Takao Kokugan

2.2k total citations
52 papers, 1.8k citations indexed

About

Takao Kokugan is a scholar working on Biomedical Engineering, Mechanical Engineering and Molecular Biology. According to data from OpenAlex, Takao Kokugan has authored 52 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Biomedical Engineering, 13 papers in Mechanical Engineering and 10 papers in Molecular Biology. Recurrent topics in Takao Kokugan's work include Membrane Separation and Gas Transport (10 papers), Cassava research and cyanide (8 papers) and Membrane Separation Technologies (8 papers). Takao Kokugan is often cited by papers focused on Membrane Separation and Gas Transport (10 papers), Cassava research and cyanide (8 papers) and Membrane Separation Technologies (8 papers). Takao Kokugan collaborates with scholars based in Japan and Indonesia. Takao Kokugan's co-authors include Jun Sawai, Hideo Igarashi, Atsushi Hashimoto, Masaru Shimizu, Hiromitsu Kojima, Kenji Yamane, Hirotaka Kojima, M. Shimizu, Shusaku Shoji and Etsuo Kawada and has published in prestigious journals such as Chemical Engineering Journal, Separation and Purification Technology and Biochemical Engineering Journal.

In The Last Decade

Takao Kokugan

51 papers receiving 1.8k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Takao Kokugan Japan 19 873 548 370 231 207 52 1.8k
George L. Marchin United States 14 1.3k 1.5× 550 1.0× 248 0.7× 197 0.9× 279 1.3× 39 2.1k
Mohammad Hossein Zarrintan Iran 13 909 1.0× 639 1.2× 464 1.3× 204 0.9× 225 1.1× 22 1.9k
Yousheng Ouyang China 15 1.5k 1.7× 808 1.5× 261 0.7× 281 1.2× 263 1.3× 24 2.3k
Taťjana Nevěčná Czechia 7 1.7k 2.0× 933 1.7× 217 0.6× 360 1.6× 130 0.6× 19 2.2k
Leila Aparecida Chiavacci Brazil 25 913 1.0× 472 0.9× 482 1.3× 301 1.3× 251 1.2× 71 2.3k
P. V. Varadarajan India 10 1.8k 2.1× 938 1.7× 331 0.9× 231 1.0× 112 0.5× 19 2.4k
Soon‐Il Yun South Korea 25 1.5k 1.8× 701 1.3× 229 0.6× 177 0.8× 217 1.0× 67 2.4k
Suh Cem Pang Malaysia 27 544 0.6× 360 0.7× 601 1.6× 161 0.7× 170 0.8× 52 1.9k
R. H. Balasubramanya India 11 1.6k 1.8× 922 1.7× 377 1.0× 194 0.8× 138 0.7× 48 2.2k
Kasi Gopinath India 23 1.4k 1.6× 604 1.1× 265 0.7× 239 1.0× 147 0.7× 36 2.1k

Countries citing papers authored by Takao Kokugan

Since Specialization
Citations

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

Fields of papers citing papers by Takao Kokugan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takao Kokugan

