Kei Nishida

791 total citations
46 papers, 608 citations indexed

About

Kei Nishida is a scholar working on Water Science and Technology, Geochemistry and Petrology and Environmental Chemistry. According to data from OpenAlex, Kei Nishida has authored 46 papers receiving a total of 608 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Water Science and Technology, 18 papers in Geochemistry and Petrology and 15 papers in Environmental Chemistry. Recurrent topics in Kei Nishida's work include Groundwater and Isotope Geochemistry (18 papers), Hydrology and Watershed Management Studies (17 papers) and Soil and Water Nutrient Dynamics (15 papers). Kei Nishida is often cited by papers focused on Groundwater and Isotope Geochemistry (18 papers), Hydrology and Watershed Management Studies (17 papers) and Soil and Water Nutrient Dynamics (15 papers). Kei Nishida collaborates with scholars based in Japan, Vietnam and Australia. Kei Nishida's co-authors include Takashi Nakamura, Yasushi Sakamoto, Masafumi Fujita, Eiji Haramoto, Futaba Kazama, Kaoru Yamada, Saman Javadi, Anthony S. Kiem, Yoko Aihara and Duc Anh Trinh and has published in prestigious journals such as SHILAP Revista de lepidopterología, The Science of The Total Environment and Water Resources Research.

In The Last Decade

Kei Nishida

40 papers receiving 584 citations

Peers

Countries citing papers authored by Kei Nishida

Since Specialization

Citations

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

Fields of papers citing papers by Kei Nishida

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kei Nishida

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

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Efficacy of a Fine Bubble Diffuser in Enhancing Attached Biofilm Hydrogenotrophic Denitrification Reactor Performance 2023 ·Water Air & Soil Pollution ·(unknown), (unknown), (unknown), (unknown), (unknown), (unknown), Takashi Nakamura, Kei Nishida	2
2	Nitrogen Contamination and Denitrification Occurrence in Shallow Groundwater of Urbanized Area at Kathmandu Valley, Nepal 2023 ·Journal of Geography (Chigaku Zasshi) ·Takashi Nakamura, Ken’ichi Osaka, Saroj Kumar Chapagain, Kei Nishida	1
3	Characterization of Laboratory-scale Tidal Flow Constructed Wetlands in the Removal of Organic Carbon and Nitrogen from Sewage 2023 ·Journal of Water and Environment Technology ·(unknown), (unknown), Kei Nishida, Kazuhiro Mori, Tadashi Toyama	1
4	Relationship between diarrhoea risk and the combinations of drinking water sources in the Kathmandu Valley, Nepal 2021 ·International Health ·(unknown), (unknown), Sadhana Shrestha, Hiroshi Yokomichi, Kei Nishida	7
5	Using insights from water isotopes to improve simulation of surface water-groundwater interactions 2021 ·The Science of The Total Environment ·(unknown), Anthony S. Kiem, Saman Javadi, Takashi Nakamura, Kei Nishida	29
6	Correction to: Nitrogen balance in paddy fields under flowing-irrigation condition 2020 ·Nutrient Cycling in Agroecosystems ·(unknown), (unknown), Junko Shindo, Kei Nishida	1
7	Effect of dissolved organic nitrogen contamination on δ ¹⁵ N–NH ₄ determination in water samples by modification of the diffusion method with gas‐phase trapping 2018 ·Rapid Communications in Mass Spectrometry ·(unknown), Takashi Nakamura, (unknown), Thi Thao Ta, Tadashi Toyama, Kei Nishida	4
8	Identification of river water and groundwater interaction at central part of the Kathmandu valley, Nepal using stable isotope tracers 2018 ·(unknown), Takashi Nakamura, (unknown), Kei Nishida, (unknown), Naresh Kazi Tamrakar	7
9	Groundwater nitrate contamination in small agriculture area: assessing the source and process using isotopes and ions 2013 ·Journal of Japan Society of Civil Engineers Ser B1 (Hydraulic Engineering) ·(unknown), Takashi Nakamura, Kei Nishida, Eiji Haramoto, Yasushi Sakamoto	1
10	Seasonal Differences and Source Estimation of Groundwater Nitrate Contamination 2013 ·Journal of Water and Environment Technology ·(unknown), Takashi Nakamura, Kei Nishida, Eiji Haramoto, Yasushi Sakamoto	6
11	identification of groundwater recharge and nitrate pollution in the Kanegawa alluvial fan of the Kofu Basin, Japan, using stable isotopes and ions 2012 ·Journal of Japan Society of Civil Engineers Ser B1 (Hydraulic Engineering) ·(unknown), Takashi Nakamura, Kei Nishida, Eiji Haramoto, Yasushi Sakamoto	4
12	Prevalence of protozoa, viruses, coliphages and indicator bacteria in groundwater and river water in the Kathmandu Valley, Nepal 2011 ·Transactions of the Royal Society of Tropical Medicine and Hygiene ·Eiji Haramoto, Kaoru Yamada, Kei Nishida	59
13	Characterization of microbial communities distributed in the groundwater pumped from deep tube wells in the Kathmandu Valley of Nepal 2011 ·Journal of Water and Health ·Yasuhiro Tanaka, Kei Nishida, Takashi Nakamura, Saroj Kumar Chapagain, Daisuke Inoue, Kazunari Sei, Kazuhiro Mori, Yasushi Sakamoto, Futaba Kazama	20
14	Effects of Flow Paths on Dissolved Organic Carbon Concentrations in a Forest Stream 2007 ·Journal of Japan Society on Water Environment ·(unknown), Kei Nishida, Yasushi Sakamoto	1
15	Individuality and Distribution Pattern of Riparian Wetlands Controlling Longitudinal Change in Dissolved Organic Carbon Concentration in a Forested Stream 2007 ·Journal of Japan Society on Water Environment ·(unknown), Kei Nishida	1
16	Dissolved Organic Carbon Concentrations in a Forest Stream and Hydrological Processes in a Hillslope during Storm Flow Periods 2007 ·Journal of Japan Society on Water Environment ·(unknown), Kei Nishida, Yasushi Sakamoto	0
17	Contributions of Surface Soil Waters to Changes in Nitrate and Dissolved Organic Carbon Concentration in Riparian Wetland Streams 2007 ·Journal of Japan Society on Water Environment ·(unknown), Kei Nishida, Masafumi Fujita, Yasushi Sakamoto	5
18	Evaluation of hydrological processes in a mountainous small basin using a quinone biomarker 2006 ·Water Science & Technology ·Masafumi Fujita, (unknown), Kei Nishida, Yasushi Sakamoto	1
19	Relationship between Water Qualities and Ecological Indices of Benthos Distribution in Rivers 2003 ·Environmental Engineering Research ·(unknown), Yasushi Sakamoto, Kei Nishida, (unknown), (unknown)	0
20	Coagulation Behaviors and Coagulant Dosage Control of Kaolin and Bentonite Suspensions 2002 ·Environmental Engineering Research ·(unknown), Fumio Nakamura, Yasushi Sakamoto, Kei Nishida	1

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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