Keiji Okada

1.5k total citations
95 papers, 1.1k citations indexed

About

Keiji Okada is a scholar working on Agronomy and Crop Science, Small Animals and Global and Planetary Change. According to data from OpenAlex, Keiji Okada has authored 95 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Agronomy and Crop Science, 29 papers in Small Animals and 16 papers in Global and Planetary Change. Recurrent topics in Keiji Okada's work include Animal health and immunology (22 papers), Reproductive Physiology in Livestock (22 papers) and Ruminant Nutrition and Digestive Physiology (19 papers). Keiji Okada is often cited by papers focused on Animal health and immunology (22 papers), Reproductive Physiology in Livestock (22 papers) and Ruminant Nutrition and Digestive Physiology (19 papers). Keiji Okada collaborates with scholars based in Japan, Egypt and Hungary. Keiji Okada's co-authors include M Fukunaga, Jun Yasuda, Miki Nakao, Shigeru Sato, Tatsuya Konishi, Masahito Fukunaga, Minoru Nakao, Masao Miyazaki, Kazunori Ito and Kentaro Ikuta and has published in prestigious journals such as SHILAP Revista de lepidopterología, Applied and Environmental Microbiology and Scientific Reports.

In The Last Decade

Keiji Okada

86 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Keiji Okada Japan 19 296 285 280 263 180 95 1.1k
Mark L. Anderson United States 18 250 0.8× 269 0.9× 143 0.5× 159 0.6× 186 1.0× 45 1.6k
Nemi C. Jain United States 10 183 0.6× 184 0.6× 278 1.0× 113 0.4× 229 1.3× 23 1.4k
Antônio Humberto Hamad Minervino Brazil 24 790 2.7× 293 1.0× 230 0.8× 311 1.2× 230 1.3× 143 1.9k
Kerstin Müller Germany 23 152 0.5× 291 1.0× 457 1.6× 572 2.2× 194 1.1× 124 2.0k
Robert J. Bildfell United States 19 173 0.6× 103 0.4× 239 0.9× 559 2.1× 99 0.6× 66 1.5k
Brian Aldridge United States 25 133 0.4× 325 1.1× 291 1.0× 282 1.1× 168 0.9× 76 1.7k
Alessandro Dondo Italy 21 94 0.3× 273 1.0× 150 0.5× 396 1.5× 77 0.4× 88 1.4k
Carmen Maresca Italy 18 138 0.5× 135 0.5× 113 0.4× 157 0.6× 107 0.6× 49 969
Peter Buss South Africa 21 88 0.3× 326 1.1× 364 1.3× 742 2.8× 175 1.0× 129 1.8k
Patrick T. Redig United States 19 281 0.9× 81 0.3× 61 0.2× 227 0.9× 156 0.9× 76 1.1k

Countries citing papers authored by Keiji Okada

Since Specialization
Citations

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

Fields of papers citing papers by Keiji Okada

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiji Okada

This figure shows the co-authorship network connecting the top 25 collaborators of Keiji Okada. A scholar is included among the top collaborators of Keiji 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 Keiji Okada. Keiji Okada 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
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Ellah, Mahmoud R. Abd, et al.. (2015). Comparison between Serum and Saliva Biochemical Constituents in Dairy Cows during Lactation and Dry Period. SHILAP Revista de lepidopterología. 4 indexed citations
3.
Ellah, Mahmoud R. Abd, et al.. (2015). Evaluation of oxidative DNA damage in blood lymphocytes during the transition period in dairy cows. Journal of Applied Animal Research. 44(1). 323–325. 6 indexed citations
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Kawamura, Shuso, et al.. (2010). Utilization of Snow Piles Removed from Streets Downtown for Cooling a Rice Storehouse. Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University). 56(1). 59–65. 1 indexed citations
8.
Ikuta, Kentaro, Keiji Okada, Seiji Sato, & Jun Yasuda. (2010). Effects of heat stress on blood chemistry and hematological profiles in lactating dairy cows. 1(4). 190–196. 3 indexed citations
9.
Miyazaki, Masao, et al.. (2010). Real time evaluation of abomasal curd formation in preruminant calves by ultrasonography. 1(2). 54–61. 1 indexed citations
10.
Okada, Keiji, et al.. (2003). Changes in D/L-lactic Acid and Ammonia in Blood and Rumen Fluid of Cows Fed a High-starch Diet. Journal of the Japan Veterinary Medical Association. 56(7). 450–454. 1 indexed citations
11.
Okada, Keiji, et al.. (2003). Relationship between Milk Constituents and White Scours Caused in Japanese Black Calves by Changes in Dam Feeding. Journal of the Japan Veterinary Medical Association. 56(5). 311–315. 1 indexed citations
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Sato, Jun, et al.. (2002). Serum Activity of Tartrate-resistant Acid Phosphatase in Cows from Farms Where Milk Fever was Frequent and Farms Where It Was Rare. Journal of the Japan Veterinary Medical Association. 55(9). 580–583. 1 indexed citations
14.
Okada, Keiji, et al.. (2002). Effects of Diet Change on Rumen Condition and Blood Constituents in Japanese Black Cattle and on the Feculent State of Calves. Journal of the Japan Veterinary Medical Association. 55(4). 209–214. 1 indexed citations
15.
Okada, Keiji & Jun Yasuda. (2001). Methods for Collection and Preservation of Cattle Blood for Metabolic Profile Test. 24(1). 13–18. 2 indexed citations
16.
Okada, Keiji, et al.. (1997). Relationship between White Scour of Calf and Alcohol Stability of Milk in Japanese Black Cattle. Journal of the Japan Veterinary Medical Association. 50(2). 74–79. 2 indexed citations
17.
Okada, Keiji, et al.. (1997). Nuturitional Conditions of the Dams and the White Scour of Calf in Japanese black cattle. Journal of the Japan Veterinary Medical Association. 50(4). 209–213. 3 indexed citations
18.
Itoi, Kazumi, et al.. (1996). Treatment of Obstructing Endotracheobronchial Polypoid Tumors with Endoscopic Polypectomy.. Haigan. 36(7). 873–877. 2 indexed citations
19.
Kikuchi, Kaoru, et al.. (1995). A Case of Ovarian Granulosa-Cell Tumor in a Peripartus Cow. Journal of the Japan Veterinary Medical Association. 48(8). 541–543. 1 indexed citations
20.
Fujita, Shigeru, et al.. (1993). Plasma vitamin A, D and E concentrations on "Hyena Disease" in cattle.. 16(1). 22–28. 2 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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