Rex P. Hjelm

3.2k total citations · 1 hit paper
85 papers, 2.6k citations indexed

About

Rex P. Hjelm is a scholar working on Molecular Biology, Materials Chemistry and Mechanics of Materials. According to data from OpenAlex, Rex P. Hjelm has authored 85 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Molecular Biology, 20 papers in Materials Chemistry and 17 papers in Mechanics of Materials. Recurrent topics in Rex P. Hjelm's work include Nuclear Physics and Applications (16 papers), Hydrocarbon exploration and reservoir analysis (9 papers) and Fuel Cells and Related Materials (8 papers). Rex P. Hjelm is often cited by papers focused on Nuclear Physics and Applications (16 papers), Hydrocarbon exploration and reservoir analysis (9 papers) and Fuel Cells and Related Materials (8 papers). Rex P. Hjelm collaborates with scholars based in United States, Australia and United Kingdom. Rex P. Hjelm's co-authors include Thomas P. Russell, Joseph T. Mang, Lise Arleth, P. Thiyagarajan, Cynthia Welch, Yu Seung Kim, Hayat Önyüksel, Andrea Labouriau, Israel Rubinstein and P.A. Seeger and has published in prestigious journals such as Cell, Proceedings of the National Academy of Sciences and Journal of the American Chemical Society.

In The Last Decade

Rex P. Hjelm

83 papers receiving 2.5k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Temperature dependence of the interaction parameter of polystyrene and poly(methyl methacrylate)

1990 374 citations Thomas P. Russell, Rex P. Hjelm et al. Macromolecules profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Rex P. Hjelm United States	27	961	582	528	451	346	85	2.6k
Andrew Jackson United States	30	648 0.7×	692 1.2×	621 1.2×	404 0.9×	772 2.2×	62	3.0k
Rajiv Berry United States	27	792 0.8×	459 0.8×	323 0.6×	279 0.6×	378 1.1×	72	2.7k
T. P. Rieker United States	24	1.8k 1.9×	435 0.7×	553 1.0×	290 0.6×	344 1.0×	34	3.3k
L. A. Feĭgin Russia	16	1.1k 1.1×	874 1.5×	460 0.9×	263 0.6×	298 0.9×	69	2.7k
Michael Paulus Germany	30	1.7k 1.8×	612 1.1×	175 0.3×	497 1.1×	456 1.3×	138	3.4k
Thomas Weber Switzerland	36	2.6k 2.7×	545 0.9×	705 1.3×	701 1.6×	460 1.3×	129	4.7k
Denis Boudreau Canada	25	1.3k 1.3×	1.0k 1.8×	350 0.7×	456 1.0×	879 2.5×	84	2.9k
Roland Steitz Germany	33	598 0.6×	680 1.2×	547 1.0×	872 1.9×	864 2.5×	113	3.9k
Henrich Frielinghaus Germany	36	1.4k 1.4×	659 1.1×	1.1k 2.1×	488 1.1×	661 1.9×	184	3.7k
Guangjin Hou China	41	1.9k 2.0×	608 1.0×	308 0.6×	1.6k 3.5×	366 1.1×	182	5.2k

Countries citing papers authored by Rex P. Hjelm

Since Specialization

Citations

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

Fields of papers citing papers by Rex P. Hjelm

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Rex P. Hjelm. 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 Rex P. Hjelm. The network helps show where Rex P. Hjelm may publish in the future.

Co-authorship network of co-authors of Rex P. Hjelm

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

All Works

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20 of 20 papers shown

Neil, Chelsea W., Rex P. Hjelm, Andrew Strzelecki, et al.. (2025). Unravelling the origins of shale nanoporosity using small-angle neutron scattering (SANS). Fuel. 389. 134578–134578. 1 indexed citations

Klein, Jeffrey M., Cynthia Welch, Rex P. Hjelm, et al.. (2025). Colloidal Nafion morphology in 1,2-alkanediols and its impact on membrane and ionomer properties. Chemical Engineering Journal. 516. 163884–163884. 1 indexed citations

Neil, Chelsea W., Rex P. Hjelm, Marilyn E. Hawley, et al.. (2023). Small-Angle Neutron Scattering Investigation of Oil Recovery in Mineralogically Distinct Wolfcamp Shale Strata. Energy & Fuels. 37(7). 4937–4947. 6 indexed citations

