| Discipline name | D-Index | World Ranking | Current World Ranking | National Ranking | Current National Ranking | Publications | Citations |
|---|---|---|---|---|---|---|---|
| Microbiology | 41 | 5478 | 5064 | 6 | 5 | 156 | 5176 |
The chart shows the history of publications by Sammy M. Njenga between 1997 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Sammy M. Njenga published across 29 years, from 1997 to 2025, averaging 7 papers a year. Output peaked at 22 publications in 2024. 42 of the 202 publications appeared in the last two years.
202 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1997 | 1 |
| 1998 | 0 |
| 1999 | 0 |
| 2000 | 0 |
| 2001 | 3 |
| 2002 | 0 |
| 2003 | 0 |
| 2004 | 0 |
| 2005 | 1 |
| 2006 | 0 |
| 2007 | 2 |
| 2008 | 3 |
| 2009 | 1 |
| 2010 | 2 |
| 2011 | 7 |
| 2012 | 8 |
| 2013 | 5 |
| 2014 | 15 |
| 2015 | 15 |
| 2016 | 12 |
| 2017 | 11 |
| 2018 | 13 |
| 2019 | 19 |
| 2020 | 20 |
| 2021 | 10 |
| 2022 | 3 |
| 2023 | 9 |
| 2024 | 22 |
| 2025 | 20 |
| Total | 202 |
The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Sammy M. Njenga sits on this spectrum.
This scientist: 156 publications — 29th percentile
29% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 679 publications or more.
| Publications | Scientists | This scientist |
|---|---|---|
| 55–64 | 8 | |
| 65–74 | 29 | |
| 75–84 | 55 | |
| 85–94 | 112 | |
| 95–104 | 137 | |
| 105–114 | 190 | |
| 115–124 | 235 | |
| 125–134 | 234 | |
| 135–144 | 288 | |
| 145–154 | 265 | |
| 155–164 | 264 | 156 |
| 165–174 | 253 | |
| 175–184 | 276 | |
| 185–194 | 190 | |
| 195–204 | 234 | |
| 205–214 | 208 | |
| 215–224 | 198 | |
| 225–234 | 155 | |
| 235–244 | 161 | |
| 245–254 | 160 | |
| 255–264 | 146 | |
| 265–274 | 139 | |
| 275–284 | 148 | |
| 285–294 | 115 | |
| 295–304 | 96 | |
| 305–314 | 88 | |
| 315–324 | 106 | |
| 325–334 | 65 | |
| 335–344 | 76 | |
| 345–354 | 64 | |
| 355–364 | 62 | |
| 365–374 | 65 | |
| 375–384 | 61 | |
| 385–394 | 34 | |
| 395–404 | 44 | |
| 405–414 | 36 | |
| 415–424 | 35 | |
| 425–434 | 29 | |
| 435–444 | 33 | |
| 445–454 | 34 | |
| 455–464 | 25 | |
| 465–474 | 26 | |
| 475–484 | 20 | |
| 485–494 | 19 | |
| 495–504 | 16 | |
| 505–514 | 17 | |
| 515–524 | 23 | |
| 525–534 | 14 | |
| 535–544 | 14 | |
| 545–554 | 18 | |
| 555–564 | 12 | |
| 565–574 | 7 | |
| 575–584 | 9 | |
| 585–594 | 9 | |
| 595–604 | 9 | |
| 605–614 | 7 | |
| 615–624 | 9 | |
| 625–634 | 7 | |
| 635–644 | 4 | |
| 645–654 | 5 | |
| 655–664 | 6 | |
| 665–674 | 7 | |
| 675–678 | 3 | |
| 679+ | 99 |
The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Sammy M. Njenga sits on this spectrum.
