L. L. Chyi

2.5k total citations · 1 hit paper
26 papers, 2.1k citations indexed

About

L. L. Chyi is a scholar working on Radiological and Ultrasound Technology, Geophysics and Astronomy and Astrophysics. According to data from OpenAlex, L. L. Chyi has authored 26 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Radiological and Ultrasound Technology, 11 papers in Geophysics and 7 papers in Astronomy and Astrophysics. Recurrent topics in L. L. Chyi's work include Radioactivity and Radon Measurements (11 papers), Earthquake Detection and Analysis (7 papers) and Astro and Planetary Science (6 papers). L. L. Chyi is often cited by papers focused on Radioactivity and Radon Measurements (11 papers), Earthquake Detection and Analysis (7 papers) and Astro and Planetary Science (6 papers). L. L. Chyi collaborates with scholars based in United States, Taiwan and Mexico. L. L. Chyi's co-authors include Tsanyao Frank Yang, T. Quick, Ching‐Chou Fu, Chen‐Hsin Chen, Sheng‐Rong Song, W. D. Ehmann, Cheng‐Hong Chen, C.Y. Lee, Vivek Walia and Tsung‐Hao Liu and has published in prestigious journals such as SHILAP Revista de lepidopterología, Geochimica et Cosmochimica Acta and Earth and Planetary Science Letters.

In The Last Decade

L. L. Chyi

25 papers receiving 2.0k citations

Hit Papers

Trace elements in soils and plants 1985 2026 1998 2012 1985 400 800 1.2k
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.

  1. Trace elements in soils and plants
    1985 1.5k citations L. L. Chyi Geochimica et Cosmochimica Acta profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
L. L. Chyi United States 13 898 464 418 371 312 26 2.1k
M. J. Dudas Canada 30 775 0.9× 530 1.1× 127 0.3× 146 0.4× 247 0.8× 99 2.8k
N. Breward United Kingdom 19 619 0.7× 236 0.5× 200 0.5× 83 0.2× 388 1.2× 43 1.6k
P. K. Govil India 16 1.1k 1.3× 408 0.9× 106 0.3× 245 0.7× 614 2.0× 32 1.9k
Ulrich Siewers Germany 19 594 0.7× 228 0.5× 272 0.7× 82 0.2× 316 1.0× 33 1.8k
T.T. Chao United States 20 1.2k 1.3× 142 0.3× 253 0.6× 166 0.4× 623 2.0× 50 3.0k
Ondřej Šebek Czechia 34 1.7k 1.9× 207 0.4× 226 0.5× 167 0.5× 396 1.3× 115 3.3k
Ángel Faz Cano Spain 20 567 0.6× 190 0.4× 166 0.4× 124 0.3× 187 0.6× 86 1.6k
Hartmut Heinrichs Germany 18 495 0.6× 59 0.1× 155 0.4× 288 0.8× 235 0.8× 37 1.3k
Massimo Angelone Italy 19 1.2k 1.3× 414 0.9× 74 0.2× 99 0.3× 582 1.9× 37 1.8k
A. Keshav Krishna India 20 976 1.1× 309 0.7× 85 0.2× 515 1.4× 659 2.1× 49 2.0k

Countries citing papers authored by L. L. Chyi

Since Specialization
Citations

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

Fields of papers citing papers by L. L. Chyi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of L. L. Chyi

