James A. Ryan

9.6k total citations · 2 hit papers
129 papers, 7.1k citations indexed

About

James A. Ryan is a scholar working on Pollution, Health, Toxicology and Mutagenesis and Analytical Chemistry. According to data from OpenAlex, James A. Ryan has authored 129 papers receiving a total of 7.1k indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Pollution, 13 papers in Health, Toxicology and Mutagenesis and 13 papers in Analytical Chemistry. Recurrent topics in James A. Ryan's work include Heavy metals in environment (41 papers), Analytical Chemistry and Chromatography (8 papers) and Radioactive element chemistry and processing (7 papers). James A. Ryan is often cited by papers focused on Heavy metals in environment (41 papers), Analytical Chemistry and Chromatography (8 papers) and Radioactive element chemistry and processing (7 papers). James A. Ryan collaborates with scholars based in United States, United Kingdom and Ireland. James A. Ryan's co-authors include Rufus L. Chaney, Terry J. Logan, Kirk G. Scheckel, Ying Qi, Samuel J. Traina, Pengchu Zhang, Nicholas T. Basta, Souhail R. Al‐Abed, Sally Brown and D. R. Keeney and has published in prestigious journals such as Nature, Journal of the American Chemical Society and JAMA.

In The Last Decade

James A. Ryan

122 papers receiving 6.5k citations

Hit Papers

align trajectories sort by overperformance

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.

In situ lead immobilization by apatite

1993 579 citations Ying Qi, Samuel J. Traina et al. Environmental Science & Technology profile →
Trace Element Chemistry in Residual‐Treated Soil: Key Concepts and Metal Bioavailability

2005 535 citations James A. Ryan, Rufus L. Chaney et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
James A. Ryan	3.7k	1.4k	1.0k	871	761	129	7.1k
Paul M. Bertsch	2.0k 0.6×	1.4k 1.0×	1.4k 1.3×	1.1k 1.2×	831 1.1×	160	9.5k
Lei Luo	2.0k 0.6×	1.2k 0.9×	992 1.0×	932 1.1×	576 0.8×	250	6.9k
Raina M. Maier	4.4k 1.2×	1.5k 1.1×	1.7k 1.7×	474 0.5×	1.5k 2.0×	147	9.8k
Peng Cai	2.3k 0.6×	923 0.7×	720 0.7×	1.5k 1.8×	705 0.9×	180	7.5k
Michael Sander	3.0k 0.8×	1.5k 1.0×	1.3k 1.2×	2.1k 2.4×	466 0.6×	140	11.2k
Hans Christian Bruun Hansen	2.2k 0.6×	892 0.6×	1.8k 1.8×	1.5k 1.7×	1.3k 1.7×	274	8.9k
Hua Zhang	2.9k 0.8×	2.9k 2.1×	865 0.9×	1.5k 1.7×	768 1.0×	369	10.3k
Gijs Du Laing	4.5k 1.2×	2.3k 1.6×	2.2k 2.1×	1.5k 1.8×	1.2k 1.6×	229	9.6k
Erica Donner	2.1k 0.6×	975 0.7×	486 0.5×	571 0.7×	867 1.1×	147	6.2k
Lei Xiang	2.6k 0.7×	1.5k 1.1×	876 0.9×	445 0.5×	622 0.8×	165	6.3k

Countries citing papers authored by James A. Ryan

Since Specialization

Citations

This map shows the geographic impact of James 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 James 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 James A. Ryan more than expected).

Fields of papers citing papers by James A. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

This figure shows the co-authorship network connecting the top 25 collaborators of James A. Ryan. A scholar is included among the top collaborators of James 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 James A. Ryan. James A. Ryan 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:

20 of 20 papers shown

Carter, Laura, James A. Ryan, Adam Dowle, et al.. (2014). Fate and Uptake of Pharmaceuticals in Soil–Earthworm Systems. Environmental Science & Technology. 48(10). 5955–5963. 85 indexed citations

Fahlgren, Anna, Xu Yang, Cesare Ciani, et al.. (2012). The effects of PTH, loading and surgical insult on cancellous bone at the bone–implant interface in the rabbit. Bone. 52(2). 718–724. 20 indexed citations

