S Okada

2.9k total citations · 1 hit paper
13 papers, 2.5k citations indexed

About

S Okada is a scholar working on Epidemiology, Hepatology and Infectious Diseases. According to data from OpenAlex, S Okada has authored 13 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Epidemiology, 4 papers in Hepatology and 2 papers in Infectious Diseases. Recurrent topics in S Okada's work include Hepatitis C virus research (4 papers), Hepatitis B Virus Studies (3 papers) and Viral gastroenteritis research and epidemiology (2 papers). S Okada is often cited by papers focused on Hepatitis C virus research (4 papers), Hepatitis B Virus Studies (3 papers) and Viral gastroenteritis research and epidemiology (2 papers). S Okada collaborates with scholars based in Japan and United States. S Okada's co-authors include Hiroaki Okamoto, Kiyohiko Kurai, Yuichi Sugiyama, Y. Miyakawa, Y. Akahane, Yoshiki Sugai, Toru Tanaka, Koei Sato, M Mayumi and Fumio Tsuda and has published in prestigious journals such as Biochemical and Biophysical Research Communications, Endocrinology and Journal of Clinical Microbiology.

In The Last Decade

S Okada

12 papers receiving 2.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Typing hepatitis C virus by polymerase chain reaction with type-specific primers: application to clinical surveys and tracing infectious sources

1992 1.1k citations Hiroaki Okamoto, Yuichi Sugiyama et al. Journal of General Virology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S Okada Japan	8	1.9k	1.7k	341	245	240	13	2.5k
Tram N. Q. Pham Canada	20	743 0.4×	733 0.4×	149 0.4×	248 1.0×	36 0.1×	46	1.6k
Karla Lee United Kingdom	22	221 0.1×	352 0.2×	50 0.1×	78 0.3×	13 0.1×	61	1.5k
Douglas Stevenson United States	21	221 0.1×	346 0.2×	28 0.1×	83 0.3×	9 0.0×	53	1.2k
O Crivelli Italy	14	1.1k 0.6×	1.2k 0.7×	48 0.1×	191 0.8×	4 0.0×	28	1.6k
S H Han Taiwan	21	290 0.1×	458 0.3×	138 0.4×	131 0.5×	2 0.0×	50	1.4k
Nigel J. Stevenson Ireland	21	110 0.1×	324 0.2×	45 0.1×	324 1.3×	14 0.1×	35	1.3k
Matthias Hesse United States	11	100 0.1×	222 0.1×	64 0.2×	204 0.8×	15 0.1×	16	1.9k
Lori Garman United States	16	27 0.0×	527 0.3×	76 0.2×	287 1.2×	20 0.1×	34	1.9k
Maurine R. Hobbs United States	21	38 0.0×	280 0.2×	101 0.3×	98 0.4×	12 0.1×	31	1.4k
Akio Hayashi Japan	22	35 0.0×	365 0.2×	17 0.0×	357 1.5×	18 0.1×	71	1.5k

Countries citing papers authored by S Okada

Since Specialization

Citations

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

Fields of papers citing papers by S Okada

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S Okada

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

All Works

Sort: Min cites: Since: Top N: Style:

13 of 13 papers shown

1.

Shimizu, Hiroyuki, Ko Hashimoto, Masao Nakata, et al.. (2009). Peripheral Administration of Nesfatin-1 Reduces Food Intake in Mice: The Leptin-Independent Mechanism. Endocrinology. 150(2). 662–671. 278 indexed citations

2.

Furukawa, H, S Okada, & Tadao Kakizoe. (1999). Early diagnosis of pancreatic cancer.. PubMed. 46(25). 4–7. 5 indexed citations

3.

Tada, Kouji, et al.. (1997). Role of screening for hepatitis C virus in children with malignant disease and who undergo bone marrow transplantation. Transfusion. 37(6). 641–644. 14 indexed citations

4.

Okada, S, et al.. (1996). [The Somatropin Reference Standard (Control 951) of the National Institute of Health Sciences].. PubMed. 130–5. 1 indexed citations

5.

Ema, Masatsugu, Akira Harazono, Emiko Miyawaki, et al.. (1996). [The Human Menopausal Gonadotrophin Reference Standard (Control 961) of the National Institute of Health Sciences].. PubMed. 138–40. 1 indexed citations

6.

Sakai, Norio, Koji Inui, Noriko Fujii, et al.. (1994). Krabbe Disease: Isolation and Characterization of a Full-Length cDNA for Human Galactocerebrosidase. Biochemical and Biophysical Research Communications. 198(2). 485–491. 76 indexed citations

7.

Tajiri, Hitoshi, et al.. (1994). Fructose Malabsorption in a Child with Chronic Diarrhea. Journal of Pediatric Gastroenterology and Nutrition. 18(1). 100–103. 3 indexed citations

8.

Okamoto, Hiroaki, Yuichi Sugiyama, S Okada, et al.. (1992). Typing hepatitis C virus by polymerase chain reaction with type-specific primers: application to clinical surveys and tracing infectious sources. Journal of General Virology. 73(3). 673–679. 1123 indexed citations breakdown →

9.

Okamoto, Hiroaki, S Okada, Yuichi Sugiyama, et al.. (1991). Nucleotide sequence of the genomic RNA of hepatitis C virus isolated from a human carrier: comparison with reported isolates for conserved and divergent regions. Journal of General Virology. 72(11). 2697–2704. 429 indexed citations

10.

Okamoto, Hiroaki, S Okada, Tsukasa Tanaka, et al.. (1990). Detection of hepatitis C virus RNA by a two-stage polymerase chain reaction with two pairs of primers deduced from the 5'-noncoding region.. PubMed. 60(4). 215–22. 467 indexed citations

11.

Okada, S, Seiji Sekine, Tamie Ando, et al.. (1990). Antigenic characterization of small, round-structured viruses by immune electron microscopy. Journal of Clinical Microbiology. 28(6). 1244–1248. 51 indexed citations

12.

Tokunaga, Hiroshi, S Okada, & Takehiro Kimura. (1989). [Determination of nicotinic acid in injections by high-performance liquid chromatography].. PubMed. 108–12. 1 indexed citations

13.

Hayashi, Yujiro, Tamie Ando, Etsuko UTAGAWA, et al.. (1989). Western blot (immunoblot) assay of small, round-structured virus associated with an acute gastroenteritis outbreak in Tokyo. Journal of Clinical Microbiology. 27(8). 1728–1733. 39 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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