Klaus Niemelä

1.4k total citations
67 papers, 1.1k citations indexed

About

Klaus Niemelä is a scholar working on Biomedical Engineering, Biomaterials and Food Science. According to data from OpenAlex, Klaus Niemelä has authored 67 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Biomedical Engineering, 14 papers in Biomaterials and 14 papers in Food Science. Recurrent topics in Klaus Niemelä's work include Lignin and Wood Chemistry (23 papers), Biofuel production and bioconversion (21 papers) and Advanced Cellulose Research Studies (14 papers). Klaus Niemelä is often cited by papers focused on Lignin and Wood Chemistry (23 papers), Biofuel production and bioconversion (21 papers) and Advanced Cellulose Research Studies (14 papers). Klaus Niemelä collaborates with scholars based in Finland, United States and Estonia. Klaus Niemelä's co-authors include Eero Sjöström, Raimo Alén, Johanna Büchert, Herbert Sixta, Kaisa Poutanen, Sari Rautiainen, Joanne Loh, Greg Power, Jürgen Püls and Tarja Tamminen and has published in prestigious journals such as Journal of Cleaner Production, Journal of Agricultural and Food Chemistry and Green Chemistry.

In The Last Decade

Klaus Niemelä

63 papers receiving 968 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Klaus Niemelä Finland 22 698 236 214 159 126 67 1.1k
Sandra Rivas Spain 22 915 1.3× 198 0.8× 144 0.7× 131 0.8× 130 1.0× 43 1.3k
Débora Nabarlatz Colombia 13 585 0.8× 146 0.6× 132 0.6× 89 0.6× 49 0.4× 23 1.1k
Nur Izyan Wan Azelee Malaysia 21 405 0.6× 208 0.9× 103 0.5× 147 0.9× 94 0.7× 73 1.2k
Wen Hui Teoh Malaysia 17 875 1.3× 280 1.2× 265 1.2× 388 2.4× 323 2.6× 30 1.6k
Harshad Brahmbhatt India 19 290 0.4× 157 0.7× 183 0.9× 222 1.4× 70 0.6× 38 1.1k
A. M. Mimi Sakinah Malaysia 18 610 0.9× 443 1.9× 100 0.5× 189 1.2× 178 1.4× 59 1.2k
Eliseo Cristiani‐Urbina Mexico 28 416 0.6× 248 1.1× 60 0.3× 186 1.2× 112 0.9× 103 1.9k
Carla Brazinha Portugal 21 279 0.4× 209 0.9× 130 0.6× 132 0.8× 209 1.7× 67 1.2k
M.K. Gowthaman India 19 433 0.6× 504 2.1× 216 1.0× 68 0.4× 84 0.7× 34 1.0k
Tonghui Xie China 22 317 0.5× 219 0.9× 97 0.5× 192 1.2× 185 1.5× 47 1.3k

