Lars J. Hem

933 total citations
13 papers, 723 citations indexed

About

Lars J. Hem is a scholar working on Pollution, Industrial and Manufacturing Engineering and Health, Toxicology and Mutagenesis. According to data from OpenAlex, Lars J. Hem has authored 13 papers receiving a total of 723 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Pollution, 4 papers in Industrial and Manufacturing Engineering and 4 papers in Health, Toxicology and Mutagenesis. Recurrent topics in Lars J. Hem's work include Wastewater Treatment and Nitrogen Removal (7 papers), Water Treatment and Disinfection (4 papers) and Smart Materials for Construction (2 papers). Lars J. Hem is often cited by papers focused on Wastewater Treatment and Nitrogen Removal (7 papers), Water Treatment and Disinfection (4 papers) and Smart Materials for Construction (2 papers). Lars J. Hem collaborates with scholars based in Norway, Iran and United Kingdom. Lars J. Hem's co-authors include Hallvard Ødegaard, Bjørn Rusten, Thomas Hartnik, Gijs D. Breedveld, Magnus Sparrevik, Harsha Ratnaweera, Xiaodong Wang, Xuejun Bi, Kourosh Behzadian and Evangelos Rozos and has published in prestigious journals such as Water Research, Environment International and Journal of Environmental Management.

In The Last Decade

Lars J. Hem

13 papers receiving 643 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Lars J. Hem Norway	10	494	289	255	239	87	13	723
Theoni Maria Massara United Kingdom	7	430 0.9×	242 0.8×	256 1.0×	174 0.7×	160 1.8×	7	676
Bengt Hultman Sweden	14	447 0.9×	323 1.1×	209 0.8×	180 0.8×	102 1.2×	57	709
Silvana Velten Switzerland	5	392 0.8×	215 0.7×	291 1.1×	414 1.7×	109 1.3×	5	781
Krzysztof Czerwionka Poland	18	509 1.0×	371 1.3×	234 0.9×	174 0.7×	136 1.6×	57	797
Carles Pellicer i Nàcher Denmark	9	759 1.5×	281 1.0×	268 1.1×	275 1.2×	245 2.8×	19	916
Yi Peng China	17	453 0.9×	162 0.6×	146 0.6×	300 1.3×	122 1.4×	54	875
C. Douglas Goldsmith United States	13	232 0.5×	387 1.3×	165 0.6×	158 0.7×	193 2.2×	22	762
Charles Glass United States	5	611 1.2×	218 0.8×	121 0.5×	169 0.7×	230 2.6×	7	817
Chengda He China	15	492 1.0×	219 0.8×	270 1.1×	158 0.7×	144 1.7×	36	761
Yuzuru Kimochi Japan	8	382 0.8×	202 0.7×	108 0.4×	124 0.5×	129 1.5×	17	483

Countries citing papers authored by Lars J. Hem

Since Specialization

Citations

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

Fields of papers citing papers by Lars J. Hem

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Lars J. Hem. 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 Lars J. Hem. The network helps show where Lars J. Hem may publish in the future.

Co-authorship network of co-authors of Lars J. Hem

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

All Works

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13 of 13 papers shown

Wang, Xiaodong, Xuejun Bi, Lars J. Hem, & Harsha Ratnaweera. (2018). Microbial community composition of a multi-stage moving bed biofilm reactor and its interaction with kinetic model parameters estimation. Journal of Environmental Management. 218. 340–347. 32 indexed citations

Behzadian, Kourosh, Zoran Kapelan, G. Venkatesh, et al.. (2014). Urban Water System Metabolism Assessment Using WaterMet2 Model. Procedia Engineering. 70. 113–122. 25 indexed citations

Hem, Lars J., et al.. (2011). ROS Maridalsvannet – Oset Forurensningsanalyse av Maridalsvannet med nedbørfelt Hygieniske barrierer ved Oset vannbehandlingsanlegg Beskyttelsestiltak i nedbørfeltet. BIBSYS Brage (BIBSYS (Norway)). 1 indexed citations

Hem, Lars J., et al.. (2003). Photochemical Degradation of Benzotriazole. Journal of Environmental Science and Health Part A. 38(3). 471–481. 51 indexed citations

Breedveld, Gijs D., et al.. (2003). Persistence of the De-Icing Additive Benzotriazole at an Abandoned Airport. Water Air and Soil Pollution Focus. 3(3). 91–101. 87 indexed citations

Hem, Lars J., et al.. (2001). Water treatment to reduce internal corrosion in the drinking water distribution system in Oslo. Water Science & Technology Water Supply. 1(3). 91–96. 6 indexed citations

Hem, Lars J.. (2001). Assimilable organic carbon in molecular weight fractions of natural organic matter. Water Research. 35(4). 1106–1110. 92 indexed citations

Hem, Lars J., et al.. (2000). DEGRADATION AND TOXICITY OF ADDITIVES TO AIRCRAFT DE-ICING FLUIDS; THE EFFECT OF DISCHARGE OF SUCH FLUIDS TO MUNICIPAL WASTEWATER TREATMENT PLANTS. Proceedings of the Water Environment Federation. 2000(5). 419–433. 12 indexed citations

Hem, Lars J.. (1999). Isolation of natural organic matter ? The influence on the assimilable organic carbon. Environment International. 25(2-3). 367–371. 10 indexed citations

10.

Rusten, Bjørn, Lars J. Hem, & Hallvard Ødegaard. (1995). Nitrogen removal from dilute wastewater in cold climate using moving‐bed biofilm reactors. Water Environment Research. 67(1). 65–74. 71 indexed citations

11.

Rusten, Bjørn, Lars J. Hem, & Hallvard Ødegaard. (1995). Nitrification of municipal wastewater in moving‐bed biofilm reactors. Water Environment Research. 67(1). 75–86. 135 indexed citations

12.

Hem, Lars J.. (1994). Effect of volatile fatty acids and trimethylamine of nitrification in activated sludge. Medical Entomology and Zoology. 28(6). 1425–1433. 9 indexed citations

13.

Hem, Lars J., Bjørn Rusten, & Hallvard Ødegaard. (1994). Nitrification in a moving bed biofilm reactor. Water Research. 28(6). 1425–1433. 192 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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