Robert Hopfer

439 total citations
14 papers, 364 citations indexed

About

Robert Hopfer is a scholar working on Epidemiology, Organic Chemistry and Molecular Biology. According to data from OpenAlex, Robert Hopfer has authored 14 papers receiving a total of 364 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Epidemiology, 3 papers in Organic Chemistry and 3 papers in Molecular Biology. Recurrent topics in Robert Hopfer's work include Pneumonia and Respiratory Infections (6 papers), Respiratory viral infections research (4 papers) and Bacterial Infections and Vaccines (3 papers). Robert Hopfer is often cited by papers focused on Pneumonia and Respiratory Infections (6 papers), Respiratory viral infections research (4 papers) and Bacterial Infections and Vaccines (3 papers). Robert Hopfer collaborates with scholars based in United States, Canada and France. Robert Hopfer's co-authors include Xiaohua Sheng, Sanjay Gurunathan, Monica Bologa, Lee-Jah Chang, W. Abdullah Brooks, Jack A. Alhadeff, Branda Hu, Garvin S. Bixler, Tao Yuan and Victor Hou and has published in prestigious journals such as Analytical Biochemistry, Biochemical Journal and Journal of Clinical Microbiology.

In The Last Decade

Robert Hopfer

14 papers receiving 357 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Robert Hopfer United States 10 266 150 80 49 21 14 364
Sónia André France 10 41 0.2× 128 0.9× 122 1.5× 59 1.2× 6 0.3× 20 256
Chivonne Moodley United States 9 174 0.7× 28 0.2× 86 1.1× 10 0.2× 8 0.4× 14 343
Shoko Wakabayashi United States 8 150 0.6× 87 0.6× 98 1.2× 8 0.2× 13 289
Shuku Kubo Japan 6 360 1.4× 13 0.1× 138 1.7× 20 0.4× 2 0.1× 9 429
Stefanie Schindler Germany 6 44 0.2× 53 0.4× 55 0.7× 27 0.6× 1 0.0× 6 259
D. Lilli Italy 10 118 0.4× 22 0.1× 58 0.7× 15 0.3× 4 0.2× 19 439
Neill White United States 6 71 0.3× 12 0.1× 102 1.3× 30 0.6× 10 0.5× 6 216
Nicoleta Anghel Switzerland 13 108 0.4× 9 0.1× 61 0.8× 18 0.4× 10 0.5× 27 314
Yan-Peng Zheng China 11 147 0.6× 7 0.0× 79 1.0× 30 0.6× 7 0.3× 28 349
Ana I. Martínez United States 8 54 0.2× 25 0.2× 100 1.3× 11 0.2× 7 0.3× 12 379

Countries citing papers authored by Robert Hopfer

Since Specialization
Citations

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

Fields of papers citing papers by Robert Hopfer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Robert Hopfer

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

All Works

14 of 14 papers shown
1.
Ochs, Martina M., Anthony Sheung, Lucian Visan, et al.. (2016). A bivalent pneumococcal histidine triad protein D-choline-binding protein A vaccine elicits functional antibodies that passively protect mice from Streptococcus pneumoniae challenge. Human Vaccines & Immunotherapeutics. 12(11). 2946–2952. 11 indexed citations
2.
Brookes, Roger H., Robert Hopfer, Sanjay Gurunathan, et al.. (2015). Passive protection of mice againstStreptococcus pneumoniaechallenge by naturally occurring and vaccine-induced human anti-PhtD antibodies. Human Vaccines & Immunotherapeutics. 11(7). 1836–1839. 14 indexed citations
3.
Brooks, W. Abdullah, Lee-Jah Chang, Xiaohua Sheng, & Robert Hopfer. (2015). Safety and immunogenicity of a trivalent recombinant PcpA, PhtD, and PlyD1 pneumococcal protein vaccine in adults, toddlers, and infants: A phase I randomized controlled study. Vaccine. 33(36). 4610–4617. 52 indexed citations
4.
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6.
Sheung, Anthony, Mei San Tang, Belma Ljutic, et al.. (2012). Neutralizing Antibodies Elicited by a Novel Detoxified Pneumolysin Derivative, PlyD1, Provide Protection against Both Pneumococcal Infection and Lung Injury. Infection and Immunity. 80(6). 2212–2220. 55 indexed citations
7.
Shukla, Abhinav A., et al.. (1998). Purification of an Antigenic Vaccine Protein by Selective Displacement Chromatography. Biotechnology Progress. 14(1). 92–101. 27 indexed citations
8.
Gerson, Donald F., et al.. (1998). Transfer of Processes from Development to Manufacturing. Drug Information Journal. 32(1). 19–26. 5 indexed citations
9.
Hopfer, Robert, Steven W. Johnson, Massimo Masserini, Alessandro Giuliani, & Jack A. Alhadeff. (1990). Hydrolysis of fucosyl-GM1 ganglioside by purified pellet-associated human brain and human liver α-l-fucosidases without activator proteins or detergents. Biochemical Journal. 266(2). 491–496. 18 indexed citations
10.
Argade, Sulabha, et al.. (1988). Structural studies on the carbohydrate moieties of human liver α-l-fucosidase. Archives of Biochemistry and Biophysics. 266(1). 227–247. 14 indexed citations
11.
Alhadeff, Jack A., et al.. (1985). Serum Neutral α-D-Glucosidase from Patients with Cystic Fibrosis and Chronic Pulmonary Disease. Pediatric Research. 19(2). 171–174. 2 indexed citations
12.
Hopfer, Robert & Jack A. Alhadeff. (1985). Solubilization and characterization of pellet-associated human brain α-L-fucosidase activity. Biochemical Journal. 229(3). 679–685. 4 indexed citations
13.
Merkel, Joseph R., et al.. (1982). Purification and some properties of sn-glycerol-3-phosphate dehydrogenase from Saccharomyces cerevisiae. Analytical Biochemistry. 122(1). 180–185. 11 indexed citations
14.
Hopfer, Robert, K. Mills, & D Gröschel. (1979). Improved blood culture medium for radiometric detection of yeasts. Journal of Clinical Microbiology. 9(3). 448–449. 3 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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