Koichi Hayano

822 total citations
37 papers, 660 citations indexed

About

Koichi Hayano is a scholar working on Molecular Biology, Biotechnology and Plant Science. According to data from OpenAlex, Koichi Hayano has authored 37 papers receiving a total of 660 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Molecular Biology, 12 papers in Biotechnology and 12 papers in Plant Science. Recurrent topics in Koichi Hayano's work include Enzyme Production and Characterization (12 papers), Phytase and its Applications (8 papers) and Diet, Metabolism, and Disease (8 papers). Koichi Hayano is often cited by papers focused on Enzyme Production and Characterization (12 papers), Phytase and its Applications (8 papers) and Diet, Metabolism, and Disease (8 papers). Koichi Hayano collaborates with scholars based in Japan, Spain and United Kingdom. Koichi Hayano's co-authors include K. Watanabe, Sakuzo Fukui, Susumu Asakawa, Yosuke Koga, Masayo Akagawa-Matsushita, Yasuo Sakai, Masahito Hayatsu, Hisashi Yoshioka, Hiroe Yoshioka and Hiroyuki Morii and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Bacteriology and Soil Biology and Biochemistry.

In The Last Decade

Koichi Hayano

36 papers receiving 622 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Koichi Hayano Japan 15 246 194 121 119 119 37 660
G. R. Vela United States 14 197 0.8× 146 0.8× 112 0.9× 44 0.4× 85 0.7× 36 600
L. F. Linhares Brazil 14 192 0.8× 205 1.1× 86 0.7× 82 0.7× 122 1.0× 20 556
Jiujun Cheng Canada 15 382 1.6× 247 1.3× 247 2.0× 41 0.3× 53 0.4× 26 818
K. A. Malik Germany 15 340 1.4× 158 0.8× 190 1.6× 13 0.1× 175 1.5× 36 746
Dongfei Han China 16 267 1.1× 217 1.1× 105 0.9× 96 0.8× 56 0.5× 38 687
Saroj Bhosle India 13 208 0.8× 96 0.5× 58 0.5× 54 0.5× 49 0.4× 26 516
Mike Cassidy Canada 16 322 1.3× 208 1.1× 145 1.2× 23 0.2× 42 0.4× 21 972
Naoto Yoshida Japan 15 217 0.9× 123 0.6× 131 1.1× 13 0.1× 115 1.0× 44 688
Alan H. Goldstein United States 14 345 1.4× 1.1k 5.7× 117 1.0× 206 1.7× 23 0.2× 25 1.5k
Pattanop Kanokratana Thailand 17 499 2.0× 121 0.6× 253 2.1× 51 0.4× 254 2.1× 28 857

Countries citing papers authored by Koichi Hayano

Since Specialization
Citations

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

Fields of papers citing papers by Koichi Hayano

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Hayano

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Hayano. A scholar is included among the top collaborators of Koichi Hayano 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 Hayano. Koichi Hayano is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Watanabe, K., et al.. (2003). Bacterial extracellular protease activities in field soils under different fertilizer managements. Canadian Journal of Microbiology. 49(5). 305–312. 15 indexed citations
2.
Sakai, Yasuo, Masahito Hayatsu, & Koichi Hayano. (2002). Use of tween 20 as a substrate for assay of lipase activity in soils. Soil Science & Plant Nutrition. 48(5). 729–734. 14 indexed citations
3.
Sakai, Yasuo, et al.. (2002). An Improved Method for Determination of p-Nitrophenyl Acetate Esterase Activity in Soil. Nihon Dojo Hiryogaku zasshi/Nippon dojō hiryōgaku zasshi. 73(1). 45–47. 1 indexed citations
4.
5.
Hayatsu, Masahito, et al.. (2001). Purification and characterization of carbaryl hydrolase fromArthrobactersp. RC100. FEMS Microbiology Letters. 201(1). 99–103. 31 indexed citations
6.
Hayano, Koichi. (1996). Characterization and Origin of Protease Activity in Cultivated Soils. Japan Agricultural Research Quarterly JARQ. 30(2). 79–84. 1 indexed citations
7.
Hayano, Koichi, K. Watanabe, & Susumu Asakawa. (1995). Activity of protease extracted from rice-rhizosphere soils under double cropping of rice and wheat. Soil Science & Plant Nutrition. 41(3). 597–603. 5 indexed citations
8.
Takeuchi, Michio & Koichi Hayano. (1994). Characterization of a protease component extracted from a paddy soil under monoculture of rice. Soil Science & Plant Nutrition. 40(4). 691–695. 2 indexed citations
9.
Watanabe, K. & Koichi Hayano. (1994). Source of soil protease based on the splitting sites of a polypeptide. Soil Science & Plant Nutrition. 40(4). 697–701. 4 indexed citations
10.
Watanabe, K. & Koichi Hayano. (1993). Distribution and identification of proteolytic Bacillus spp. in paddy field soil under rice cultivation. Canadian Journal of Microbiology. 39(7). 674–680. 43 indexed citations
11.
Hayano, Koichi. (1993). Protease activity in a paddy field soil: Origin and some properties. Soil Science & Plant Nutrition. 39(3). 539–546. 13 indexed citations
12.
Hayano, Koichi, et al.. (1990). Potential neuroleptic agents, N-((2-pyrrolidinyl)methyl)-2,3-dihydrobenzofuran-7-carboxamide derivatives.. Chemical and Pharmaceutical Bulletin. 38(6). 1609–1615. 5 indexed citations
13.
Hayano, Koichi. (1983). Fractionation by deae-cellulose column chromatography and some properties of phosphodiesterase extracted from an andosol under forest. Soil Science & Plant Nutrition. 29(2). 175–184. 3 indexed citations
14.
Hayano, Koichi, et al.. (1983). A method for estimation ofL-glutaminase activity in soils. Soil Science & Plant Nutrition. 29(3). 295–303. 8 indexed citations
15.
Hayano, Koichi, et al.. (1976). Dependency of glucose transport on D-glucoside 3-dehydrogenase as a conversion system of glucose to 3-ketoglucose in Agrobacterium tumefaciens.. Agricultural and Biological Chemistry. 40(11). 2299–2300. 2 indexed citations
16.
Hayano, Koichi. (1973). A method for the determination of β-glucosidase activity in soil. Soil Science & Plant Nutrition. 19(2). 103–108. 87 indexed citations
17.
Fukui, Sakuzo & Koichi Hayano. (1969). Micro Methods for Determination of 3-Ketosucrose and 3-Ketoglucose. Agricultural and Biological Chemistry. 33(7). 1013–1017. 31 indexed citations
18.
Hayano, Koichi, et al.. (1968). [Biological and pharmacological studies on Tuberactin, a new antibiotic].. PubMed. 43(7). 249–53. 2 indexed citations
19.
Hayano, Koichi & Sakuzo Fukui. (1968). Biochemical Conversion of Cellobiose to 3-Ketocellobiose. The Journal of Biochemistry. 64(6). 901–903. 13 indexed citations
20.
Hayano, Koichi & Sakuzo Fukui. (1967). Purification and Properties of 3-Ketosucrose-forming Enzyme from the Cells of Agrobacterium tumefaciens. Journal of Biological Chemistry. 242(16). 3665–3672. 57 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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