H. D. Simpson

618 total citations
23 papers, 454 citations indexed

About

H. D. Simpson is a scholar working on Molecular Biology, Materials Chemistry and Biomedical Engineering. According to data from OpenAlex, H. D. Simpson has authored 23 papers receiving a total of 454 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Molecular Biology, 8 papers in Materials Chemistry and 4 papers in Biomedical Engineering. Recurrent topics in H. D. Simpson's work include Enzyme Catalysis and Immobilization (6 papers), Microbial Metabolic Engineering and Bioproduction (6 papers) and Biofuel production and bioconversion (4 papers). H. D. Simpson is often cited by papers focused on Enzyme Catalysis and Immobilization (6 papers), Microbial Metabolic Engineering and Bioproduction (6 papers) and Biofuel production and bioconversion (4 papers). H. D. Simpson collaborates with scholars based in United Kingdom, France and New Zealand. H. D. Simpson's co-authors include Roy M. Daniel, Frédéric Barras, Véronique Alphand, Roland Furstoss, H. Steinfink, R. Pettit, R. Davis, Don A. Cowan, H. L. Clark and Laura Maintz and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Molecular Biology and The Journal of Physical Chemistry.

In The Last Decade

H. D. Simpson

22 papers receiving 429 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
H. D. Simpson United Kingdom 11 244 136 121 80 62 23 454
Helen H. Petach New Zealand 10 340 1.4× 118 0.9× 95 0.8× 110 1.4× 50 0.8× 18 558
Lukáš Fojt Czechia 14 129 0.5× 72 0.5× 78 0.6× 59 0.7× 23 0.4× 47 651
Özgül Persil Çetinkol Türkiye 15 362 1.5× 382 2.8× 25 0.2× 90 1.1× 49 0.8× 26 784
Eva Eichler Canada 14 285 1.2× 148 1.1× 34 0.3× 94 1.2× 408 6.6× 24 708
Kyoko Imai Japan 8 315 1.3× 167 1.2× 42 0.3× 123 1.5× 72 1.2× 13 612
Anne Nicolas France 10 577 2.4× 46 0.3× 66 0.5× 144 1.8× 70 1.1× 23 812
Eugenio Alvarado United States 10 281 1.2× 53 0.4× 48 0.4× 32 0.4× 163 2.6× 10 388
Gabriela Savin Romania 7 150 0.6× 80 0.6× 20 0.2× 130 1.6× 131 2.1× 9 525
Auro Tagliani Italy 12 284 1.2× 90 0.7× 36 0.3× 100 1.3× 102 1.6× 19 404

Countries citing papers authored by H. D. Simpson

Since Specialization
Citations

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

Fields of papers citing papers by H. D. Simpson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. D. Simpson. 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 H. D. Simpson. The network helps show where H. D. Simpson may publish in the future.

