Lloyd L. Hefner

744 total citations
20 papers, 608 citations indexed

About

Lloyd L. Hefner is a scholar working on Cardiology and Cardiovascular Medicine, Biomedical Engineering and Molecular Biology. According to data from OpenAlex, Lloyd L. Hefner has authored 20 papers receiving a total of 608 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Cardiology and Cardiovascular Medicine, 11 papers in Biomedical Engineering and 4 papers in Molecular Biology. Recurrent topics in Lloyd L. Hefner's work include Cardiomyopathy and Myosin Studies (9 papers), Cardiovascular Function and Risk Factors (9 papers) and Muscle activation and electromyography studies (8 papers). Lloyd L. Hefner is often cited by papers focused on Cardiomyopathy and Myosin Studies (9 papers), Cardiovascular Function and Risk Factors (9 papers) and Muscle activation and electromyography studies (8 papers). Lloyd L. Hefner collaborates with scholars based in United States. Lloyd L. Hefner's co-authors include T.Joseph Reeves, William B. Jones, John D. Carroll, Cecil Coghlan, Gustavo Prieto, Willem Klip, Thomas Bowen, Russell C. Reeves, L. Thomas Sheffield and H. Cecil Coghlan and has published in prestigious journals such as Circulation, Journal of Clinical Investigation and Journal of Applied Physics.

In The Last Decade

Lloyd L. Hefner

20 papers receiving 508 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Lloyd L. Hefner United States 12 510 213 113 70 52 20 608
R Hisano Japan 9 585 1.1× 187 0.9× 108 1.0× 94 1.3× 40 0.8× 13 701
WM Daggett United States 10 340 0.7× 141 0.7× 116 1.0× 75 1.1× 20 0.4× 11 484
D. M. Griggs United States 12 415 0.8× 101 0.5× 77 0.7× 182 2.6× 44 0.8× 18 541
André A. Charlier Belgium 11 332 0.7× 70 0.3× 95 0.8× 98 1.4× 32 0.6× 17 465
M A Goethals Belgium 7 388 0.8× 106 0.5× 33 0.3× 84 1.2× 28 0.5× 8 446
ML Weisfeldt United States 8 293 0.6× 62 0.3× 37 0.3× 82 1.2× 34 0.7× 12 376
K. Sunagawa Japan 9 353 0.7× 90 0.4× 107 0.9× 53 0.8× 25 0.5× 19 432
E. F. Steinmetz United States 12 403 0.8× 60 0.3× 219 1.9× 133 1.9× 16 0.3× 35 578
Junichi Araki Japan 16 612 1.2× 69 0.3× 59 0.5× 55 0.8× 61 1.2× 57 723
Wadie M. Fam Canada 8 429 0.8× 92 0.4× 139 1.2× 301 4.3× 34 0.7× 12 619

Countries citing papers authored by Lloyd L. Hefner

Since Specialization
Citations

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

Fields of papers citing papers by Lloyd L. Hefner

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Lloyd L. Hefner. 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 Lloyd L. Hefner. The network helps show where Lloyd L. Hefner may publish in the future.

Co-authorship network of co-authors of Lloyd L. Hefner

This figure shows the co-authorship network connecting the top 25 collaborators of Lloyd L. Hefner. A scholar is included among the top collaborators of Lloyd L. Hefner 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 Lloyd L. Hefner. Lloyd L. Hefner 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, 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
2.
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
3.
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
4.
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
5.
Reeves, Russell C., et al.. (1982). Mechanism of additive effects of digoxin and quinidine on contractility in isolated cardiac muscle. The American Journal of Cardiology. 50(3). 483–487. 3 indexed citations
6.
Klip, Willem, et al.. (1981). An energy density function for papillary muscle encompassing both elastic and contractile properties. Journal of Applied Physics. 52(5). 3674–3687. 2 indexed citations
7.
Reeves, Russell C., et al.. (1980). Effect of damaged ends in papillary muscle preparations. American Journal of Physiology-Heart and Circulatory Physiology. 238(1). H14–H23. 37 indexed citations
8.
Kawamura, Keishiro, Thomas N. James, Ferdinand Urthaler, & Lloyd L. Hefner. (1979). FINE STRUCTURE OF MYOTENDINOUS JUNCTIONS OF VENTRICULAR PAPILLARY MUSCLES OF THE CAT (FELIS DOMESTICA) AND BAT (MYOTIS LUCIFUGUS). Japanese Circulation Journal. 43(6). 547–569. 6 indexed citations
9.
Weber, K. T., Joseph S. Janicki, Russell C. Reeves, Lloyd L. Hefner, & T.Joseph Reeves. (1974). Determinants of stroke volume in the isolated canine heart.. Journal of Applied Physiology. 37(5). 742–747. 40 indexed citations
10.
Mitchell, Jere H., Lloyd L. Hefner, & R. GRIER MONROE. (1972). Performance of the left ventricle. The American Journal of Medicine. 53(4). 481–494. 11 indexed citations
11.
Bowen, Thomas, et al.. (1969). Force-Velocity Relationship of Cat Cardiac Muscle, Studied by Isotonic and Quick-Release Techniques. Circulation Research. 24(6). 821–833. 67 indexed citations
12.
Reeves, T.Joseph & Lloyd L. Hefner. (1962). Isometric contraction and contractility in the intact mammalian ventricle. American Heart Journal. 64(4). 525–538. 20 indexed citations
13.
Hefner, Lloyd L., et al.. (1962). Relation Between Mural Force and Pressure in the Left Ventricle of the Dog. Circulation Research. 11(4). 654–663. 76 indexed citations
14.
Hefner, Lloyd L., H. Cecil Coghlan, William B. Jones, & T.Joseph Reeves. (1961). Distensibility of the dog left ventricle. American Journal of Physiology-Legacy Content. 201(1). 97–101. 64 indexed citations
15.
Reeves, T.Joseph, Lloyd L. Hefner, William B. Jones, et al.. (1960). The hemodynamic determinants of the rate of change in pressure in the left ventricle during isometric contraction. American Heart Journal. 60(5). 745–761. 158 indexed citations
16.
Jones, William B., Lloyd L. Hefner, William H. Bancroft, & Willem Klip. (1959). VELOCITY OF BLOOD FLOW AND STROKE VOLUME OBTAINED FROM THE PRESSURE PULSE *. Journal of Clinical Investigation. 38(11). 2087–2090. 19 indexed citations
17.
Harrison, Tinsley R., et al.. (1958). Movements and Forces of the Human Heart. Circulation. 18(1). 82–91. 14 indexed citations
18.
Reeves, T.Joseph, William B. Jones, & Lloyd L. Hefner. (1957). Design of an Ultra Low Frequency Force Ballistocardiograph on the Principle of the Horizontal Pendulum. Circulation. 16(1). 36–42. 13 indexed citations
19.
Reeves, T.Joseph, et al.. (1957). Wide Frequency Range Force Ballistocardiogram. Circulation. 16(1). 43–53. 30 indexed citations
20.
Hefner, Lloyd L., Ben J. Friedman, T.Joseph Reeves, E.E. Eddleman, & Tinsley R. Harrison. (1957). Symposium on Coronary Dilator Drugs. Circulation. 15(1). 111–117. 8 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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