Gelas Simiyu

427 total citations
18 papers, 120 citations indexed

About

Gelas Simiyu is a scholar working on Pollution, Water Science and Technology and Health, Toxicology and Mutagenesis. According to data from OpenAlex, Gelas Simiyu has authored 18 papers receiving a total of 120 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Pollution, 5 papers in Water Science and Technology and 4 papers in Health, Toxicology and Mutagenesis. Recurrent topics in Gelas Simiyu's work include Energy and Environment Impacts (4 papers), Heavy metals in environment (3 papers) and Energy, Environment, and Transportation Policies (3 papers). Gelas Simiyu is often cited by papers focused on Energy and Environment Impacts (4 papers), Heavy metals in environment (3 papers) and Energy, Environment, and Transportation Policies (3 papers). Gelas Simiyu collaborates with scholars based in Kenya, Rwanda and Netherlands. Gelas Simiyu's co-authors include Marc A. Deshusses, Veronica Ngure, Charles C. Ngugi, Elijah Oyoo‐Okoth, Maureene Auma Ondayo, Faridah Hussein Were, Samuel T. Lutta, Mary A. Opiyo, Donald D. Adams and Horst Kaiser and has published in prestigious journals such as Environmental Monitoring and Assessment, Environmental Engineering Science and African Journal of Ecology.

In The Last Decade

Gelas Simiyu

16 papers receiving 113 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Gelas Simiyu Kenya 6 37 31 30 30 22 18 120
Alejandro Lafuente Spain 10 52 1.4× 17 0.5× 20 0.7× 17 0.6× 23 1.0× 12 235
Abdul‐Wahab Mossa United Kingdom 8 72 1.9× 14 0.5× 17 0.6× 16 0.5× 12 0.5× 15 193
Dijana Djurović Montenegro 9 59 1.6× 12 0.4× 15 0.5× 46 1.5× 12 0.5× 15 233
Biplab Pal India 8 53 1.4× 22 0.7× 31 1.0× 12 0.4× 6 0.3× 17 312
Rama Pal India 7 86 2.3× 44 1.4× 8 0.3× 42 1.4× 21 1.0× 20 278
B. Kahlaoui Chile 11 45 1.2× 36 1.2× 91 3.0× 13 0.4× 12 0.5× 16 342
Ifeanyichukwu Clinton Ezekwe Nigeria 9 34 0.9× 53 1.7× 11 0.4× 22 0.7× 22 1.0× 32 236
Bushra Gul Pakistan 5 61 1.6× 17 0.5× 9 0.3× 46 1.5× 19 0.9× 10 281
Mohammad Shahedur Rahman Saudi Arabia 10 52 1.4× 35 1.1× 31 1.0× 80 2.7× 8 0.4× 18 207
C. Vidya India 7 63 1.7× 13 0.4× 18 0.6× 24 0.8× 7 0.3× 12 308

Countries citing papers authored by Gelas Simiyu

Since Specialization
Citations

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

Fields of papers citing papers by Gelas Simiyu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Gelas Simiyu

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

All Works

18 of 18 papers shown
1.
Kaiser, Horst, et al.. (2025). Macroinvertebrate functional responses to human disturbance and flow cessation in Afromontane-savannah rivers. Ecohydrology & Hydrobiology. 25(4). 100649–100649. 2 indexed citations
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Simiyu, Gelas, et al.. (2020). Production of Biogas from Waste Tea Leaves: A Case of Integrated Waste Management at DL Koisagat Tea Factory, Nandi Hills. 3(2). 156–165. 1 indexed citations
6.
Simiyu, Gelas, et al.. (2018). Spatio-Temporal Distribution of Malaria Incidence in Rwandan Highlands. 3(1). 163–174. 2 indexed citations
7.
Simiyu, Gelas, et al.. (2018). Integrated Energy Recovery and Sugarcane Waste Management. 2(2). 107–114. 1 indexed citations
8.
Simiyu, Gelas, et al.. (2018). Selected Heavy Metal Levels in Cereals in Fluorspar Mining Belt, Elgeyo Marakwet County in Kenya. 3(1). 65–73. 1 indexed citations
9.
Simiyu, Gelas, et al.. (2017). Household Air Pollutionin Rural Western Kenya: A Major Public Health Challenge. IOSR Journal of Environmental Science Toxicology and Food Technology. 11(7). 87–96. 1 indexed citations
10.
Simiyu, Gelas, et al.. (2016). On-Site Fecal Sludge Treatment with the Anaerobic Digestion Pasteurization Latrine. Environmental Engineering Science. 33(11). 898–906. 36 indexed citations
11.
Oyoo‐Okoth, Elijah, et al.. (2016). PCBs in fish and their cestode parasites in Lake Victoria. Environmental Monitoring and Assessment. 188(8). 483–483. 30 indexed citations
12.
Ondayo, Maureene Auma, et al.. (2016). Child Exposure to Lead in the Vicinities of Informal Used Lead-Acid Battery Recycling Operations in Nairobi Slums, Kenya. Journal of Health and Pollution. 6(12). 15–25. 10 indexed citations
13.
Simiyu, Gelas, et al.. (2014). Assessment of Selected Heavy Metal Concentrations in Selected Fresh Fruits in Eldoret Town, Kenya. Journal of environment and earth science. 4(3). 1–8. 9 indexed citations
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Simiyu, Gelas, et al.. (2009). Sediment and nutrient transport and groundwater sources in the Nzoia River watershed, western Kenya, East Africa. SIL Proceedings 1922-2010. 30(6). 884–886. 1 indexed citations
16.
Adams, Donald D. & Gelas Simiyu. (2009). Greenhouse gas (methane and carbon dioxide) emissions from a tropical river in Kenya: the importance of anthropogenic factors on natural gas flux rates. SIL Proceedings 1922-2010. 30(6). 887–889. 1 indexed citations
17.
Simiyu, Gelas, et al.. (2009). Assessment of spring water quality and quantity, and health implications in Tongaren division, Nzoia River catchment, Kenya. African Journal of Ecology. 47(s1). 99–104. 10 indexed citations
18.
Simiyu, Gelas, et al.. (2007). Urban livestock and potential human health risks in Eldoret town, Kenya. 14(2). 100–107. 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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