Shigeru Obara

965 total citations
44 papers, 754 citations indexed

About

Shigeru Obara is a scholar working on Atomic and Molecular Physics, and Optics, Inorganic Chemistry and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Shigeru Obara has authored 44 papers receiving a total of 754 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Atomic and Molecular Physics, and Optics, 9 papers in Inorganic Chemistry and 8 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Shigeru Obara's work include Advanced Chemical Physics Studies (9 papers), Sports Performance and Training (7 papers) and Cardiovascular and exercise physiology (6 papers). Shigeru Obara is often cited by papers focused on Advanced Chemical Physics Studies (9 papers), Sports Performance and Training (7 papers) and Cardiovascular and exercise physiology (6 papers). Shigeru Obara collaborates with scholars based in Japan, United States and India. Shigeru Obara's co-authors include Keiji Morokuma, Kazuo Kitaura, Hiroshi Kashiwagi, Nobuaki Koga, Kimio Ohno, Eisaku Miyoshi, Toshikazu Takada, Hisao Yamaguchi, Fumio Imashiro and Bret H. Goodpaster and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Chemical Physics and SHILAP Revista de lepidopterología.

In The Last Decade

Shigeru Obara

41 papers receiving 694 citations

Peers

Shigeru Obara

AMPO

PTC

Makoto Murata Japan

James R. Damewood United States

Stefan Wieland Germany

E. VOGEL Germany

J. F. Kirner United States

Rolf Linder Germany

Koichi Mogi Japan

M.C. Piqueras Spain

J. Trotter United States

Daniel Sethio Sweden

Makoto Murata Japan

Shigeru Obara

431 ×1.5

120 ×0.6

138 ×0.7

AMPO

200 ×1.1

28 ×0.3

PTC

Citations per year, relative to Shigeru Obara Shigeru Obara (= 1×) peers Makoto Murata

Countries citing papers authored by Shigeru Obara

Since Specialization

Citations

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

Fields of papers citing papers by Shigeru Obara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Shigeru Obara

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

Tanaka, Hiroaki, Takuro Matsuda, Takuro Tobina, et al.. (2013). Product of Heart Rate and First Heart Sound Amplitude as an Index of Myocardial Metabolic Stress During Graded Exercise. Circulation Journal. 77(11). 2736–2741. 9 indexed citations

Takahashi, Masaki, Katsuhiko Suzuki, Hideki Matoba, Shizuo Sakamoto, & Shigeru Obara. (2012). Effects of different intensities of endurance exercise on oxidative stress and antioxidant capacity. SHILAP Revista de lepidopterología. 1(1). 183–189. 8 indexed citations

Nishimura, Kazuki, et al.. (2011). Relationship among First Heart Sound Amplitude, Double Product and Cardiac Parasympathetic Nervous System Modulation during Graded Exercise. 16(4). 117–122. 1 indexed citations

Azhim, Azran, Masatake Akutagawa, Kazuo Yoshizaki, et al.. (2008). Wireless blood velocity spectra measurement system for healthcare evaluation: Reference data. PubMed. 2008. 1427–1430. 2 indexed citations

Azhim, Azran, Masatake Akutagawa, Yuji Hirao, et al.. (2007). Effects of Aging and Exercise Training on the Common Carotid Blood Velocities in Healthy Men. Conference proceedings. 82 5. 989–993. 6 indexed citations

Azhim, Azran, Masatake Akutagawa, Yuji Hirao, et al.. (2007). Effect of Gender on Blood Flow Velocities and Blood Pressure: Role of Body Weight and Height. Conference proceedings. 2007. 967–970. 13 indexed citations

Azhim, Azran, Masatake Akutagawa, Yuji Hirao, et al.. (2006). Measurement of blood flow velocity waveforms in the carotid, brachial and femoral arteries during postural change. 438–442. 1 indexed citations

Obara, Shigeru, et al.. (2005). The First Heart Sound Amplitude Has a Breaking Point and Positive Relationships With Blood Lactate Concentration and Double Product in Graded Exercise. 11(1). 33–39. 1 indexed citations

Honda, Hiroaki & Shigeru Obara. (2005). Molecular Integrals Evaluated over Contracted Gaussian Functions. Journal of Computer Chemistry Japan. 4(4). 165–174. 2 indexed citations

10.

Takashima, Hajime, So Yamada, Shigeru Obara, et al.. (2002). A novel parallel algorithm for large‐scale Fock matrix construction with small locally distributed memory architectures: RT parallel algorithm. Journal of Computational Chemistry. 23(14). 1337–1346. 11 indexed citations

11.

Hashimoto, Koji, Koji Inoue, Kazuaki Murakami, et al.. (1999). MOE. 58–58. 4 indexed citations

12.

Obara, Shigeru & Tetsuya Shiuchi. (1997). Relationship between propulsive force and energy consumption in tethered swimming 710. Medicine & Science in Sports & Exercise. 29(Supplement). 124–124. 1 indexed citations

13.

Trappe, Todd A., Raymond D. Starling, Alison C. Jozsi, et al.. (1995). Thermal responses to swimming in three water temperatures: influence of a wet suit. Medicine & Science in Sports & Exercise. 27(7). 1014–1021. 33 indexed citations

14.

Imashiro, Fumio & Shigeru Obara. (1995). Tacticity-Dependent 13C NMR Chemical Shifts for Poly(vinyl alcohol) Models Studied by ab Initio Gauge-Included Atomic Orbital Calculations. Macromolecules. 28(8). 2840–2844. 11 indexed citations

15.

Yamaguchi, Hisao, Hiroyuki Tanaka, Shigeru Obara, et al.. (1993). Changes in cardiac rhythm in man during underwater submersion and swimming studied by ECG telemetry. European Journal of Applied Physiology. 66(1). 43–48. 14 indexed citations

16.

Imashiro, Fumio, et al.. (1993). Origin of the additive relationship for 13C NMR chemical shifts of alkanes as studied by ab initio GIAO calculations. Journal of the Chemical Society Perkin Transactions 2. 1535–1535. 5 indexed citations

17.

Tanaka, Hiroyuki, Yoshiaki Osaka, Shigeru Obara, Hisao Yamaguchi, & Hiroshi Miyamoto. (1992). Changes in the concentrations of Na+, K+ and Cl? in secretion from the skin during progressive increase in exercise intensity. European Journal of Applied Physiology. 64(6). 557–561. 11 indexed citations

18.

Nakano, Haruyuki, Tohru Nakajima, & Shigeru Obara. (1991). Efficient and stable method of searching for optimum structures of molecules containing cyclic parts. Chemical Physics Letters. 177(4-5). 458–462. 6 indexed citations

19.

Obara, Shigeru, et al.. (1987). An auscultatory recording method for blood pressure measurement during exercise.. The Japanese Journal of Physiology. 37(4). 757–760. 1 indexed citations

20.

Obara, Shigeru, Kazuo Kitaura, & Keiji Morokuma. (1981). A comparative study ofab-initio effective core potential and all-electron calculations for molecular structures and transition states. Theoretical Chemistry Accounts. 60(3). 227–231.

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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