Keiichiro Ishikawa

860 total citations
46 papers, 669 citations indexed

About

Keiichiro Ishikawa is a scholar working on Spectroscopy, Organic Chemistry and Molecular Biology. According to data from OpenAlex, Keiichiro Ishikawa has authored 46 papers receiving a total of 669 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Spectroscopy, 14 papers in Organic Chemistry and 12 papers in Molecular Biology. Recurrent topics in Keiichiro Ishikawa's work include Analytical Chemistry and Chromatography (12 papers), Mass Spectrometry Techniques and Applications (10 papers) and Asymmetric Synthesis and Catalysis (6 papers). Keiichiro Ishikawa is often cited by papers focused on Analytical Chemistry and Chromatography (12 papers), Mass Spectrometry Techniques and Applications (10 papers) and Asymmetric Synthesis and Catalysis (6 papers). Keiichiro Ishikawa collaborates with scholars based in Japan, United States and India. Keiichiro Ishikawa's co-authors include Y. Niwa, Takahiko Akiyama, Shoichiro Ozaki, Yoshinori Koga, Yoshio Niwa, Takashi Yarita, Takako Nakamura, Masahiko Numata, Toshihiro Tsuneyoshi and Nobuyasu Hanari and has published in prestigious journals such as Chemosphere, Chemical Physics Letters and Physical Chemistry Chemical Physics.

In The Last Decade

Keiichiro Ishikawa

45 papers receiving 634 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Keiichiro Ishikawa Japan	18	244	224	188	111	64	46	669
Matevž Pompe Slovenia	15	125 0.5×	190 0.8×	201 1.1×	75 0.7×	43 0.7×	50	758
Richard G. McKay United States	5	492 2.0×	161 0.7×	129 0.7×	110 1.0×	62 1.0×	6	782
F. T. Weiss Germany	13	174 0.7×	100 0.4×	159 0.8×	56 0.5×	91 1.4×	32	776
Joseph F. Anacleto Canada	14	314 1.3×	162 0.7×	62 0.3×	129 1.2×	90 1.4×	19	638
Robin Schmid Germany	17	231 0.9×	86 0.4×	326 1.7×	66 0.6×	43 0.7×	35	1.0k
Takeshi Saito Japan	17	340 1.4×	252 1.1×	262 1.4×	124 1.1×	19 0.3×	71	1.0k
Willy Nerdal Norway	19	208 0.9×	294 1.3×	521 2.8×	116 1.0×	20 0.3×	50	1.1k
Maria Rosa Festa Italy	15	100 0.4×	146 0.7×	136 0.7×	95 0.9×	17 0.3×	57	657
H. Virelizier France	16	223 0.9×	92 0.4×	156 0.8×	121 1.1×	24 0.4×	45	657
Reinhard Meusinger Germany	17	259 1.1×	262 1.2×	304 1.6×	66 0.6×	21 0.3×	63	871

Countries citing papers authored by Keiichiro Ishikawa

Since Specialization

Citations

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

Fields of papers citing papers by Keiichiro Ishikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiichiro Ishikawa

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

Numata, Masahiko, Yoshitaka Shimizu, Taichi Yamazaki, et al.. (2019). Conventional and new traceability schemes of organic standards for safe water supply in Japan. Metrologia. 56(3). 34002–34002. 5 indexed citations

Hanari, Nobuyasu, Keiichiro Ishikawa, Yoshitaka Shimizu, et al.. (2015). Certification of reference materials for the determination of alkylphenols. Analytical and Bioanalytical Chemistry. 407(11). 3239–3247. 4 indexed citations

Hanari, Nobuyasu, Nobuyasu Itoh, Keiichiro Ishikawa, Takashi Yarita, & Masahiko Numata. (2013). Variation in concentration of perfluorooctanoic acid in methanol solutions during storage. Chemosphere. 94. 116–120. 12 indexed citations

Numata, Masahiko, et al.. (2008). Mineral oil certified reference materials for the determination of polychlorinated biphenyls from the National Metrology Institute of Japan (NMIJ). Analytical and Bioanalytical Chemistry. 391(6). 1985–95. 2 indexed citations

Ishikawa, Keiichiro, Nobuyasu Hanari, Yoshitaka Shimizu, et al.. (2008). Preparation and characterization of organic calibration solutions for development of certified reference materials at the National Metrology Institute of Japan. Accreditation and Quality Assurance. 13(7). 397–408. 12 indexed citations