Co-authorship network of co-authors of H. D. Simpson

This figure shows the co-authorship network connecting the top 25 collaborators of H. D. Simpson. A scholar is included among the top collaborators of H. D. Simpson 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 H. D. Simpson. H. D. Simpson 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.
Maintz, Laura, et al.. (2022). From Skin Barrier Dysfunction to Systemic Impact of Atopic Dermatitis: Implications for a Precision Approach in Dermocosmetics and Medicine. Journal of Personalized Medicine. 12(6). 893–893. 23 indexed citations
2.
Gutiérrez, Marı́a C., et al.. (2003). The first fluorogenic assay for detecting a Baeyer–Villigerase activity in microbial cells. Organic & Biomolecular Chemistry. 1(20). 3500–3506. 27 indexed citations
3.
Simpson, H. D., Véronique Alphand, & Roland Furstoss. (2001). Microbiological transformations. Journal of Molecular Catalysis B Enzymatic. 16(2). 101–108. 45 indexed citations
4.
Chapon, Virginie, H. D. Simpson, Xavier Morelli, Emmanuel Brun, & Frédéric Barras. (2000). Alteration of a single tryptophan residue of the cellulose-binding domain blocks secretion of the Erwinia chrysanthemiCel5 cellulase (ex-EGZ) via the type II system. Journal of Molecular Biology. 303(2). 117–123. 20 indexed citations
5.
Simpson, H. D. & Frédéric Barras. (1999). Functional Analysis of the Carbohydrate-Binding Domains of Erwinia chrysanthemi Cel5 (Endoglucanase Z) and an Escherichia coli Putative Chitinase. Journal of Bacteriology. 181(15). 4611–4616. 43 indexed citations
6.
Cowan, Don A. & H. D. Simpson. (1997). Controlling the enantioselectivity of sec-alcohol dehydrogenase from thermoanaerobacterium sp. KET4BL. Protein and Peptide Letters. 4(1). 25–32. 12 indexed citations
7.
Graham, Daniel L., H. D. Simpson, & Don A. Cowan. (1996). The Effects of Cosolvent and Incubation Temperature on the Enantioselectivity of Aliphatic Ketone Reductions Catalyzed by Thermostable Secondary Alcohol Dehydrogenases. Annals of the New York Academy of Sciences. 799(1). 244–250. 2 indexed citations
8.
Simpson, H. D. & Don A. Cowan. (1994). Purification and Characterisation of a Novel Secondary Alcohol Dehydrogenase from A Thermonaerobacterium SP.. Protein and Peptide Letters. 1(4). 207–214. 2 indexed citations
9.
Daniel, Roy M., et al.. (1992). Cellulolytic and Hemicellulolytic Enzymes Functional above 100�C. Annals of the New York Academy of Sciences. 672(1 Enzyme Engine). 137–141. 8 indexed citations
10.
Simpson, H. D. & Don A. Cowan. (1992). Secondary Alcohol Dehydrogenases from Extremely Thermophilic Bacteria. Annals of the New York Academy of Sciences. 672(1). 145–151. 3 indexed citations
11.
Daniel, Roy M., et al.. (1992). Cellulolytic and Hemicellulolytic Enzymes Functional above 100°Ca. Annals of the New York Academy of Sciences. 672(1). 137–141. 8 indexed citations
12.
Simpson, H. D., et al.. (1991). An extremely thermostable xylanase from the thermophilic eubacterium Thermotoga. Biochemical Journal. 277(2). 413–417. 132 indexed citations
13.
Simpson, H. D., Tim Coolbear, M.H. Vermuë, & Roy M. Daniel. (1990). Purification and some properties of a thermostable DNA polymerase from a Thermotoga species. Biochemistry and Cell Biology. 68(11). 1292–1296. 9 indexed citations
14.
Simpson, H. D., Tim Coolbear, & Roy M. Daniel. (1990). Purification of a Thermostable DNA Polymerase from a Thermotoga Speciesa. Annals of the New York Academy of Sciences. 613(1). 426–428. 1 indexed citations
15.
Simpson, H. D., et al.. (1987). Purification and some properties of a novel heat-stable cis-toluene dihydrodiol dehydrogenase. Biochemical Journal. 244(3). 585–590. 9 indexed citations
16.
Simpson, H. D., et al.. (1973). Catalytic NOx Reduction Studies. SAE technical papers on CD-ROM/SAE technical paper series. 1. 3 indexed citations
17.
Davis, R., et al.. (1971). Structure of .alpha.-cyclobutadienyliron tricarbonyl carbonium ions. Journal of the American Chemical Society. 93(24). 6688–6690. 49 indexed citations
18.
Clark, H. L., H. D. Simpson, & H. Steinfink. (1970). Crystal structure of Yb11Sb10. Inorganic Chemistry. 9(8). 1962–1964. 22 indexed citations
19.
Simpson, H. D. & H. Steinfink. (1969). X-ray diffraction study of the zeolite complex m-dichlorobenzene-nickel faujasite. Journal of the American Chemical Society. 91(23). 6225–6229. 11 indexed citations
20.
Simpson, H. D. & H. Steinfink. (1969). X-ray diffraction study of the zeolite complex 1-chlorobutane-manganese faujasite. Journal of the American Chemical Society. 91(23). 6229–6232. 9 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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