Per Halfdan Nielsen

238 total papers · 4.8k total citations
213 papers, 3.6k citations indexed

About

Per Halfdan Nielsen is a scholar working on Organic Chemistry, Spectroscopy and Molecular Biology. According to data from OpenAlex, Per Halfdan Nielsen has authored 213 papers receiving a total of 3.6k indexed citations (citations by other indexed papers that have themselves been cited), including 105 papers in Organic Chemistry, 32 papers in Spectroscopy and 29 papers in Molecular Biology. Recurrent topics in Per Halfdan Nielsen’s work include Synthesis and Characterization of Heterocyclic Compounds (23 papers), Inorganic and Organometallic Chemistry (21 papers) and Synthesis and Reactivity of Sulfur-Containing Compounds (18 papers). Per Halfdan Nielsen is often cited by papers focused on Synthesis and Characterization of Heterocyclic Compounds (23 papers), Inorganic and Organometallic Chemistry (21 papers) and Synthesis and Reactivity of Sulfur-Containing Compounds (18 papers). Per Halfdan Nielsen collaborates with scholars based in Denmark, Mexico and Venezuela. Per Halfdan Nielsen's co-authors include Charles Larsen, Berit Olofsson, Kai Jensen, Bo Lamm, Benny Samuelsson, Alf A. Lindberg, Olof Vesterberg, Uffe Anthoni, Robert E. Carter and Erling Sunde and has published in prestigious journals such as Analytical Chemistry, The Journal of Physical Chemistry and Journal of Agricultural and Food Chemistry.

In The Last Decade

Co-authorship network of co-authors of Per Halfdan Nielsen

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

Per Halfdan Nielsen

204 papers receiving 3.2k citations

Fields of papers citing papers by Per Halfdan Nielsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Per Halfdan Nielsen. 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 Per Halfdan Nielsen. The network helps show where Per Halfdan Nielsen may publish in the future.

Countries citing papers authored by Per Halfdan Nielsen

Since Specialization
Citations

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

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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