Alfred A. Walker

415 total citations
20 papers, 315 citations indexed

About

Alfred A. Walker is a scholar working on Cardiology and Cardiovascular Medicine, Biomedical Engineering and Molecular Biology. According to data from OpenAlex, Alfred A. Walker has authored 20 papers receiving a total of 315 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Cardiology and Cardiovascular Medicine, 8 papers in Biomedical Engineering and 5 papers in Molecular Biology. Recurrent topics in Alfred A. Walker's work include Cardiac electrophysiology and arrhythmias (7 papers), Cardiomyopathy and Myosin Studies (5 papers) and Muscle activation and electromyography studies (4 papers). Alfred A. Walker is often cited by papers focused on Cardiac electrophysiology and arrhythmias (7 papers), Cardiomyopathy and Myosin Studies (5 papers) and Muscle activation and electromyography studies (4 papers). Alfred A. Walker collaborates with scholars based in United States and Japan. Alfred A. Walker's co-authors include Ferdinand Urthaler, Thomas N. James, Karl T. Weber, Joseph S. Janicki, Stanley B. Digerness, Lloyd L. Hefner, Paul E. Wolkowicz, Russell C. Reeves, K. Kawamura and K. T. Weber and has published in prestigious journals such as Circulation Research, Journal of Applied Physiology and Journal of Pharmacology and Experimental Therapeutics.

In The Last Decade

Alfred A. Walker

18 papers receiving 285 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Alfred A. Walker United States 10 226 87 57 47 36 20 315
M. Koide Japan 11 219 1.0× 110 1.3× 10 0.2× 50 1.1× 41 1.1× 23 434
Mark Borganelli United States 9 587 2.6× 93 1.1× 24 0.4× 71 1.5× 21 0.6× 11 630
R. M. Cima United States 3 286 1.3× 111 1.3× 28 0.5× 30 0.6× 17 0.5× 4 343
R Hisano Japan 9 585 2.6× 61 0.7× 187 3.3× 108 2.3× 94 2.6× 13 701
M A Goethals Belgium 7 388 1.7× 52 0.6× 106 1.9× 33 0.7× 84 2.3× 8 446
Suma A. Thomas United States 5 280 1.2× 210 2.4× 38 0.7× 43 0.9× 20 0.6× 5 452
D. L. Brutsaert Belgium 11 300 1.3× 67 0.8× 74 1.3× 35 0.7× 38 1.1× 27 341
E. Bauereisen Germany 10 86 0.4× 40 0.5× 55 1.0× 72 1.5× 14 0.4× 43 334
L. Laszt Switzerland 9 75 0.3× 81 0.9× 23 0.4× 58 1.2× 10 0.3× 54 289
Michael Wankerl Germany 12 498 2.2× 129 1.5× 18 0.3× 22 0.5× 26 0.7× 23 557

