Norman E. Delfel

406 total citations
22 papers, 280 citations indexed

About

Norman E. Delfel is a scholar working on Molecular Biology, Complementary and alternative medicine and Food Science. According to data from OpenAlex, Norman E. Delfel has authored 22 papers receiving a total of 280 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Molecular Biology, 6 papers in Complementary and alternative medicine and 5 papers in Food Science. Recurrent topics in Norman E. Delfel's work include Bioactive natural compounds (8 papers), Traditional Chinese Medicine Analysis (6 papers) and Natural product bioactivities and synthesis (5 papers). Norman E. Delfel is often cited by papers focused on Bioactive natural compounds (8 papers), Traditional Chinese Medicine Analysis (6 papers) and Natural product bioactivities and synthesis (5 papers). Norman E. Delfel collaborates with scholars based in United States. Norman E. Delfel's co-authors include Roger England, J. A. Rothfus, W. H. Tallent, I. A. Wolff, Diana G. Carlson, Brian N. Meyer, Jerry L. McLaughlin, Peter Heinstein, Philippe Hartl and Robert B. Bates and has published in prestigious journals such as Nature, Journal of the American Chemical Society and Analytical Chemistry.

In The Last Decade

Norman E. Delfel

22 papers receiving 256 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Norman E. Delfel United States 12 169 97 55 25 17 22 280
Rick C. Heupel United States 10 271 1.6× 206 2.1× 23 0.4× 16 0.6× 9 0.5× 14 383
R. Münzner Russia 10 127 0.8× 73 0.8× 126 2.3× 56 2.2× 26 1.5× 25 306
E. M. Cappelletti Italy 9 175 1.0× 156 1.6× 51 0.9× 8 0.3× 6 0.4× 24 317
Maria L. Patitucci Brazil 11 200 1.2× 117 1.2× 65 1.2× 6 0.2× 13 0.8× 14 376
Roland Hardman United Kingdom 10 191 1.1× 111 1.1× 51 0.9× 4 0.2× 37 2.2× 34 305
A. V. Zhukov Russia 11 154 0.9× 127 1.3× 35 0.6× 30 1.2× 8 0.5× 29 306
Stephen F. Darling Slovakia 13 137 0.8× 175 1.8× 76 1.4× 4 0.2× 9 0.5× 24 346
W.M. Owais United States 12 222 1.3× 212 2.2× 30 0.5× 11 0.4× 3 0.2× 23 440
Eirini Kouloura Greece 7 101 0.6× 71 0.7× 43 0.8× 16 0.6× 14 0.8× 12 228
P. Suter Germany 9 130 0.8× 207 2.1× 12 0.2× 11 0.4× 11 0.6× 13 418

Countries citing papers authored by Norman E. Delfel

Since Specialization
Citations

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

Fields of papers citing papers by Norman E. Delfel

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Norman E. Delfel. 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 Norman E. Delfel. The network helps show where Norman E. Delfel may publish in the future.

