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Ohyama, Chikara

Ohyama, Chikara

Hirosaki University, Japan

2025 Rank: 141,490

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Urology & Nephrology

SubField 2:

Oncology & Carcinogenesis

Rank in SubField 1: 1,476 out of 92,052 Researchers

Data For The Year: 2025
Metrics Self-Citations Excluded All
Rank Based on Composite Score141,490133,243
Total Cites7,7879,660
H-index4146
Hm-index1416
Number of Single Authored Papers44
Total Cites to Single Authored Papers6060
Number of Single+First Authored Papers3030
Total Cites to Single+First Authored Papers660753
Number of Single+First+Last Authored Papers222222
Total Cites to Single+First+Last Authored Papers2,5153,280
Composite Score33
Number of Distinct Citing Papers6,8067,657
Ratio of Total Citations to Distinct Citing Papers 1.14 1.26
Self-Citation Percentage
19.39%
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Ohyama, Chikara

Ohyama, Chikara

Hirosaki University, Japan

2024 Rank: 142,043

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Urology & Nephrology

SubField 2:

Oncology & Carcinogenesis

Rank in SubField 1: 1,498 out of 87,532 Researchers

Data For The Year: 2024
Metrics Self-Citations Excluded All
Rank Based on Composite Score142,043131,768
Total Cites7,1738,986
H-index3944
Hm-index1416
Number of Single Authored Papers44
Total Cites to Single Authored Papers6060
Number of Single+First Authored Papers3030
Total Cites to Single+First Authored Papers640736
Number of Single+First+Last Authored Papers222222
Total Cites to Single+First+Last Authored Papers2,2423,007
Composite Score33
Number of Distinct Citing Papers6,2727,069
Ratio of Total Citations to Distinct Citing Papers 1.14 1.27
Self-Citation Percentage
20.18%
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Ohyama, Chikara

Ohyama, Chikara

Hirosaki University, Japan

2023 Rank: 142,250

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Urology & Nephrology

SubField 2:

Oncology & Carcinogenesis

Rank in SubField 1: 1,507 out of 82,885 Researchers

Data For The Year: 2023
Metrics Self-Citations Excluded All
Rank Based on Composite Score142,250132,246
Total Cites6,5888,408
H-index3742
Hm-index1315
Number of Single Authored Papers44
Total Cites to Single Authored Papers5656
Number of Single+First Authored Papers3030
Total Cites to Single+First Authored Papers616715
Number of Single+First+Last Authored Papers280280
Total Cites to Single+First+Last Authored Papers2,0432,810
Composite Score33
Number of Distinct Citing Papers5,7456,529
Ratio of Total Citations to Distinct Citing Papers 1.15 1.29
Self-Citation Percentage
21.65%
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Ohyama, Chikara

Ohyama, Chikara

Hirosaki University, Japan

2022 Rank: 145,964

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Urology & Nephrology

SubField 2:

Oncology & Carcinogenesis

Rank in SubField 1: 1,543 out of 79,729 Researchers

Data For The Year: 2022
Metrics Self-Citations Excluded All
Rank Based on Composite Score145,964132,660
Total Cites5,6767,302
H-index3540
Hm-index1214
Number of Single Authored Papers44
Total Cites to Single Authored Papers5555
Number of Single+First Authored Papers3030
Total Cites to Single+First Authored Papers589687
Number of Single+First+Last Authored Papers254254
Total Cites to Single+First+Last Authored Papers1,6812,379
Composite Score33
Number of Distinct Citing Papers4,9455,632
Ratio of Total Citations to Distinct Citing Papers 1.15 1.30
Self-Citation Percentage
22.27%
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Ohyama, Chikara

Ohyama, Chikara

Hirosaki University, Japan

2021 Rank: 147,220

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Clinical Medicine

SubField 1:

Urology & Nephrology

SubField 2:

Oncology & Carcinogenesis

Rank in SubField 1: 1,557 out of 76,322 Researchers

Data For The Year: 2021
Metrics Self-Citations Excluded All
Rank Based on Composite Score147,220136,022
Total Cites5,2736,842
H-index3438
Hm-index1214
Number of Single Authored Papers44
Total Cites to Single Authored Papers5353
Number of Single+First Authored Papers3030
Total Cites to Single+First Authored Papers571668
Number of Single+First+Last Authored Papers220220
Total Cites to Single+First+Last Authored Papers1,5302,206
Composite Score33
Number of Distinct Citing Papers4,6095,266
Ratio of Total Citations to Distinct Citing Papers 1.14 1.30
Self-Citation Percentage
22.93%
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