Stephen U. Aja

644 total citations
20 papers, 539 citations indexed

About

Stephen U. Aja is a scholar working on Biomaterials, Environmental Chemistry and Renewable Energy, Sustainability and the Environment. According to data from OpenAlex, Stephen U. Aja has authored 20 papers receiving a total of 539 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Biomaterials, 8 papers in Environmental Chemistry and 6 papers in Renewable Energy, Sustainability and the Environment. Recurrent topics in Stephen U. Aja's work include Clay minerals and soil interactions (14 papers), Mine drainage and remediation techniques (8 papers) and Iron oxide chemistry and applications (6 papers). Stephen U. Aja is often cited by papers focused on Clay minerals and soil interactions (14 papers), Mine drainage and remediation techniques (8 papers) and Iron oxide chemistry and applications (6 papers). Stephen U. Aja collaborates with scholars based in United States, Canada and Austria. Stephen U. Aja's co-authors include Scott A. Wood, Anthony E. Williams‐Jones, Philip E. Rosenberg, Dmitrii A. Kulik, J. A. Kittrick, M. D. Dyar, Joe S. Small, Artur Benisek, Edgar Dachs and Oladipo Omotoso and has published in prestigious journals such as Geochimica et Cosmochimica Acta, American Mineralogist and Applied Geochemistry.

In The Last Decade

Stephen U. Aja

20 papers receiving 520 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Stephen U. Aja United States 13 212 207 155 154 87 20 539
John A. Chermak United States 11 187 0.9× 99 0.5× 81 0.5× 94 0.6× 63 0.7× 16 670
Peter Uhlík Slovakia 15 215 1.0× 127 0.6× 58 0.4× 64 0.4× 92 1.1× 42 668
Bella B. Zviagina Russia 18 443 2.1× 222 1.1× 72 0.5× 83 0.5× 174 2.0× 27 722
H. Roy Northrop United States 9 220 1.0× 346 1.7× 132 0.9× 148 1.0× 85 1.0× 9 601
John P. Morton United States 7 171 0.8× 195 0.9× 61 0.4× 95 0.6× 73 0.8× 9 428
Lise Griffault France 10 156 0.7× 72 0.3× 168 1.1× 58 0.4× 52 0.6× 18 494
Muazzez Çelık Karakaya Türkiye 15 160 0.8× 325 1.6× 69 0.4× 158 1.0× 32 0.4× 44 780
Delphine Charpentier France 18 172 0.8× 362 1.7× 39 0.3× 55 0.4× 39 0.4× 38 723
Necatı Karakaya Türkiye 15 185 0.9× 365 1.8× 69 0.4× 188 1.2× 25 0.3× 42 828
Peter Schweda Sweden 8 149 0.7× 95 0.5× 50 0.3× 103 0.7× 53 0.6× 9 404

Countries citing papers authored by Stephen U. Aja

Since Specialization
Citations

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

Fields of papers citing papers by Stephen U. Aja

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Stephen U. Aja. 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 Stephen U. Aja. The network helps show where Stephen U. Aja may publish in the future.

Co-authorship network of co-authors of Stephen U. Aja

This figure shows the co-authorship network connecting the top 25 collaborators of Stephen U. Aja. A scholar is included among the top collaborators of Stephen U. Aja 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 Stephen U. Aja. Stephen U. Aja 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.
Aja, Stephen U.. (2019). On the Thermodynamic Stability of Illite and I-S Minerals. Clays and Clay Minerals. 67(6). 518–536. 10 indexed citations
2.
3.
Aja, Stephen U., et al.. (2015). The Structure and Thermochemistry of Three Fe-Mg Chlorites. Clays and Clay Minerals. 63(5). 351–367. 5 indexed citations
4.
Aja, Stephen U. & M. D. Dyar. (2002). The stability of Fe–Mg chlorites in hydrothermal solutions—I. Results of experimental investigations. Applied Geochemistry. 17(9). 1219–1239. 22 indexed citations
5.
Aja, Stephen U.. (2002). The Stability of Fe-Mg Chlorites in Hydrothermal Solutions: Ii. Thermodynamic Properties. Clays and Clay Minerals. 50(5). 591–600. 12 indexed citations
6.
Kulik, Dmitrii A., et al.. (2000). Acid–base surface chemistry and sorption of some lanthanides on K+-saturated Marblehead illite: II. a multisite–surface complexation modeling. Geochimica et Cosmochimica Acta. 64(2). 195–213. 43 indexed citations
7.
Aja, Stephen U., et al.. (2000). Acid–base surface chemistry and sorption of some lanthanides on K+-saturated Marblehead illite: I. results of an experimental investigation. Geochimica et Cosmochimica Acta. 64(2). 185–194. 76 indexed citations
8.
Aja, Stephen U. & Joe S. Small. (1999). The solubility of a low-Fe clinochlore between 25 and 175 °C and Pv = PH2O. European Journal of Mineralogy. 11(5). 829–842. 9 indexed citations
9.
Aja, Stephen U.. (1998). The Sorption of the Rare Earth Element, Nd, Onto Kaolinite at 25°C. Clays and Clay Minerals. 46(1). 103–109. 48 indexed citations
10.
11.
Aja, Stephen U., Scott A. Wood, & Anthony E. Williams‐Jones. (1996). The Solubility of Some Alkali-Bearing Zr Minerals in Hydrothermal Solutions. MRS Proceedings. 432. 18 indexed citations
12.
Aja, Stephen U. & Philip E. Rosenberg. (1996). The Thermodynamic Status of Compositionally-Complex Clay Minerals: Discussion of “Clay Mineral Thermometry—A Critical Perspective”. Clays and Clay Minerals. 44(4). 560–568. 10 indexed citations
13.
Aja, Stephen U., Scott A. Wood, & Anthony E. Williams‐Jones. (1995). The aqueous geochemistry of Zr and the solubility of some Zr-bearing minerals. Applied Geochemistry. 10(6). 603–620. 122 indexed citations
14.
Aja, Stephen U.. (1995). Thermodynamic properties of some 2:1 layer clay minerals from solution-equilibration data. European Journal of Mineralogy. 7(2). 325–334. 17 indexed citations
15.
Aja, Stephen U., Scott A. Wood, & Anthony E. Williams‐Jones. (1992). On estimating the thermodynamic properties of silicate minerals. European Journal of Mineralogy. 4(6). 1251–1264. 12 indexed citations
16.
Aja, Stephen U. & Philip E. Rosenberg. (1992). The Thermodynamic Status of Compositionally-Variable Clay Minerals: A Discussion. Clays and Clay Minerals. 40(3). 292–299. 20 indexed citations
17.
Aja, Stephen U.. (1991). Illite equilibria in solutions: III. A re-interpretation of the data of Sass et al. (1987). Geochimica et Cosmochimica Acta. 55(11). 3431–3435. 15 indexed citations
18.
Aja, Stephen U., et al.. (1991). Illite equilibria in solutions: II. Phase relationships in the system K2OMgOAl2O3SiO2H2O. Geochimica et Cosmochimica Acta. 55(5). 1365–1374. 22 indexed citations
19.
Aja, Stephen U., Philip E. Rosenberg, & J. A. Kittrick. (1991). Illite equilibria in solutions: I. Phase relationships in the system K2OAl2O3SiO2H2O between 25 and 250°C. Geochimica et Cosmochimica Acta. 55(5). 1353–1364. 50 indexed citations
20.
Rosenberg, Philip E., J. A. Kittrick, & Stephen U. Aja. (1990). Mixed-layer illite/smectite; a multiphase model. American Mineralogist. 75. 1182–1185. 18 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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