Ryan, James A., et al.. (2009). Mechanical compression of articular cartilage induces chondrocyte proliferation and inhibits proteoglycan synthesis by activation of the ERK pathway: implications for tissue engineering and regenerative medicine. Journal of Tissue Engineering and Regenerative Medicine. 3(2). 107–116. 43 indexed citations

Zhang, Yi, James A. Ryan, Paul E. Di Cesare, et al.. (2007). Doublecortin is expressed in articular chondrocytes. Biochemical and Biophysical Research Communications. 363(3). 694–700. 22 indexed citations

Chaney, Rufus L., Philip G. Reeves, James A. Ryan, et al.. (2004). An improved understanding of soil Cd risk to humans and low cost methods to phytoextract Cd from contaminated soils to prevent soil Cd risks. BioMetals. 17(5). 549–553. 170 indexed citations

Thompson, Jess L., James A. Ryan, Mark L. Barr, et al.. (2004). Potential role for antiangiogenic proteins in the myocardial infarction repair process. Journal of Surgical Research. 116(1). 156–164. 9 indexed citations

Medema, Jan Paul, York Zoellner, James A. Ryan, & A.M. Palache. (2004). Modeling pandemic preparedness scenarios: health economic implications of enhanced pandemic vaccine supply. Virus Research. 103(1-2). 9–15. 23 indexed citations

Chen, Jiann‐Long, Souhail R. Al‐Abed, James A. Ryan, & Zhenbin Li. (2001). Effects of pH on dechlorination of trichloroethylene by zero-valent iron. Journal of Hazardous Materials. 83(3). 243–254. 179 indexed citations

Ryan, James A.. (2000). The Foundherentist View of Justification by Experience. SHILAP Revista de lepidopterología.

10.

Ryan, James A.. (2000). The foundherentist view of justication by experience. Principia an international journal of epistemology. 4(1). 79–88.

11.

Ryan, James A.. (2000). Coherentist Naturalism in Ethics. Journal of Philosophical Research. 25. 471–487.

12.

Laufer, Dagna, William M. Hurni, Barbara Watson, et al.. (1995). Saliva and Serum as Diagnostic Media for Antibody to Hepatitis A Virus in Adults and in Individuals Who Have Received an Inactivated Hepatitis A Vaccine. Clinical Infectious Diseases. 20(4). 868–871. 16 indexed citations

13.

Qi, Ying, Samuel J. Traina, Terry J. Logan, & James A. Ryan. (1993). In situ lead immobilization by apatite. Environmental Science & Technology. 27(9). 1803–1810. 579 indexed citations breakdown →

14.

Middaugh, C. Russell, James A. Ryan, Carl J. Burke, et al.. (1993). Structure of synthetic peptide analogues of an eggshell protein of Schistosoma mansoni. Protein Science. 2(6). 900–914. 3 indexed citations

15.

Sanyal, Gautam, et al.. (1991). Stabilization of the FK506 binding protein by ligand binding. Biochemical and Biophysical Research Communications. 179(2). 741–748. 11 indexed citations

16.

Copeland, Robert A., Hanlee P. Ji, Robert W. Williams, et al.. (1991). The structure of human acidic fibroblast growth factor and its interaction with heparin. Archives of Biochemistry and Biophysics. 289(1). 53–61. 111 indexed citations

17.

Ryan, James A., et al.. (1991). Rapid verification of identity and content of drug formulations using mid-infrared spectroscopy. Journal of Pharmaceutical and Biomedical Analysis. 9(4). 303–310. 23 indexed citations

18.

McDonnell, W. Michael, et al.. (1989). Effect of iron on the guaiac reaction. Gastroenterology. 96(1). 74–78. 17 indexed citations

19.

Ryan, James A., et al.. (1983). Potassium lebanese soils as reflected by electro-ultrafiltration,chemical extraction and cropping. Iran agricultural research. 2(1). 11–22. 2 indexed citations

20.

Bhatti, Asma Absar, K. C. Berger, & James A. Ryan. (1982). Available zinc status of lebanese soils. Iran agricultural research. 1(1). 41–47. 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.

Explore authors with similar magnitude of impact