Robert Valls

1.1k total citations
37 papers, 876 citations indexed

About

Robert Valls is a scholar working on Aquatic Science, Biotechnology and Renewable Energy, Sustainability and the Environment. According to data from OpenAlex, Robert Valls has authored 37 papers receiving a total of 876 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Aquatic Science, 18 papers in Biotechnology and 10 papers in Renewable Energy, Sustainability and the Environment. Recurrent topics in Robert Valls's work include Seaweed-derived Bioactive Compounds (24 papers), Marine Sponges and Natural Products (18 papers) and Algal biology and biofuel production (10 papers). Robert Valls is often cited by papers focused on Seaweed-derived Bioactive Compounds (24 papers), Marine Sponges and Natural Products (18 papers) and Algal biology and biofuel production (10 papers). Robert Valls collaborates with scholars based in France and Algeria. Robert Valls's co-authors include Louis Piovetti, Gérald Culioli, Bernard Banaigs, Annick Ortalo-Magné, Véronique Mesguiche, Christian Francisco, Gilbert Peiffer, Mohamed El Hattab, Nathalie Dupuy and Yveline Le Dréau and has published in prestigious journals such as Journal of Chromatography A, Phytochemistry and Tetrahedron Letters.

In The Last Decade

Robert Valls

37 papers receiving 851 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Robert Valls France 20 460 317 183 176 139 37 876
Louis Piovetti France 22 543 1.2× 361 1.1× 283 1.5× 213 1.2× 165 1.2× 51 1.1k
Giovanna Oriente Italy 18 336 0.7× 268 0.8× 230 1.3× 169 1.0× 91 0.7× 35 889
Kamen Stefanov Bulgaria 19 210 0.5× 167 0.5× 217 1.2× 71 0.4× 103 0.7× 55 829
Xiancui Li Hong Kong 18 292 0.6× 190 0.6× 366 2.0× 112 0.6× 85 0.6× 22 926
Georges Combaut France 14 153 0.3× 167 0.5× 164 0.9× 75 0.4× 63 0.5× 37 517
Karl‐Werner Glombitza Germany 21 868 1.9× 112 0.4× 319 1.7× 431 2.4× 312 2.2× 52 1.5k
Yoshihiko Akakabe Japan 21 208 0.5× 102 0.3× 458 2.5× 139 0.8× 113 0.8× 69 1.2k
Solimabi Wahidulla India 16 170 0.4× 206 0.6× 155 0.8× 39 0.2× 40 0.3× 28 602
Sedat İmre Türkiye 16 231 0.5× 194 0.6× 133 0.7× 51 0.3× 54 0.4× 41 829
C.G. Naik India 19 116 0.3× 383 1.2× 201 1.1× 64 0.4× 42 0.3× 29 1.1k

