Keiichi Nomura

1.2k total citations
101 papers, 867 citations indexed

About

Keiichi Nomura is a scholar working on Organic Chemistry, Molecular Biology and Plant Science. According to data from OpenAlex, Keiichi Nomura has authored 101 papers receiving a total of 867 indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Organic Chemistry, 31 papers in Molecular Biology and 18 papers in Plant Science. Recurrent topics in Keiichi Nomura's work include Synthesis and Reactions of Organic Compounds (14 papers), Radiation Dose and Imaging (10 papers) and Advanced X-ray and CT Imaging (10 papers). Keiichi Nomura is often cited by papers focused on Synthesis and Reactions of Organic Compounds (14 papers), Radiation Dose and Imaging (10 papers) and Advanced X-ray and CT Imaging (10 papers). Keiichi Nomura collaborates with scholars based in Japan, United States and Spain. Keiichi Nomura's co-authors include Eiichi Yoshii, Masao Yoshida, Yuhei Morita, Bunzo Mikami, Takashi Haji, Masami Yamaguchi, Takehiko Shimada, Sachiko Nakamura, Tetsuya Iida and Yasuo Inubushi and has published in prestigious journals such as Journal of the American Chemical Society, Biochemical and Biophysical Research Communications and The Journal of Organic Chemistry.

In The Last Decade

Keiichi Nomura

91 papers receiving 795 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Keiichi Nomura Japan 16 369 261 195 95 85 101 867
Yoshihiro Nishikawa Japan 19 260 0.7× 367 1.4× 196 1.0× 37 0.4× 121 1.4× 95 1.0k
Barbara Podobnik Slovenia 9 65 0.2× 317 1.2× 88 0.5× 97 1.0× 70 0.8× 12 595
Alessandro Palmioli Italy 19 152 0.4× 461 1.8× 116 0.6× 47 0.5× 152 1.8× 53 966
Yoko Saikawa Japan 15 305 0.8× 163 0.6× 90 0.5× 19 0.2× 169 2.0× 48 722
Amgad Albohy Egypt 20 344 0.9× 471 1.8× 64 0.3× 59 0.6× 66 0.8× 47 884
Jian‐Guo Tang China 13 182 0.5× 326 1.2× 58 0.3× 26 0.3× 177 2.1× 41 633
Ahmed Y. Elnagar United States 11 213 0.6× 503 1.9× 104 0.5× 49 0.5× 93 1.1× 13 715
Raj Kumar Mongre South Korea 16 110 0.3× 339 1.3× 90 0.5× 89 0.9× 96 1.1× 36 737
Mariangela Miele Italy 13 190 0.5× 402 1.5× 228 1.2× 13 0.1× 84 1.0× 21 869
Amin Karmali Portugal 18 56 0.2× 418 1.6× 237 1.2× 58 0.6× 111 1.3× 69 826