This scientist: 41 D-Index — 2nd percentile
2% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 127 D-Index or more.
| D-Index | Scientists | This scientist |
|---|---|---|
| 40 | 30 | |
| 41 | 86 | 41 |
| 42 | 90 | |
| 43 | 117 | |
| 44 | 122 | |
| 45 | 123 | |
| 46 | 108 | |
| 47 | 110 | |
| 48 | 106 | |
| 49 | 109 | |
| 50 | 129 | |
| 51 | 111 | |
| 52 | 116 | |
| 53 | 127 | |
| 54 | 134 | |
| 55 | 134 | |
| 56 | 112 | |
| 57 | 136 | |
| 58 | 162 | |
| 59 | 151 | |
| 60 | 139 | |
| 61 | 123 | |
| 62 | 126 | |
| 63 | 144 | |
| 64 | 109 | |
| 65 | 103 | |
| 66 | 124 | |
| 67 | 112 | |
| 68 | 103 | |
| 69 | 131 | |
| 70 | 94 | |
| 71 | 93 | |
| 72 | 96 | |
| 73 | 92 | |
| 74 | 80 | |
| 75 | 66 | |
| 76 | 87 | |
| 77 | 60 | |
| 78 | 73 | |
| 79 | 59 | |
| 80 | 57 | |
| 81 | 55 | |
| 82 | 47 | |
| 83 | 77 | |
| 84 | 50 | |
| 85 | 45 | |
| 86 | 42 | |
| 87 | 41 | |
| 88 | 32 | |
| 89 | 38 | |
| 90 | 35 | |
| 91 | 34 | |
| 92 | 27 | |
| 93 | 26 | |
| 94 | 33 | |
| 95 | 22 | |
| 96 | 37 | |
| 97 | 22 | |
| 98 | 21 | |
| 99 | 22 | |
| 100 | 30 | |
| 101 | 16 | |
| 102 | 20 | |
| 103 | 17 | |
| 104 | 19 | |
| 105 | 16 | |
| 106 | 19 | |
| 107 | 18 | |
| 108 | 14 | |
| 109 | 10 | |
| 110 | 9 | |
| 111 | 7 | |
| 112 | 11 | |
| 113 | 6 | |
| 114 | 15 | |
| 115 | 10 | |
| 116 | 12 | |
| 117 | 7 | |
| 118 | 10 | |
| 119 | 10 | |
| 120 | 11 | |
| 121 | 2 | |
| 122 | 7 | |
| 123 | 12 | |
| 124 | 5 | |
| 125 | 9 | |
| 126 | 6 | |
| 127+ | 95 |
Alice V. Easton;Alice V. Easton;Rita G. Oliveira;Elise M. O’Connell;Stella Kepha
Maya L. Nadimpalli;Sara J. Marks;Maria Camila Montealegre;Robert H. Gilman
Unknown
Unknown
Dominique Kyelem;Gautam Biswas;Moses J. Bockarie;Mark H. Bradley
Rachel L Pullan;Katherine E Halliday;William E Oswald;Carlos Mcharo
Charles S Mwandawiro;Birgit Nikolay;Jimmy H Kihara;Owen Ozier
Paula Moraga;Jorge Cano;Rebecca F. Baggaley;John O. Gyapong
Hanako Iwashita;Gabriel O Dida;George O Sonye;Toshihiko Sunahara
Unknown
Unknown
Matthew Freeman;A. N. Chard;B. Nikolay;J. V. Garn
Lauren Steinbaum;Laura H. Kwong;Ayse Ercumen;Makeda S. Negash
Charles Mwandawiro;Collins Okoyo;Jimmy Kihara;Elses Simiyu
Unknown
Sammy M Njenga;Charles S Mwandawiro;Erastus Muniu;Mariam T Mwanje
Unknown
Amy J. Pickering;Amy J. Pickering;Sammy M. Njenga;Lauren Steinbaum;Jenna Swarthout;Jenna Swarthout
Sachiyo Nagi;Evans A. Chadeka;Toshihiko Sunahara;Faith Mutungi
William E Oswald;Stella Kepha;Stella Kepha;Stella Kepha;Katherine E Halliday;Carlos Mcharo
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