Regina C. O'Brien

567 total citations
15 papers, 451 citations indexed

About

Regina C. O'Brien is a scholar working on Ecology, Evolution, Behavior and Systematics, Ecology and Molecular Biology. According to data from OpenAlex, Regina C. O'Brien has authored 15 papers receiving a total of 451 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Ecology, Evolution, Behavior and Systematics, 5 papers in Ecology and 3 papers in Molecular Biology. Recurrent topics in Regina C. O'Brien's work include Bat Biology and Ecology Studies (4 papers), Physiological and biochemical adaptations (3 papers) and Animal Ecology and Behavior Studies (2 papers). Regina C. O'Brien is often cited by papers focused on Bat Biology and Ecology Studies (4 papers), Physiological and biochemical adaptations (3 papers) and Animal Ecology and Behavior Studies (2 papers). Regina C. O'Brien collaborates with scholars based in United States and Israel. Regina C. O'Brien's co-authors include C. P. Lyman, Charles P. Lyman, Samuel P. Hicks, Aubrey Gorbman, S. James Adelstein, Leon Weiss, J. Wahrman, James E. Simon, Beverly J. Tepper and Lidia Sambucetti and has published in prestigious journals such as Science, The Journal of Physiology and Journal of Histochemistry & Cytochemistry.

In The Last Decade

Regina C. O'Brien

15 papers receiving 406 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Regina C. O'Brien United States	11	153	123	111	80	70	15	451
C. P. Lyman United States	13	191 1.2×	188 1.5×	199 1.8×	71 0.9×	71 1.0×	17	545
Rocco V. Carsia United States	18	139 0.9×	115 0.9×	157 1.4×	117 1.5×	63 0.9×	51	862
John S. Willis United States	9	400 2.6×	266 2.2×	311 2.8×	139 1.7×	104 1.5×	20	706
Roy F. Burlington United States	12	146 1.0×	188 1.5×	139 1.3×	76 0.9×	43 0.6×	29	354
Orin B. Mock United States	9	72 0.5×	76 0.6×	82 0.7×	118 1.5×	15 0.2×	16	505
Mary Anne Brock United States	10	38 0.2×	147 1.2×	38 0.3×	111 1.4×	132 1.9×	22	406
Edward B. Pivorun United States	12	164 1.1×	108 0.9×	142 1.3×	59 0.7×	102 1.5×	29	440
H. Weber United States	12	61 0.4×	90 0.7×	69 0.6×	49 0.6×	35 0.5×	26	392
Albert R. Dawe United States	11	337 2.2×	144 1.2×	264 2.4×	55 0.7×	69 1.0×	15	552
Eric T. Pengelley United States	9	372 2.4×	114 0.9×	266 2.4×	51 0.6×	169 2.4×	13	509

Countries citing papers authored by Regina C. O'Brien

Since Specialization

Citations

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

Fields of papers citing papers by Regina C. O'Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Regina C. O'Brien. 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 Regina C. O'Brien. The network helps show where Regina C. O'Brien may publish in the future.

Co-authorship network of co-authors of Regina C. O'Brien

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

All Works

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15 of 15 papers shown

O'Brien, Regina C., et al.. (2025). Relationship between sensory perceptions and volatile and phenolic compounds of fresh basil ( Ocimum basilicum L.) evaluated by multivariate statistics. Journal of Food Science. 90(4). e70194–e70194. 1 indexed citations

O'Brien, Regina C., James E. Simon, & Beverly J. Tepper. (2021). How do trained panelists characterize baby leafy greens? A comparison of descriptive analysis and Napping. Journal of Food Science. 87(1). 396–414. 6 indexed citations

Lyman, Charles P. & Regina C. O'Brien. (1988). A pharmacological study of hibernation in rodents. General Pharmacology The Vascular System. 19(4). 565–571. 11 indexed citations

Lyman, Charles P., et al.. (1981). Hibernation and Longevity in the Turkish Hamster Mesocricetus brandti. Science. 212(4495). 668–670. 130 indexed citations

O'Brien, Regina C., et al.. (1980). Spectral characteristics of human leukocytes and their relevance to automated cell identification. III. Eosinophils, neutrophils and lymphocytes.. PubMed. 23(3). 231–6. 2 indexed citations

O'Brien, Regina C., et al.. (1970). AN AUTOMATIC METHOD FOR VIABILITY ASSAY OF CULTURED CELLS. Journal of Histochemistry & Cytochemistry. 18(8). 581–589. 16 indexed citations

Adelstein, S. James, C. P. Lyman, & Regina C. O'Brien. (1964). Variations in the incorporation of thymidine into the DNA of some rodent species. Comparative Biochemistry and Physiology. 12(2). 223–231. 21 indexed citations

Lyman, C. P. & Regina C. O'Brien. (1963). Autonomic control of circulation during the hibernating cycle in ground squirrels. The Journal of Physiology. 168(3). 477–499. 86 indexed citations

Lyman, Charles P. & Regina C. O'Brien. (1961). Circulatory Changes in the 13-Lined Ground Squirrel during the Hibernating Cycle. PubMed. 60(24). 1–18. 13 indexed citations

10.

Lyman, C. P. & Regina C. O'Brien. (1960). Circulatory changes in the thirteen-lined ground squirrel during the hibernation cycle, by Charles P. Lyman and Regina C. O'Brien. Biodiversity Heritage Library (Smithsonian Institution). 20 indexed citations

11.

Lyman, Charles P., et al.. (1957). The effect of hibernation on the replacement of blood in the golden hamster. Journal of Experimental Zoology. 136(3). 471–485. 21 indexed citations

12.

Wahrman, J. & Regina C. O'Brien. (1956). Nuclear content of DNA in chromosomal polymorphism in the genus Ameles (Orthoptera: Mantoidea). Journal of Morphology. 99(2). 259–270. 8 indexed citations

13.

O'Brien, Regina C.. (1956). Deoxyribose nucleic acid in a haploid-diploid species (Steatococcus tuberculatus Morrison). Chromosoma. 8(1). 229–259. 23 indexed citations

14.

Hicks, Samuel P., et al.. (1954). The effects of ionizing radiation, certain hormones, and radiomimetic drugs on the developing nervous system. Journal of Cellular and Comparative Physiology. 43(S1). 151–178. 55 indexed citations

15.

Gorbman, Aubrey, et al.. (1954). Utilization of radioiodine by invertebrates, with special study of several annelida and mollusca. Journal of Experimental Zoology. 127(1). 75–92. 38 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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