This figure shows the co-authorship network connecting the top 25 collaborators of Takao Kokugan. A scholar is included among the top collaborators of Takao Kokugan 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 Takao Kokugan. Takao Kokugan 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.
Simanjuntak, Wasinton, et al.. (2021). Semicontinuous Fermentation of Cassava by Streptococcus bovis Using Membrane Bioreactor to Produce Lactic Acid. Revista de Chimie. 71(12). 109–114.
2.
Kawano, Yuki, et al.. (2009). DSC Characterization of Polylactic Acid Synthesized by Non-Catalyzed Direct Polycondensation under Vacuum. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 42(5). 368–375. 1 indexed citations
3.
Kokugan, Takao, et al.. (2007). Effect of Temperature on L-Lactic Acid Fermentation from Fresh Cassava Roots in Tofu Liquid Waste by <I>Streptococcus bovis</I>. Japan Journal of Food Engineering. 8(1). 29–33. 1 indexed citations
4.
Ghofar, Abdul, Shingo Ogawa, & Takao Kokugan. (2005). Production of L-lactic acid from fresh cassava roots slurried with tofu liquid waste by Streptococcus bovis. Journal of Bioscience and Bioengineering. 100(6). 606–612. 29 indexed citations
5.
Ghofar, Abdul & Takao Kokugan. (2004). The pervaporation mechanism of dilute ethanol solution by hydrophobic porous membranes. Biochemical Engineering Journal. 18(3). 235–238. 16 indexed citations
6.
Tashiro, Yohei, et al.. (2001). Separation of structural isomers using soluble β-cyclodextrin polymer by ultrafiltration. Separation and Purification Technology. 24(1-2). 243–253. 14 indexed citations
7.
Kokugan, Takao, et al.. (2000). Separation of isomers by ultrafiltration using modified cyclodextrins. Separation and Purification Technology. 19(1-2). 103–112. 21 indexed citations
8.
Sawai, Jun, S Kasai, Hideo Igarashi, et al.. (2000). Far-infrared irradiation-induced injuries to Escherichia coli at below the lethal temperature. Journal of Industrial Microbiology & Biotechnology. 24(1). 19–24. 20 indexed citations
9.
Kokugan, Takao, et al.. (1998). A Consideration of Pervaporation by Porous Hydrophobic Membranes for Dilute Ethanol Solution.. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 31(1). 153–156. 6 indexed citations
10.
Kokugan, Takao, et al.. (1998). Measurement of Temperature Dependence of Cyclodextrin Binding Constant Using Ultrafiltration.. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 31(4). 640–643. 5 indexed citations
11.
Kokugan, Takao, et al.. (1998). Effect of product removal by a pervaporation on ethanol fermentation. Journal of Fermentation and Bioengineering. 86(5). 488–493. 26 indexed citations
12.
Kokugan, Takao, et al.. (1998). Dehydrogenation of Pure Cyclohexane in the Membrane Reactor and Prediction of Conversion by Pseudo Equilibrium Model.. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 31(4). 596–603. 17 indexed citations
13.
Sawai, Jun, Hiromitsu Kojima, Hideo Igarashi, et al.. (1998). Short Communication: Ames assay with Salmonella typhimurium TA102 for mutagenicity and antimutagenicity of metallic oxide powders having antibacterial activities. World Journal of Microbiology and Biotechnology. 14(5). 773–775. 20 indexed citations
14.
Sawai, Jun, et al.. (1996). Detection of active oxygen generated from ceramic powders having antibacterial activity.. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 29(4). 627–633. 280 indexed citations
15.
Kokugan, Takao, et al.. (1995). Ultrasonic Effect on Ultrafiltration Properties of Ceramic Membrane.. MEMBRANE. 20(3). 213–223. 32 indexed citations
16.
Kokugan, Takao, et al.. (1994). Host-Guest Reaction and Ultrafiltration Properties of Cyclodextrins and Isomers of Nitrophenol Systems.. KAGAKU KOGAKU RONBUNSHU. 20(2). 162–169. 3 indexed citations
17.
Kokugan, Takao, Hirokazu Kobayashi, & Masaru Shimizu. (1986). Heat treatment temperature of membrane and phenomenological coefficients for reverse osmotic membrane.. MEMBRANE. 11(3). 177–183. 1 indexed citations
18.
Kokugan, Takao, et al.. (1984). Relation between filtration coefficients and heat treatment temperature in porous cellulose acetate membranes.. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 17(6). 660–663. 1 indexed citations
19.
Kokugan, Takao & Masaru Shimizu. (1976). The effect of inclination on separation in a thermal diffusion column.. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 9(3). 243–245. 1 indexed citations
20.
Kokugan, Takao & Masaru Shimizu. (1974). CONTINUOUS SEPARATION OF GAS MIXTURE BY THERMAL DIFFUSION COLUMN. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 6(5). 426–432. 1 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by George L. Marchin Breakdown of academic impact, for papers by Mohammad Hossein Zarrintan Breakdown of academic impact, for papers by Yousheng Ouyang Breakdown of academic impact, for papers by Taťjana Nevěčná Breakdown of academic impact, for papers by Leila Aparecida Chiavacci Breakdown of academic impact, for papers by P. V. Varadarajan Breakdown of academic impact, for papers by Soon‐Il Yun Breakdown of academic impact, for papers by Suh Cem Pang Breakdown of academic impact, for papers by R. H. Balasubramanya Breakdown of academic impact, for papers by Kasi Gopinath
Rankless by CCL
2026