R.A. Nicolaus

852 total citations
16 papers, 683 citations indexed

About

R.A. Nicolaus is a scholar working on Cell Biology, Food Science and Materials Chemistry. According to data from OpenAlex, R.A. Nicolaus has authored 16 papers receiving a total of 683 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Cell Biology, 3 papers in Food Science and 3 papers in Materials Chemistry. Recurrent topics in R.A. Nicolaus's work include melanin and skin pigmentation (8 papers), Botanical Research and Applications (3 papers) and Photochromic and Fluorescence Chemistry (2 papers). R.A. Nicolaus is often cited by papers focused on melanin and skin pigmentation (8 papers), Botanical Research and Applications (3 papers) and Photochromic and Fluorescence Chemistry (2 papers). R.A. Nicolaus collaborates with scholars based in Italy and United Kingdom. R.A. Nicolaus's co-authors include Mario Piattelli, Ernesto Fattorusso, Silvana Magno, Luigi Minale, G. Prota, Giovanna Misuraca, S. De Stefano, C. H. GRAY, D. C. Nicholson and Francesco Chioccara and has published in prestigious journals such as Nature, Cellular and Molecular Life Sciences and Tetrahedron.

In The Last Decade

R.A. Nicolaus

16 papers receiving 612 citations

Peers

R.A. Nicolaus

CB

MB

FS

ND

PS

S. Mukherjee India

R. K. Tripathi United States

H. S. Mason United States

Yoshiyuki Kohno Japan

Wayne C. Thresher United States

Victor Semensi United States

U.S. Kumta India

R.G.O. Kekwick United Kingdom

Choong‐Hwan Lee South Korea

Seizen Toyama Japan

S. Mukherjee India

R.A. Nicolaus

92 ×0.3

CB

155 ×0.7

MB

77 ×0.6

FS

58 ×0.4

ND

91 ×0.9

PS

Citations per year, relative to R.A. Nicolaus R.A. Nicolaus (= 1×) peers S. Mukherjee

Countries citing papers authored by R.A. Nicolaus

Since Specialization

Citations

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

Fields of papers citing papers by R.A. Nicolaus

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R.A. Nicolaus

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

All Works

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16 of 16 papers shown

1.

Chioccara, Francesco, Giuseppe Prota, R.A. Nicolaus, & Ettore Novellino. (1977). A Novel Route to 4H-1,4-Benzothiazines by Ring-Expansion of 2,3-Dihydro-1, 3-benzothiazoles. Synthesis. 1977(12). 876–878. 18 indexed citations

2.

Prota, G., et al.. (1971). The isolation and structure of trichosiderin B. Cellular and Molecular Life Sciences. 27(12). 1381–1383. 15 indexed citations

3.

Minale, Luigi, et al.. (1970). フェオメラニンの構造と生合成 XI フェオメラニンの生合成. Gazzetta chimica italiana. 100(5). 461–466. 8 indexed citations

4.

Prota, G., et al.. (1970). New intermediates in phaeomelanogenesis in vitro. Cellular and Molecular Life Sciences. 26(10). 1058–1059. 47 indexed citations

5.

Misuraca, Giovanna, et al.. (1969). A cytochemical study of phaeomelanin formation in feather papillae of New Hampshire chick embryos. Cellular and Molecular Life Sciences. 25(9). 920–922. 20 indexed citations

6.

Minale, Luigi, Mario Piattelli, S. De Stefano, & R.A. Nicolaus. (1966). Pigments of centrospermae—VI.. Phytochemistry. 5(6). 1037–1052. 56 indexed citations

7.

Piattelli, Mario, Luigi Minale, & R.A. Nicolaus. (1965). Pigments of centrospermae—V.. Phytochemistry. 4(6). 817–823. 65 indexed citations

8.

Piattelli, Mario, Ernesto Fattorusso, R.A. Nicolaus, & Silvana Magno. (1965). The structure of melanins and melanogenesis—V. Tetrahedron. 21(11). 3229–3236. 84 indexed citations

9.

Minale, Luigi, Mario Piattelli, & R.A. Nicolaus. (1965). Pigments of centrospermae—IV. Phytochemistry. 4(4). 593–597. 26 indexed citations

10.

Nicolaus, R.A., Mario Piattelli, & Ernesto Fattorusso. (1964). The structure of melanins and melanogenesis—IV. Tetrahedron. 20(5). 1163–1172. 162 indexed citations

11.

Piattelli, Mario, Ernesto Fattorusso, Silvana Magno, & R.A. Nicolaus. (1963). The structure of melanins and melanogenesis—III. Tetrahedron. 19(12). 2061–2072. 39 indexed citations

12.

Piattelli, Mario, Ernesto Fattorusso, Silvana Magno, & R.A. Nicolaus. (1963). Ustilago melanin, a naturally occuring catechol melanin. Tetrahedron Letters. 4(15). 997–998. 15 indexed citations

13.

Nicolaus, R.A. & Mario Piattelli. (1962). Structure of melanins and melanogenesis. Journal of Polymer Science. 58(166). 1133–1139. 8 indexed citations

14.

Piattelli, Mario, Ernesto Fattorusso, Silvana Magno, & R.A. Nicolaus. (1962). The structure of melanins and melanogenesis—II. Tetrahedron. 18(8). 941–949. 51 indexed citations

15.

Piattelli, Mario & R.A. Nicolaus. (1961). The structure of melanins and melanogenesis—I. Tetrahedron. 15(1-4). 66–75. 42 indexed citations

16.

GRAY, C. H., D. C. Nicholson, & R.A. Nicolaus. (1958). The IX-α Structure of the Common Bile Pigments. Nature. 181(4603). 183–185. 27 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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