Johan Valstar

About

Johan Valstar is a scholar working on Environmental Engineering, Civil and Structural Engineering and Ocean Engineering. According to data from OpenAlex, Johan Valstar has authored 19 papers receiving a total of 500 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Environmental Engineering, 5 papers in Civil and Structural Engineering and 5 papers in Ocean Engineering. Recurrent topics in Johan Valstar’s work include Groundwater flow and contamination studies (17 papers), Reservoir Engineering and Simulation Methods (5 papers) and Soil and Unsaturated Flow (5 papers). Johan Valstar is often cited by papers focused on Groundwater flow and contamination studies (17 papers), Reservoir Engineering and Simulation Methods (5 papers) and Soil and Unsaturated Flow (5 papers). Johan Valstar collaborates with scholars based in Netherlands, Saudi Arabia and United States. Johan Valstar's co-authors include J.T.C. Grotenhuis, H.H.M. Rijnaarts, Pauline van Gaans, Ibrahim Hoteit, Mohamad El Gharamti, Ingo Leusbrock, Arnold Heemink, Niels Hartog, Vincent Post and Boris M. van Breukelen and has published in prestigious journals such as Water Resources Research, Applied Energy and Applied Microbiology and Biotechnology.

In The Last Decade

Co-authorship network of co-authors of Johan Valstar

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

Johan Valstar

18 papers receiving 454 citations

Fields of papers citing papers by Johan Valstar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Johan Valstar

Since Specialization

Citations

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