Countries citing papers authored by Klaus Niemelä

Since Specialization
Citations

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

Fields of papers citing papers by Klaus Niemelä

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Klaus Niemelä

This figure shows the co-authorship network connecting the top 25 collaborators of Klaus Niemelä. A scholar is included among the top collaborators of Klaus Niemelä 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 Klaus Niemelä. Klaus Niemelä 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.
Tamminen, Tarja, et al.. (2025). Comprehensive lignin balance and new insights into softwood lignosulphonates from neutral sulphite pulping. Industrial Crops and Products. 226. 120734–120734.
2.
Widsten, Petri, et al.. (2023). Tannin-Based Microbicidal Coatings for Hospital Privacy Curtains. Journal of Functional Biomaterials. 14(4). 187–187. 3 indexed citations
3.
Rautiainen, Sari, et al.. (2020). A unique pathway to platform chemicals: aldaric acids as stable intermediates for the synthesis of furandicarboxylic acid esters. Green Chemistry. 22(23). 8271–8277. 33 indexed citations
4.
Popper, Rafael, et al.. (2020). The Future of Forest-based Bioeconomy Areas:Strategic openings in Uruguay and the World by 2050. Research Explorer (The University of Manchester). 3 indexed citations
5.
Hagner, Marleena, et al.. (2018). Performance of Liquids from Slow Pyrolysis and Hydrothermal Carbonization in Plant Protection. Waste and Biomass Valorization. 11(3). 1005–1016. 43 indexed citations
6.
Arasto, Antti, Tiina Koljonen, Eija Alakangas, et al.. (2018). Growth by integrating bioeconomy and low-carbon economy: Scenarios for Finland until 2050. 2 indexed citations
7.
Niemelä, Klaus, et al.. (2018). Biorefining of Scots pine using neutral sodium sulphite pulping: investigation of fibre and spent liquor compositions. Industrial Crops and Products. 129. 135–141. 4 indexed citations
8.
Solala, Iina, et al.. (2016). Lignocellulosic nanofibrils from neutral sulphite pulps. 1 indexed citations
9.
Roos, Göran, Toni Ahlqvist, Mikko Dufva, et al.. (2014). Regional economic renewal through structured knowledge development within an agglomeration economic framework: The case of the cellulose fibre value chain in the Mt. Gambier region of South Australia. 497–541. 1 indexed citations
10.
Aura, Anna‐Marja, Piritta Niemi, Ismo Mattila, et al.. (2013). Release of Small Phenolic Compounds from Brewer’s Spent Grain and Its Lignin Fractions by Human Intestinal Microbiota in Vitro. Journal of Agricultural and Food Chemistry. 61(40). 9744–9753. 26 indexed citations
11.
Niemelä, Klaus, et al.. (2012). NWBC 2012 : the 4th Nordic Wood Biorefinery Conference : Helsinki, Finland, 23-25 October, 2012. 2 indexed citations
12.
Humphreys, Paul, et al.. (2012). Behaviour of xyloisosaccharinic acid and xyloisosaccharino-1,4-lactone in aqueous solutions at varying pHs. Carbohydrate Research. 363. 51–57. 8 indexed citations
13.
Hummel, Michael, et al.. (2010). Acidity and Lactonization of Xylonic Acid: A Nuclear Magnetic Resonance Study. Journal of Carbohydrate Chemistry. 29(8-9). 416–428. 14 indexed citations
14.
Niemelä, Klaus. (1990). The formation of hydroxy monocarboxylic acids and dicarboxylic acids by alkaline thermochemical degradation of cellulose. Journal of Chemical Technology & Biotechnology. 48(1). 17–28. 31 indexed citations
15.
Niemelä, Klaus. (1990). Conversion of xylan, starch, and chitin into carboxylic acids by treatment with alkali. Carbohydrate Research. 204. 37–49. 31 indexed citations
16.
Niemelä, Klaus. (1988). GLC-MS Studies on Pine Kraft Black Liquors Part I. Identification of Monomeric Compounds. Holzforschung. 42(3). 169–173. 31 indexed citations
17.
Niemelä, Klaus & Eero Sjöström. (1986). The conversion of cellulose into carboxylic acids by a drastic alkali treatment. Biomass. 11(3). 215–221. 22 indexed citations
18.
Niemelä, Klaus & Eero Sjöström. (1985). Alkaline degradation of alginates to carboxylic acids. Carbohydrate Research. 144(2). 241–249. 31 indexed citations
19.
Alén, Raimo, Klaus Niemelä, & Eero Sjöström. (1984). Modification of Alkaline Pulping to Facilitate the Isolation of Aliphatic Acids Part 1. Sodium hydroxide pretreatment of pine wood. Journal of Wood Chemistry and Technology. 4(4). 405–419. 7 indexed citations
20.
Alén, Raimo, Klaus Niemelä, & Eero Sjöström. (1984). Gas-liquid chromatographic separation of hydroxy monocarboxylic acids and dicarboxylic acids on a fused-silica capillary column. Journal of Chromatography A. 301. 273–276. 65 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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