J. Hamer

1.0k total citations
57 papers, 725 citations indexed

About

J. Hamer is a scholar working on Neurology, Public Health, Environmental and Occupational Health and Surgery. According to data from OpenAlex, J. Hamer has authored 57 papers receiving a total of 725 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Neurology, 11 papers in Public Health, Environmental and Occupational Health and 9 papers in Surgery. Recurrent topics in J. Hamer's work include Traumatic Brain Injury and Neurovascular Disturbances (9 papers), Acute Myeloid Leukemia Research (5 papers) and Chronic Lymphocytic Leukemia Research (4 papers). J. Hamer is often cited by papers focused on Traumatic Brain Injury and Neurovascular Disturbances (9 papers), Acute Myeloid Leukemia Research (5 papers) and Chronic Lymphocytic Leukemia Research (4 papers). J. Hamer collaborates with scholars based in Germany, New Zealand and United Kingdom. J. Hamer's co-authors include P. H. Fitzgerald, M. E. J. Beard, S. Høyer, E. Alberti, K. Sartor, Michael Forsting, Paul Kremer, S. Kunze, H. Stoeckel and D. C. Heaton and has published in prestigious journals such as The Lancet, Blood and JNCI Journal of the National Cancer Institute.

In The Last Decade

J. Hamer

53 papers receiving 647 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J. Hamer Germany 17 203 177 170 149 126 57 725
C. G. Barnes United Kingdom 18 187 0.9× 158 0.9× 146 0.9× 72 0.5× 194 1.5× 40 1.5k
Jan Säfwenberg Sweden 15 278 1.4× 155 0.9× 90 0.5× 44 0.3× 51 0.4× 29 806
Jean‐Yves Devaux France 13 91 0.4× 104 0.6× 150 0.9× 90 0.6× 72 0.6× 36 1.0k
Michael Gornish Israel 20 233 1.1× 51 0.3× 278 1.6× 35 0.2× 122 1.0× 33 1.2k
Αναστασία Τάσιου Greece 19 337 1.7× 63 0.4× 272 1.6× 55 0.4× 216 1.7× 38 957
Rula A. Hajj‐Ali United States 20 395 1.9× 67 0.4× 95 0.6× 139 0.9× 146 1.2× 68 1.5k
B Tumiati Italy 16 134 0.7× 53 0.3× 136 0.8× 77 0.5× 48 0.4× 32 917
Moshe Snir Israel 21 183 0.9× 36 0.2× 172 1.0× 33 0.2× 191 1.5× 70 1.1k
Rosario Foti Italy 16 64 0.3× 170 1.0× 117 0.7× 76 0.5× 73 0.6× 93 986
France Ziereisen Belgium 12 53 0.3× 41 0.2× 138 0.8× 89 0.6× 42 0.3× 29 693

Countries citing papers authored by J. Hamer

Since Specialization
Citations

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

Fields of papers citing papers by J. Hamer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. Hamer

This figure shows the co-authorship network connecting the top 25 collaborators of J. Hamer. A scholar is included among the top collaborators of J. Hamer 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 J. Hamer. J. Hamer 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.
Hamer, J., et al.. (2024). Interventions for women with premature cervical dilatation and exposed fetal membranes to prevent pregnancy loss and preterm birth – A systematic review and meta-analysis. European Journal of Obstetrics & Gynecology and Reproductive Biology. 300. 278–286. 1 indexed citations
2.
Sara, Grant, J. Hamer, Patrick J. Gould, et al.. (2024). Greater need but reduced access: a population study of planned and elective surgery rates in adult mental health service users. Epidemiology and Psychiatric Sciences. 33. e12–e12. 1 indexed citations
3.
Williams, Robert A., et al.. (2024). Derisking Well Planning with AI Seismic Interpretation, Communication vs Compartmentalisation?. 1–5. 1 indexed citations
4.
5.
Hamer, J., et al.. (2021). Can We Routinely Employ the Use of Low-Pressure Gynaecological Laparoscopy? A Systematic Review. Cureus. 13(5). e15348–e15348. 2 indexed citations
6.
Rasche, Dirk, Matteo Mario Bonsanto, J. Hamer, Andreas Unterberg, & Volker Tronnier. (2005). Acute posttraumatic paraplegia associated with asymptomatic thoracic meningioma. Acta Neurochirurgica. 147(6). 669–670. 2 indexed citations
7.
Kremer, Paul, Michael Forsting, Christian Wüster, et al.. (2002). Magnetic Resonance Imaging after Transsphenoidal Surgery of Clinically Non-Functional Pituitary Macroadenomas and its Impact on Detecting Residual Adenoma. Acta Neurochirurgica. 144(5). 433–443. 78 indexed citations
8.
Bonsanto, Matteo Mario, J. Hamer, Volker Tronnier, & S. Kunze. (2001). A Complication Conference for Internal Quality Control at the Neurosurgical Department of the University of Heidelberg. Acta neurochirurgica. Supplementum. 78. 139–145. 26 indexed citations
9.
Kremer, Paul, Michael Forsting, J. Hamer, & K. Sartor. (1996). MR Imaging of Residual Tumor Tissue After Transsphenoidal Surgery of Hormone-Inactive Pituitary Macroadenomas: A Prospective Study. PubMed. 65. 27–30. 16 indexed citations
10.
11.
Sachsenheimer, W., et al.. (1982). The value of spinal computed tomography in diagnosis of herniated lumbar discs. Acta Neurochirurgica. 60(1-2). 107–114. 7 indexed citations
12.
Hamer, J.. (1982). Prognosis of oculomotor palsy in patients with aneurysms of the posterior communicating artery. Acta Neurochirurgica. 66(3-4). 173–185. 49 indexed citations
13.
Hamer, J.. (1980). Diagnosis by computerized tomography of intradural dermoid with spontaneous rupture of the cyst. Acta Neurochirurgica. 51(3-4). 219–226. 28 indexed citations
14.
Wiedemann, Klaus, et al.. (1979). [Influence of combined moderate arterial hypoxaemia and moderate hypovolaemic hypotension on cerebral blood flow and cerebral oxidative and energy metabolism in the dog (author's transl)].. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 28(6). 290–8. 1 indexed citations
15.
Hamer, J.. (1979). Small angioma of the choroid plexus as a cause of primary intraventricular haemorrhage. Acta Neurochirurgica. 47(1-2). 83–89. 7 indexed citations
16.
Hamer, J., et al.. (1978). Cerebral glucose and energy metabolism, cerebral oxygen consumption, and blood flow in arterial hypoxaemia. Acta Neurochirurgica. 44(3-4). 151–160. 14 indexed citations
17.
Hamer, J., et al.. (1976). Cerebral blood flow and oxidative brain metabolism during and after moderate and profound arterial hypoxaemia. Acta Neurochirurgica. 33(3-4). 141–150. 18 indexed citations
18.
Hamer, J., E. Alberti, & S. Høyer. (1974). Effects of arterial hypoxaemia, hypercapnia, and changes in cerebral perfusion pressure on mean cerebrospinal fluid and sagittal sinus pressure. Acta Neurochirurgica. 30(3-4). 167–179. 7 indexed citations
19.
Hamer, J., et al.. (1973). Cerebral blood flow and cerebral metabolism in acute increase of intracranial pressure. Acta Neurochirurgica. 28(1-2). 95–110. 18 indexed citations
20.
Fitzgerald, P. H. & J. Hamer. (1969). Third Case of Chronic Lymphocytic Leukaemia in a Carrier of the Inherited Ch1 Chromosome. BMJ. 3(5673). 752–754. 24 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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