Countries citing papers authored by Keiichi Nomura

Since Specialization
Citations

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

Fields of papers citing papers by Keiichi Nomura

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiichi Nomura

This figure shows the co-authorship network connecting the top 25 collaborators of Keiichi Nomura. A scholar is included among the top collaborators of Keiichi Nomura 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 Keiichi Nomura. Keiichi Nomura 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.
Sasaki, Tomoaki, Hirofumi Kuno, Keiichi Nomura, et al.. (2025). CZT-based photon-counting-detector CT with deep-learning reconstruction: image quality and diagnostic confidence for lung tumor assessment. Japanese Journal of Radiology. 43(7). 1132–1144.
2.
Matsubara, Kosuke, et al.. (2023). Number of computed tomography scanners and regional disparities based on population and medical resources in Japan. Radiological Physics and Technology. 16(3). 355–365. 5 indexed citations
3.
Fujii, Keisuke, Keiichi Nomura, Y Muramatsu, et al.. (2016). Organ Dose Evaluations Based on Monte Carlo Simulation for CT Examinations Using Tube Current Modulation. Radiation Protection Dosimetry. 174(3). 387–394. 12 indexed citations
4.
Nomura, Keiichi, et al.. (2009). Comparison of photosynthetic properties of field-grown pitaya between in summer and winter conditions.. Tropical agriculture and development. 53(3). 67–73. 2 indexed citations
5.
Nomura, Keiichi, et al.. (2007). Japanese chestnut (Castanea crenata) agglutinin may have a role as vegetative storage protein. Journal of Plant Physiology. 165(6). 671–675. 5 indexed citations
6.
Nomura, Keiichi, et al.. (2006). Effect of Temperature Regime and Soil Moisture Level on Fruit Quality of 'Summer Queen' Passionfruit (Passiflora edulis*P. edulis f. flavicarpa). Nettai Nogyo/Nettai nougyou. 50(2). 70–75. 7 indexed citations
7.
Nakamura, Sachiko, Ayako Ikegami, Masashi Mizuno, Fumio Yagi, & Keiichi Nomura. (2004). The Expression Profile of Lectin Differs from That of Seed Storage Proteins inCastanea crenataTrees. Bioscience Biotechnology and Biochemistry. 68(8). 1698–1705. 10 indexed citations
8.
Takada, Kenji, Kouichi Ishida, Norio Nakamura, et al.. (1994). Logarithmic-Converting CCD Line Sensor. 18(16). 25–30. 6 indexed citations
9.
Yuki, Yoshikazu, et al.. (1993). Charge isomers of urinary bikunin (trypsin inhibitor). Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology. 1203(2). 298–303. 18 indexed citations
10.
Kazuno, Hideki, et al.. (1993). The first total synthesis of tetronasin (M139603). Tetrahedron Letters. 34(13). 2183–2186. 26 indexed citations
11.
Nomura, Keiichi, et al.. (1992). Total synthesis of tetronomycin. The Journal of Organic Chemistry. 57(10). 2888–2902. 54 indexed citations
12.
Nomura, Keiichi, et al.. (1990). Synthesis of the polyether fragment A/B-ring system of tetronomycin.. Chemical and Pharmaceutical Bulletin. 38(6). 1781–1783. 2 indexed citations
13.
Nomura, Keiichi, et al.. (1990). Synthesis of the B/C-ring system of tetronasin (ICI-139603).. Chemical and Pharmaceutical Bulletin. 38(6). 1784–1786. 7 indexed citations
14.
Akanuma, Hiroshi, Toshikazu Yamanouchi, Hideki Ono, Keiichi Nomura, & Yasuo Akanuma. (1985). Sorbitol Determination by Liquid Chromatography: Application to Red Blood Cells of Diabetic Rats1. The Journal of Biochemistry. 97(2). 579–588. 4 indexed citations
15.
Nomura, Keiichi, et al.. (1984). Synthesis of 1-Benzazocin-5-one Derivative Having Aziridine Ring. Heterocycles. 21(2). 594–594.
16.
Nomura, Keiichi, et al.. (1979). Studies on mesoionic compounds. Part 6. Synthesis of three new mesoionic heterocyclic systems; sulphur-containing analogues of sydnone. Journal of the Chemical Society Perkin Transactions 1. 956–956. 7 indexed citations
17.
Nomura, Keiichi, et al.. (1976). Heteroaromatic analogs of benzomorphan. III. Synthesis of 1,2,3,4,5,6-hexahydro-2,6-methano-3-methylpyrido[3,2-d]azocine.. Chemical and Pharmaceutical Bulletin. 24(11). 2876–2880. 2 indexed citations
18.
Nomura, Keiichi, et al.. (1973). Synthesis and Hydrolysis of 2-Ethylenedioxy-7-azabicyclo[4.1.0]heptane. YAKUGAKU ZASSHI. 93(7). 931–935.
19.
Nomura, Keiichi, et al.. (1972). Syntheses of 1, 2, 3, 4-Tetrahydro-2-naphthylamine Derivatives. Chemical and Pharmaceutical Bulletin. 20(6). 1321–1324.
20.
Nomura, Keiichi, Sunil Kumar Talapatra, M. J. Mitchell, et al.. (1968). Alkaloids of Stephania glabra. Direct chemical correlation of the absolute configuration of some benzyltetrahydroisoquinoline, proaporphine, and aporphine alkaloids. New protoberberine alkaloid. The Journal of Organic Chemistry. 33(7). 2785–2789. 29 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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