J.A. Silfer

864 total citations
8 papers, 689 citations indexed

About

J.A. Silfer is a scholar working on Ecology, Atmospheric Science and Molecular Biology. According to data from OpenAlex, J.A. Silfer has authored 8 papers receiving a total of 689 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Ecology, 3 papers in Atmospheric Science and 2 papers in Molecular Biology. Recurrent topics in J.A. Silfer's work include Isotope Analysis in Ecology (7 papers), Geology and Paleoclimatology Research (3 papers) and Metabolomics and Mass Spectrometry Studies (2 papers). J.A. Silfer is often cited by papers focused on Isotope Analysis in Ecology (7 papers), Geology and Paleoclimatology Research (3 papers) and Metabolomics and Mass Spectrometry Studies (2 papers). J.A. Silfer collaborates with scholars based in United States and Canada. J.A. Silfer's co-authors include Stephen A. Macko, Michael H. Engel, Michael Engel, Yanjun Qian, Patrick G. Hatcher, Paula Jackman, Dale A. Russell, Peggy H. Ostrom, G. G. Hartley and Robert Helleur and has published in prestigious journals such as Nature, Analytical Chemistry and Chemical Geology.

In The Last Decade

J.A. Silfer

8 papers receiving 662 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J.A. Silfer United States	8	482	174	124	122	92	8	689
Heather V. Graham United States	13	271 0.6×	368 2.1×	349 2.8×	24 0.2×	116 1.3×	32	913
Roger E. Summons United States	4	248 0.5×	72 0.4×	169 1.4×	103 0.8×	47 0.5×	6	887
Patricia Ann Straat United States	14	173 0.4×	785 4.5×	123 1.0×	27 0.2×	73 0.8×	33	1.0k
Rogier Braakman United States	11	170 0.4×	238 1.4×	142 1.1×	96 0.8×	23 0.3×	21	662
S. Seager United States	10	176 0.4×	506 2.9×	149 1.2×	27 0.2×	90 1.0×	22	766
Kendra A. Turk United States	20	1.1k 2.2×	192 1.1×	140 1.1×	600 4.9×	144 1.6×	23	1.6k
Shelly D. Carpenter United States	17	336 0.7×	48 0.3×	129 1.0×	138 1.1×	45 0.5×	21	660
Daniel Prieur France	13	234 0.5×	300 1.7×	118 1.0×	28 0.2×	29 0.3×	16	820
Roger A. Chastain United States	14	259 0.5×	49 0.3×	82 0.7×	66 0.5×	54 0.6×	16	652
K. Zahnle United States	7	82 0.2×	564 3.2×	175 1.4×	21 0.2×	46 0.5×	19	691

Countries citing papers authored by J.A. Silfer

Since Specialization

Citations

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

Fields of papers citing papers by J.A. Silfer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.A. Silfer. 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 J.A. Silfer. The network helps show where J.A. Silfer may publish in the future.

Co-authorship network of co-authors of J.A. Silfer

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

All Works

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8 of 8 papers shown

Engel, Michael H., Stephen A. Macko, Yanjun Qian, & J.A. Silfer. (1995). Stable isotope analysis at the molecular level: A new approach for determining the origins of amino acids in the Murchison meteorite. Advances in Space Research. 15(3). 99–106. 11 indexed citations

Silfer, J.A., Yanjun Qian, Stephen A. Macko, & Michael H. Engel. (1994). Stable carbon isotope compositions of individual amino acid enantiomers in mollusc shell by GC/C/IRMS. Organic Geochemistry. 21(6-7). 603–609. 22 indexed citations

Silfer, J.A., Michael H. Engel, & Stephen A. Macko. (1992). Kinetic fractionation of stable carbon and nitrogen isotopes during peptide bond hydrolysis: Experimental evidence and geochemical implications. Chemical Geology Isotope Geoscience section. 101(3-4). 211–221. 107 indexed citations

Macko, Stephen A., Michael H. Engel, G. G. Hartley, et al.. (1991). Isotopic compositions of individual carbohydrates as indicators of early diagenesis of organic matter in peat. Chemical Geology. 93(1-2). 147–161. 38 indexed citations

Silfer, J.A., et al.. (1991). Stable carbon isotope analysis of amino acid enantiomers by conventional isotope ratio mass spectrometry and combined gas chromatography/isotope ratio mass spectrometry. Analytical Chemistry. 63(4). 370–374. 268 indexed citations

Engel, Michael H., Stephen A. Macko, & J.A. Silfer. (1990). Carbon isotope composition of individual amino acids in the Murchison meteorite. Nature. 348(6296). 47–49. 198 indexed citations

Ostrom, Peggy H., et al.. (1990). Geochemical characterization of high molecular weight material isolated from late cretaceous fossils. Organic Geochemistry. 16(4-6). 1139–1144. 27 indexed citations

Silfer, J.A., Michael H. Engel, & Stephen A. Macko. (1990). The effect of hydrothermal processes on the distribution and stereochemistry of amino acids in Recent Antarctic sediments. Applied Geochemistry. 5(1-2). 159–167. 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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