Co-authorship network of co-authors of Norman E. Delfel

This figure shows the co-authorship network connecting the top 25 collaborators of Norman E. Delfel. A scholar is included among the top collaborators of Norman E. Delfel 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 Norman E. Delfel. Norman E. Delfel 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.
Delfel, Norman E., et al.. (1986). High-performance liquid chromatography of triterpene saponins. Journal of Chromatography A. 368. 433–438. 24 indexed citations
2.
Tan‐Wilson, Anna L., Philippe Hartl, Norman E. Delfel, & Kalpana Wilson. (1985). Differential Expression of Kunitz and Bowman-Birk Soybean Proteinase Inhibitors in Plant and Callus Tissue. PLANT PHYSIOLOGY. 78(2). 310–314. 12 indexed citations
3.
Delfel, Norman E., et al.. (1985). Gas chromatography-mass spectrometry of oleanane- and ursane-type triterpenes—application to Chenopodium quinoa triterpenes. Phytochemistry. 24(9). 2063–2066. 67 indexed citations
4.
Delfel, Norman E., et al.. (1984). High-performance liquid chromatography of oleanane-type triterpenes. Journal of Chromatography A. 292(2). 403–409. 16 indexed citations
5.
Delfel, Norman E.. (1980). The Effect of Nutritional Factors on Alkaloid Metabolism in Cephalotaxus harringtonia Tissue Cultures. Planta Medica. 39(6). 168–179. 5 indexed citations
6.
Delfel, Norman E.. (1980). Alkaloid distribution and catabolism in Cephalotaxus harringtonia. Phytochemistry. 19(3). 403–408. 14 indexed citations
7.
Delfel, Norman E., et al.. (1980). The Importance of Culture Conditions and Medium Component Interactions on the Growth of Cephalotaxus harringtonia Tissue Cultures. Planta Medica. 40(11). 237–244. 11 indexed citations
8.
Delfel, Norman E. & J. A. Rothfus. (1977). Antitumor alkaloids in callus cultures of Cephalotaxus harringtonia. Phytochemistry. 16(10). 1595–1598. 23 indexed citations
9.
Delfel, Norman E.. (1976). Ultraviolet and Infrared Analysis of Rotenone: Effect of Other Rotenoids. Journal of AOAC INTERNATIONAL. 59(3). 703–707. 1 indexed citations
10.
Arora, Satish K., et al.. (1975). Crystal and molecular structure of the one to one complex of rotenone and carbon tetrachloride. Journal of the American Chemical Society. 97(20). 5752–5755. 13 indexed citations
11.
Delfel, Norman E.. (1973). Gas-Liquid Chromatographic Determination of Rotenone and Deguelin in Plant Extracts and Commercial Insecticides. Journal of AOAC INTERNATIONAL. 56(6). 1343–1349. 2 indexed citations
12.
Hagemann, J. W., et al.. (1972). Rotenone and deguelin in Tephrosia vogelii at several stages of maturity. Journal of Agricultural and Food Chemistry. 20(4). 906–908. 12 indexed citations
13.
Delfel, Norman E., W. H. Tallent, Diana G. Carlson, & I. A. Wolff. (1970). Distribution of rotenone and deguelin in Tephrosia vogelii and separation of rotenoid-rich fractions. Journal of Agricultural and Food Chemistry. 18(3). 385–390. 26 indexed citations
14.
Martin, Franklin W. & Norman E. Delfel. (1967). THE TUBERS, SAPOGENINS, AND VIRUS RESISTANCE OF DIOSCOREA SPECIES HYBRIDS. American Journal of Botany. 54(9). 1158–1162. 2 indexed citations
15.
Martin, Franklin W. & Norman E. Delfel. (1967). The Tubers, Sapogenins, and Virus Resistance of Dioscorea Species Hybrids. American Journal of Botany. 54(9). 1158–1158. 1 indexed citations
16.
Delfel, Norman E.. (1966). Separation and Identification of Rotenoids, Thin-Layer Chromatography of Rotenone and Related Compounds. Journal of Agricultural and Food Chemistry. 14(2). 130–132. 5 indexed citations
17.
Delfel, Norman E.. (1966). An Apparatus for Linear Gradient Elution under Pressure.. Analytical Chemistry. 38(10). 1429–1430. 3 indexed citations
18.
Delfel, Norman E.. (1965). Insecticide Identification, Hydriodic Acid as New Selective Reagent for Detection of Rotenone in Chromatography. Journal of Agricultural and Food Chemistry. 13(1). 56–57. 1 indexed citations
19.
Irvine, J. E. & Norman E. Delfel. (1961). Flowering Behaviour of Vanilla. Nature. 190(4773). 366–366. 2 indexed citations
20.
Delfel, Norman E., et al.. (1955). Nucleic Acid Content of the Thymic Cells of Normal and Irradiated C57BL Mice<xref ref-type="fn" rid="fn1">2</xref>. JNCI Journal of the National Cancer Institute. 15(4). 981–90. 15 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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