H. Engelhardt

1.1k total citations
28 papers, 741 citations indexed

About

H. Engelhardt is a scholar working on Agronomy and Crop Science, Immunology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, H. Engelhardt has authored 28 papers receiving a total of 741 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Agronomy and Crop Science, 10 papers in Immunology and 7 papers in Public Health, Environmental and Occupational Health. Recurrent topics in H. Engelhardt's work include Reproductive Physiology in Livestock (13 papers), Reproductive Biology and Fertility (7 papers) and Immunodeficiency and Autoimmune Disorders (5 papers). H. Engelhardt is often cited by papers focused on Reproductive Physiology in Livestock (13 papers), Reproductive Biology and Fertility (7 papers) and Immunodeficiency and Autoimmune Disorders (5 papers). H. Engelhardt collaborates with scholars based in Canada, United Kingdom and United States. H. Engelhardt's co-authors include Gordon J. King, B. Anne Croy, Herbert Lochs, F Theissig, Stefan Koch, Yvonne Dörffel, Vera Loening‐Baucke, Stig Bengmark, Alexander Swidsinski and David T. Armstrong and has published in prestigious journals such as Environmental Science & Technology, Gut and Endocrinology.

In The Last Decade

H. Engelhardt

28 papers receiving 726 citations

Peers

H. Engelhardt
Finnie A. Murray United States
Ercan Kurar Türkiye
J Roth United States
W.L. Ragland United States
H. Engelhardt
Citations per year, relative to H. Engelhardt H. Engelhardt (= 1×) peers Angelika Bondzio

Countries citing papers authored by H. Engelhardt

Since Specialization
Citations

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

Fields of papers citing papers by H. Engelhardt

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. Engelhardt. 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 H. Engelhardt. The network helps show where H. Engelhardt may publish in the future.

Co-authorship network of co-authors of H. Engelhardt

This figure shows the co-authorship network connecting the top 25 collaborators of H. Engelhardt. A scholar is included among the top collaborators of H. Engelhardt 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 H. Engelhardt. H. Engelhardt 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.
Swidsinski, Alexander, Vera Loening‐Baucke, F Theissig, et al.. (2006). Comparative study of the intestinal mucus barrier in normal and inflamed colon. Gut. 56(3). 343–350. 286 indexed citations
2.
Engelhardt, H., B. Anne Croy, & Gordon J. King. (2002). Evaluation of Natural Killer Cell Recruitment to Embryonic Attachment Sites During Early Porcine Pregnancy1. Biology of Reproduction. 66(4). 1185–1192. 32 indexed citations
3.
Engelhardt, H., B. Anne Croy, & Gordon J. King. (2002). Conceptus Influences the Distribution of Uterine Leukocytes During Early Porcine Pregnancy1. Biology of Reproduction. 66(6). 1875–1880. 36 indexed citations
4.
Campbell, Bruce, et al.. (1999). Direct effects of ovine follicular fluid on ovarian steroid secretion and expression of markers of cellular differentiation in sheep. Reproduction. 117(2). 259–269. 11 indexed citations
5.
Walt, David R., Todd A. Dickinson, Joel White, et al.. (1998). Optical sensor arrays for odor recognition. Biosensors and Bioelectronics. 13(6). 697–699. 42 indexed citations
6.
Engelhardt, H., et al.. (1997). Uterine natural killer cells in species with epitheliochorial placentation.. PubMed. 15(1). 53–69. 20 indexed citations
7.
Chapeau, Christine, H. Engelhardt, Gordon J. King, & R. J. Etches. (1996). Alkaline Phosphatase Activity in the Theca of Ovarian Follicles of the Hen Throughout Follicular Development. Poultry Science. 75(12). 1536–1545. 4 indexed citations
8.
Engelhardt, H., Linda Harkness, G. B. Thomas, et al.. (1995). Expression of inhibin α- and βA-subunit mRNA and protein in the fetal sheep ovary throughout gestation. Molecular and Cellular Endocrinology. 107(2). 141–147. 12 indexed citations
9.
Thomas, G., Emma J. Davidson, H. Engelhardt, et al.. (1995). Expression of mRNA and immunocytochemical localization of inhibin α- and inhibin βA-subunits in the fetal sheep testis. Journal of Endocrinology. 145(1). 35–42. 18 indexed citations
10.
Tekpetey, F., H. Engelhardt, & David T. Armstrong. (1993). Differential Modulation of Porcine Theca, Granulosa, and Luteal Cell Steroidogenesis in Vitro by Tumor Necrosis Factor1. Biology of Reproduction. 48(4). 936–943. 24 indexed citations
11.
Engelhardt, H., K. B. Smith, Alan S. McNeilly, & David T. Baird. (1993). Expression of Messenger Ribonucleic Acid for Inhibin Subunits and Ovarian Secretion of Inhibin and Estradiol at Various Stages of the Sheep Estrous Cycle1. Biology of Reproduction. 49(2). 281–294. 38 indexed citations
12.
Engelhardt, H., F. Tekpetey, Robert E. Gore‐Langton, & David T. Armstrong. (1992). Regulation of steroid production in cultured porcine thecal cells by transforming growth factor-β. Molecular and Cellular Endocrinology. 85(1-2). 117–126. 18 indexed citations
13.
Engelhardt, H., Robert E. Gore‐Langton, & David T. Armstrong. (1991). Luteinization of porcine thecal cells in vitro. Molecular and Cellular Endocrinology. 75(3). 237–245. 18 indexed citations
14.
Engelhardt, H., J.S. Walton, Richard B. Miller, & G. J. King. (1989). Estradiol-Induced Blockade of Ovulation in the Cow: Effects on Luteinizing Hormone Release and Follicular Fluid Steroids1. Biology of Reproduction. 40(6). 1287–1297. 24 indexed citations
15.
Engelhardt, H., Robert E. Gore‐Langton, & David T. Armstrong. (1989). Mevinolin (Lovastatin) Inhibits Androstenedione Production by Porcine Ovarian Theca Cells at the Level of the 17α-Hydroxylase:C-17,20-Lyase Complex*†. Endocrinology. 124(5). 2297–2304. 17 indexed citations
16.
Engelhardt, H., et al.. (1979). BCG vaccination of neonates, infants, schoolchildren and adolescents. Part I: Dose finding studies with BCG strain 1331 Copenhagen.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 43. 127–32. 5 indexed citations
17.
Hennessen, W., et al.. (1978). [Investigations carried out to ascertain the dose-effect relationship of a BCG vaccine, strain 1331 Copenhagen, in neonates and young infants (author's transl)].. PubMed. 166(2-3). 250–63. 3 indexed citations
18.
Hennessen, W., et al.. (1977). Observations on a BCG vaccine causing adverse reactions in newborns. Journal of Biological Standardization. 5(2). 139–146. 4 indexed citations
19.
Corey, G. Ralph, et al.. (1976). Field trials with killed oral typhoid vaccines.. PubMed. 33. 80–4. 6 indexed citations
20.
Engelhardt, H., et al.. (1974). Stability of DTP vaccine. Journal of Biological Standardization. 2(3). 183–187. 4 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.

Explore authors with similar magnitude of impact

Rankless by CCL
2026