J. O'Brien

1.6k total citations
36 papers, 1.1k citations indexed

About

J. O'Brien is a scholar working on Parasitology, Infectious Diseases and Small Animals. According to data from OpenAlex, J. O'Brien has authored 36 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Parasitology, 12 papers in Infectious Diseases and 8 papers in Small Animals. Recurrent topics in J. O'Brien's work include Leptospirosis research and findings (10 papers), Microbial infections and disease research (8 papers) and Tuberculosis Research and Epidemiology (6 papers). J. O'Brien is often cited by papers focused on Leptospirosis research and findings (10 papers), Microbial infections and disease research (8 papers) and Tuberculosis Research and Epidemiology (6 papers). J. O'Brien collaborates with scholars based in United Kingdom and United States. J. O'Brien's co-authors include William Ellis, J. Hanna, S.D. Neill, S. Neill, James A. Cassells, R.M. McCracken, Robert J. McCracken, D.G. Bryson, J. Montgomery and K. J. McCracken and has published in prestigious journals such as Investigative Ophthalmology & Visual Science, Veterinary Microbiology and Journal of Parasitology.

In The Last Decade

J. O'Brien

36 papers receiving 1.0k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J. O'Brien United Kingdom	20	504	479	273	271	267	36	1.1k
S. Neill United Kingdom	21	647 1.3×	287 0.6×	216 0.8×	311 1.1×	523 2.0×	27	1.3k
J. Hanna United Kingdom	18	629 1.2×	256 0.5×	176 0.6×	202 0.7×	504 1.9×	28	1.1k
C A Bolin United States	20	411 0.8×	624 1.3×	332 1.2×	417 1.5×	148 0.6×	38	1.5k
R.B. Marshall New Zealand	22	404 0.8×	911 1.9×	358 1.3×	99 0.4×	164 0.6×	63	1.3k
D.P. Mackie United Kingdom	25	962 1.9×	189 0.4×	189 0.7×	154 0.6×	568 2.1×	68	1.9k
Silvia Tagliabue Italy	18	350 0.7×	349 0.7×	158 0.6×	162 0.6×	204 0.8×	40	828
C.R. Wilks Australia	22	414 0.8×	313 0.7×	141 0.5×	38 0.1×	649 2.4×	82	1.4k
Vivi Bille‐Hansen Denmark	23	745 1.5×	345 0.7×	144 0.5×	73 0.3×	376 1.4×	53	1.6k
Anne Mayer‐Scholl Germany	21	560 1.1×	614 1.3×	259 0.9×	134 0.5×	165 0.6×	80	1.3k
G. J. Eamens Australia	23	236 0.5×	186 0.4×	265 1.0×	65 0.2×	445 1.7×	50	1.3k

Countries citing papers authored by J. O'Brien

Since Specialization

Citations

This map shows the geographic impact of J. 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 J. 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 J. O'Brien more than expected).

Fields of papers citing papers by J. O'Brien

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. O'Brien

This figure shows the co-authorship network connecting the top 25 collaborators of J. O'Brien. A scholar is included among the top collaborators of J. 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 J. O'Brien. J. 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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20 of 20 papers shown

Massey, S. C., et al.. (2008). Dopamine D1-Receptor Mediated Modulation of Connexin36 Phosphorylation in AII Amacrine Cells. Investigative Ophthalmology & Visual Science. 49(13). 1515–1515. 3 indexed citations

Stromdahl, Ellen Y., et al.. (2000). <I>Ehrlichia chaffeensis</I> (Rickettsiales: Ehrlichieae) Infection in <I>Amblyomma americanum</I> (Acari: Ixodidae) at Aberdeen Proving Ground, Maryland. Journal of Medical Entomology. 37(3). 349–356. 26 indexed citations

Hanna, J., S.D. Neill, & J. O'Brien. (1992). ELISA tests for antibodies in experimental bovine tuberculosis. Veterinary Microbiology. 31(2-3). 243–249. 32 indexed citations

Neill, S.D., J. O'Brien, & J. Hanna. (1991). A mathematical model for Mycobacterium bovis excretion from tuberculous cattle. Veterinary Microbiology. 28(1). 103–109. 47 indexed citations

Kelly, Denise, J. O'Brien, & K. J. McCracken. (1990). Effect of creep feeding on the incidence, duration and severity of post-weaning diarrhoea in pigs. Research in Veterinary Science. 49(2). 223–228. 51 indexed citations

Neill, S.D., J. Hanna, J. O'Brien, & R.M. McCracken. (1989). Transmission of tuberculosis from experimentally infected cattle to in-contact calves. Veterinary Record. 124(11). 269–271. 60 indexed citations

McIlroy, S. G., Robert J. McCracken, S. Neill, & J. O'Brien. (1989). Control, prevention and eradication of Salmonella enteritidis infection in broiler and broiler breeder flocks. Veterinary Record. 125(22). 545–548. 43 indexed citations

Neill, S.D., J. Hanna, J. O'Brien, & R.M. McCracken. (1988). Excretion of Mycobacterium bovis by experimentally infected cattle. Veterinary Record. 123(13). 340–343. 89 indexed citations

Neill, S., J. O'Brien, & Robert J. McCracken. (1988). Mycobacterium bovis in the anterior respiratory tracts in the heads of tuberculin-reacting cattle. Veterinary Record. 122(8). 184–186. 36 indexed citations

10.

O'Brien, J.. (1986). Inherited parakeratosis in two Friesian calves. Veterinary Record. 119(9). 206–207. 3 indexed citations

11.

Ellis, William, J. O'Brien, S.D. Neill, & D.G. Bryson. (1986). Bovine leptospirosis: Experimental serovar hardjo infection. Veterinary Microbiology. 11(3). 293–299. 31 indexed citations

12.

Neill, S.D., J Campbell, & J. O'Brien. (1985). Egg penetration ByCampylobacter Jejuni. Avian Pathology. 14(3). 313–320. 41 indexed citations

13.

Ellis, William, D.G. Bryson, J. O'Brien, & S.D. Neill. (1983). Leptospiral infection in aborted equine foetuses. Equine Veterinary Journal. 15(4). 321–324. 50 indexed citations

14.

Ellis, William, J. O'Brien, James A. Cassells, & J. Montgomery. (1983). Leptospiral infection in horses in Northern Ireland: Serological and microbiological findings. Equine Veterinary Journal. 15(4). 317–320. 76 indexed citations

15.

Ellis, William, J. O'Brien, S. Neill, & J. Hanna. (1982). Bovine leptospirosis: serological findings in aborting cows. Veterinary Record. 110(8). 178–180. 59 indexed citations

16.

Logan, E., et al.. (1981). Immunoglobulins in abomasal fluids of aborted and unaborted bovine fetuses.. PubMed. 31(2). 161–3. 3 indexed citations

17.

Ellis, William, E. Logan, & J. O'Brien. (1978). Serum immunoglobulins in aborted and non-aborted bovine foetuses.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 33(1). 136–41. 17 indexed citations

18.

Ellis, William, S. Neill, J. O'Brien, & J. Hanna. (1978). Isolation of spirillum-like organisms from pig fetuses. Veterinary Record. 102(5). 106–106. 56 indexed citations

19.

McCaughey, W.J., J. Hanna, & J. O'Brien. (1973). A Comparison of Three Laboratory Tests for Pregnancy Diagnosis in the Mare. Equine Veterinary Journal. 5(2). 94–95. 4 indexed citations

20.

O'Brien, J.. (1972). Observations on Debility and Extensive Hair Loss in a Filly. Equine Veterinary Journal. 4(4). 227–229. 1 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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