Neil, Chelsea W., Hakim Boukhalfa, Hongwu Xu, et al.. (2022). Gas diffusion through variably-water-saturated zeolitic tuff: Implications for transport following a subsurface nuclear event. Journal of Environmental Radioactivity. 250. 106905–106905. 10 indexed citations

Neil, Chelsea W., Rex P. Hjelm, Marilyn E. Hawley, et al.. (2020). Small-angle Neutron Scattering (SANS) Characterization of Clay- and Carbonate-rich Shale at Elevated Pressures. Energy & Fuels. 34(7). 8178–8185. 26 indexed citations

Neil, Chelsea W., Mohamed Mehana, Rex P. Hjelm, et al.. (2020). Reduced methane recovery at high pressure due to methane trapping in shale nanopores. Communications Earth & Environment. 1(1). 39 indexed citations

Olds, Daniel, Matthew E. Helgeson, Κωνσταντίνος Ντέτσικας, et al.. (2020). Microstructural characterization of a star-linear polymer blend under shear flow by using rheo-SANS. Journal of Rheology. 64(3). 663–672. 9 indexed citations

Hjelm, Rex P., Mark A. Taylor, Luke Frash, et al.. (2018). Flow-through compression cell for small-angle and ultra-small-angle neutron scattering measurements. Review of Scientific Instruments. 89(5). 55115–55115. 11 indexed citations

Yearley, Eric J., Michael S. Jablin, Robert D. Gilbertson, et al.. (2011). Shear-induced metastable states of end-grafted polystyrene. Physical Review E. 84(2). 21803–21803. 3 indexed citations

10.

Mang, Joseph T. & Rex P. Hjelm. (2011). Small‐Angle Neutron Scattering and Contrast Variation Measurement of the Interfacial Surface Area in PBX 9501 as a Function of Pressing Intensity. Propellants Explosives Pyrotechnics. 36(5). 439–445. 24 indexed citations

11.

Yearley, Eric J., Cynthia Welch, Mark A. Taylor, et al.. (2010). The Los Alamos Neutron Science Center neutron rheometer in the cone and plate geometry to examine tethered polymers/polymer melt interfaces via neutron reflectivity. Review of Scientific Instruments. 81(5). 55102–55102. 2 indexed citations

12.

Yearley, Eric J., et al.. (2010). The Couette configuration of the Los Alamos Neutron Science Center Neutron Rheometer for the investigation of polymers in the bulk via small-angle neutron scattering. Review of Scientific Instruments. 81(4). 45109–45109. 11 indexed citations

13.

Stone, Deborah B., Rex P. Hjelm, & Robert A. Mendelson. (1999). Solution Structures of Dimeric Kinesin and Ncd Motors. Biochemistry. 38(16). 4938–4947. 13 indexed citations

14.

Hjelm, Rex P., Claudio D. Schteingart, Alan F. Hofmann, & P. Thiyagarajan. (1999). Structure of Conjugated Bile Salt−Fatty Acid−Monoglyceride Mixed Colloids: Studies by Small-Angle Neutron Scattering. The Journal of Physical Chemistry B. 104(2). 197–211. 51 indexed citations

15.

Hellman, F., E.N. Abarra, R. A. Robinson, et al.. (1999). Long ferromagnetic correlation length in amorphousTbFe2. Physical review. B, Condensed matter. 59(17). 11408–11417. 46 indexed citations

16.

Hjelm, Rex P., P. Thiyagarajan, & Hayat Alkan-Önyüksel. (1992). Organization of phosphatidylcholine and bile salt in rodlike mixed micelles. The Journal of Physical Chemistry. 96(21). 8653–8661. 102 indexed citations

17.

Hjelm, Rex P., Murat Alkan, & P. Thiyagarajan. (1990). Small-Angle Neutron Scattering Studies of Mixed Bile Salt-Lecithin Colloids. Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics. 180(1). 155–164. 20 indexed citations

18.

Russell, Thomas P., et al.. (1990). Temperature dependence of the interaction parameter of polystyrene and poly(methyl methacrylate). Macromolecules. 23(3). 890–893. 374 indexed citations breakdown →

19.

Fung, L.W.‐M., Hua Lu, Rex P. Hjelm, & Michael E. Johnson. (1986). Selective detection of rapid motions in spectrin by NMR. FEBS Letters. 197(1-2). 234–238. 18 indexed citations

20.

Hjelm, Rex P., et al.. (1975). Contribution of RNA and nonhistone proteins to the circular dichroism spectrum of chromatin. Biochemistry. 14(8). 1682–1688. 25 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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