Countries citing papers authored by Robert Valls

Since Specialization
Citations

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

Fields of papers citing papers by Robert Valls

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Robert Valls

This figure shows the co-authorship network connecting the top 25 collaborators of Robert Valls. A scholar is included among the top collaborators of Robert Valls 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 Robert Valls. Robert Valls 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.
Dréau, Yveline Le, et al.. (2012). CIEL⁎a⁎b⁎ color space predictive models for colorimetry devices – Analysisof perfume quality. Talanta. 104. 58–66. 55 indexed citations
2.
Hattab, Mohamed El, et al.. (2008). Trihydroxylated linear diterpenes from the brown alga Bifurcaria bifurcata (Fucales, Phaeophyta). Biochemical Systematics and Ecology. 36(5-6). 484–489. 11 indexed citations
3.
Hattab, Mohamed El, et al.. (2006). Comparison of various extraction methods for identification and determination of volatile metabolites from the brown alga Dictyopteris membranacea. Journal of Chromatography A. 1143(1-2). 1–7. 52 indexed citations
4.
Ortalo-Magné, Annick, Gérald Culioli, Robert Valls, Bernard Pucci, & Louis Piovetti. (2005). Polar acyclic diterpenoids from Bifurcaria bifurcata (Fucales, Phaeophyta). Phytochemistry. 66(19). 2316–2323. 40 indexed citations
5.
Culioli, Gérald, et al.. (2004). Trihydroxylated linear diterpenes from the brown alga Bifurcaria bifurcata. Phytochemistry. 65(14). 2063–2069. 43 indexed citations
6.
Comméiras, Laurent, Robert Valls, Maurice Santelli, & Jean‐Luc Parrain. (2003). Efficient Synthesis of (.+‐.)‐Dihydrorhipocephalin, a Bioactive Terpenoid from Carribbean Marine Algae of the Genera Penicillus and Udotea.. ChemInform. 35(3). 2 indexed citations
7.
Culioli, Gérald, et al.. (2002). Seasonal variations in the chemical composition of Bifurcaria bifurcata (Cystoseiraceae). Biochemical Systematics and Ecology. 30(1). 61–64. 17 indexed citations
8.
Culioli, Gérald, et al.. (2001). (S)-12-Hydroxygeranylgeraniol-derived diterpenes from the brown alga Bifurcaria bifurcata. Phytochemistry. 57(4). 529–535. 29 indexed citations
9.
Mesguiche, Véronique, Robert Valls, Louis Piovetti, & Gilbert Peiffer. (1999). Characterization and synthesis of (−)-7-methoxydodec-4(E)-enoic acid, a novel fatty acid isolated from Lyngbya majuscula. Tetrahedron Letters. 40(42). 7473–7476. 30 indexed citations
10.
Valls, Robert, et al.. (1999). Enantioselective synthesis of (−)-Bifurcadiol: a natural antitumor marine product. Tetrahedron Letters. 40(48). 8359–8360. 10 indexed citations
11.
Valls, Robert, et al.. (1997). Chimiotaxonomie et marqueurs chimiques dans les algues brunes. Dialnet (Universidad de la Rioja). 19(1). 145–164. 8 indexed citations
12.
Valls, Robert, Rodolphe Lemée, Louis Piovetti, Philippe Amade, & Noureddine Bouaı̈cha. (1995). Dosage de la caulerpényne, toxine de l'algue verteCaulerpa taxifolia. Acta Botanica Gallica. 142(2). 131–135. 5 indexed citations
13.
Valls, Robert, et al.. (1995). (S)-13-hydroxygeranylgeraniol-derived furanoditerpenes from Bifurcaria bifurcata. Phytochemistry. 39(1). 145–149. 48 indexed citations
14.
Valls, Robert, et al.. (1994). Determination of caulerpenyne, a toxin from the green alga Caulerpa taxifolia (Caulerpaceae). Journal of Chromatography A. 663(1). 114–118. 9 indexed citations
15.
Valls, Robert, et al.. (1993). Secondary metabolites from Morocco brown algae of the genus Cystoseira. Phytochemistry. 32(4). 961–966. 30 indexed citations
16.
17.
Valls, Robert, et al.. (1993). Malyngamide G : Proposition de structure pour un nouvel amide chloré d'une algue bleu-verte epiphyte de Cystoseira crinita.. Tetrahedron Letters. 34(34). 5437–5440. 32 indexed citations
18.
Piovetti, Louis, et al.. (1991). Determination of sterols and diterpenoids from brown algae (Cystoseiraceae). Journal of Chromatography A. 588(1-2). 99–105. 29 indexed citations
19.
Valls, Robert, et al.. (1988). Acyclic diterpenes from Bifurcaria bifurcata. Phytochemistry. 27(7). 2347–2349. 26 indexed citations
20.
Francisco, Christian, et al.. (1985). Mediterraneol a, a novel rearranged diterpenoid-hydroquinone from the marine alga cystoseira mediterranea. Tetrahedron Letters. 26(22). 2629–2632. 36 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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