This map shows the geographic impact of T Sugawa'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 T Sugawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T Sugawa more than expected).
This network shows the impact of papers produced by T Sugawa. 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 T Sugawa. The network helps show where T Sugawa may publish in the future.
Co-authorship network of co-authors of T Sugawa
This figure shows the co-authorship network connecting the top 25 collaborators of T Sugawa.
A scholar is included among the top collaborators of T Sugawa 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 T Sugawa. T Sugawa is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Sugawa, T, Naohiko Umesaki, Aya Yajima, et al.. (1992). [A group study on prognosis of ovarian cancer in Japan].. PubMed. 44(7). 827–32.5 indexed citations
5.
Tomoda, S., et al.. (1991). 144 Effect of the vascular endothelial cells on refractoriness to Angiotensin II (A-II) of pregnant and non-pregnant rabbits. : Significance of Nitric Oxide as EDRF :. 日本産科婦人科學會雜誌. 43(8). 1173.1 indexed citations
Matsumoto, Y., et al.. (1989). [Estrogen production in epithelial tumors of the ovary--clinical and endocrinological study in postmenopausal women].. PubMed. 41(11). 1761–8.1 indexed citations
10.
Tsuda, Hitoshi, et al.. (1989). [Ultrasonographic evaluation of the endometrium in postmenopausal women to select the high risk group of endometrial carcinoma of the uterus].. PubMed. 41(10). 1512–6.1 indexed citations
Umesaki, Naohiko, et al.. (1988). Immunomodulating capacity of the monocyte-macrophage system in patients with uterine cervical cancer.. PubMed. 40(5). 601–8.6 indexed citations
14.
Umesaki, Naohiko, et al.. (1988). [Immunosuppressive effect of culture supernatant derived from decidual cell rich fraction].. PubMed. 40(7). 841–6.2 indexed citations
15.
Sakamoto, Hideo, et al.. (1987). [Effects of uterine contraction and a beta-stimulant on placental and fetal brain blood flow in correlation with fetal heart rate changes].. PubMed. 39(3). 373–9.1 indexed citations
16.
Honda, Kenichi, et al.. (1986). Trehalase Isozymes in Amniotic Fluid. Asia-Oceania Journal of Obstetrics and Gynaecology. 12(4). 563–568.2 indexed citations
17.
Sugawa, T, et al.. (1980). In vitro effect of calf thymic extract on differentiation of precursor lymphocytes in cancer patients.. PubMed. 26(2). 105–8.1 indexed citations
18.
Umesaki, Naohiko, et al.. (1977). A ROLE OF MATERNAL IMMUNE CHANGES IN THE MAINTENANCE OF CONCEPTUS AND IN THE TRIGGER OF LABOR. 日本産科婦人科學會雜誌. 29(9). 1151–1156.
19.
Sugawa, T, et al.. (1974). Measuring of the Uteroplacental Blood Flow -A Comparative Way of Using the Thermocouple Method and the Electromagnetic Flow Meter-. 26(6). 509–516.1 indexed citations
20.
Sugawa, T, Hitoshi Akedo, & Masami Suda. (1960). INTESTINAL ABSORPTION OF AMINO ACIDS:II. ISOTOPIC STUDIES ON THE AMINO ACIDS ABSORPTION FROM THE INTESTINE USING S 35 DL-METHIONINE AND C 14 DL-VALINE. The Journal of Biochemistry. 47(1). 131–138.4 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.