A.J. Speek
Impact in
- Biochemistry top 2%
- Antioxidant Activity and Oxidative Stress
- Nutrition and Dietetics top 5%
- Vitamin C and Antioxidants Research
- Child Nutrition and Water Access
Papers in
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- Retinoids in leukemia and cellular processes 3
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- Antioxidant Activity and Oxidative Stress 4
- Co-authors
- J. Schrijver (11 shared papers)W.H.P. Schreurs (8 shared papers)Sastri Saowakontha (3 shared papers)Martin W. Bloem (2 shared papers)Michel Wedel (2 shared papers)Howard Berger (1 shared paper)Ben J. H. M. Poorthuis (1 shared paper)Diny van Zoeren‐Grobben (1 shared paper)
- Journals
- Journal of Chromatography A (2 papers)American Journal of Clinical Nutrition (2 papers)European Journal of Pediatrics (1 paper)Pediatric Research (1 paper)Starch - Stärke (1 paper)
- Partner nations
- NetherlandsTanzaniaThailand
In The Last Decade
A.J. Speek
16 papers receiving 901 citations
Peers
Comparison fields: 5 of 107
- Biochemistry 208
- Nutrition and Dietetics 274
- Hematology 142
- Pediatrics, Perinatology and Child Health 75
- Rheumatology 56
Countries citing papers authored by A.J. Speek
This map shows the geographic impact of A.J. Speek'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 A.J. Speek with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites A.J. Speek more than expected).
Fields of papers citing papers by A.J. Speek
This network shows the impact of papers produced by A.J. Speek. 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 A.J. Speek. The network helps show where A.J. Speek may publish in the future.
Co-authors
The 20 scholars most cited alongside A.J. Speek, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
| # | Work | ||
|---|---|---|---|
| 1 | 1984 | 154 | |
| 2 | 1989 | 142 | |
| 3 | 1985 | 136 | |
| 4 | 1989 | 126 | |
| 5 | 1990 | 115 | |
| 6 | 1986 | 70 | |
| 7 | 1981 | 50 | |
| 8 | 1982 | 40 | |
| 9 | 1984 | 31 | |
| 10 | 1983 | 30 | |
| 11 | けい光検出を行う高性能液体クロマトグラフィーによる全血中のB 2 ビタマ フラビン-アデニンジヌクレオチドの定量 | 1982 | 27 |
| 12 | 1986 | 15 | |
| 13 | 1986 | 13 | |
| 14 | 1975 | 10 | |
| 15 | 1986 | 9 | |
| 16 | 1972 | 8 |
About A.J. Speek
A.J. Speek is a scholar working on Molecular Biology, Biochemistry, Nutrition and Dietetics, Pediatrics, Perinatology and Child Health and Rheumatology, having authored 16 papers that have together received 976 indexed citations. Recurring topics across this work include Antioxidant Activity and Oxidative Stress (4 papers), Retinoids in leukemia and cellular processes (3 papers), Vitamin C and Antioxidants Research (2 papers), Folate and B Vitamins Research (2 papers), Iron Metabolism and Disorders (2 papers), Carcinogens and Genotoxicity Assessment (2 papers), Vitamin K Research Studies (1 paper) and Agricultural safety and regulations (1 paper). The work is most often cited by research in Biochemistry (208 citations), Nutrition and Dietetics (274 citations), Hematology (142 citations), Pediatrics, Perinatology and Child Health (75 citations) and Rheumatology (56 citations). A.J. Speek has collaborated with scholars based in Netherlands, Tanzania and Thailand. Frequent co-authors include J. Schrijver, W.H.P. Schreurs, Sastri Saowakontha, Martin W. Bloem, Michel Wedel, Howard Berger, Ben J. H. M. Poorthuis, Diny van Zoeren‐Grobben, J. Lindeman and V.J. Feron. Their work appears in journals such as Journal of Chromatography A, American Journal of Clinical Nutrition, European Journal of Pediatrics, Pediatric Research and Starch - Stärke.
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.