiteru Katsube, Tairo Oshima	3
14	The improvement in magnetic shielding by use of a double-cylinder configuration of high-T_coxide superconductors 1992 ·Journal of Physics D Applied Physics ·M. Itoh, Takashi Ohyama, Takumi Minemoto, Koichi Numata, Kazutomo Hoshino	24
15	Comparison of Bi-system 2223 and 2212 thick superconducting tapes: Grain alignment, current density, and strain effects 1991 ·Journal of Applied Physics ·H. Sekine, J. Schwartz, Takami Kuroda, Katsuya Inoue, Hiroshi Maeda, Koichi Numata, H. Yamamoto	20
16	Magnetization and critical current density of the Bi-(Pb)-Sr-Ca-Cu-O tapes in magnetic fields 1989 ·Applied Physics Letters ·H. Sekine, K. Itoh, Katsuya Inoue, Hiroshi Maeda, Koichi Numata	3
17	Metallurgical Studies and Optimization of Critical Crrent Density in Bi–(Pb)–Sr–Ca–Cu–O Superconductors 1989 ·Japanese Journal of Applied Physics ·H. Sekine, Keiichi Ogawa, Kiyoshi Inoue, Hiroshi Maeda, Koichi Numata	7
18	Fabrication of Bi-(Pb)-Sr-Ca-Cu-O mono- and multifilamentary superconductors and improvement in critical current density 1989 ·Journal of Applied Physics ·H. Sekine, Katsuya Inoue, Hiroshi Maeda, Koichi Numata	11
19	Metallurgical studies and optimization of sintering for the Bi-Sr-Ca-Cu-O superconductors 1988 ·Journal of Applied Physics ·Koichi Numata, (unknown), H. Yamamoto, H. Sekine, Katsuya Inoue, Hiroshi Maeda	6
20	Fabrication of multifilamentary Y-Ba-Cu-O oxide superconductors 1988 ·Applied Physics Letters ·H. Sekine, Katsuya Inoue, Hiroshi Maeda, Koichi Numata, (unknown), H. Yamamoto	11

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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