J. A. Ryan

755 total citations
13 papers, 628 citations indexed

About

J. A. Ryan is a scholar working on Epidemiology, Microbiology and Molecular Biology. According to data from OpenAlex, J. A. Ryan has authored 13 papers receiving a total of 628 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Epidemiology, 8 papers in Microbiology and 4 papers in Molecular Biology. Recurrent topics in J. A. Ryan's work include Pneumonia and Respiratory Infections (7 papers), Bacterial Infections and Vaccines (7 papers) and Infective Endocarditis Diagnosis and Management (2 papers). J. A. Ryan is often cited by papers focused on Pneumonia and Respiratory Infections (7 papers), Bacterial Infections and Vaccines (7 papers) and Infective Endocarditis Diagnosis and Management (2 papers). J. A. Ryan collaborates with scholars based in United States, Canada and India. J. A. Ryan's co-authors include Lawrence E. Hightower, F. E. Ashton, A Borczyk, Dorothy Jane Huang, N Riedel, Eui‐Ju Choi, Dominique A. Caugant, William A. Toscano, W M Johnson and Harold J. Jennings and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Clinical Microbiology and The Journal of Infectious Diseases.

In The Last Decade

J. A. Ryan

13 papers receiving 581 citations

Peers

J. A. Ryan

MICRO

EPIDE

HTM

Gary S. Bignami United States

Aniel Sánchez Cuba

M.E. Boling United States

Karl Gensberg United Kingdom

Steinar M. Paulsen Norway

Ladislav Novotný Czechia

Adriana Esteves Uruguay

Makoto Hirayama Japan

Ian G. Giles United Kingdom

S.D.N.K. Bathige South Korea

Gary S. Bignami United States

J. A. Ryan

85 ×0.4

MICRO

30 ×0.1

EPIDE

402 ×2.1

56 ×0.3

HTM

27 ×0.4

Citations per year, relative to J. A. Ryan J. A. Ryan (= 1×) peers Gary S. Bignami

Countries citing papers authored by J. A. Ryan

Since Specialization

Citations

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

Fields of papers citing papers by J. A. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. A. Ryan. 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 J. A. Ryan. The network helps show where J. A. Ryan may publish in the future.

Co-authorship network of co-authors of J. A. Ryan

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

All Works

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13 of 13 papers shown

Krone, P.H., Scott R. Blechinger, Tyler G. Evans, et al.. (2004). Use of fish liver PLHC-1 cells and zebrafish embryos in cytotoxicity assays☆. Methods. 35(2). 176–187. 24 indexed citations

Kertesz, Daniel A., Michael B. Coulthart, J. A. Ryan, W M Johnson, & F. E. Ashton. (1998). Serogroup B, Electrophoretic Type 15Neisseria meningitidisin Canada. The Journal of Infectious Diseases. 177(6). 1754–1757. 52 indexed citations

Ryan, J. A. & Lawrence E. Hightower. (1996). Stress proteins as molecular biomarkers for environmental toxicology. Birkhäuser Basel eBooks. 77. 411–424. 119 indexed citations

Ryan, J. A. & Lawrence E. Hightower. (1994). Evaluation of heavy-metal ion toxicity in fish cells using a combined stress protein and cytotoxicity assay. Environmental Toxicology and Chemistry. 13(8). 1231–1240. 127 indexed citations

Geary, Steven J., J. A. Ryan, Mark H. Forsyth, & Vito G. Sasseville. (1993). Development of monoclonal antibodies for the detection of Mycoplasma pneumoniae. Molecular and Cellular Probes. 7(2). 133–138. 3 indexed citations

Strathdee, Craig A., Shaun Tyler, J. A. Ryan, W M Johnson, & F. E. Ashton. (1993). Genomic fingerprinting of Neisseria meningitidis associated with group C meningococcal disease in Canada. Journal of Clinical Microbiology. 31(9). 2506–2508. 30 indexed citations

Choi, Eui‐Ju, et al.. (1991). Dioxin induces transforming growth factor-alpha in human keratinocytes. Journal of Biological Chemistry. 266(15). 9591–9597. 92 indexed citations

Ashton, F. E., et al.. (1991). Emergence of a virulent clone of Neisseria meningitidis serotype 2a that is associated with meningococcal group C disease in Canada. Journal of Clinical Microbiology. 29(11). 2489–2493. 107 indexed citations

Ashton, F. E., J. A. Ryan, Francis Michon, & Harold J. Jennings. (1989). Protective efficacy of mouse serum to the N-propionyl derivative of meningococcal group B polysaccharide. Microbial Pathogenesis. 6(6). 455–458. 30 indexed citations

10.

Ashton, F. E., J. A. Ryan, & B. B. Diena. (1986). Meningococcal serotypes in Canada, 1977?1984. Antonie van Leeuwenhoek. 52(3). 245–246. 1 indexed citations

11.

Ashton, F. E., J. A. Ryan, B. B. Diena, & Carl E. Frasch. (1983). Immunogenic and protective properties of meningococcal serotype 2a protein in the hen-embryo model. Journal of Medical Microbiology. 16(4). 443–457. 6 indexed citations

12.

Ashton, F. E., et al.. (1983). Serotypes of Neisseria meningitidis associated with an increased incidence of meningitis cases in the Hamilton area, Ontario, during 1978 and 1979. Canadian Journal of Microbiology. 29(1). 129–136. 18 indexed citations

13.

Jennings, Harold J., Czesław Ługowski, F. E. Ashton, & J. A. Ryan. (1983). The structure of the capsular polysaccharide obtained from a new serogroup (L) of Neisseria meningitidis. Carbohydrate Research. 112(1). 105–111. 19 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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