Richard Ma

2.4k total citations · 1 hit paper
60 papers, 1.8k citations indexed

About

Richard Ma is a scholar working on Pharmacology, General Health Professions and Molecular Biology. According to data from OpenAlex, Richard Ma has authored 60 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Pharmacology, 13 papers in General Health Professions and 9 papers in Molecular Biology. Recurrent topics in Richard Ma's work include Cholinesterase and Neurodegenerative Diseases (14 papers), Reproductive Health and Contraception (7 papers) and Adolescent Sexual and Reproductive Health (6 papers). Richard Ma is often cited by papers focused on Cholinesterase and Neurodegenerative Diseases (14 papers), Reproductive Health and Contraception (7 papers) and Adolescent Sexual and Reproductive Health (6 papers). Richard Ma collaborates with scholars based in China, United Kingdom and United States. Richard Ma's co-authors include David R. Gang, Chang‐Heng Tan, Da‐Yuan Zhu, Da‐Yuan Zhu, Peigen Xiao, Shan‐Hao Jiang, Guofu Chen, Jinmian Han, Jiaqi Wang and Zhengzhi Xie and has published in prestigious journals such as Journal of Agricultural and Food Chemistry, Journal of Experimental Botany and BMJ.

In The Last Decade

Richard Ma

54 papers receiving 1.7k citations

Hit Papers

The Lycopodium alkaloids 2004 2026 2011 2018 2004 100 200 300 400 500
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. The Lycopodium alkaloids
    2004 569 citations Richard Ma, David R. Gang profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Richard Ma China 20 900 585 584 366 201 60 1.8k
Ana Luísa P. Miranda Brazil 27 325 0.4× 618 1.1× 1.5k 2.6× 228 0.6× 35 0.2× 89 2.6k
Thitima Pengsuparp Thailand 21 212 0.2× 652 1.1× 332 0.6× 399 1.1× 82 0.4× 33 1.4k
Feras Q. Alali Jordan 29 265 0.3× 1.3k 2.2× 522 0.9× 974 2.7× 69 0.3× 108 3.5k
Rosa Lemmens‐Gruber Austria 24 251 0.3× 674 1.2× 154 0.3× 519 1.4× 116 0.6× 77 1.8k
Carol Clements United Kingdom 21 295 0.3× 281 0.5× 160 0.3× 233 0.6× 39 0.2× 45 1.1k
Maurice M. Iwu Nigeria 27 228 0.3× 764 1.3× 332 0.6× 1.4k 3.8× 79 0.4× 67 2.6k
Meimei Xu China 31 761 0.8× 2.2k 3.8× 64 0.1× 563 1.5× 137 0.7× 76 3.1k
Lydia L. Lifongo Cameroon 16 166 0.2× 421 0.7× 111 0.2× 386 1.1× 29 0.1× 23 1.1k
Sonia Malik India 23 227 0.3× 719 1.2× 77 0.1× 629 1.7× 54 0.3× 99 1.7k
Harish Rajak India 27 194 0.2× 786 1.3× 1.2k 2.0× 81 0.2× 25 0.1× 101 2.1k

Countries citing papers authored by Richard Ma

Since Specialization
Citations

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

Fields of papers citing papers by Richard Ma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Richard Ma

