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 Canada. James A. Ryan's co-authors include Rufus L. Chaney, Terry J. Logan, Kirk G. Scheckel, Samuel J. Traina, Ying Qi, 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

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 James A. Ryan 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. Journal of Environmental Quality profile →

Peers

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

#	Work	Indexed citations
1	Rare presentation of bilateral thumb psoriatic arthritis treated with arthrodesis: a case report 2021 ·AME Case Reports ·(unknown), (unknown), (unknown), (unknown), James A. Ryan, Michael W. Kessler	0
2	The effects of PTH, loading and surgical insult on cancellous bone at the bone–implant interface in the rabbit 2012 ·Bone ·Anna Fahlgren, Xu Yang, Cesare Ciani, James A. Ryan, Natalie H. Kelly, Frank C. Ko, Marjolein C. H. van der Meulen, Mathias P. Bostrom	20
3	Asymptomatic carriage of Clostridium difficile in an Irish continuing care institution for the elderly: prevalence and characteristics 2009 ·Irish Journal of Medical Science (1971 -) ·James A. Ryan, (unknown), C. Twomey, R. Paul Ross, Mary C. Rea, John MacSharry, Barbara Sheil, Fergus Shanahan	38
4	Doublecortin is expressed in articular chondrocytes 2007 ·Biochemical and Biophysical Research Communications ·Yi Zhang, James A. Ryan, Paul E. Di Cesare, Judy Liu, Christopher A. Walsh, Zongbing You	22
5	Potential role for antiangiogenic proteins in the myocardial infarction repair process 2004 ·Journal of Surgical Research ·Jess L. Thompson, James A. Ryan, Mark L. Barr, Benjamin L. Franc, Vaughn A. Starnes, Margaret A. Schwarz	9
6	Modeling pandemic preparedness scenarios: health economic implications of enhanced pandemic vaccine supply 2004 ·Virus Research ·Jan Paul Medema, York Zoellner, James A. Ryan, A.M. Palache	23
7	Peer Reviewed: Reducing Children's Risk from Lead in Soil 2004 ·Environmental Science & Technology ·James A. Ryan, Kirk G. Scheckel, William R. Berti, Sally Brown, Stan W. Casteel, Rufus L. Chaney, Judith Hallfrisch, (unknown), (unknown), Mark Maddaloni, (unknown)	171
8	Spectroscopic Speciation and Quantification of Lead in Phosphate‐Amended Soils 2004 ·Journal of Environmental Quality ·Kirk G. Scheckel, James A. Ryan	117
9	The Foundherentist View of Justification by Experience 2000 ·SHILAP Revista de lepidopterología ·James A. Ryan	0
10	The foundherentist view of justication by experience 2000 ·Principia an international journal of epistemology ·James A. Ryan	0
11	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 1995 ·Clinical Infectious Diseases ·Dagna Laufer, William M. Hurni, Barbara Watson, William J. Miller, James A. Ryan, David R. Nalin, Liliana Brown	16
12	Spectroscopic characterization of tick anticoagulant peptide 1995 ·Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology ·Gautam Sanyal, (unknown), Lloyd Waxman, (unknown), James A. Ryan, Jacqueline Gress, (unknown)	6
13	Structure of synthetic peptide analogues of an eggshell protein of Schistosoma mansoni 1993 ·Protein Science ·C. Russell Middaugh, James A. Ryan, Carl J. Burke, Henryk Mach, Adel M. Naylor, Michael J. Bogusky, Steven M. Pitzenberger, Hanlee P. Ji, John S. Cordingley, John A. Thomson	3
14	Partially structured self-associating states of acidic fibroblast growth factor 1993 ·Biochemistry ·Henryk Mach, James A. Ryan, Carl J. Burke, David B. Volkin, C. Russell Middaugh	41
15	The structure of human acidic fibroblast growth factor and its interaction with heparin 1991 ·Archives of Biochemistry and Biophysics ·Robert A. Copeland, Hanlee P. Ji, (unknown), Robert W. Williams, Karen Thompson, Wayne K. Herber, Kenneth A. Thomas, Mark W. Bruner, James A. Ryan, (unknown), Gautam Sanyal, Robert D. Sitrin, Shigeko Yamazaki, C. Russell Middaugh	111
16	Plant uptake of non-ionic organic chemicals from soils 1988 ·Chemosphere ·James A. Ryan, Rachel Bell, J. M. Davidson, G. A. O’Connor	189
17	Crop and laboratory evaluation of nitrogen release from sulfur-coated urea and osmocote 1986 ·James A. Ryan	1
18	Potassium lebanese soils as reflected by electro-ultrafiltration,chemical extraction and cropping 1983 ·Iran agricultural research ·(unknown), James A. Ryan	2
19	Available zinc status of lebanese soils 1982 ·Iran agricultural research ·Asma Absar Bhatti, K. C. Berger, James A. Ryan	2
20	Infrared Absorption Spectra of Inorganic Coördination Complexes. XXII. Infrared Studies of Methylthiourea and its Metal Complexes^1a,b 1959 ·Journal of the American Chemical Society ·Thomas J. Lane, (unknown), Aritomo Yamaguchi, J. V. Quagliano, James A. Ryan, San-ichiro Mizushima	63

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