This figure shows the co-authorship network connecting the top 25 collaborators of L. L. Chyi. A scholar is included among the top collaborators of L. L. Chyi 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 L. L. Chyi. L. L. Chyi 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.
Chyi, L. L., T. Quick, Tsanyao Frank Yang, & Cheng‐Hong Chen. (2011). The origin and detection of spike-like anomalies in soil gas radon time series. GEOCHEMICAL JOURNAL. 45(6). 431–438. 10 indexed citations
2.
Chyi, L. L., et al.. (2010). Electrical Resistivity Variations Before and After the Pingtung Earthquake in the Wushanting Mud Volcano Area in Southwestern Taiwan. Journal of Environmental and Engineering Geophysics. 15(4). 219–231. 7 indexed citations
3.
Chyi, L. L., et al.. (2010). The experimental investigation of soil gas radon migration mechanisms and its implication in earthquake forecast. Geofluids. 10(4). 556–563. 24 indexed citations
4.
Chyi, L. L.. (2008). Radon Testing of Various Countertop Materials Final Report. 3 indexed citations
5.
Yang, Tsanyao Frank, Vivek Walia, L. L. Chyi, et al.. (2005). Variations of soil radon and thoron concentrations in a fault zone and prospective earthquakes in SW Taiwan. Radiation Measurements. 40(2-6). 496–502. 140 indexed citations
6.
Chyi, L. L., T. Quick, Tsanyao Frank Yang, & Cheng‐Hong Chen. (2005). Soil Gas Radon Spectra and Earthquakes. Terrestrial Atmospheric and Oceanic Sciences. 16(4). 763–763. 61 indexed citations
7.
Chyi, L. L., et al.. (2002). Automated radon monitoring of seismicity in a fault zone. SHILAP Revista de lepidopterología. 17 indexed citations
8.
Chyi, L. L.. (1997). Groundwater transformation of a low-sulfur to a high-sulfur coal, the Harlem coal of the northern Appalachian basin. International Journal of Coal Geology. 33(4). 317–331. 1 indexed citations
9.
Chyi, L. L., et al.. (1993). New observations in radon emanation and migration. Geological Society of America, Abstracts with Programs; (United States).
10.
Chyi, L. L.. (1985). Trace elements in soils and plants. Geochimica et Cosmochimica Acta. 49(5). 1295–1295. 1493 indexed citations breakdown →
11.
Ehmann, W. D., et al.. (1979). The distribution of zirconium and hafnium in terrestrial rocks, meteorites and the moon. Physics and Chemistry of the Earth. 11. 247–259. 14 indexed citations
12.
James, W. D., W. D. Ehmann, Charles E. Hamrin, & L. L. Chyi. (1976). Oxygen and nitrogen in coal by instrumental neutron activation analysis. Journal of Radioanalytical and Nuclear Chemistry. 32(1). 195–205. 21 indexed citations
13.
Ehmann, W. D., L. L. Chyi, A. N. Garg, et al.. (1975). Chemical studies of the lunar regolith with emphasis on zirconium and hafnium. Lunar Science Conference. 2. 1351–1361. 11 indexed citations
14.
James, W. D., L. L. Chyi, & W. D. Ehmann. (1975). Oxygen and nitrogen in coal by INAA: implications for conversion. Transactions of the American Nuclear Society. 2 indexed citations
15.
Ehmann, W. D. & L. L. Chyi. (1974). Abundances of the group IVB elements, Ti, Zr, and Hf and implications of their ratios in lunar materials. Lunar and Planetary Science Conference Proceedings. 2. 1015–1024. 3 indexed citations
16.
Ehmann, William D. & L. L. Chyi. (1974). Zirconium and hafnium in meteorites. Earth and Planetary Science Letters. 21(3). 230–234. 15 indexed citations
17.
Chyi, L. L. & W. D. Ehmann. (1973). Zirconium and hafnium abundances in some lunar materials and implications of their ratios. Lunar and Planetary Science Conference Proceedings. 4. 1219. 6 indexed citations
18.
Janghorbani, Morteza, et al.. (1973). Oxygen and other elemental abundance data for Apollo 14, 15, 16 and 17 samples. Lunar Science Conference. 4. 1115. 7 indexed citations
19.
Ehmann, W. D., et al.. (1973). Elemental Abundance Studies of Lunar Samples with Particular Reference to Oxygen Abundances and the Zirconium/Hafnium Ratio. Lunar and Planetary Science Conference. 4. 212. 1 indexed citations
20.
Janghorbani, Morteza, et al.. (1972). ELEMENTAL ABUNDANCES IN THE HAVERÖ METEORITE. Meteoritics. 7(4). 573–578. 8 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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