This figure shows the co-authorship network connecting the top 25 collaborators of Richard Ma. A scholar is included among the top collaborators of Richard Ma 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 Richard Ma. Richard Ma 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.
Ma, Richard, et al.. (2024). Influences on ethnic minority women’s experiences and access to contraception in the UK: a systematic qualitative evidence synthesis. BMJ Sexual & Reproductive Health. 51(1). 64–73. 2 indexed citations
2.
Ma, Richard, et al.. (2024). Treatment of intracranial aneurysms with pipeline embolization device: a single-center experience. Quantitative Imaging in Medicine and Surgery. 14(4). 2916–2926.
3.
Charles, Hannah, Kirsty Foster, Richard Ma, et al.. (2023). Spotlight on drug-resistantShigella: raising awareness within general practice. British Journal of General Practice. 73(729). 187–188. 2 indexed citations
4.
Ma, Richard, et al.. (2023). Endovascular re-canalization for symptomatic non-acute intracranial large artery occlusion: a single-center retrospective study. Quantitative Imaging in Medicine and Surgery. 13(12). 8031–8041.
5.
Ma, Richard, Kimberley Foley, & Sonia Saxena. (2022). Access to and use of contraceptive care during the first COVID-19 lockdown in the UK: a web-based survey. BJGP Open. 6(3). BJGPO.2021.0218–BJGPO.2021.0218. 6 indexed citations
6.
Ma, Richard, et al.. (2022). Revealing the effectiveness of technological innovation shocks on CO2 emissions in BRICS: emerging challenges and implications. Environmental Science and Pollution Research. 29(31). 47373–47381. 16 indexed citations
7.
Gillespie, David, Marijn de Bruin, Dyfrig Hughes, et al.. (2022). PrEP Use, Sexual Behaviour, and PrEP Adherence Among Men who have Sex with Men Living in Wales Prior to and During the COVID-19 Pandemic. AIDS and Behavior. 26(8). 2746–2757. 11 indexed citations
8.
Ryan, Sara, et al.. (2021). Health professionals’ identified barriers to trans health care: a qualitative interview study. British Journal of General Practice. 71(713). e941–e947. 23 indexed citations
9.
Gillespie, David, Dyfrig Hughes, Fiona Wood, et al.. (2020). Early impact of COVID-19 social distancing measures on reported sexual behaviour of HIV pre-exposure prophylaxis users in Wales. Sexually Transmitted Infections. 97(2). 85–87. 18 indexed citations
10.
Ma, Richard & Michael Dixon. (2018). Should all patients be asked about their sexual orientation?. BMJ. 360. k52–k52. 2 indexed citations
11.
Ma, Richard, et al.. (2017). Managing menopause in women living with HIV: A survey of primary care practitioners. Post Reproductive Health. 23(3). 111–115. 17 indexed citations
12.
Li, Yongqiang, et al.. (2016). 3D modeling of cave reservoirs based on karst patterns. 40(5). 50. 2 indexed citations
13.
Cheng, Quan, Richard Ma, Hui Cao, et al.. (2016). Role of miR-223/paired box 6 signaling in temozolomide chemoresistance in glioblastoma multiforme cells. Molecular Medicine Reports. 15(2). 597–604. 18 indexed citations
14.
Ma, Richard, et al.. (2013). Key Issues of 3D Geological Modeling of Paleokarst-Cave Carbonate Reservoir. Gaoxiao dizhi xuebao. 19(1). 64–69. 7 indexed citations
15.
McDowell, Eric T., Richard Ma, Kevin Greer, et al.. (2013). Ginger and turmeric expressed sequence tags identify signature genes for rhizome identity and development and the biosynthesis of curcuminoids, gingerols and terpenoids. BMC Plant Biology. 13(1). 27–27. 50 indexed citations
16.
Ma, Richard. (2013). Discussion on 3D Geological Modeling of Palaeokarst Cave Reservoir: a Case Study on Ordovician Reservoir of the 4th Block in the Tahe Oilfield. Dizhi lunping. 2 indexed citations
17.
Ma, Richard. (2012). On the Third Party Effects of Water Rights Transactions: Types and Causes. Ecological Economy. 1 indexed citations
18.
Ma, Richard & David R. Gang. (2008). In vitro production of huperzine A, a promising drug candidate for Alzheimer’s disease. Phytochemistry. 69(10). 2022–2028. 78 indexed citations
19.
Ma, Richard, Chang‐Heng Tan, Da‐Yuan Zhu, David R. Gang, & Peigen Xiao. (2007). Huperzine A from Huperzia species—An ethnopharmacolgical review. Journal of Ethnopharmacology. 113(1). 15–34. 217 indexed citations
20.
Tan, Chang‐Heng, et al.. (2003). Lycopodium alkaloids from Huperzia miyoshiana. Tianran chanwu yanjiu yu kaifa. 15(5). 383–386. 3 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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