Helena S. Soedjak

710 total citations
16 papers, 562 citations indexed

About

Helena S. Soedjak is a scholar working on Inorganic Chemistry, Organic Chemistry and Molecular Biology. According to data from OpenAlex, Helena S. Soedjak has authored 16 papers receiving a total of 562 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Inorganic Chemistry, 7 papers in Organic Chemistry and 6 papers in Molecular Biology. Recurrent topics in Helena S. Soedjak's work include Vanadium and Halogenation Chemistry (8 papers), Oxidative Organic Chemistry Reactions (4 papers) and Metal-Catalyzed Oxygenation Mechanisms (4 papers). Helena S. Soedjak is often cited by papers focused on Vanadium and Halogenation Chemistry (8 papers), Oxidative Organic Chemistry Reactions (4 papers) and Metal-Catalyzed Oxygenation Mechanisms (4 papers). Helena S. Soedjak collaborates with scholars based in United States, Netherlands and France. Helena S. Soedjak's co-authors include Alison Butler, Richard R. Everett, J.M.K. Timmer, Jerrylaine V. Walker, W.J.N. Groot, K. Ch. A. M. Luyben, R. G. J. M. van der Lans, Joseph E. Spradlin, Joseph Hajdu and Barney L. Bales and has published in prestigious journals such as Journal of Biological Chemistry, Analytical Chemistry and Biochemistry.

In The Last Decade

Helena S. Soedjak

16 papers receiving 539 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Helena S. Soedjak United States 11 216 207 93 77 58 16 562
Madalena Humanes Portugal 13 143 0.7× 469 2.3× 60 0.6× 106 1.4× 655 11.3× 21 1.0k
Jorge M.T.B. Varejão Portugal 7 62 0.3× 86 0.4× 76 0.8× 67 0.9× 270 4.7× 10 480
Soumya Ranjan Dash India 14 149 0.7× 77 0.4× 114 1.2× 38 0.5× 209 3.6× 62 677
George Sanderson United Kingdom 14 76 0.4× 193 0.9× 213 2.3× 64 0.8× 68 1.2× 23 866
W. Sch�niger Japan 7 80 0.4× 92 0.4× 201 2.2× 114 1.5× 72 1.2× 15 740
R. Lejeune Belgium 12 57 0.3× 119 0.6× 95 1.0× 100 1.3× 133 2.3× 50 561
Wenning Yang China 16 58 0.3× 185 0.9× 28 0.3× 200 2.6× 342 5.9× 42 886
LI Hai-yan China 10 124 0.6× 41 0.2× 384 4.1× 64 0.8× 272 4.7× 34 625
Sandra S. Soares Portugal 13 310 1.4× 289 1.4× 59 0.6× 68 0.9× 148 2.6× 17 809

Countries citing papers authored by Helena S. Soedjak

Since Specialization
Citations

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

Fields of papers citing papers by Helena S. Soedjak

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helena S. Soedjak. 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 Helena S. Soedjak. The network helps show where Helena S. Soedjak may publish in the future.

Co-authorship network of co-authors of Helena S. Soedjak

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

All Works

16 of 16 papers shown
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Soedjak, Helena S., Jerrylaine V. Walker, & Alison Butler. (1995). Inhibition and inactivation of vanadium bromoperoxidase by the substrate hydrogen peroxide and further mechanistic studies. Biochemistry. 34(39). 12689–12696. 49 indexed citations
4.
Soedjak, Helena S.. (1994). Colorimetric Determination of Carrageenans and Other Anionic Hydrocolloids with Methylene Blue. Analytical Chemistry. 66(24). 4514–4518. 97 indexed citations
5.
Soedjak, Helena S.. (1994). Colorimetric Micromethod for Protein Determination with Erythrosin B. Analytical Biochemistry. 220(1). 142–148. 66 indexed citations
6.
Andree, Harry A.M. & Helena S. Soedjak. (1994). Colorimetric Phospholipid Determination with Erythrosin B. Analytical Biochemistry. 222(2). 465–471. 6 indexed citations
7.
Soedjak, Helena S. & Joseph E. Spradlin. (1994). Enzymatic Transesterification of Sugars in Anhydrous Pyridine. Biocatalysis. 11(3). 241–248. 16 indexed citations
8.
Soedjak, Helena S. & Alison Butler. (1991). Mechanism of dioxygen formation catalyzed by vanadium bromoperoxidase from Macrocystis pyrifera and Fucus distichus: steady state kinetic analysis and comparison to the mechanism of V-BrPO from Ascophyllum nodosum. Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology. 1079(1). 1–7. 36 indexed citations
9.
Soedjak, Helena S., Richard R. Everett, & Alison Butler. (1991). The novel non-heme vanadium bromoperoxidase from marine algae: Phosphate inactivation. Journal of Industrial Microbiology & Biotechnology. 8(1). 37–43. 10 indexed citations
10.
Butler, Alison, Helena S. Soedjak, & Richard A. Tschirret-Guth. (1991). Chlorination catalyzed by vanadium bromoperoxidase.. Journal of Inorganic Biochemistry. 43(2-3). 405–405. 2 indexed citations
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Soedjak, Helena S. & Alison Butler. (1990). Chlorination catalyzed by vanadium bromoperoxidase. Inorganic Chemistry. 29(25). 5015–5017. 57 indexed citations
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Groot, W.J.N., et al.. (1990). Butanol recovery from fermentations by liquid-liquid extraction and membrane solvent extraction. Bioprocess and Biosystems Engineering. 5(5). 203–216. 96 indexed citations
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Everett, Richard R., Helena S. Soedjak, & Alison Butler. (1990). Mechanism of dioxygen formation catalyzed by vanadium bromoperoxidase. Steady state kinetic analysis and comparison to the mechanism of bromination.. Journal of Biological Chemistry. 265(26). 15671–15679. 55 indexed citations
15.
Butler, Alison, et al.. (1990). STUDIES OF VANDADIUM‐BROMOPEROXIDASE USING SURFACE AND CORTICAL PROTOPLASTS OF MACROCYSTIS PYRIEFERA (PHAEOPHYTA)1. Journal of Phycology. 26(3). 589–592. 10 indexed citations
16.
Soedjak, Helena S., Barney L. Bales, & Joseph Hajdu. (1988). Electron Spin Resonance of The Semiquinone of The Antitumor Antibiotic Streptonigrin and Its Metal Complexes. PubMed. 49. 203–210. 1 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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