Ishikawa, Keiichiro, Takako Nakamura, & Yoshinori Koga. (2001). Cross‐checking of nanoelectrospray ionization mass spectrometry and computer simulation for the evaluation of the interaction strength of non‐covalently bound enkephalins in solution. Journal of Mass Spectrometry. 36(8). 937–942. 3 indexed citations

Ishikawa, Keiichiro. (1999). Analysis of Molecular Surface Structure of HIV Proteins by Deuterium Labeling and Peptide Mapping.. Journal of the Mass Spectrometry Society of Japan. 47(6). 397–400. 1 indexed citations

Sølling, Theis I., Keiichiro Ishikawa, Nobuyuki Tamaoki, et al.. (1998). Metaquat, a Paraquat Isomer Isolated from an Arrow Poison.. Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry. 52(3). 372–373. 4 indexed citations

Tuominen, Jari, et al.. (1998). Separation of cyclosporins by high-performance liquid chromatography and mass spectrometric study of cyclosporin metabolites. Rapid Communications in Mass Spectrometry. 12(16). 1085–1091. 5 indexed citations

10.

Tsuneyoshi, Toshihiro, Keiichiro Ishikawa, Yoshinori Koga, et al.. (1997). Mass Spectrometric Gene Diagnosis of One-base Substitution from Polymerase Chain Reaction Amplified Human DNA. Rapid Communications in Mass Spectrometry. 11(7). 719–722. 30 indexed citations

11.

Ishikawa, Keiichiro, Jari Tuominen, Hitoshi Nagahora, et al.. (1995). Micro-heterogeneities in Native and Recombinant Proteins Studied by Electrospray Ionization and Fast Atom Bombardment Mass Spectrometry Coupled with Micro-column Liquid Chromatography.. Journal of the Mass Spectrometry Society of Japan. 43(6). 325–338. 1 indexed citations

12.

ISHIGAMI, Yutaka, et al.. (1994). Dynamic transition of ?-helix to ?-sheet structure in linear surfactin correlating to critical micelle concentration. Biotechnology Letters. 16(9). 913–918. 16 indexed citations

13.

Ishikawa, Keiichiro, Toshihide Nishimura, Yoshinori Koga, & Yoshio Niwa. (1994). Role of coulomb energy in promoting collisionally activated dissociation of multiply charged peptides formed by electrospray ionization. Rapid Communications in Mass Spectrometry. 8(12). 933–938. 14 indexed citations

14.

Akiyama, Takahiko, Hiroyuki Nishimoto, Keiichiro Ishikawa, & Shoichiro Ozaki. (1992). Diastereoselective Addition of Organometallics to .ALPHA.-Keto Esters Bearing chiro-Inositiol Derivatives as Chiral Auxiliaries.. Chemistry Letters. 447–450. 1 indexed citations

15.

Akiyama, Takahiko, Hiroyuki Nishimoto, Keiichiro Ishikawa, & S. OZAKI. (1992). ChemInform Abstract: Diastereoselective Addition of Organometallics to α‐Keto Esters Bearing chiro‐Inositol Derivatives as Chiral Auxiliaries.. ChemInform. 23(51). 1 indexed citations

16.

Ishikawa, Keiichiro, et al.. (1990). Sequence determination of unknown cyclic peptide antibiotics by fast atom bombardment mass spectrometry. Journal of Mass Spectrometry. 19(7). 395–399. 19 indexed citations

17.

Jigami, Yoshifumi, Nobuhiro Harada, Hiroshi Uemura, et al.. (1986). Identification of a polymyxin produced by a symbiotic microorganism isolated from the brown planthopper, Nilaparavata lugens.. Agricultural and Biological Chemistry. 50(6). 1637–1639. 7 indexed citations

18.

Ishikawa, Keiichiro & Y. Niwa. (1986). Computer-aided peptide sequencing by fast atom bombardment mass spectrometry. Journal of Mass Spectrometry. 13(7). 373–380. 40 indexed citations

19.

Niwa, Yoshio, et al.. (1985). Characterization of coal liquids by mass spectrometry. I. Molecular-ion-spectrum method.. Journal of the Fuel Society of Japan. 64(3). 174–183. 2 indexed citations

20.

Yoshida, Hajime, et al.. (1984). Visbreaking reaction of atmospheric residue. (Part 2). Structural analysis and reaction mechanism for arabian heavy atmospheric residue.. Sekiyu Gakkaishi. 27(5). 406–412. 6 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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