Countries citing papers authored by Alfred A. Walker

Since Specialization
Citations

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

Fields of papers citing papers by Alfred A. Walker

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alfred A. Walker

This figure shows the co-authorship network connecting the top 25 collaborators of Alfred A. Walker. A scholar is included among the top collaborators of Alfred A. Walker 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 Alfred A. Walker. Alfred A. Walker 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
1.
Urthaler, Ferdinand, et al.. (1997). MDL-28170, a membrane-permeant calpain inhibitor, attenuates stunning and PKCε proteolysis in reperfused ferret hearts. Cardiovascular Research. 35(1). 60–67. 48 indexed citations
2.
Urthaler, Ferdinand, et al.. (1994). Estimates of beat to beat handling of activator calcium using measurements of [Ca2+]i in aequorin loaded ferret cardiac muscle. Cardiovascular Research. 28(1). 40–46. 8 indexed citations
3.
Urthaler, Ferdinand, Alfred A. Walker, Russell C. Reeves, & Lloyd L. Hefner. (1993). Beat-to-beat measurements of [Ca2+]i and force in ferret cardiac muscle after chemical loading of aequorin. American Journal of Physiology-Cell Physiology. 265(6). C1703–C1710. 5 indexed citations
4.
Urthaler, Ferdinand, Alfred A. Walker, Russell C. Reeves, & Lloyd L. Hefner. (1990). Excitation–contraction coupling model to estimate the recirculating fraction of activator calcium in intact cardiac muscle. Canadian Journal of Physiology and Pharmacology. 68(8). 1041–1048. 2 indexed citations
5.
Urthaler, Ferdinand, Alfred A. Walker, Russell C. Reeves, & Lloyd L. Hefner. (1989). Effects of ryanodine on contractile performance of intact length-clamped papillary muscle.. Circulation Research. 65(5). 1270–1282. 9 indexed citations
6.
Urthaler, Ferdinand, et al.. (1988). Maximal twitch tension in intact length-clamped ferret papillary muscles evoked by modified postextrasystolic potentiation.. Circulation Research. 62(1). 65–74. 24 indexed citations
7.
Urthaler, Ferdinand, Leonid V. Rosenshtraukh, Alfred A. Walker, & Gilbert R. Hageman. (1986). Differential inotropic actions of ethmozine and ethacizin (diethylamine analog of ethmozine). American Heart Journal. 111(3). 462–465. 5 indexed citations
8.
Urthaler, Ferdinand & Alfred A. Walker. (1984). Indirect stimulatory action of the calcium channel blocker AQA-39.. Journal of Pharmacology and Experimental Therapeutics. 230(2). 336–340. 4 indexed citations
9.
Urthaler, Ferdinand, W T Woods, Thomas N. James, & Alfred A. Walker. (1981). Effects of Adenosine on Mechanical Performance and Electrical Activity in the Canine Heart. Journal of Pharmacology and Experimental Therapeutics. 216(2). 254–260. 20 indexed citations
10.
Urthaler, Ferdinand, Alfred A. Walker, & Thomas N. James. (1980). Changing negative inotropic effect of acetylcholine in maturing canine cardiac muscle. American Journal of Physiology-Heart and Circulatory Physiology. 238(1). H1–H7. 4 indexed citations
11.
Urthaler, Ferdinand, Alfred A. Walker, & Thomas N. James. (1978). The effect of aging on ventricular contractile performance. American Heart Journal. 96(4). 481–485. 17 indexed citations
12.
Urthaler, Ferdinand, et al.. (1978). Canine atrial and ventricular muscle mechanics studied as a function of age.. Circulation Research. 42(5). 703–713. 33 indexed citations
13.
Urthaler, Ferdinand, Alfred A. Walker, & Thomas N. James. (1977). COMPARISON OF THE INOTROPIC ACTION OF MORPHINE AND KETAMINE STUDIED IN CANINE CARDIAC MUSCLE. Survey of Anesthesiology. 21(2). 120–120.
14.
Urthaler, Ferdinand, Alfred A. Walker, & Thomas N. James. (1976). Comparison of the inotropic action of morphine and ketamine studied in canine cardiac muscle. Journal of Thoracic and Cardiovascular Surgery. 72(1). 142–149. 21 indexed citations
15.
Urthaler, Ferdinand, et al.. (1975). Comparison of contractile performance of canine atrial and ventricular muscles.. Circulation Research. 37(6). 762–771. 47 indexed citations
16.
Janicki, J S, et al.. (1974). Application of a pressure servo system developed to study ventricular dynamics.. Journal of Applied Physiology. 37(5). 736–741. 16 indexed citations
17.
Walker, Alfred A., et al.. (1973). Equations for the calculation of mean ejection pressure. Cardiovascular Research. 7(4). 567–571. 13 indexed citations
18.
Weber, Karl T., Joseph S. Janicki, & Alfred A. Walker. (1972). INTRA-AORTIC BALLOON PUMPING. ASAIO Journal. 18(1). 486–491. 33 indexed citations
19.
Weber, Karl T., Joseph S. Janicki, Alfred A. Walker, & John W. Kirklin. (1972). An assessment of intra-aortic balloon pumping in hypovolemic and ischemic heart preparations. Journal of Thoracic and Cardiovascular Surgery. 64(6). 869–877. 6 indexed citations
20.
Natelson, Samuel, Alfred A. Walker, & Joseph B. Pincus. (1966). Chlordiazepoxide and Diphenylhydantoin as Antagonists to AGTH Effect on Serum Calcium and Citrate Levels.. Experimental Biology and Medicine. 122(3). 689–692.

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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