Riki Morioka

661 total citations
10 papers, 552 citations indexed

About

Riki Morioka is a scholar working on Soil Science, Pollution and Industrial and Manufacturing Engineering. According to data from OpenAlex, Riki Morioka has authored 10 papers receiving a total of 552 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Soil Science, 6 papers in Pollution and 3 papers in Industrial and Manufacturing Engineering. Recurrent topics in Riki Morioka's work include Composting and Vermicomposting Techniques (7 papers), Wastewater Treatment and Nitrogen Removal (6 papers) and Odor and Emission Control Technologies (3 papers). Riki Morioka is often cited by papers focused on Composting and Vermicomposting Techniques (7 papers), Wastewater Treatment and Nitrogen Removal (6 papers) and Odor and Emission Control Technologies (3 papers). Riki Morioka collaborates with scholars based in Japan. Riki Morioka's co-authors include Koki Maeda, Dai Hanajima, Takashi Osada, Sakae Toyoda, Naohiro Yoshida, Kazutaka Kuroda, Jun Fujita, Takahiro Yamashita, Hideyuki Ohmori and Hiroshi Yokoyama and has published in prestigious journals such as Applied and Environmental Microbiology, Bioresource Technology and Journal of Bacteriology.

In The Last Decade

Riki Morioka

10 papers receiving 542 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Riki Morioka Japan	9	353	228	184	94	66	10	552
Wenjie Gu China	13	284 0.8×	208 0.9×	176 1.0×	59 0.6×	25 0.4×	48	601
Ylva Eklind Sweden	8	506 1.4×	158 0.7×	335 1.8×	48 0.5×	31 0.5×	11	676
Sven Smårs Sweden	11	715 2.0×	266 1.2×	497 2.7×	60 0.6×	84 1.3×	12	998
P.J.L. Derikx Netherlands	12	178 0.5×	255 1.1×	112 0.6×	125 1.3×	107 1.6×	17	580
P.L. Genevini Italy	14	464 1.3×	188 0.8×	201 1.1×	30 0.3×	44 0.7×	22	647
JoungDu Shin South Korea	11	281 0.8×	133 0.6×	180 1.0×	30 0.3×	26 0.4×	55	553
Mingzi Shi China	10	405 1.1×	261 1.1×	177 1.0×	56 0.6×	14 0.2×	12	662
Hongjie Yin China	9	475 1.3×	289 1.3×	270 1.5×	28 0.3×	20 0.3×	12	639
Yongfen Wei Japan	13	287 0.8×	251 1.1×	189 1.0×	52 0.6×	9 0.1×	34	606
Robin C. Brandt United States	11	193 0.5×	102 0.4×	196 1.1×	48 0.5×	58 0.9×	31	598

Countries citing papers authored by Riki Morioka

Since Specialization

Citations

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

Fields of papers citing papers by Riki Morioka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Riki Morioka

This figure shows the co-authorship network connecting the top 25 collaborators of Riki Morioka. A scholar is included among the top collaborators of Riki Morioka 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 Riki Morioka. Riki Morioka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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10 of 10 papers shown

Yokoyama, Hiroshi, Takahiro Yamashita, Riki Morioka, & Hideyuki Ohmori. (2014). Extracellular Secretion of Noncatalytic Plant Cell Wall-Binding Proteins by the Cellulolytic Thermophile Caldicellulosiruptor bescii. Journal of Bacteriology. 196(21). 3784–3792. 18 indexed citations

Maeda, Koki, Dai Hanajima, Riki Morioka, et al.. (2013). Mitigation of greenhouse gas emission from the cattle manure composting process by use of a bulking agent. Soil Science & Plant Nutrition. 59(1). 96–106. 45 indexed citations

Maeda, Koki, Dai Hanajima, Sakae Toyoda, et al.. (2011). Microbiology of nitrogen cycle in animal manure compost. Microbial Biotechnology. 4(6). 700–709. 141 indexed citations

Hanajima, Dai, et al.. (2011). Bacterial community dynamics in aerated cow manure slurry at different aeration intensities. Journal of Applied Microbiology. 111(6). 1416–1425. 15 indexed citations

Maeda, Koki, Dai Hanajima, Riki Morioka, & Takashi Osada. (2010). Characterization and spatial distribution of bacterial communities within passively aerated cattle manure composting piles. Bioresource Technology. 101(24). 9631–9637. 64 indexed citations

Maeda, Koki, Sakae Toyoda, Takashi Osada, et al.. (2010). Source of Nitrous Oxide Emissions during the Cow Manure Composting Process as Revealed by Isotopomer Analysis of and amoA Abundance in Betaproteobacterial Ammonia-Oxidizing Bacteria. Applied and Environmental Microbiology. 76(5). 1555–1562. 117 indexed citations

Maeda, Koki, Riki Morioka, & Takashi Osada. (2009). Effect of Covering Composting Piles with Mature Compost on Ammonia Emission and Microbial Community Structure of Composting Process. Journal of Environmental Quality. 38(2). 598–606. 32 indexed citations

Maeda, Koki, Riki Morioka, Dai Hanajima, & Takashi Osada. (2009). The Impact of Using Mature Compost on Nitrous Oxide Emission and the Denitrifier Community in the Cattle Manure Composting Process. Microbial Ecology. 59(1). 25–36. 59 indexed citations

Hanajima, Dai, et al.. (2009). Key odor components responsible for the impact on olfactory sense during swine feces composting. Bioresource Technology. 101(7). 2306–2310. 60 indexed citations

10.

Mizunoya, Takeshi, Riki Morioka, & Yoshiro Higano. (2001). A Study on Optimal Environmental Policy Measures Related to the Introduction of New Technologies to Improve the Water Quality of Lake Kasumigaura. Studies in Regional Science. 32(3). 83–106. 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.

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